968 FXUS66 KSEW 081002 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 302 AM PDT Mon Jun 8 2026 .SYNOPSIS...Cool and unsettled conditions will continue across Western Washington for the first half of the week as a pair of systems move through the region. A pattern shift toward dry and considerably warmer conditions is expected late in week as strong high pressure aloft builds into the region. && .SHORT TERM /TODAY THROUGH WEDNESDAY/... Latest IR satellite imagery shows leading edge of the next incoming system still out over the coastal waters with just the slightest hints at associated precip showing up on current radar. This reflects the consistent model data suggesting a very slow approach, making it to the coastline by late this morning and beginning its inland intrusion this afternoon. Widespread rainfall still on tap by this evening and into the overnight hours with QPF values suggesting periods of moderate rainfall rates over the southern half of the CWA, stretching as far north as Everett. The parent upper low will be the main headline for Tuesday as rains over W WA persist. The placement and track of the main low remains a point of contention amongst model data and while this will not specifically impact the amount of chances of precip, it does play a role in any potential thunderstorm development. Levels of CAPE available has seen some variation, but LIs remain on the positive side of things which would not be helpful to any development. Persistent cloudy conditions and cooler daytime temps will certainly be another factor to overcome convection-wise. This leaves a lot of the work to be done by the upper low and the uncertainty regarding its path does not foster confidence in potential thunderstorm development. NBM remains consistent in its advertising and given associated messaging, felt prudent to leave the prospect in the forecast at this time...although given the factors listed above, an emphasis on isolated development is certainly warranted. Wednesday will see the upper level trough pull away from W WA and thus will see precip chances whittle away through the day. Latest data suggests this to be a bit faster than previously advertised, with the majority of the CWA dry by afternoon /with only some low end PoPs to contend with/. Daytime highs for the near term do not see much in the way of variation with upper 50s to lower 60s expected today and Tuesday. As the system exits the area Wednesday, that should allow some breaks in the clouds, letting peeks of sunshine to nudge temps upward, but not by too much...ranging in the lower to mid 60s. 18 && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... Dry conditions areawide by Wednesday night as the influence from an upper level ridge building over the eastern Pacific begins to nudge its way into W WA. With this feature being very slow to move eastward throughout the remainder of the forecast period, the song will remain the same for the latter half of the week as conditions will remain dry and temperatures begin a steep warming trend. Daytime highs Thursday jump up into the upper 60s to lower 70s. Friday sees further upward motion into the mid to upper 70s. Saturday gets many interior locations into the upper 70s to mid 80s. Sunday finally sees some locations break 90 as temps range from the mid 80s to lower 90s. Temps of this caliber will induce thermal troughing over the area, allowing for offshore flow to develop Saturday night into Sunday. This easterly flow importing more hot and dry air into the area. As this heat persists, HeatRisk becomes an increasing concern. The start of this warming trend, Thursday and Friday, continue to look to be Minor in these terms. Moderate HeatRisk areas begin to pop up, mainly in the SW interior, Saturday while widespread Moderate conditions expected for Sunday. While having any Major HeatRisk emerging beyond the forecast period seems to have lower probabilities at this time, persisting Moderate conditions appear to be more favorable. 18 && .AVIATION... Southwesterly flow will persist aloft today as an upper level trough moves into the region. At the surface, a frontal system will bring widespread rain to western Washington today. Current conditions remain VFR early this morning, but expect rain to gradually push inland throughout the day and to slowly bring conditions down to MVFR, and even localized IFR/LIFR, across the area terminals. Rain looks to move inland along the coast between 14-17Z and make its way into into the interior between 18-21Z. Conditions look to drop down to MVFR across the central and southern Sound terminals after 21Z, with lower cigs and vis likely persisting through the evening and into Tuesday. Temporary reductions to IFR/LIFR will be possible in any heavier rain throughout the day. Southeasterly winds will persist through the morning, before increasing to 8-12 kt and becoming more southwesterly by the afternoon. KSEA...VFR conditions will persist through the morning hours. Rain will move into the terminal between 19-21Z and will allow for conditions to drop down to MVFR after 21Z today. Winds out of the SE this morning between 4-8 kt will shift to the SW this afternoon and increase to 8-12 kt. Winds will become breezy overnight into Tuesday, with gusts to 25 kt possible at times. MVFR conditions will likely persist at the terminals through Tuesday morning. 14 && .MARINE... A surface low and its associated frontal system will move across the coastal waters this morning, gradually push onshore, and weaken this afternoon and evening. This system will bring gusty southeasterly winds to the coastal waters through this afternoon hours today. Strong onshore flow is likely to develop in the wake of the system, with the latest HREF probabilities indicating a 50-70% chance of gales developing along the central and eastern Strait of Juan de Fuca on Tuesday. Southerly winds will increase and become breezy for portions of the Puget Sound waters on Tuesday morning as well, before easing later Tuesday night. High pressure will rebuild back into the coastal waters on Wednesday and Thursday, while a thermal trough gradually expands northward along the Oregon coast. Northwesterly winds over the outer coastal waters could become breezy at times the second half of the week as a result. The thermal trough will then expand northward along the Washington coast by the weekend, allowing for flow to turn offshore. Seas will generally hover between 6-9 ft through the first part of the week, before subsiding towards 5-7 ft near midweek and remaining at this range heading into the weekend. 14 && .FIRE WEATHER...As upper level ridging builds into the area starting Thursday, conditions, including fuels, will need to be monitored as temperatures are expected to climb to above normal values by the end of the extended forecast period. Given the steep climb in temperatures, extra caution would be advised in any planning during this time. Current NBM minimum relatively humidity values are running in the 25-35 percent range by day 7 across portions of the area, but lower values are entirely within the realm of possibility. If the cross Cascade gradient goes negative by Sunday as advertised in a number of models, humidity values dropping into the teens in the Cascades valleys and portions of the Southwest Interior become a distinct possibility. 27/18 && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...Gale Watch from Tuesday morning through Tuesday evening for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca. Small Craft Advisory until 5 PM PDT this afternoon for Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm. Small Craft Advisory until 5 PM PDT this afternoon for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm. && $$

073 FXUS66 KPQR 081036 AFDPQR Area Forecast Discussion National Weather Service Portland OR 336 AM PDT Mon Jun 8 2026 .SYNOPSIS...Cool and wet to hot and dry. This is a simple, concise, but accurate summation of the weather conditions to come as we progresses through the next 5-7 days and beyond. Today is shaping up to be rather soggy and cool, especially by June standards, as steady stratiform rain spreads over western Oregon and southwest Washington before showers linger into the middle of the week. Anticipate breezy south to southwest winds today and tonight as well with wind gusts as high as 30-45 mph. While the cooler/wetter first portion of the week is unusually spring-like, we have to pay the proverbial piper at some point, and it appears he`s coming to collect late week into the weekend. Confidence continues to increase for a multi-day heat event in the June 13-16 timeframe - a stark contrast to how this week begins. Don`t get caught off guard and start preparing for heat related impacts, you`ll thank yourself later. && .SHORT TERM...Now through Wednesday...Cool, wet, and locally breezy conditions are the highlight of the short term forecast thanks to an upper-level trough and accompanying sub-1000mb surface low quickly bearing down on the Pacific Northwest this morning. Modeling systems are still in good agreement depicting the center of the aforementioned closed surfaced low tracking over the south WA/north OR coastal waters towards Long Beach Peninsula by the late afternoon hours and radar observations are already beginning to pick up on the large swath of steady stratiform rain ahead of this surface low. Rainfall is expected to spread from west to east across western WA/OR around sunrise and lasting through the day. Turning our focus back to that surface low, as it swings into the coastline a tightening pressure gradient aided by 40-50 knot winds just above the surface near 850mb (a notable low-level jet feature) likely facilitates breezy south to southwest winds first at the coast, then inland. The period to watch will be the late afternoon and evening hours as s cold frontal boundary associated with the low passes overhead amplifying vertical mixing (again, remember those strong winds just above the surface) while the N to S pressure gradient peaks. While the current forecast generally has gusts in the 25-35 mph range across the coast and inland valleys, this is a scenario when winds could overperform (20-40% chance) due to the favorable frontal dynamics and surface pressure gradient alignment. Would not be surprise to see a few locations record gusts closer to 40-45 mph when all is said and done, especially along the coast this afternoon, and in the central/north Willamette valley during the 4-10pm timeframe. It might be a good time this morning to secure any loose items in your yard if you live in a location susceptible to south-southwesterly winds. Deterministic models and their ensembles remain in good agreement for broad upper level troughing and west to northwest flow to hold over the region Tuesday and Wednesday helping to maintain a cool and showery weather pattern. High temperatures rise mainly into the 60s across the inland valleys which is 4 to 8 degrees below normal for this time of year. At least the latest NBM PoPs suggest showers should dissipate by Wednesday afternoon for most locations outside of the higher terrain in southwest Washington. As far as precipitation totals concerned, the vast majority falls between 5AM this morning and 5 AM PDT Wednesday. QPF amounts from the deterministic NBM during this 48-hour period range generally between 0.5-1.0" over inland valleys, around 1" at the coast, and 1-2" in the Coast Range, Willapa Hills, and Cascades. Probabilities for over 0.5" of rain have settled around 85-95%, and probabilities for 1" of rain or more are 25-50% over the Central Willamette Valley into Portland metro (only 10% near Eugene), and 80-95% along the coast, Coast Range, Willapa Hills, and Cascades. We`ll definitely take any rainfall we can get this time of year, and looking ahead it may be the last we`ll see for awhile. -99 .LONG TERM...Thursday through Sunday...And then it gets hot. The long term forecast continues to be highlighted by a prolonged stretch of dry conditions with moderate to high confidence in a prolonged multi-day heat wave beginning on Saturday. Before the heat truly kicks in, expect rather pleasant weather on Thursday with mostly sunny skies and high temperatures in the 70s, except 60s at the coast - enjoy. From Friday onward into early next week, models and their ensembles show an upper level ridge amplifying over the far northeast Pacific, with some lingering uncertainty regarding exactly how far east the ridge axis will move. Despite the uncertainty with the location of the ridge axis, confidence is high temperatures will be heating up significantly June 13-15. This is when the LREF mean shows 500 mb heights near the climatological 97-98th percentile and the NBM shows a 60-90% chance for high temperatures above 90 degrees for inland valleys and less than a 10% chance at the coast. In fact the latest NBM shows a 20-40% chance for highs at or above 100 degrees June 14-15 for inland valleys, suggesting a major heat wave is certainly within the realm of possibility. In addition, overnight lows in the mid or even upper 60s will offer minimal overnight relief for those without any means of cooling. As such, probabilities for a Moderate HeatRisk or higher peak near 80-95% June 14-15, with a 40-65% chance for a Major HeatRisk or higher. Note the highest probabilities are over the greater Portland/Vancouver metro. Anyone who is sensitive to heat or those who have outdoor plans should pay attention to the forecast over the coming days and be prepared for potential extreme heat. Those planning on swimming in rivers or lakes to cool off should be mindful of cold water temperatures and swift currents, which can become life threatening. -99/23 && .AVIATION...Early this morning VFR CIGs/VIS persist as clouds increase ahead of an approaching frontal system, however, expect flight conditions to degrade as we go through the day. Rain likely arrives from the west by 12-16z this morning while CIGs lower to MVFR a few hours after rain begins, around 16-21z along the coast and 19-22z inland. Chances for IFR conditions increase along the coast after 19-22z as well. Winds out of the south increase ahead and then along the front with gusts of 25-35 kts along the coast by 18-20z and 25-30 kts inland by 00-04z Tue. Isolated gusts at inland sites near 35 knots are possible in the 00-04z timeframe. Steadier rain then breaks to showers this evening with lingering showers at times overnight while winds turn a touch more westerly. KPDX AND APPROACHES...VFR conditions are currently in place with increasing high clouds from our next frontal system. Expect cigs to become MVFR by 19-22z today, continuing at 1.5-2kft through the rest of the TAF period. South winds increase after 21-23z to 10-15 kt with gusts up to 25-30 kts. -99 && .MARINE...Our next impactful weather disturbance rapidly approaches early this morning slated to bring elevated winds and seas in addition to a period of widespread rainfall. Southerly winds are expected noticeable increase this morning, peaking midday into the afternoon hours with high confidence in widespread 30-35 knot gusts. That said, even stronger gusts can be expected south of Cape Falcon where gale-force gusts as high as 40-45 knots are likely (70-80%). North of this point gusts of this magnitude can`t be ruled out but appear more isolated in nature. Thus, a Gale Warning was issued for the inner and outer waters south of Cape Falcon through 1900 today. A fresh westerly swell and wind waves allow seas to build from 4-5 ft this afternoon to 7-9 ft at 8-9 seconds by this afternoon and evening with a continued dominant westerly swell. While southerly winds eventually subside behind the frontal passage this evening, west-northwesterly winds the wake of this feature are also expected to gust near 20-25 knot while seas remain relatively steep, so Small Craft Advisories have been extended through Tuesday evening after which point lingering west-northwest winds drop into the 10-20 knot range and square seas settle slightly. Then on Wednesday into Wednesday night west-northwest winds steadily turn more northerly as high pressure builds offshore - a return to a more summer-like pattern. Strengthening northerlies will see diurnal peaks in the afternoon each day Thursday through at least Saturday and Sunday which could necessitate additional Small Craft Advisories for gusts near 25 kt. Seas through this period look to remain near 5-7 ft with a west-northwest swell at 9-11 seconds. -99 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...Small Craft Advisory from 8 AM this morning to 11 PM PDT Tuesday for PZZ210. Small Craft Advisory from 5 AM early this morning to 11 PM PDT Tuesday for PZZ251. Small Craft Advisory from 5 AM to 11 AM PDT this morning for PZZ252-253. Small Craft Advisory from 7 PM this evening to 11 PM PDT Tuesday for PZZ252-253-272-273. Gale Warning from 11 AM this morning to 7 PM PDT this evening for PZZ252-253. Small Craft Advisory until 11 PM PDT Tuesday for PZZ271. Small Craft Advisory until 8 AM PDT this morning for PZZ272- 273. Gale Warning from 8 AM this morning to 7 PM PDT this evening for PZZ272-273. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

896 FXUS66 KMFR 081107 AFDMFR Area Forecast Discussion National Weather Service Medford OR 407 AM PDT Mon Jun 8 2026 .DISCUSSION... Key Points: * Rain is starting to move into Southern Oregon this morning. This will continue moving east with most areas seeing showers later this afternoon. * Rain chances continue through Tuesday morning before ridging takes control and drier conditions return with a warming trend. * Ridging will remain strong through the week, and models are showing triple digit high territory this weekend. Satellite shows lower clouds across areas west of the Cascades, including in the Umpqua Basin. A few showers are spotted on radar as well, mostly in Douglas County. Radar is also showing a line of rain off the coast, and this is forecast to arrive at the coast before 5 AM. By 7-9 AM the rain will get closer to the Cascades, and it will start to become scattered. The coast and western Josephine and Siskiyou counties will see the most rainfall today before also seeing favorable rainfall in the Cascades into the afternoon. Between 5 AM today and the end of the day the coast could receive near ~0.50" in Coos County while other coastal locations (Curry County) could reach 1.25"-1.50". From Prospect and north in the Cascades, Monday rain totals could reach 0.25"-0.50". The Umpqua Basin is the west side valley most favored to see some rain, with a 65-75% chance to see 0.20". CAPE is not favorable in this timeframe, so thunderstorm chances are below 15%. This front will cool afternoon temperatures to the 50s/60s once more this afternoon. There will be stronger southwest winds this afternoon with 15-25 mph sustained winds for portions of Josephine County, in the Cascades, in Northern California, and east of the Cascades. These winds will stay the longest east of the Cascades into Monday evening, and this is when the rain will turn lighter as well. Showers will remain through Tuesday morning, and this will be concentrated on the Cascades and areas west. Ridging will take control after as it reaches closer to the coast by mid-week. Northwest to west winds will strengthen Tuesday afternoon, mostly across higher terrain east of the Cascades. Tuesday afternoon will have temperatures near 5-10 degrees below normal with near normal temperatures (70s/low 80s) Wednesday. -Hermansen .LONG TERM...The last thing that caught our eye in the forecast is both the GFS and ECMWF are showing an upper level wave sliding down the Cascades Saturday or Sunday with some east winds around 10 to 15 knots over our Cascades. After doing some spaghetti and cluster analysis on the 500mb heights, we think this scenario has a 30% chance of happening. Other solutions show a stronger ridge in place, which will still push temperatures higher for locations west of the Cascades. Overall, the take home impacts will be increasing heat and fire weather threats next weekend. -Smith && .AVIATION...08/12Z TAFS...Mid and high level clouds have come ahead of a cold front. The front will bring rain, breezy southerly winds, and a mix of IFR/MVFR conditions to the coast as it arrives this morning. Rain will spread inland to the Cascades this morning with areas of MVFR, local IFR, and mountain obscurations. Guidance supports ceilings lowering to MVFR with periods of reduced visibilities starting around 18z at Roseburg. East of the Cascades, areas of light rain are expected with local MVFR conditions in the afternoon. Lighter showers will linger behind the front tonight, with areas of MVFR ceilings and local IFR continuing west of the Cascades. && .MARINE...Updated 300 AM PDT Monday, June 8, 2026...A cold front today will bring gusty, stronger southerly winds and rain through tonight. Steep seas are in all of the Southern Oregon waters through 7 AM. Very steep seas and south winds that will approach gale force will come after 7 AM for areas north of Cape Blanco, and this will continue through this afternoon. Steep seas continue south of Cape Blanco through this time, and northern waters will see steep seas again later this afternoon. Improved conditions are expected later Tuesday into Wednesday morning with seas dominated by a west-northwest swell at 10 seconds. A thermal trough pattern is likely for the latter half of the week through next weekend. Expect the return of gusty north winds with steep to very steep seas from Thursday onward. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...CA...None. PACIFIC COASTAL WATERS...Small Craft Advisory until 11 AM PDT Tuesday for PZZ356-376. Small Craft Advisory until 8 AM PDT this morning for PZZ350-370. Small Craft Advisory from 7 PM this evening to 11 AM PDT Tuesday for PZZ350-370. Gale Warning from 8 AM this morning to 7 PM PDT this evening for PZZ350-370. && $$

379 FXUS66 KEKA 080703 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1203 AM PDT Mon Jun 8 2026 .KEY MESSAGES... - Rain on Monday for the North Coast, with the highest amounts north of Cape Mendocino. - Much warmer weather next week into the weekend. - Elevated fire weather conditions in Lake County with low afternoon relative humidity and gusty winds Wednesday through Thursday. && .SYNOPSIS...Rain will return to the North Coast Monday with the greatest amounts north of Cape Mendocino in Humboldt and Del Norte counties. Dry conditions will return starting on Tuesday with hot temperatures expected across the interior Wednesday into next weekend. && .DISCUSSION... .SHORT TERM...(Through Thursday) A storm system is expected to bring much needed rain to portions of the region on Monday into Monday night. Rain will spread over Humboldt and Del Norte counties in the morning hours. Rain will be generally light to moderate with rain rates in Humboldt and Del Norte counties up to a tenth of an inch an hour along the coast and higher in the mountains from approximately 10 am to 5 pm. Rainfall totals could approach an inch near Crescent City to as much as an inch and a half in the mountains of Del Norte before the front finally sweeps through Monday night. Rainfall totals will decrease toward the south and inland with around a quarter inch in northwestern Mendocino to only a tenth of an inch or less in eastern Trinity and the rest of Mendocino County. Lake County could be the one location in our forecast area that will see almost no rain at all. Behind the front an upper level ridge will quickly build over the West Coast with 850 mb temperatures warming to around 25C by Thursday. This will allow interior temperatures to warm considerably, back to near or exceeding 100 degrees for many locations. Additionally, the building ridge will enhance northerly flow over the region and moderate offshore flow Wednesday through Thursday will likely bring dry, offshore flow to Lake County. See the fire weather discussion for more info. .LONG TERM...(Friday through Monday) Upper level ridging is expected to continue to build over the West Coast Friday into the weekend. As the ridge builds the thermal trough may approach the coast over the weekend allowing temperatures to warm at the coast. Depending on coastal cloudiness and any southerly surges of stratus, coastal areas could be quite warm Friday and Saturday with highs approaching the 70 degree mark. Interior areas will likely cap out around 100 degrees with 850 temperatures never really warming too much more through the weekend. && .AVIATION...A storm system will bring rain to ACV and CEC today with ceilings falling into IFR and possibly LIFR as the day progresses. Rain will be moderate at times with gusty south winds in excess of 20 kt at CEC. Farther south and inland rain is expected to be lighter but ceilings will also fall across much of the area into MVFR or lower, except maybe in Lake County. Conditions will improve gradually overnight but abundant moisture along the Humboldt and Del Norte coastlines could leave low ceilings and reduced visibilities into Tuesday morning. && .MARINE...Northerly winds will decrease overnight and become southerly as a storm system approaches the area. South winds will briefly exceed small craft criteria during the day on Monday in the northern zones with a few gusts to near gale possible. Winds will be brief enough that the steep seas won`t have much time to build considerably. Thus, only a brief period of small craft winds and seas are expected Monday into Monday evening. The front will shift through the area Monday evening leaving high pressure to rebuild over the eastern Pacific and a thermal trough to build over interior California. This will result in increasing northerlies once again and a return to small craft north winds and seas Tuesday into Wednesday and possible gales late in the week. && .FIRE WEATHER...Wetting rains are expected in Del Norte and Humboldt counties on Monday into Monday night. Dry conditions will then return Tuesday into Wednesday with temperatures warming considerably across the interior. By Thursday, high temperatures could be exceeding 100 degrees in some interior valley locations. At the same time, northerly flow is expected to enhance in the northern Central Valley of California Wednesday morning into Thursday. A slight offshore component will result in gusty conditions in portions of Lake County. Afternoon relative humidity values in the teens and poor overnight recoveries along with the gusty winds in excess of 20-30 mph on the east side of the county will result in an increased fire weather threat. Fuels still remain marginal across the county which is holding back the issuance of a Fire Weather Watch at this time, but depending on how the storm tracks today, a watch may need to be issued sometime in the next 24 hours. .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory from noon to 9 PM PDT Monday for PZZ450. Small Craft Advisory until 1 AM PDT Monday for PZZ455-475. Small Craft Advisory from 10 AM to 7 PM PDT Monday for PZZ470. && $$ NOTE: The full forecast discussion is now regularly issued between 10 am/pm and 1 pm/am. Additional updates will be issued as needed. Visit us at https://www.weather.gov/eureka Follow us on Facebook and Twitter at: https://www.facebook.com/NWSEureka https://www.twitter.com/NWSEureka For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png

727 FXUS66 KMTR 081151 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 451 AM PDT Mon Jun 8 2026 ...New AVIATION, MARINE... .KEY MESSAGES... Updated at 1201 AM PDT Mon Jun 8 2026 - Cooler temperatures persist through Tuesday - Chance for coastal drizzle this evening into early Tuesday - Warmer and drier conditions return mid to late week with moderate risk of heat-related illnesses in the interior - Elevated fire weather concerns in the interior North Bay late Wednesday and Thursday && .SHORT TERM... Issued at 1201 AM PDT Mon Jun 8 2026 (Today and tonight) High level clouds are streaming over the Bay Area and Central Coast as a trough continues to impact the West Coast. The latest reports from the Bodega Bay profiler suggest a marine layer around 1000-1500 feet has developed, but owing to the incoming high clouds inhibiting radiative cooling, not sure if we will see much of a stratus deck tonight. Cooler temperatures will persist today as an upper level low reinforces the troughing pattern, with high temperatures reaching the 70s across the inland valleys, perhaps the lower to middle 80s in the warmest spots, the middle 60s to the lower 70s near the SF Bay and the Santa Cruz coastal plain, and the middle 50s to lower 60s along the Pacific coast and southern Monterey Bay. Once again, breezy and gusty onshore pattern winds will develop this afternoon and evening with wind gusts reaching 20 to 30 mph along the coast, through gaps and passes, and at the ridgelines, with favored locations in the Salinas Valley and the Altamont Pass seeing gusts of 35 to 40 mph. This evening into the early morning of Tuesday, some coastal drizzle might develop across the northern reaches of Sonoma County as a weak cold front makes its way through the state, but elsewhere in the region, rain chances have backed off. Rainfall amounts will range from a tenth of an inch in favored locations in coastal Sonoma County, to a trace across other parts of the coastal Bay Area, to nonexistent pretty much everywhere else. && .LONG TERM... Issued at 1201 AM PDT Mon Jun 8 2026 (Tuesday through Sunday) Tuesday will see a slight warming trend as the trough begins to make its way eastward, as the inland valleys sees highs rising into the middle 70s to middle 80s. Afterwards, temperatures will rise dramatically on Wednesday with the departing trough allowing a strong ridge to develop in the eastern Pacific and spread its influence into the West Coast. The current forecast for the inland valleys places high temperatures into the middle 80s to middle 90s with particularly warm areas in the North and East Bays and interior Central Coast reaching the triple digits. There`s still some caution to be noted with the warmest temperatures. The previous forecaster noted that ensemble model runs were showing a wide range of possible highs for Wednesday and Thursday. This is still somewhat true, particularly on Thursday and especially beyond. Drilling into a specific example, the current forecast for the Livermore area suggests high temperatures in the middle to upper 90s for Wednesday through Friday. NBM model statistics reveal that the spread between the 25th and 75th percentile high temperature forecasts for Livermore is around 5 degrees, while the spread for the 10th and 90th percentile highs hovers around 8 to 9 degrees. In other words, if you look at the range of possible high temperatures for Thursday, when the current high temperature forecast is 99, there`s a 50% chance that when the Livermore region reports its high temperature for Thursday, it falls between 96 and 101 degrees, and there`s an 80% chance that the high falls between 94 and 103 degrees. All of this to say, don`t be surprised if the forecast highs continue to fluctuate as the models come into better agreement. Hot temperatures will continue into Friday, but will start to dip as the inland highs reach the upper 80s to middle 90s. Beyond that, the spread in the forecast becomes even wider still, and ensemble model cluster analysis suggests that the conditions will depend critically on if, and how, the ridge interacts with potential downstream trough development. The hot temperatures across the middle and later portions of the week will contribute to Moderate HeatRisk across the inland regions. This corresponds to a moderate risk of heat-related illnesses, especially for people sensitive to heat including children, the elderly, pregnant women, people with chronic health conditions, and people who work or live outside without adequate cooling or shelter. People spending time outdoors should take frequent breaks in the shade and drink plenty of water. In addition, the hot temperatures combined with gusty north winds and low humidities will contribute to fire weather concerns across the interior North Bay mountains late on Wednesday into Thursday. More information will be available in the FIRE WEATHER section. Remember, one less spark, one less wildfire. && .AVIATION... (12Z TAFS) Issued at 413 AM PDT Mon Jun 8 2026 VFR prevails for the remainder of today for a majority of our terminals. KHAF, KMRY and KSNS will have MVFR cigs through mid- morning today. Gusty onshore flow will spread across our area this afternoon and persist into the evening hours. Deeper moisture associated with a disturbance well to our north will result in widespread MVFR cigs developing around sunset and persisting through the remainder of the forecast period. Vicinity of SFO...VFR will prevail for the remainder of today with gusty onshore flow increasing by late morning and persisting through sunset. Moderate to high confidence that MVFR cigs will develop around sunset and persist for the remainder of the TAF period. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...MVFR cigs expected to lift by late morning with gusty onshore flow this afternoon into the evening hours. Moderate to high confidence that MVFR cigs will return this evening prior to sunset and persist through the remainder of the TAF period, with a slight chance of IFR/LIFR late tonight into early Tuesday morning. && .MARINE... (Today through Saturday) Issued at 413 AM PDT Mon Jun 8 2026 Winds and seas will continue to ease today through late tonight. Overnight into early Tuesday morning fresh to moderate northwesterly wind and seas will begin to build again, with hazardous conditions for small craft developing by mid-morning across both the outer and inner waters. Gale force wind gusts are possible by early Wednesday morning over the outer waters. && .FIRE WEATHER... Issued at 1201 AM PDT Mon Jun 8 2026 Hot temperatures, gusty north winds, and low humidities across the North Bay interior mountains will raise the fire weather threats late on Wednesday into Thursday, with a particular emphasis on the interior mountains of Napa County. Although the strongest winds will remain within the Sacramento Valley, gusts of 25 to 35 mph are expected to spread into Napa County, with stronger gusts of 40-50 mph possible along the Vaca Mountains along the county`s eastern edge. Meanwhile, daytime humidity retention will be very poor with relative humidity values as low as 10-15%, while overnight recoveries are likewise poor as RH values top out at 20-30%. Thus, fuels are expected to dry rapidly, leading to the elevated fire weather concerns. It`s a little too early to put out fire weather products at this stage, but this will be re-evaluated today and Tuesday as the dry conditions approach. Elsewhere across the district, conditions remain hot and dry, but we`re not expecting winds to be as strong as they are across the interior North Bay. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 9 AM Tuesday to 3 AM PDT Wednesday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm. Small Craft Advisory until 3 PM PDT this afternoon for Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm. Small Craft Advisory until 1 PM PDT this afternoon for Pt Pinos to Pt Piedras Blancas 0-10 nm. Gale Warning from 1 PM this afternoon to 9 PM PDT this evening for Pt Pinos to Pt Piedras Blancas 0-10 nm. && $$ SHORT TERM...DialH LONG TERM....DialH AVIATION...JM MARINE...JM Visit us at www.weather.gov/sanfrancisco Follow us on Facebook, X, and YouTube at: www.facebook.com/nwsbayarea x.com/nwsbayarea www.youtube.com/nwsbayarea

165 FXUS66 KOTX 081120 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 420 AM PDT Mon Jun 8 2026 .KEY MESSAGES... - Frost expected across the Northern Valley`s into Monday morning. - Showers Monday afternoon through Tuesday thunderstorms and gusty winds Tuesday. - Drier and warmer midweek through weekend with potential Heat Risk. && .SYNOPSIS... A system brings rain into the region Monday evening into Tuesday morning. Tuesday will be breezy with showers and a threat for isolated thunderstorms. The rest of the week will be mostly dry, with warming temperatures. Widespread 80s to low 90s are forecast by the weekend. && .DISCUSSION... Today through Wednesday: A low will be swinging through the Pacific Northwest bringing widespread showers, gusty winds, and isolated thunderstorms. The low comes in over Southwest WA Monday afternoon and moves through Northeast WA Tuesday. While Monday will start stable and dry, a warm front will press into the Inland Northwest from Oregon by the afternoon. Moisture associated with the warm front is around 0.7-1 inch (140-160 percent of normal). The region has a 60 percent chance for locations to receive at least a tenth of of rain by Tuesday morning, with the lowest chances over the central basin. The cold front will swing through Tuesday and bring increased threat of thunderstorms and gusty winds. Ensembles are showing CAPE of 100-500 J/kg with the afternoon instability. It is enough for isolated thunderstorm threat with small hail, gusty winds, and brief heavy rains. Winds behind the cold front will be gusty with 850mb winds of 30-40 kts and surface winds into the 20 mph range. Gusts are not expected to reach higher much higher than the low 40 mph range. Cascade Valleys have a near 50 percent probability of exceeding 40 mph. The low lingers through Wednesday morning with light showers continuing over Northeast WA and ID Panhandle. Increased cloud cover will keep the highs on the cooler side and lows on the warmer side. Highs will be in the 60s and low 70s. Overnight lows will be in the 40s. Wednesday Afternoon through Sunday: Ensembles are showing a ridge building along the coastline with a high centered 40 N, 140 W. It will keep the region a dry, with a warming trend through the rest of the period. Highs will steadily climb a few degrees each day to reach the 80s and low 90s by Sunday. Minor to moderate heat risk impacts expected over the weekend. Overnight lows will climb slower and end in the 50s by Monday morning. Any chance of precip will be over the North Idaho Panhandle Friday and Saturday as the ensembles push a weak shortwave into the area from central Canada. /JDC && .AVIATION... 12Z TAFs: Clouds increase today, with mostly cloudy to cloudy conditions developing today into tonight. Rain will develop near the Cascades between 18-00Z, including KEAT/KMWH and over the remaining TAF sites toward 00Z-03Z. VFR conditions will start off the period and then MVFR conditions will be more likely through the evening into the early overnight at most TAF sites. Those MVFR conditions come near KEAT/KMWH around 02-04Z and further east toward 06-08Z. A slim chance for t-storms comes in late this evening into the overnight. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence VFR conditions at all TAF sites through 00Z. Moderate confidence in MVFR conditions developing between 03-08Z tonight. There is a low confidence risk (10-15%) for IFR conditions between 06-12Z at KEAT/KMWH/KGEG/KSFF/KCOE. Low confidence in thunderstorm developing at TAF sites late tonight. ----------------------- Confidence descriptors: Low - Less than a 30 percent chance Moderate - 30 to 70 percent chance High - Greater than a 70 percent chance For additional probabilistic information for NWS Spokane airports, please refer to the Aviation Dashboard on our webpage: https:/www.weather.gov/otx/avndashboard && .Preliminary Point Temps/PoPs... Spokane 72 47 64 43 65 43 / 0 90 100 20 0 0 Coeur d`Alene 72 49 59 44 62 43 / 0 90 100 70 10 0 Pullman 71 45 59 41 60 40 / 0 90 80 40 0 0 Lewiston 78 54 68 49 68 46 / 0 90 70 30 0 0 Colville 72 42 63 36 68 38 / 0 90 100 80 10 0 Sandpoint 70 47 56 42 59 42 / 0 80 100 100 20 0 Kellogg 73 48 56 43 57 42 / 0 80 100 90 40 0 Moses Lake 73 46 71 42 72 42 / 10 90 40 0 0 0 Wenatchee 70 53 67 48 70 49 / 30 90 30 0 0 0 Omak 74 48 71 42 72 44 / 10 90 80 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...Frost Advisory until 8 AM PDT this morning for Northeast Mountains-Okanogan Highlands-Western Okanogan County. ID...Frost Advisory until 8 AM PDT this morning for Northern Panhandle. && $$

218 FXUS66 KPDT 081157 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 457 AM PDT Mon Jun 8 2026 .KEY MESSAGES... - Widespread rain today, heaviest over the Cascade and Blue mountains - Breezy to windy today through Wednesday, strongest on Tuesday - Warmer, drier weather late week through the weekend && .DISCUSSION... Water vapor imagery shows a closed mid/upper-level low rotating in the Gulf of Alaska this morning. Meanwhile, a shortwave is evident southeast of the low, diving towards the Pacific Northwest. 00Z ensemble NWP guidance is in excellent agreement that the shortwave will move inland later this afternoon through tonight, ushering in widespread shower chances. For the lower elevations, precipitation totals are currently forecast to be light (a few hundredths of an inch to a couple tenths of an inch) while the mountains will see higher precipitation amounts of several tenths of an inch (Blues) to locally over an inch (Cascades, especially in Washington). Ahead of the precipitation, warm temperatures in the 70s coupled with locally breezy winds and low relative humidity in the teens to lower 20s are forecast for roughly the eastern half of our area of responsibility. Elsewhere, cooler temperatures and higher relative humidity are expected beneath thicker cloud cover and/or in light rain. Per latest 00Z NWP guidance, breezy southerly to southwesterly 850-hPa winds of 15-35 kts are expected (90 percent confidence) to overspread the region this afternoon, becoming southwesterly to westerly and increasing in magnitude to 35-55 kts overnight through Tuesday morning, then becoming westerly to northwesterly and slackening to 25-40 kts Tuesday afternoon and 15-25 kts on Wednesday. NBM probabilities of exceedance suggest very high (80-99 percent) chances of reaching or exceeding advisory-level wind gusts (45 mph or greater) 11 PM PDT tonight (Monday night) through 11 PM PDT Tuesday across the foothills of the Blue Mountains, north-central Oregon, the Simcoe Highlands, and through the Kittitas Valley and eastern Columbia River Gorge. Forecaster confidence in these probabilities is a little lower (70-90 percent) based on the timing of the strongest winds aloft not coinciding with peak mixing (i.e. strongest winds are at night), but forecast cross-Cascade pressure gradients are sufficiently strong (8-12 hPa difference between PDX and GEG) Tuesday afternoon to support wind headlines. Will note the NBM indicates a low (20-40 percent) chance of reaching warning-level wind gusts (58 mph or greater) for our most wind-prone locations. The remnants of the aforementioned low in the Gulf of Alaska are expected (80-90 percent confidence) to slide over the Pacific Northwest late Tuesday through Wednesday, resulting in continued mild temperatures and rain showers (mainly for the mountains). Weak instability (CAPE of up to a couple hundred J/kg) coupled with forcing from the shortwave may facilitate an isolated thunderstorm over the eastern mountains Tuesday afternoon, but chances are low (5-15 percent). Warmer, drier conditions are then forecast Thursday through the weekend as an upper-level ridge of high pressure will likely (80-90 percent confidence) build offshore in the Pacific and eventually shift east into the Pacific Northwest. Ensemble cluster analysis reveals some differences in the amplitude and location of the ridge through the weekend, and a low (10-20 percent) chance of a cooler, wetter pattern with the ridge axis located well offshore and shortwave troughing digging into the Pacific Northwest from the north. While outside of the current forecast period, temperatures are forecast to peak on Monday, with a 50-80 percent chance of >= 90 degrees, and 5-15 percent chance of >= 100 degrees for the lower elevations. Moreover, probabilistic HeatRisk guidance indicates a 15-40 percent chance of Major (level 3 of 4) HeatRisk for the majority of the lower elevations within the greater Columbia Basin region on Monday. This level of heat affects anyone without cooling/hydration. && .AVIATION /12Z TAFS THROUGH 12Z TUESDAY/... VFR conditions are forecast for all sites through the period. An incoming low-pressure system will bring light rain to all terminals by afternoon or evening. MVFR CIGs are not forecast, but cannot rule them out (5-30 percent confidence, highest at YKM). Winds will become breezy later today, especially overnight into Tuesday morning when gusty winds are likely (90 percent confidence), but confidence in exact timing/magnitude of winds at terminals is low (30 percent). && .Preliminary Point Temps/PoPs... PDT 71 48 68 43 / 20 90 40 0 ALW 75 52 67 47 / 0 90 60 30 PSC 75 49 73 44 / 20 90 30 0 YKM 70 48 71 42 / 50 80 10 0 HRI 73 48 71 44 / 20 80 20 0 ELN 66 45 64 39 / 50 90 40 0 RDM 64 43 65 32 / 80 60 10 0 LGD 71 46 63 41 / 0 100 80 20 GCD 70 44 66 37 / 40 100 40 10 DLS 68 53 68 49 / 80 90 30 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...86 AVIATION...86

218 FXUS65 KREV 081005 AFDREV Area Forecast Discussion National Weather Service Reno NV 305 AM PDT Mon Jun 8 2026 .KEY MESSAGES... * Cooler temperatures continue today with shower chances returning through early Tuesday morning. * Gusty winds will bring recreation and travel impacts today along with elevated fire weather concerns. * Temperatures will trend warmer starting Tuesday, allowing for minor to moderate HeatRisk within the region for the latter half of the week. && .DISCUSSION... The latest RAP analysis shows an upper trough over the NW CONUS this morning, which is allowing for the high cloud cover over the CWA seen in current satellite imagery. Going through today, model guidance shows another wave breaking off from the a low over the Gulf of Alaska and reinforcing the aforementioned trough. With this setup aloft, the current cooling trend continues today with W NV valley highs being in the upper 70s to lower 80s range and Sierra communities seeing highs in the middle 60s to lower 70s range. During the afternoon and going into tonight, the forecast is also calling for a ~15-35% chance for light showers in the NE CA, the Northern Sierra, and Northern Washoe County with better chances staying north of the OR border. Pershing and Churchill County also will see around 10-20% chances for showers as well during this time while the rest of the CWA stays mostly dry with precipitation chances being in the single digits. Not expecting much moisture from these showers with the resident drier air in the lower levels potentially allowing for virga over rain. But if a shower develops and precipitation does reach the ground, QPF amounts look to be a few hundredths at best. However, the main concerns today comes from the gusty winds expected within the region. Winds start to pick up an hour or two before noon generally out of the west to southwest and will gust up to around 30-40 mph (up to around 45 mph in wind prone areas and up to around 55 mph in the Sierra ridges) going through the rest of the day. As these winds will cause choppy conditions on area lakes, Lake Wind Advisories are in effect today (please see the product for more details). Blowing dust reducing visibility may be possible today within the W NV Basin and Range especially near desert sinks and playas, so please use caution if traveling through these areas. These winds will also bring an elevated to locally critical fire weather concern to portions of the region, so please refer to the Fire Weather section for more details on this. Models project the upper trough progressing eastward on Tuesday followed by an upper ridge beginning to build over the region on Wednesday through the rest of the week. This signals dry conditions for the remainder of the week as temperatures trend warmer. Above normal temperatures for June are in the forecast starting on Wednesday and continue into the weekend. The W NV and NE CA valleys are forecast to see high temperatures in the lower to middle 90s Thursday through the weekend while Sierra communities are currently seeing highs between the upper 70s and the middle 80s. We`ll be keeping an eye on this as the latest NWS HeatRisk product is showing widespread minor to moderate HeatRisk within W NV, but please plan now for these warmer temperatures if you have outdoor plans later this week. -078 && .AVIATION... VFR conditions are expected across the region today and tonight. Increased winds gusting up to around 25-35 kts are to be expected starting in the late morning that may last through at least around 10/06Z which will allow for LLWS and mountain wave turbulence within the region. Reductions in visibility may be possible at KLOL and KNFL due to blowing dust as well. Light shower chances between 15-35% are in the forecast in the afternoon and evening within the region especially portions closer to the OR border, but not anticipating sub-VFR conditions for any of the TAF sites at this time. -078 && .FIRE WEATHER... Elevated to locally critical fire weather conditions are expected during the afternoon today when west to southwest winds are forecast to increase. Gusts to 35 mph will overlap relative humidities ranging 10-15% across pockets of Pershing, Churchill, Lyon and Mono counties for a couple hours Monday afternoon. HRICH/078 && .REV Watches/Warnings/Advisories... NV...Lake Wind Advisory from 11 AM this morning to 11 PM PDT this evening NVZ002>004. CA...Lake Wind Advisory from 11 AM this morning to 11 PM PDT this evening CAZ071-072. && $$

836 FXUS66 KSTO 071841 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1141 AM PDT Sun Jun 7 2026 For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing. .KEY MESSAGES... -Elevated Fire Weather conditions in the Sacramento Valley continue today due to breezy winds and low humidity. Biggest impacts in the northern Sac Valley. -Significant warm up starting mid-week brings potential for triple digits into the weekend. -Gusty north winds and low humidity will lead to Elevated Fire Weather Conditions in the Valley late in the week. && .DISCUSSION... ...Today... Near normal temperatures continue today, with mid to upper 80s expected in the Valley, Delta, and lower foothills. Daytime humidities remain low, generally between 10 and 25% (lowest in the northern Sacramento Valley). This, in combination with lingering gusty winds means elevated fire weather conditions remain in the northern Sacramento Valley through the afternoon and early evening. ...Monday and Tuesday... Precipitation chances for Monday and Tuesday have virtually disappeared with the most recent forecast update. Temperatures will remain near normal through Tuesday (low to mid 80s for the Valley), with a slight increase to daytime relative humidities. The Delta and adjacent portions of the Valley will see breezy to gusty winds on Monday afternoon/evening (65 to 90% chance of 30 mph or higher gusts in the Delta, 30 to 50% in the nearby Valley), though minimal impacts are expected currently. ...Wednesday through Saturday... Northerly winds increase as the early-week trough shifts into the Great Basin. Gusty winds and low humidity will bring increased fire weather concerns across the Valley, Delta, and lower foothills, especially Wednesday and Thursday. To this point, we have issued a Fire Weather Watch from 11am Wednesday to 5pm Thursday. Temperatures trend higher starting mid-week as well, with widespread Moderate HeatRisk, areas of Major HeatRisk, and potential for triple digit high temperatures in the Valley, Delta, and lower foothills through the weekend. && .AVIATION... VFR conditions over the next 24 hours. Northwest surface wind gusts 15 to 20 kts in the northern Sacramento Valley until 22Z Sunday. West wind gusts 15 to 20 kts in the vicinity Delta after 21Z Sunday. Sustained winds 12 kts or less elsewhere. && .STO WATCHES/WARNINGS/ADVISORIES... Fire Weather Watch from Wednesday morning through Thursday afternoon for Butte County Below 1000 ft-C. Solano County including Fairfield-C. Yolo/NE Solano including Woodland-Central Colusa County Incl. I-5-Central Glenn Co & Interstate 5-Eastern Colusa County-Eastern Glenn County-N. Sac Valley in Tehama County-Sac Metro/W. El Dorado/Amador County-Sacramento County Delta-Shasta Metro-Sutter/Yuba counties below 1000 ft-W. Yolo County including Capay/I-505. && $$

269 FXUS65 KMSO 080644 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 1244 AM MDT Mon Jun 8 2026 .DISCUSSION... KEY MESSAGES: - Widespread frost this morning - Cool and wet conditions Tuesday through Wednesday Today through Wednesday: A chilly start to the workweek is underway under mostly clear skies as high pressure settles over the region. Frost Advisories remain in effect through mid-morning, as morning lows are expected to drop into the low to mid-30s across many valley locations; sensitive vegetation should be protected. An upper-level trough moving onto the Pacific Northwest coast this afternoon will strengthen southwesterly flow aloft, causing high- and mid-level clouds to gradually lower and thicken. Virga showers will become common by this evening as the mid- levels saturate. Rain will eventually reach the ground and become widespread overnight into Tuesday morning, with periods of showers continuing through Wednesday. Additionally scattered thunderstorms are expected Tuesday afternoon and evening. The heaviest rainfall is forecast across north-central Idaho and along the Continental Divide in northwest Montana, where a half-inch or more is likely (70 to 90 percent chance). Broad western Montana valleys will see lighter rainfall amounts due to downsloping effects. In addition to the rain, breezy winds of 25 to 35 mph and noticeably cooler temperatures will create raw, cold conditions in the high country. Backcountry recreationists should prepare for winter-like weather, as snow levels will drop to roughly 6,000 to 6,500 feet by Wednesday morning, with light accumulations of 1 to 2 inches possible. Thursday through Sunday: Most ensemble clusters continue to indicate a drier trend for Thursday. Another round of frost is possible Thursday morning, though it currently appears less widespread than this morning`s event. Most guidance points toward a lingering trough across the Northern Rockies from Friday through this coming weekend as high pressure builds along the West Coast. While specific details remain sparse due to a lack of model continuity regarding the depth and timing of potential disturbances, two main trends stand out: a weak cold front will drop down from the north, keeping temperatures near seasonal values, and periodic shower chances will persist, primarily across western Montana, and less so for north- central Idaho. && .AVIATION...VFR conditions are expected to prevail through the daytime hours as mid- and high-level clouds gradually overspread the region under strengthening southwesterly flow aloft. The primary exception will be localized, shallow valley fog early this morning in areas that received rainfall yesterday evening. While surface winds will remain generally light across most terminals, deeper diurnal mixing will support afternoon southerly wind gusts of 20 to 25 knots at KBTM, KHRF, and KSMN. Virga showers will become common this evening as mid-levels saturate. Precipitation is forecast to steadily reach the ground and expand in coverage from southwest to northeast overnight into Tuesday morning. This widespread rain will lead to gradually lowering ceilings and visibilities, with a transition to occasional MVFR conditions expected by Tuesday morning. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...Frost Advisory until 9 AM MDT this morning for Flathead/Mission Valleys...Kootenai/Cabinet Region...Lower Clark Fork Region...Missoula/Bitterroot Valleys. ID...Frost Advisory until 9 AM MDT /8 AM PDT/ this morning for Eastern Lemhi County...Northern Clearwater Mountains... Orofino/Grangeville Region...Southern Clearwater Mountains. && $$

691 FXUS65 KBOI 081151 AFDBOI Area Forecast Discussion National Weather Service Boise ID 551 AM MDT Mon Jun 8 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Warmer today, especially in southern Idaho. - Widespread showers tonight through Tuesday morning, with a slight chance of thunderstorms Tuesday. - Warming and drying Thursday through Saturday. && .SHORT TERM /Through Wednesday Night/... Issued 315 AM MDT MON JUN 8 2026 Warmer today, especially in Idaho, as a flat upper ridge passes overhead, before a north Pacific trough comes in tonight and Tuesday. Southern Idaho will be up to 15 degrees warmer than yesterday, while the central Idaho mountains warm about 10 degrees, and eastern Oregon only about 5 degrees due to clouds increasing sooner there. Showers should begin in Harney County around 2 PM PDT this afternoon, then spread eastward to the Idaho border by 6 PM MDT, and to Twin Falls before midnight. The trough looks moist and energetic now while it is still offshore but latest models weaken it when it gets to our CWA tonight. Even so, all parts of our CWA should get at least some rain tonight and Tuesday morning. There is also a 15 percent chance of thunderstorms in northern areas Tuesday. But eastern OR will already begin clearing by noon Tuesday and even western ID should start clearing Tuesday afternoon, except in the central ID mountains where showers will continue through Wednesday morning. Total forecast pcpn has also decreased, now only .25 to .50 inch in the Idaho mountains tonight through Wednesday, and less than .20 inch elsewhere. The upper trough is also forecast shallower than before, and with less cold air the snow level will not dip as low as previously forecast. Light snow will still fall in the central ID mountains, but less than one inch is forecast below 6000 feet. Tuesday will still be quite cool with high temps in the 50s and lower 60s in the mountains, and mid 60s to mid 70s in the valleys. Pre-frontal southeast through southwest wind gusts will increase to 25 to 35 mph this afternoon in open areas, and post-frontal west winds will become at least that strong Tuesday, especially on the Idaho side where gusts should reach 40 mph Tuesday afternoon, decreasing Tuesday night. && .LONG TERM /Thursday through Monday/... Issued 315 AM MDT MON JUN 8 2026 The secondary upper trough that models forecast in our CWA Wednesday has now been shifted north of our CWA so only our northern mountains should still have showers Wednesday. Northwesterly flow aloft will keep our CWA cool Wednesday, but Thursday will be noticeably warmer with highs reaching 80 degrees in the southern valleys and 60s through 70s elsewhere. Clear skies and further warming are expected Friday through Sunday but the warming will be limited by northerly wind component aloft. && .AVIATION /12Z Monday through Tuesday/... Issued 542 AM MDT MON JUN 8 2026 Showers beginning in eastern Oregon mid-afternoon today, spreading eastward with a cold front into ID this evening. Mountains becoming obscured with local MVFR in clouds/pcpn in northern mountains Monday night. A 10-15% chance of thunderstorms Tuesday north of the Snake Basin. Snow level briefly lowering to 5500-6000 feet MSL Tuesday morning, then rising to 7000-8000 feet MSL Wednesday. Surface winds: variable less than 10 kt, becoming S-SE 7-12 kt with gusts 20-25 kt after 08/18Z Monday. Winds aloft at 10kft: SW 15-20 kt until 18Z Monday, increasing to 20-25 kt after 18Z. KBOI...VFR with increasing high clouds. Rain after 09/02Z, Surface winds: SE less than 10 kt, becoming SE 7-12 with gusts to 20 kt after 15Z. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...None. OR...None. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise AVIATION.....LC SHORT TERM...LC LONG TERM....LC

849 FXUS65 KLKN 080948 AFDLKN Area Forecast Discussion National Weather Service Elko NV 248 AM PDT Mon Jun 8 2026 .KEY MESSAGES... * Elevated and critical fire weather conditions today * Light precipitation across northern Nevada beginning this evening thru Tuesday night * Fair weather and warmer temperatures the latter half of the week and this weekend && .DISCUSSION... (Today through next Monday) WEATHER PATTERN OVERVIEW: A weak surface cold front associated with a broad upper level trof will move thru the forecast area this evening from the west-northwest. Elevated south- southwesterly winds ahead of the front this afternoon will produce wind gusts 35 to 40 mph. Combined with low afternoon relative humidity, elevated to critical fire weather condtions will be present across the forecast area. This has prompted the issuance of a Red Flag Warning that will begin at 11 AM PDT and run thru 11 PM PDT today for portions of central and eastern Nevada where winds are expected to be strongest. Frontal boundary brings light rain showers into northern Nevada this evening with showers persisting into Tuesday evening. Central Nevada is expected to remain dry. Valley rainfall accumulations look to be around 0.10 inches or less with between 0.10 and 0.25 inches forecast across the high terrain. The best chance for a dry thunderstorm or two will be Tuesday afternoon, focused within Elko County, though PWATs and instability look rather marginal and cumulus buildups will be the most likely scenario with the majority of thunderstorm activity residing to the east in Utah. A weak thunderstorm or two may also be embedded along the frontal boundary this evening, though this is low confidence. Fairer weather will return Wednesday and persist thru the weekend under a more benign northwesterly flow regime as a broad region of high pressure resides off the west coast. A warming trend will be in place thru Friday with temperatures holding steady thru the weekend. Daytime highs will be in the low 80s to low 90s by Friday. The typical afternoon breezes can be expected with winds from the west- northwest. FORECAST CONFIDENCE & DEVIATIONS: High confidence in elevated to critical fire weather conditions this afternoon ahead of the weak cold front. Moderate confidence for periods of precipitation across northern Nevada this evening thru Tuesday evening but low confidence for thunderstorms. High confidence in fair weather beginning Wednesday. Opted for various model blends for the PoP and weather fields as NBM much too bullish. Otherwise only minor changes to the NBM forecast elsewhere. && .AVIATION...VFR conditions will prevail thru tonight. Elevated south-southwesterly winds present this afternoon at all terminals with gusts 20KT to 30KT present. Winds ease overnight while shifting west-northwesterly before increasing again during the day Tuesday. Potential for BLDU at all terminals this afternoon which may cause temporary reductions to VIS and create MVFR or IFR flight conditions. That said, there is not enough confidence to include BLDU in the TAFs at this time. && .FIRE WEATHER...Weak surface cold front moving thru from the west-northwest this evening will produce elevated south- southwesterly winds this afternoon along and ahead of the front. Gusts 35 to 40 mph will be present. Combined with low afternoon relative humidity residing around 15% or less, elevated to critical fire weather condtions are expected. This has prompted the issuance of a Red Flag Warning that will begin at 11 AM PDT and run thru 11 PM PDT today for fire weather zones 470, 425, 427, and 426. Frontal boundary also brings light rain showers into northern Nevada this evening with showers persisting into Tuesday evening. Central Nevada is expected to remain dry. The valleys will be hard pressed to observe a wetting rain and rainfall accumulations look to be around 0.10 inches or less. The high terrain looks to receive between 0.10 and 0.25 inches. The best chance for a dry thunderstorm or two will be Tuesday afternoon, focused in and near fire weather zones 469 and 470. Though PWATs and instability look rather marginal and cumulus buildups will be the most likely scenario with the majority of thunderstorm activity residing to the east in Utah. A weak thunderstorm or two may also be embedded along the frontal boundary this evening, though this is low confidence and is not included in the official forecast. Elevated west- northwesterly winds will be present Tuesday afternoon as well with gusts 30 to 35 mph expected. Minimum relative humidity looks to remain around 15% or higher Tuesday afternoon across most of the forecast area though readings around 15% or lower will likely be present across the southern half of fire weather zones 425 and 427 as well as zone 426. Elevated fire weather conditions will most likely be present in and near fire weather zone 425 where the stronger wind gusts will combine with relative humidity around 15% or less. Winds look to be slightly more modest across zones 427 and 426. && .LKN Watches/Warnings/Advisories... Red Flag Warning in effect from 11 AM through 11 PM PDT Monday for NVZ425-426-427-470. && $$ DISCUSSION...92 AVIATION...92 FIRE WEATHER...92