301 FXUS66 KSEW 061618 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 918 AM PDT Wed May 6 2026 .SYNOPSIS... An upper level ridge will remain over western Washington through Thursday. Onshore flow will continue throughout the week and will push additional rounds of morning marine stratus into the area the next few days. A dissipating frontal system will then move into the region on Friday, bringing the next chance of shower activity mainly to the coast and mountains. High pressure then looks to rebuild into the region over the weekend and remain situated across the area into early next week. && .SHORT TERM /TODAY THROUGH FRIDAY/... Cloudy start with onshore flow keeping the stratus in place over Western Washington this morning. Much like yesterday, temperatures could end up a bit cooler as a result of the lingering stratus, so expect highs to only top out in the mid 60s to low 70s across the interior today. Latest HREF probabilistic guidance only suggests about a 10-20 percent chance of temperatures exceeding 70 for the interior areas in and around the Seattle metro. The coast will stay cooler under the influence of the marine layer and looks to see afternoon temperatures top out in the upper 50s to low 60s. High pressure will remain in place over the area into Thursday. Expect another round of stratus to push into the interior on Thursday morning and for afternoon highs to generally be in the upper 60s to low 70s across the interior and upper 50s to low 60s for areas along the coast. A weak, dissipating frontal system will then approach the area on Friday as the ridge axis pushes inland. While the majority of the area looks to remain dry, this system will bring back a small chance for some shower activity mainly for areas along the coast and in the mountains. Any rain that does fall looks to remain light, with latest probabilities suggesting less than a 15 percent chance of more than a tenth of an inch of rain falling across the interior lowlands. The more notable impact from this system will be the increased cloudiness and slightly cooler temperatures, with most spots expected to only see highs reach the upper 50s to mid 60s. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... Ensemble clusters remain in good agreement that high pressure will build back into the Pacific Northwest over the weekend and remain situated over the area into early next week. Meanwhile, deterministic guidance favors a weaker ridge, and brings some additional rounds of light precipitation to the northern tier of western Washington as systems pass to the north. Overall, expect mostly dry conditions to continue across the area and for temperatures to warm back up to above normal by early next week. More widespread Minor HeatRisk will return, with highs currently expected to be in the mid to upper 70s across the interior lowlands and mid to upper 60s along the coast. 14 && .AVIATION... High pressure over the region today with low level onshore flow. Western WA lowlands remained covered under marine clouds that have pushed into the Cascade valleys. Ceilings are mainly in IFR range this morning. The trend is for a gradual lift into MVFR conditions this morning with possible VFR conditions after 21z. Does not appear that will will totally break out today given the satellite imagery. Clouds will lower again overnight for IFR to MVFR conditions once again. KSEA...IFR to MVFR conditions this morning with a slow/gradual lift of ceilings (but not completely sct or clear). Low-end VFR possible after 21Z. A return to MVFR conditions expected overnight. S/SW wind to 10 kt. 33 && .MARINE... Surface high pressure will continue to remain offshore for the next couple of days with onshore flow continuing. Latest guidance has shown decreased probabilities of gale gusts over the Central and Eastern Strait of Juan De Fuca for this afternoon`s push down the Strait as a weak system passes by. Have replaced the Gale Watch with a Small Craft Advisory with more agreement that the wind strength will be less than originally anticipated. A gust or two up to gale strength cannot be ruled out though. Have also issued a Small Craft advisory for all of the coastal water zones as seas start to build towards 9 to 11 feet later this evening, lasting into Thursday - with some gusts up to 25 kts at times. Mazurkiewicz && .HYDROLOGY... The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated during this time as needed. && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...Small Craft Advisory until 5 AM PDT Thursday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca. Small Craft Advisory from 2 PM this afternoon to 5 AM PDT Thursday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm. && $$

986 FXUS66 KPQR 061738 AAB AFDPQR Area Forecast Discussion...UPDATED National Weather Service Portland OR 1035 AM PDT Wed May 6 2026 Updated aviation discussion. && .SYNOPSIS...Ridging aloft will maintain largely warm and dry conditions through the next week. The only exception will be a weak system arriving Friday into Saturday, which will bring briefly cooler temperatures but only minimal chances for even light rainfall. && .DISCUSSION...Now through Tuesday...A narrow upper-level ridge just off the West Coast will broaden through the workweek, driving generally persistent weather conditions across the region. Diurnally-varying marine cloud cover will reach inland overnight into the morning each day, yielding mist or drizzle in areas near the coast, before retreating back to the coast or offshore through the day. There remains uncertainty in the timing of daytime clearing which could greatly modulate high temperatures; the longer clouds persist through the morning, the cooler afternoon highs will be. Even in the reasonable coolest scenario, temperatures should reach near seasonal norms, and will more likely be at least a few degrees above normal each day. Diurnal west winds could also become breezy along the central Columbia River Gorge, with gusts to 25-30 mph in the afternoon and evening through the end of the workweek. Friday into Friday night, an upper-level shortwave trough will track over the top of the ridge. This feature has trended weaker in recent guidance, with impacts generally limited to enhanced cloud cover and temperatures a few degrees cooler. Rain chances are now minimal across the region, generally 5-15% along the coast and in coastal terrain from Tillamook northward, and in the Cascades north of US-26, peaking Friday afternoon and evening. To the south and at lower elevations inland, chances for even a hundredth of an inch of rain are now 5% or less. Resurgent upper-level ridging will see the warm and dry weather then continue this weekend into next week, including seasonably warm temperatures in the 60s along the coast and in higher terrain and 70s to around 80 degrees within inland valleys beneath clearing skies on Mother`s Day. -36 && .AVIATION...As of 1730Z Wednesday, ceilings have lowered to MVFR thresholds at all terminals, except IFR at KEUG. Although this stratus deck is not expected to completely clear out today, overcast skies should become scattered to broken by 20-23Z Wednesday with ceilings likely lifting to around 3500-4000 ft for inland TAF sites. Marine stratus is expected to resolidify late this evening into tonight, with MVFR ceilings becoming more widespread again for inland areas. Meanwhile, marine stratus should remain firmly in place through today and tonight along the coast with little to no improvement expected this afternoon. Winds generally remain light and variable around 5 kt or less at all terminals. KPDX AND APPROACHES...MVFR ceilings remain in place this morning, but should become scattered to broken by approximately 22Z Wednesday while simultaneously lifting to around 3500-4000 ft. Confidence is increasing for another round of high-end MVFR ceilings tonight (40-50% chance), most likely developing sometime between 06-12Z Thursday. -23 && .MARINE...Strengthening high pressure offshore will see northwest winds intensify and turn more northerly through today, while a broader onshore flow regime will favor continued marine overcast which thickens and lowers overnight before lifting and backing offshore each day through this week. These stronger winds by this afternoon along with a building northwest swell will push seas up to 7-9 ft by tonight, but a dominant swell period of 11-13 seconds should keep seas from becoming steep enough to present a hazard to small craft. Isolated gusts may exceed 20 kt this afternoon into this evening beyond 30 NM. As northerly flow weakens through Thursday and turns southerly on Friday as a weak system moves onshore, seas will ease back to 4-7 ft. Southerly gusts may briefly approach 20 kt on Friday afternoon before weakening again overnight. Chances for rain showers on Friday have fallen to 5-15%. High pressure will restrengthen offshore this weekend into early next week, supporting a reintensification of northerly winds. Chances for widespread gusts of 20-30 kt increases daily from Saturday through Tuesday, while seas continue at 4-8 ft. -36 && .PQR WATCHES/WARNINGS/ADVISORIES... OR...None. WA...None. PZ...None. && $$ www.weather.gov/portland Interact with us via social media: www.facebook.com/NWSPortland x.com/NWSPortland

783 FXUS66 KMFR 061744 AFDMFR Area Forecast Discussion National Weather Service Medford OR 1044 AM PDT Wed May 6 2026 .Updated AVIATION Discussion... && .AVIATION...06/18Z TAFs...Marine stratus is bringing IFR/MVFR conditions to the coastal locations and into the Umpqua Basin. The marine layer will gradually peel back to the immediate coast this afternoon, so conditions should improve to VFR in the Umpqua Basin but MVFR conditions will likely persist through the TAF period for coastal sites. Expect marine stratus to return to the Umpqua Basin again, bringing another round of MVFR/IFR ceilings tonight. Elsewhere, VFR conditions will continue through the TAF period with typical increases in afternoon/evening winds. /BR-y && .PREV DISCUSSION... /Issued 426 AM PDT Wed May 6 2026/ DISCUSSION (Today through Tuesday)... Key Points: * Limited impacts the next several days - Most notable will be the well above normal temperatures - Some areas 10-15+ degree above normal * Drying trend starts today - No signal for precipitation in the forecast at this time Further Details: A ridge of high pressure will build in over the region today as a long wave trough consumes much of the central and eastern CONUS. Overall, this ridge will be the dominated upper level pattern for the region through much of the forecast with one caveat Friday. There will be a weak shortwave entering the PacNW on Friday, but this is very progressive in the eastward progression and will likely only result in cooler temperatures for our area. Friday is the overall "coolest" day in the forecast, but we are still forecasting above normal temperatures on this day. There is a signal in the extended forecast for this ridge to essentially remain in place through middle parts of May. This could result in continued above normal temperatures and dry conditions which may result in an accelerated period of drying for fuels. Through May, the Climate Prediction Center is indicating a strong signal for above normal temperatures, and a weak signal for below normal precipitation chances. In fact, there is a signal for this trend to continue May-June-July with El Nino chances likely (61% chance) to emerge through this period, and persist through at least the end of 2026. -Guerrero MARINE...Updated 200 AM PDT Wednesday, May 6, 2026...An extended period of relatively calm conditions will continue through Friday, with west-northwest swell dominated seas likely remaining below 8 ft. Wind speeds briefly increase Thursday morning south of Cape Blanco, but remain below advisory conditions and quickly diminish in the afternoon. A thermal trough will develop Saturday morning and strengthen through the weekend, resulting in gusty north winds and steep seas through early next week. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...None. CA...None. PACIFIC COASTAL WATERS...None. && $$

167 FXUS66 KEKA 060717 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1217 AM PDT Wed May 6 2026 .SYNOPSIS...Weak high pressure building into the area will gradually warm inland temperatures through Thursday. Closer to the coast widespread low clouds will linger keeping temperatures cooler. Friday will see slightly cooler temperatures and more clouds. For the weekend and into early next highs are expected to warm each day with many inland areas seeing the 90s by Monday. && KEY MESSAGES: Near to above normal inland temperatures Wednesday and Thursday with some cooling Friday. Breezy north winds this weekend with well above normal temperatures inland. Minor to moderate heat risk is possible on Monday in Mendocino, Lake and Trinity counties. .DISCUSSION...High pressure is building over the area in the wake of a departing low. This will bring clearing skies and warming temperatures for some areas of Trinity county. The coastal counties and Lake county are seeing widespread stratus this morning. Some portions of Trinity county are also seeing stratus. This will likely slow the warming trend in these areas on Wednesday. Clouds are expected to clear back closer to the coast by the afternoon, but the coast is expected to remain fairly cloudy. Wednesday night into Thursday the area is expected to see less stratus, but it is still expected to make it quite a ways inland. This will again likely keep temperatures cooler than expected in these areas. Thursday night into Friday a weak front will bring some mid level clouds and cooler temperatures to Trinity county. This may bring some drizzle to the coast, but at this point no real rain is expected. Friday night into Saturday northerly winds are expected to increase. Offshore flow is expected overnight with breezy afternoon winds. Inland areas are expected to warm again on Saturday and with mostly clear skies areas closer to the coast will likely warm up too. The breezy northerly winds typically keep the immediate coast in the low 60s. The warming trend is expected to continue into early next week. At this point the first day expected to see moderate heat risk in the far inland areas is Monday. However, there is some potential an upper low could develop off the coast weaken the wind flow allowing clouds and marine air creep into the coastal counties limiting the heating potential. MKK && .AVIATION...Widespread stratus remains in place across the coastal counties as well as Lake county. CIGS are generally MVFR in this stratus in the valleys. Towards sunrise as the high pressure builds in this is expected to slowly flatten the stratus and lower the CIGS. Some areas may drop into the IFR category. Through the day Wednesday CIGS are expected to lift and clear in the inland areas. This coast is expected to remain cloudy, but CIGS may lift to VFR or near VFR. Northerly winds are expected to increase slightly in the afternoon to around 10 kt. MKK && .MARINE...The winds remain fairly light out of the north this morning, around 5 kt in the north to 10 kt in the south. Later today and this evening winds are expected to increase slightly to around 10 to 15 kt. This will develop some 2 to 4 foot wind driven waves. In addition there is expected to be a couple northwest swells. It looks like one will be around 12 to 14 seconds and one around 8 to 10 seconds. These both look to be around 3 feet. Winds are expected to remain around 10 to 15 kt through Thursday evening. Thursday night into Friday a weak front approaching the area is expected to bring lighter winds north of Cape Mendocino. Only around 5 to 10 kt and these may briefly become west or southwest. Farther south the winds are expected to increase to around 15 to 20 kt. Behind the front on the weekend winds are expected to increase to near gale or gale force as high pressure builds in again. There is expected to be a fairly small northwest swell through much of the period. Friday night and Saturday behind the weak front the swell may increase slightly with periods jumping up to around 15 seconds, but heights remain around 3 or 4 feet. MKK && .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... None. && $$ 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

509 FXUS66 KMTR 061903 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1203 PM PDT Wed May 6 2026 ...New SHORT TERM, LONG TERM... .KEY MESSAGES... Updated at 1201 PM PDT Wed May 6 2026 - Warming and drying trend beginning today through the early part of next week - Temperatures peaking next Monday and Tuesday - Moderate risk for heat-related illnesses for sensitive populations across the inland valleys beginning this weekend && .SHORT TERM... Issued at 1201 PM PDT Wed May 6 2026 (This evening through Thursday) Satellite imagery shows a lingering mid-level cloud deck over Napa County and the eastern fringe of Sonoma County, with scattered cumulus across ridgelines down to the Gabilan Range east of Salinas and clear skies everywhere else. The clouds over Napa County may take a few more hours to clear out, with generally clear skies across the region through the afternoon before stratus returns to the valley regions this evening and overnight. As of the time of writing, there has been no clear signal of a return of the marine layer, but we will continue to monitor the Bodega Bay profiler as it is expected to develop over the next couple of days. The upper level pattern is dominated by a building ridge across the West Coast as the low pressure system that gave us the last few days of gloomy weather has split, with part of the low`s energy moving off into the Plains and the other spinning up a cut- off low centered over the northern half of Baja California. Thus, today will mark the start of a warming and drying trend that -- spoiler alert -- will continue into the upcoming weekend. High temperatures toady will range from the middle 70s to lower 80s across the inland valleys, with highs in the middle 80s possible in the warmest regions of southern Monterey County, the middle 60s to the lower 70s near the Bays, and the middle 50s to lower 60s along the Pacific coast. The building ridge will cause temperatures to warm tomorrow, generally a rise of a few degrees across most of the forecast region, with the most notable exceptions being the southern Salinas Valley, where highs jump into the upper 80s to the lower 90s, and the vicinity of Santa Cruz where highs rise into the upper 70s. Breezy onshore flow is expected to develop across the region in the afternoon and evening hours, with gusts reaching 20 to 30 miles per hour along the coasts, through gaps and the northern Salinas Valley, and across the ridgelines. && .LONG TERM... Issued at 1201 PM PDT Wed May 6 2026 (Thursday night through next Tuesday) Upper level ridging continues to build through the week as temperatures continue to rise across the region. Thursday night into Friday, the strengthening pressure gradient will contribute to breezier and gustier onshore flow during the afternoon and evening hours, especially along the coast, at the ridgelines, and through northwest-southeast oriented gaps and valleys, where wind gusts could reach 25 to 35 mph. After persisting through the weekend, breezy winds will diminish through the early part of next week as the ridge expands over the state, degrading the pressure gradient. Temperatures continue to rise across the 7 day outlook, with the current forecast showing highs peaking next Monday and Tuesday, as the temperatures reach the lower 90s to near 100 across the inland valleys, the lower 80s to lower 90s along the Bays, and the middle 60s to lower 70s along the Pacific coast. Low temperatures will hover in the 50s for the lower elevations, and will rise into the 60s and lower 70s in the higher elevations. Moderate HeatRisk will develop in the inland valleys and warmer locations along the Bayshore (namely eastern Marin County and southeastern San Mateo County beginning this weekend into the early part of next week. This corresponds to a moderate risk of heat-related illnesses, especially for sensitive populations including children, the elderly, pregnant women, people with chronic diseases, and people who work or live outdoors without adequate shelter or hydration. Never leave anyone unattended in a vehicle! It is best to avoid being outdoors during the hottest part of the day, but if you must, make sure to drink plenty of water and take breaks in the shade. Towards the middle and latter parts of the next week, forecast uncertainty begins to increase with an emerging split in the ensemble model runs. Ensemble cluster analysis teases out around a 30-40% chance that a trough will develop and interrupt the warming trend towards the the latter part of next week, with significant differences among the ensemble runs as to what the nature of this trough will be -- shortwave or synoptic, more zonal or meridional flow. This is something that we will watch over the next few days as we interrogate how this event will play out. && .AVIATION... (18Z TAFS) Issued at 1012 AM PDT Wed May 6 2026 Low clouds have been clearing out quickly by mid-morning and expect VFR conditions the remainder of the day and evening. Marine layer and associated low stratus will begin its push inland later this evening with MVFR ceilings expected for all terminals through the overnight hours with clearing beginning by mid-morning Thursday, likely VFR for all terminals by Noon Thursday. Vicinity of SFO...Steady fetch of onshore flow through the TAF period with VFR conditions for the remainder of this afternoon and early evening, and a return of MVFR cigs later this evening. MVFR cigs will persist through the overnight hours with clearing expected to begin by mid-morning Thursday, and VFR expected by Noon Thursday. SFO Bridge Approach...Similar as SFO. Monterey Bay Terminals...VFR conditions this morning through the afternoon accompanied by moderate WNW winds. Low MVFR ceilings from the coastal stratus deck are expected to move onshore this evening impacting MRY first. Overnight around 09Z Thursday, moderate confidence that conditions will transition into IFR as the stratus marine layer becomes more defined. These lower ceilings will begin to lift and mix out by late morning Thursday. && .MARINE... (Today through Monday) Issued at 1012 AM PDT Wed May 6 2026 A building ridge of high pressure over the eastern Pacific will continue gentle to moderate northerly breezes across the coastal waters this afternoon. Expect increasing northerly breezes by Thursday afternoon that will persist through the weekend with building rough seas, resulting in dangerous conditions for small crafts. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 9 PM Thursday to 3 AM PDT Saturday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory from 3 AM Friday to 3 AM PDT Saturday for Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm. Small Craft Advisory from 9 AM Thursday to 3 AM PDT Saturday 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

718 FXUS66 KOTX 061750 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 1050 AM PDT Wed May 6 2026 .KEY MESSAGES... - Isolated thunderstorms in far North Idaho late Wednesday afternoon and evening. - Gusty winds Wednesday afternoon and evening in Central Washington. - Widespread minor HeatRisk Wednesday, Thursday, and again early next week. This level of heat primarily affects those who are sensitive to heat. - Dangerously cold water temperatures pose a high risk for cold water shock and hypothermia for anyone who unexpectedly falls in. Wear a life jacket if recreating on or near the water. && .SYNOPSIS... A prolonged period of above normal temperatures will continue into the middle of May. Conditions will be dry outside small chances for mountain showers and thunderstorms in the North Idaho Panhandle Wednesday. Winds will be gusty Wednesday and Friday, especially in Central Washington. && .DISCUSSION... Wednesday through Tuesday: The message for the next week is to be prepared for above normal temperatures and generally dry conditions. An upper-level ridge will be dominant over the Northwest through the next seven days. Weak shortwaves will ripple over the the top of the ridge at times, each dragging a mostly dry cold front through. Each front will increase onshore flow, pile marine clouds west of the Cascade Crest and result in breezy to locally windy conditions. The two main cold fronts will be Wednesday and Friday. Each of these days will have winds peak in the late afternoon and early evening resulting in elevated fire weather conditions. As for precipitation, there isn`t much to discuss. The main precipitation threat will come with Wednesday`s cold front with a chance for showers and thunderstorms focused over far North Idaho; all other days are expected to be dry at this time. Wednesday Showers and thunderstorms: HREF mean CAPE for North Idaho and areas of Eastern WA vary from 200-450 J/kg. Closer examination of soundings suggest a stable layer will prevent convection from developing over much of Eastern WA and the lower Idaho Panhandle. The target area for a few cells will be extreme NE WA and far North Idaho largely north of a line from Sandpoint to Colville. Percentages for showers or storms in NE WA are 10-15% and increase 15-30% around Bonners Ferry, Porthill, and Moyie Springs. The strength of the showers and outlook for lightning will depend on how quickly a surge of higher dewpoint air can punch northward into this area, originating from the Columbia Gorge . If dewpoints can increase into the mid to upper 40s prior to sunset, then there could be a few cells capable of a 0.25"or more rainfall and few storms that may need to be closely monitored. Any storms that do develop will pose a threat for downpours of rain and small hail, wind gusts of 30-35 mph, and lightning. If you have outdoor plans in North Idaho Wednesday between 4-7PM, keep an eye to the sky. Wednesday and Friday Winds: As mentioned above, there will be two main bouts of gusty winds. For each Wednesday and Friday, the strongest winds will impact the East Slopes and Western Columbia Basin. There is a 20-40% chance for wind gusts 30 mph or stronger Wednesday which then increases to 30-60% for Friday. The peak of the winds both days will be late afternoon and early evening. Locations like Vantage, Waterville, Entiat, and Ephrata will carry the highest probabilities (10-20%) for brief wind gusts of 40 mph. Wind gusts in the eastern Columbia Basin, Palouse, and Spokane Area will be in the 20-30 mph range with locally stronger speeds in the foothills of the Blue Mountains around Pomeroy and Hwy 12. With the mild temperatures in place through the week (70-80s), minor heatrisk will be present which primarily effects those who are extremely sensitive to heat and not acclimated to the warmer temperatures this early in the season. Folks heading to rivers and lakes should be cautious that water temperatures remain cold with elevated risks for hypothermia without proper gear. /sb && .AVIATION... 18Z TAFS: VFR conditions will prevail under mostly clear skies through the forecast period. Mid and high clouds will increase in the afternoon Wednesday with the arrival of a cold front. Isolated convection will impact far north Idaho around Bonners Ferry, ID with a 15% chance to expand as far south as Sandpoint, ID and 10% chance to develop over extreme Northeastern WA around Ione, WA. Lightning, downpours, and gusty winds will be possible with this activity between 22-03z. Winds will become gusty after 20z over the Palouse, Spokane Area, Columbia Basin, and East Slopes of the Cascades. Wind gusts will remain below 30 mph for Spokane, Pullman, and Lewiston and 30-35 mph around Waterville, Wenatchee, Ephrata, Moses Lake, and Chelan airports between 23-05z. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Moderate to high confidence for convection to remain in far North Idaho, lower confidence for cells to develop in extreme NE WA. Otherwise, VFR conditions prevail. ----------------------- 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 80 51 77 50 74 47 / 0 0 0 0 0 0 Coeur d`Alene 77 50 73 49 70 46 / 0 0 0 0 0 0 Pullman 75 49 70 45 69 44 / 0 0 0 0 0 0 Lewiston 81 53 76 48 76 48 / 0 0 0 0 0 0 Colville 82 47 82 48 76 44 / 0 0 0 0 0 0 Sandpoint 75 47 73 47 69 44 / 0 10 0 0 0 0 Kellogg 76 47 71 46 70 44 / 0 0 0 0 0 0 Moses Lake 86 50 81 50 79 46 / 0 0 0 0 0 0 Wenatchee 85 53 82 53 76 49 / 0 0 0 0 0 0 Omak 88 51 85 53 81 47 / 0 0 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

670 FXUS66 KPDT 061750 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1049 AM PDT Wed May 6 2026 .Updated Aviation Discussion. .KEY MESSAGES... - Above-normal temperatures and mostly dry conditions through this week into next week - Wind Advisory in effect this afternoon and evening - Periods of low relative humidity (10-20 percent) coupled with breezy to windy westerly winds Thursday and Friday through the Cascade gaps and across the Columbia Basin and Blue Mountain foothills && .DISCUSSION... Satellite imagery shows mostly clear skies early this morning under an upper-level ridge of high pressure. Water vapor imagery reveals the ridge of high pressure extends from offshore northeast through the Canadian Rockies. Later today, a weak shortwave will ride over the top of the ridge across British Columbia and the northern Rockies. Coupled with a cross-Cascade thermal gradient (warmer on the east side, cooler on the west side) due to an established marine layer (evident in Nighttime Microphysics RGB imagery as well as 00Z observed soundings at SLE and UIL) on the west side of the Cascades, this will induce a decently strong cross-Cascade pressure gradient (8-12 mb between PDX and GEG per latest guidance) and result in breezy to locally windy westerly winds through the Cascade gaps and across the Columbia Basin and Blue Mountain foothills. NBM probabilities of exceedance show a medium-high (50-95 percent) chance of reaching advisory-level wind gusts for climatologically wind-prone locations within the aforementioned region, with significantly lower chances elsewhere. Confidence was high enough (70-90 percent) that periods of advisory-level sustained winds and/or wind gusts will be met today, so went ahead and issued a Wind Advisory for multiple zones for this afternoon and evening. Another round of breezy conditions is forecast Thursday as the shortwave exits to the east over the Rockies and upper-level ridging rebuilds over the Pacific Northwest. That said, a drier air mass is forecast to be present Thursday in the wake of the shortwave, and locally low relative humidity (10-20 percent) is forecast. Fuels are not yet ready for Red Flag Warnings, so no fire weather headlines have been issued. By Friday, ensemble mean 500-hPa heights and vorticity show another shortwave from the Pacific entering the Pacific Northwest late morning through afternoon. Confidence is very high (90 percent) in another round of widespread breezy to windy westerly winds through the Cascade gaps and across the Columbia Basin and Blue Mountain foothills. NBM probabilities of reaching or exceeding advisory-level wind gusts are medium- high (40-80 percent) for wind-prone areas within the region outlined above. Similar to Thursday, the dry air mass (ensemble- advertised PWATs of 0.25-0.50") coupled with sufficient downward mixing during the daytime should facilitate some low relative humidity (10-20 percent) prior to the arrival of a more humid air mass by later Friday. Taking a glance at the weekend into next week, ensemble NWP guidance shows little to no signal for organized precipitation until Tuesday as upper-level ridging remains the favored scenario for the bulk of the West. Periods of breezy westerly winds are favored as the ridge axis shifts inland Sunday through early next week and ensemble guidance shows potential for a couple additional shortwaves to ride over the top of the ridge. To briefly touch on forecast temperatures, for most of our population centers high temperatures in the upper 70s to lower 90s coupled with lows in the upper 40s to lower 60s will present predominantly Minor (level 1 of 4) HeatRisk. This level of heat primarily affects those who are extremely sensitive to heat and without cooling/hydration. && .AVIATION /12Z TAFS THROUGH 12Z THURSDAY/... VFR conditions currently across all sites, which will stay the course through the period. Breezy winds of 20-30kts for all terminals this afternoon, dissipating later this evening. The only exception will be KDLS, which will continue to experience breezy 20-30kt winds into the early morning hours on Thursday. BKN-SCT 25kft ceilings this evening before clearing out overnight tonight. 75 && .FIRE WEATHER... Breezy to windy westerly winds are forecast today, and Wind Advisories are in effect for multiple zones. Locally low (10-20 percent) relative humidity is forecast to accompany breezy (Thursday) to windy (Friday) westerly winds across the Columbia Basin and surrounding lowlands. Poor to moderate overnight relative humidity recovery is anticipated Thursday night for ridgetop, mid-slope, and some basin locations. Above-normal temperatures are forecast this week and into next week, and significant precipitation is unlikely (90 percent confidence). && .HYDROLOGY... The Naches River is forecast to remain near (Cliffdell) or above (Naches) action stage through the remainder of the week and into next week. Significant precipitation is unlikely (90 percent confidence) for the next week. && .Preliminary Point Temps/PoPs... PDT 82 52 76 50 / 0 0 0 0 ALW 82 54 76 53 / 0 0 0 0 PSC 89 56 82 55 / 0 0 0 0 YKM 88 50 82 50 / 0 0 0 0 HRI 85 54 79 53 / 0 0 0 0 ELN 80 47 77 47 / 0 0 0 0 RDM 83 43 80 41 / 0 0 0 0 LGD 81 47 74 43 / 0 0 0 0 GCD 81 45 77 43 / 0 0 0 0 DLS 83 53 79 50 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...Wind Advisory from 1 PM this afternoon to 1 AM PDT Thursday for WAZ024-026-521. OR...Wind Advisory from 1 PM this afternoon to 1 AM PDT Thursday for ORZ041-044-507-508-510. && $$ DISCUSSION...86 AVIATION...75 FIRE WEATHER...86 HYDROLOGY...86

041 FXUS65 KREV 060717 AFDREV Area Forecast Discussion National Weather Service Reno NV 1217 AM PDT Wed May 6 2026 .KEY MESSAGES... * Warmer and drier weather prevails Wednesday through at least early next week. * Breezy afternoon winds are likely with a weak system to our north on Friday. * Near record heat is becoming increasingly likely late this weekend into early next week. && .DISCUSSION... A few lingering showers remain this morning across areas south of Highway-50 this morning. These showers should end by sunrise as the upper level trough leaves the area. In its wake, northerly flow brings cool and dry air. However, this afternoon will be slightly warmer than yesterday due to mostly clear skies. A high amplitude upper level ridge from the Eastern Pacific extending north towards the Alaska Peninsula takes over through Friday morning resulting in a warming trend. Afternoon highs will be around 5 to 10 degrees above average for this time of the year. Also expect typical afternoon westerly winds each day. On Friday afternoon, a weak upper level shortwave trough pushes through the PacNW. This system will lead to an increase of our typical afternoon westerly winds with gusts most likely in the 25 to 35 mph range with a 10-60% chance of gusts exceeding 40 mph over wind prone areas. The main areas of concern will be north of I-80, including mountain ridges and eastern slopes of mountains. Temps will stop their gradual increase on Friday with this system. The ridge quickly returns on Friday evening and continues a slow eastward trajectory towards the Desert Southwest. This will allow for warmer and drier air to move in leading to higher afternoon temperatures this weekend and early next week. Western Nevada and NE California valleys have high (60-90%) chance of reaching their first 90 degree days of the season (Mon/Tue). The NV Basin and Range lowest valleys may reach the mid-90s by Monday. Moderate HeatRisk is likely over western NV lowest valleys on both days as temperatures have 50-60% chance of breaking the high temp records. By next Wednesday, the backside of the ridge starts to pull subtropical moisture from the Gulf of California towards W NV bringing back clouds and rain chances into the forecast. The cloud cover will help drop temperatures back into the 80s, but we remain 10-15 degrees above average. -HC && .AVIATION... VFR conditions prevail through Thursday morning. The exception will be a few lingering showers near KMMH/KHTH through 15Z this morning. Plus, FG leading to IFR/LIFR conditions at KTRK between 08-15Z each morning. Winds will be generally light and VRB overnight early morning, then become from the north between 18-03Z with speeds to 5-12 kts and gusts up to 20 kts. -HC && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

184 FXUS66 KSTO 052108 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 208 PM PDT Tue May 5 2026 For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing. .KEY MESSAGES... - Lingering mountain shower and thunderstorm chances into this evening, with drying conditions midweek. - Hot and dry conditions are expected to develop end of the week with widespread Minor HeatRisk Thursday and Friday. - Widespread Moderate HeatRisk Saturday into Tuesday, with triple digit and daily record highs possible. && .DISCUSSION... ...Today... Latest RADAR shows just a few light returns over the Sierra south of Hwy 108. Convective Allowing Models(CAMs) suggest some showers showers and possibly a couple isolated thunderstorms around the I-80 corridor from around 3 to 6 pm, potentially a few more before midnight. Precipitation will be generally light but there may be a few pockets of moderate rainfall at times. Snow levels are expected to remain above 9000 feet, so all but the high peaks should see precipitation in the form of rain. Showers should be ending by around midnight. Highs this afternoon are 5 to 10 degrees below normal, in the upper 60s to low 70s. ...Wednesday through next Tuesday... Wednesday is expected to be dry with near normal high temperatures as the cool low pressure system exits and eastern Pacific high pressure ridging shifts into the region. This is the beginning of an extended period of dry and warm weather. Conditions continue to warm as we move into weekend into early next week. Minor HeatRisk is expected across the Valley Wednesday, becoming more widespread and extending into the foothills and mountains by the end of the week. Some areas of Moderate HeatRisk are expected in the Valley by Saturday, expanding to include the foothills by Sunday. The NBM currently indicates a 60-90% chance of high temperatures greater than 90 degrees in the Valley Saturday, 75-95% on Sunday. Minimum RH values trend lower through the week as well, dropping into the 20s and teens by the weekend. This will coincide with a period of breezy north winds that develops on Saturday which could lead to elevated fire weather conditions in the central Sacramento Valley. Forecast gusts are between 15 and 25 mph. Looking into early next week, models (including the NBM 5.0) continue to show at the potential for triple digit temperatures as ridging amplifies over the region. Some daily high temperature records are in jeopardy. The NBM continues to indicate a 50 to 70% chance of 100 or greater in the northern San Joaquin Valley and portions of the central Sacramento Valley next Monday and Tuesday. There may be some Delta breeze to give influenced areas a slight break for overnight lows. && .AVIATION... Scattered low clouds and ceilings will lead to MVFR conditions this morning in the Valley through roughly 20Z today. VFR conditions through 09Z Wednesday, before scattered low clouds redevelop in the Valley leading to MVFR conditions until around 21Z Wednesday. Low chance (10-15%) of isolated mountain showers/thunderstorms developing this afternoon along the Sierra crest. Otherwise, surface winds will generally be 12 kts or less. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

426 FXUS65 KMSO 061905 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 105 PM MDT Wed May 6 2026 .DISCUSSION... KEY MESSAGES: - Showers and possible thunderstorms tonight into Thursday for northwest Montana - Warming for the remainder of the work week - A weak disturbance on Saturday causing slightly cooler temperatures and potential of light showers near Glacier NP High pressure to our west will maintain a generally settled weather pattern for most of today. However, a weather disturbance moving in from Canada will bring increased cloud cover and a higher chance of precipitation this evening and overnight. Showers and thunderstorms are expected to develop around 5pm near the Idaho Panhandle border, potentially reaching as far south as Missoula. By 9:00 PM, this activity will shift primarily toward northwest Montana, with the greatest chances focused near the Canadian border. A few of these evening storms could become strong, carrying the potential for gusty winds, lightning, and small hail. As the high pressure system moves closer to the Northern Rockies on Thursday, showers will linger along the Continental Divide, including the Glacier National Park area, while the rest of the region will experience clearing skies. Another weak weather system will arrive late Friday night into Saturday morning. While forecast confidence is high for widespread cloud cover with this passing system, a very dry air mass in place will significantly limit the chance for measurable rainfall. Regardless of whether precipitation reaches the ground, Saturday will feature cooler, near-normal daytime high temperatures. By Sunday, confidence is exceptionally high that strong high pressure will build directly over the region. This will usher in a period of completely dry conditions and a noticeable warming trend across Western Montana and North Central Idaho. Expect this warm and quiet weather pattern to persist through early next week. && .AVIATION...VFR conditions will generally prevail across the airspace through the afternoon under the influence of high pressure to the west. However, aviation impacts are expected to increase after 06/2300Z as a Canadian disturbance initiates scattered showers and thunderstorms along the Idaho border, potentially impacting the KMSO terminal area. By 07/0300Z, the convective focus will shift northward into northwest Montana, bringing the highest probabilities for TSRA to the KGPI vicinity near the Canadian border. The primary aviation hazards associated with the stronger thunderstorm cores this evening will include erratic gusty outflow winds to 30 kts, lightning, small hail, and temporary MVFR conditions due to reduced visibility and lowering ceilings in heavier precipitation. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

006 FXUS65 KBOI 061739 AFDBOI Area Forecast Discussion National Weather Service Boise ID 1139 AM MDT Wed May 6 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Warm and dry conditions through Friday with temperatures 5-10 degrees above normal. - Dry cold front on Friday afternoon brings breezy conditions. - Temperatures warming to 15-20 degrees above normal next Monday and Tuesday. && .SHORT TERM /Through Friday Night/... Issued 415 AM MDT WED MAY 6 2026 A backdoor cold front has moved across the Snake Basin from eastern ID and has brought cooler temperatures, breezy conditions and drier air. The easterly winds will be shortlived as the northwest winds aloft mix down to the surface by this afternoon. Temperatures will be steady today with a few degrees of warming on Thursday and Friday as a ridge strengthens over the Pacific NW. A dry cold front will move through the area on Friday afternoon, bringing breezy conditions. && .LONG TERM /Saturday through Wednesday/... Issued 415 AM MDT WED MAY 6 2026 Slightly cooler temperatures on Saturday behind the cold front. Then the upper level ridge redevelops over the western US, with the warmest temperatures of the season by next Monday and Tuesday. Temperatures rise 15 to 20 degrees above normal with highs of 85 to 90 degrees in the Snake Basin. && .AVIATION /18Z Wednesday through Thursday/... Issued 1134 AM MDT WED MAY 6 2026 VFR. Surface winds: W-NW 5-15 kt with gusts to 20 kt, becoming W-NW 5-10 kt overnight. Gusts to 30 kt expected after Thu/16z at KTWF/KJER. Winds aloft at 10kft MSL: W-NW 15-30 kt KBOI...VFR. Surface winds: NW 5-12 kt. && .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.....JR SHORT TERM...KA LONG TERM....KA

282 FXUS65 KLKN 060711 AFDLKN Area Forecast Discussion National Weather Service Elko NV 1211 AM PDT Wed May 6 2026 .KEY MESSAGES... * Warming trend Wednesday through the rest of the week * High pressure builds into the Great Basin signaling a prolonged stretch of dry weather && .UPDATE... Issued at 1205 AM PDT Wed May 6 2026 As precipitation and storm activity winds down through the night upper level ridging and high pressure are expected to steer the weather pattern for the foreseeable future. The warming trend is on track for the rest of the week with dry weather in store for the region. No major changes to the forecast are needed at this time. && .DISCUSSION... (Today through next Wednesday) WEATHER PATTERN OVERVIEW: The upper trough that passed over the area will continue moving to the south and closing off over Baja California Wednesday evening. Rising heights due to an upper level high pressure system will be in store for northern and central Nevada. Skies are expected to be mostly sunny with highs in the 60s and 70s. Winds will be out of the north with some gusts to 25 mph. Continued dry conditions expected during the overnight with lows in the 30s and 40s. Thursday through the weekend, models are showing upper ridging maintaining a grip on the weather across the area through the period. This will mean temperatures will climb to above normal levels through about Friday with readings in the 70s and 80s. Overnight lows will be in the 30s and 40s. Winds will be breezy each afternoon with gusts to 25 mph. By Sunday, high temperatures will climb even more with readings in the 80s for the most part. A few near record temperatures may be possible Sunday. FORECAST CONFIDENCE & DEVIATIONS: Confidence in the warmup through the period continues at a moderate level. No changes were made to the NBM forecast. && .AVIATION... Look for VFR conditions through Wednesday afternoon with some breezes to 20KT. && .FIRE WEATHER... Skies will clear on Wednesday with gradually warming temperatures through the week. No fire weather concerns are anticipated in the short term. && .LKN Watches/Warnings/Advisories... None. && $$ UPDATE...99 DISCUSSION...86 AVIATION...86 FIRE WEATHER...86