648 FXUS66 KSEW 071618 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 918 AM PDT Thu May 7 2026 .SYNOPSIS... An upper level ridge will remain situated over the region today with onshore flow continuing in the low levels. A weak frontal system will move over the area Friday into Saturday, bringing a slight chance of showers to the Pacific coast. An upper level ridge will rebuild over the area this weekend and will influence the area into early next week, leading to a gradual warm up across western Washington. Some light showers will be possible around midweek as some weak systems approach the region. && .SHORT TERM /TODAY THROUGH SATURDAY/... The latest forecast remains on track this morning with no updates. An upper level ridge will remain situated over the region today while onshore flow continues in the low levels. Onshore flow will help keep stratus around throughout the morning hours, but guidance does indicate some scattering is expected by this afternoon. As a result, expect afternoon highs to be a bit warmer than yesterday, with areas across the interior topping out in the mid 60s to near 70, while areas along the coast look to remain in the 50s to low 60s. The status of the stratus scattering will bear watching though, as it will have a direct impact on the day`s temperatures. A weak, dissipating frontal system will then approach the area on Friday as the ridge axis pushes inland and makes way for a shortwave trough. While the majority of the area looks to remain dry, this system may bring some light shower activity to the coast by Friday evening. The more notable impact from this system will be the uptick in onshore flow and the increased cloudiness across the area. Afternoon highs as a result will be in the 50s to mid 60s. An upper level ridge will then rebuild over the region on Saturday, allowing for the gradual warm up to commence across western Washington. Highs on Saturday will warm into the low to mid 70s across the interior and into the mid 60s along the coast. Areas of Minor HeatRisk will expand across western Washington, becoming more widespread. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... Ensemble guidance remains in good agreement that the upper level ridge will remain situated over the Western US into early next week, but will gradually push inland. As the ridge moves eastward, it may open the door to some additional rounds of light precipitation early in the week as weak systems brush by to the north. Overall, however, expect conditions to remain largely dry and warm across the area, with temperatures expected to climb back up into the mid to upper 70s by Tuesday. Some spots may even get close to 80 across the Southwest Interior. Ensemble solutions start to diverge again closer to midweek, as the ridge pushes further inland towards the Great Plains and an upper level trough looks to swing into British Columbia. Temperatures look to remain warm, but the upper trough may start to reintroduce some light precipitation chances to portions of the area. 14 && .AVIATION... Northwesterly flow aloft as upper level ridging remains offshore western Washington. A mixed bag of ceilings early morning between MVFR/VFR as onshore flow maintains stratus deck over the area. We`ll continue to see some ceilings lower locally to IFR with MVFR continuing throughout this morning for most areas. Flow will start to weaken this afternoon which will help low clouds lift and scatter (20z-23z) and provide a gradual return to VFR for all terminals. KSEA...A mix between MVFR to VFR this morning as low clouds remain around the terminal. Conditions will improve after 20z with a return to VFR expected by late afternoon. Winds remain S/SW up to 5 to 10 knots. && .MARINE... Surface high pressure remains offshore allowing for low level onshore flow to continue. Winds will continue to weaken this morning through the Strait of Juan De Fuca with onshore flow weakening as well. A weak front will cross over the waters on Friday, with generally benign marine conditions. Onshore flow increases over the weekend allowing for more stronger pushes down the Strait. && .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...None. && $$

516 FXUS66 KPQR 071753 AAA AFDPQR Area Forecast Discussion...UPDATED National Weather Service Portland OR 1053 AM PDT Thu May 7 2026 ...Updated aviation discussion... && .SYNOPSIS...Ridging aloft will maintain largely warm and dry conditions through the next week. Daytime cloud cover will introduce uncertainty into the high temperature forecast through the coming few days, but the likelihood of warmer temperatures increases next week. && .DISCUSSION...Now through Wednesday...Broad upper-level ridging is favored to remain largely in place over the Pacific Northwest through the next week, driving generally persistent weather conditions across the region. The nightly encroachment of marine clouds all the way inland to the Cascades will continue to yield some uncertainty in daytime high temperatures. Differences in heating due to both spatially and temporally-varying cloud cover may produce quite different temperatures from location to location; observed highs on Wednesday differed by as much as ten degrees at sites separated by only a few miles. There is marginally higher confidence in an earlier clearing for most inland areas as the upper ridge axis shifts overhead in the coming days, but any areas of persistent cloud cover will again yield cooler afternoon temperatures. Highs will most likely remain seasonably warm into this weekend, in the upper 50s to upper 60s along the coast and in high terrain, and in the upper 60s to low 80s within inland valleys. The warmest spots are expected to be the Hood River Valley and central Columbia Gorge where lower nocturnal cloud cover will allow for increased daytime heating. These same areas will also be the breeziest as west winds of 15-20 mph gust to 25-35 mph each afternoon. Friday should be the coolest day of the week as a shortwave trough passes over top of the ridge, but chances for any rain Friday into Friday night remain 5% or less across the area. As upper ridging rebuilds through early next week, chances for warmer temperatures will tend to increase. The forecast for Mother`s Day continues to look pleasant: high temperatures in the 70s within inland valleys and 60s elsewhere beneath partly cloudy skies. Through the middle of the workweek, uncertainty in the placement and amplitude of ridging generates uncertainty in the temperature forecast. A more western ridge axis will generally favor the warmest temperatures locally, while a more inland location represents a cooler scenario. -36 && .AVIATION...Satellite imagery and terminal observations as of late Thursday morning depicts high-end MVFR/low-end VFR CIGs as stratus gradually burns off across northwest Oregon and southwest Washington. By 19-21z Thu, daytime heating will have completely mixed out the atmosphere, leading to predominately VFR conditions and mostly clear skies. Tonight, onshore flow will support re- development of marine stratus with 60-80% chance for MVFR CIGs or lower along the coast at any given hour between 06-18z Fri. The highest chances will be around KONP and lower as you go toward the north Oregon coast. Marine stratus may also filter into the southern Willamette Valley, resulting in a 25-40% chance for MVFR CIGs at KEUG after 09-12z Fri. Winds generally light and north-northwesterly today, turning more south-southwesterly overnight. KPDX AND APPROACHES...VFR conditions with high clouds through the TAF period. Northwesterly winds 4-6 kt, becoming variable under 5 kt tonight into early Friday morning. 10-20% chance for MVFR CIGs after 12z Fri. -10 && .MARINE...A broad onshore flow regime favors continued marine overcast which thickens and lowers overnight before lifting and backing offshore each day through the remainder of the week. Northerly flow will weaken on Thursday and turn southerly on Friday as a weak front moves over the coastal waters and decays. Southerly gusts may briefly approach 20 kt on Friday afternoon before weakening again overnight. Chances for rain on Friday remain 5% or less. Seas of 5-8 ft today will ease to 3-5 ft by Friday night. High pressure will restrengthen offshore this weekend into next week, supporting a reintensification of northerly winds. Chances for widespread gusts of 20-30 kt gradually increase each day from Saturday through Tuesday. Seas return to 5-8 ft from Saturday morning through the middle of next week. -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

569 FXUS66 KMFR 071734 AFDMFR Area Forecast Discussion National Weather Service Medford OR 1034 AM PDT Thu May 7 2026 ...Updated AVIATION discussion for 18Z TAFs... .AVIATION...07/18Z TAFs...MVFR ceilings remain over the oregon coast and into the Umpqua Valley under a lingering marine layer. Satellite imagery is starting to show clearing, so VFR levels are expected in these areas later this morning or early in the afternoon. Marine stratus returns later this evening. Patchy fog is possible into early Friday morning, but sustained fog does not currently look likely. Inland areas will remain at VFR levels under stable atmospheric conditions. -TAD && .PREV DISCUSSION... /Issued 306 AM PDT Thu May 7 2026/ DISCUSSION (Today through Wednesday)... Key Points: * Limited impacts continue the next several days - Most notable will be the well above normal temperatures - Some areas 10-15+ degree above normal * Drying trend continues for the extended forecast - No signal for precipitation in the forecast at this time - See details below about fuels Further Details: A ridge of high pressure continues to build in over the region 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 tomorrow. That caveat will be a weak shortwave entering the PacNW; however, this shortwave is very progressive eastward, and will likely only result in cooler temperatures for our area. Tomorrow is the overall "coolest" day in the forecast, but we are still forecasting above normal temperatures. We continue to see a signal in the extended forecast for this ridge to essentially remain in place through middle parts of May. This is confirmed via cluster analysis leading to high confidence in a more likely ridge pattern aloft through Day 9. This will likely result in continued above normal temperatures and dry conditions which may result in an accelerated period of drying for fuels. Forecast energy release component values for fuels are forecast to rise near their maximum values for this time of year. Or, another way to look at this, these values are forecast to go above 1 standard deviation from "normal" values for this time of year. Through May, the Climate Prediction Center (CPC) continues to indicate a strong signal for above normal/well above normal temperatures, and a 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. This was indicated in the CPC April 9th ENSO diagnostic discussion. -Guerrero AVIATION (06Z TAFs)... Marine stratus is bringing a mix of IFR/MVFR conditions to the coast and coastal valleys into the lower Umpqua Valley. The marine layer will gradually extend back into the central portion of the Umpqua Valley, including Roseburg, overnight. But, the stratus is expected to be faster to improve on Thursday morning, with VFR by 18Z. Elsewhere, VFR conditions will continue through the TAF period with typically breezy afternoon/evening winds. MARINE...Updated 200 AM PDT Thursday, May 7, 2026...Sub-advisory conditions are expected through Saturday. There will be a period of near advisory level winds this morning just south of Cape Blanco between 5 and 30 nm offshore from Gold Beach. Otherwise, light to moderate wind speeds prevail through Friday. West- northwest swell dominated seas at or below 6 feet will persist through early Saturday. A thermal trough develops over the weekend, bringing increasing north winds and steep to very steep seas through early next week. && .MFR WATCHES/WARNINGS/ADVISORIES... OR...None. CA...None. PACIFIC COASTAL WATERS...None. && $$

405 FXUS66 KEKA 070740 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1240 AM PDT Thu May 7 2026 .SYNOPSIS...Warm temperatures persist through early next week for the interior. Overcast conditions at the coast are stubborn, keeping temperatures near normal. Interior temperatures could break 90F for interior valleys Monday and Tuesday. && KEY MESSAGES: Above normal temperatures for the interior through early next week. Minor to moderate heat risk is possible on Monday and Tuesday in Mendocino, Lake and Trinity counties. Coastal overcast conditions to continue through the end of the week. .DISCUSSION...SHORT TERM...A broad H5 ridge of high pressure is beginning to dominate over the Pacific Northwest through the end of the week. While this high pressure is not overly anomalous, 8-12dam above normal, it will lead to a warming trend through early next week. Most of this warming will begin this weekend for the interior. Clear skies and continuously subsiding air will cause increasing daytime temperatures, especially Saturday through Tuesday. This heating will force gusty, up-valley winds each afternoon through Tuesday. Nighttime winds will be calmer and have downslope or downvalley flow as cool air drains into lower elevations. This wind pattern will force cooler air to settle in the valleys while ridgetops remain warm leading to thermal belts development. Nighttime temperature differences between ridgetops and valleys could be as strong as a 15F difference by next week. While clear skies dominate interior areas, coastal communities will remain under a widespread layer of overcast conditions through the end of the week. High pressure will compress the marine layer leading to stubborn marine stratus. This stratus decreases the impact from radiational daytime heating and nighttime cooling keeping temperatures mild. HREF data shows probabilities of low- cloud coverage close to ~90% overnight for coastal areas. Daytime probabilities decrease to ~40%, especially for coastal areas not around Humboldt Bay. This could lead to periodic clearing for those areas in the afternoon. LONG TERM...Both GFS and ECMWF ensemble data shows relatively dry conditions through the middle of next week. The upper level ridge is forecasted to breakdown on Wednesday as a possible frontal system impacts the area. CPC 6-10day outlooks compared to 8-14day outlooks show slightly cooler temperatures and a higher chance of precipitation. So while it might be warm this weekend and early next week, this warm spell is not forecasted to last long. && .AVIATION...Stratus is in place along the coast and 10 to 20 miles inland. This is expected to expand inland and lower some more towards morning. Generally these are expected to be IFR to MVFR, although there may be a few pockets of LIFR. Thursday early afternoon there may be a few breaks in the stratus at KACV and KCEC, but the both the REFS and the HREF show only an hour or two of possible VFR conditions. So kept MVFR conditions in place. The probability of clearing increases significantly Friday afternoon. MKK && .MARINE...Gentle to moderate northerly breezes continue through the day Thursday across the waters. The waves remain a combination of an 8 and 13 second swells. These are around 3 and 5 feet respectively. These are expected to continue through Thursday, although the periods are expected to get closer. The short period wind driven waves are also expected to start to increase. So have combined the two mid period swells so the short period waves will be visible in the CWF. Thursday night and Friday a weak frontal boundary approaching the area will diminish the winds north of Cape Mendocino. Farther south northerly winds starts to increase by Friday afternoon. The HREF is showing an 85 percent chance of a fairly large area south of Cape Mendocino exceeding 21 kt at 5pm on Friday. Saturday these stronger winds are expected to expand farther north with 15 to 20 kt across much of the area north of Cape Mendocino. This is expected to build the short period wind driven waves to around 4 to 7 feet. Stronger winds are expected on Sunday with near gale to gale force gusts possible by Sunday afternoon. Breezy northerly winds are expected to continue into early next week. MKK && .PREV DISCUSSION... /issued 308 PM 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 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 much of the interior. Stratus has retreated to the usual coastal areas of Humboldt, Del Norte and Mendocino counties and will return with less coverage overnight into Thursday morning than previous past few days. Though HREF does have a less vigorous low level cloud cover Thursday afternoon, stratus is expected to straddle the coastline and will linger around Humboldt Bay and the coastline up to the Oregon border. 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/EYS AVIATION...The marine layer remains deep and embedded along the coast and farther inland. The MVFR ceilings from this layer will once again lower with overnight cooling, with high confidence for IFR levels. With building high pressure, and additional compressional effects, LIFR levels are possible. Guidance is trending with higher probabilities for this scenario. Probabilities for LIFR are at this time 20-30%, but MOS guidance is latching on to lower ceilings. MARINE...Northerly winds increase some today, to around 15-17 kts, mainly in the southern waters around the cape. Similar conditions will continue Thursday, with short period seas of 3 to 5 feet and some small mid period swells. 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/JJW && .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

183 FXUS66 KMTR 071929 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1229 PM PDT Thu May 7 2026 ...New SHORT TERM, LONG TERM... .KEY MESSAGES... Updated at 1226 PM PDT Thu May 7 2026 - Warming and drying trend will continue through the early part of next week - Temperatures are forecast to peak on Monday - Moderate risk for heat-related illnesses for sensitive populations across the interior early next week && .SHORT TERM... Issued at 1226 PM PDT Thu May 7 2026 (This evening through Friday) Low clouds are retreating to the coast as of early this afternoon with sunny conditions returning to inland areas. Thus, maximum temperatures this afternoon will warm into the low to upper 70s across much of the interior Bay Area, low to upper 80s across the interior Central Coast, and in the upper 50s to mid 60s in the northwest facing coastal locations thanks to the depth of the marine layer. Stratus will once again return tonight and spread inland into the interior valleys by Friday morning before retreating to the coast by mid-to-late morning and early afternoon. Also, there is the low end potential for coastal drizzle or mist tonight into Friday morning. However, widespread rainfall highly unlikely. Friday, for most locations, will be warmer by a few degrees compared to today. Yet only expecting Minor HeatRisk across much of the interior. && .LONG TERM... Issued at 1226 PM PDT Thu May 7 2026 (Friday night through next Wednesday) The warming and drying trend will continue into the weekend and peak on Monday of the upcoming workweek as high pressure over the eastern Pacific builds westward. This is when more widespread Moderate HeatRisk is expected across the interior. The relatively cool overnight low temperatures will likely prevent us from reaching higher categories of HeatRisk. However, in the hills and higher elevations across the region, temperatures will remain warm during the overnight period with 60s and a few 70s Monday night into Tuesday morning. The marine layer and associated impacts will begin to compress through the weekend, but not completely go away. With this and onshore flow prevailing, conditions along the northwest facing coastal locations will remain cooler compared to inland locations. On Monday, afternoon temperatures are forecast to reach the low to upper 90s across the interior with the greatest potential to reach or exceed 100 degrees F being around Pinnacles National Park (50%-65%) and the southern Salinas Valley (20%-40%). Temperatures are forecast to cool slightly by Tuesday, however will still remain some 5-15 degrees above seasonal averages. The cooling trend is currently forecast to continue into the middle of next week as a more zonal flow returns as the ridge becomes centered over the Desert Southwest. However, the Climate Prediction Center maintains likely (roughly 60%) probability for above normal temperatures to persist through days 6-10. && .AVIATION... (18Z TAFS) Issued at 1004 AM PDT Thu May 7 2026 IFR/MVFR cigs have persisted into mid-morning with better clearing trends apparent for the South Bay and Monterey terminal at TAF issuance (1720Z). North Bay and Bay Area terminals will likely have to wait until 19z-20z for low stratus to clear out, with VFR expected for the remainder of the day and early evening. A robust marine layer will produce a return of low stratus tonight through Friday morning with similar clearing times as today. Vicinity of SFO...Low stratus is expected to clear out by early afternoon with VFR expected for the remainder of the day and early evening. Expect similar timing for MVFR/IFR cigs returning tonight through much of Friday morning with persistent onshore flow, which will be breezy at times late this afternoon and evening, along with a healthy marine layer. SFO Bridge Approach...Similar as SFO. Monterey Bay Terminals...Salinas Valley drainage is almost complete at KSNS with VFR expected for the remainder of the day and early evening. KMRY may hold on to IFR cigs into early afternoon, however recent satellite trends show potential for clearing out earlier. Expect similar timing of a return of low stratus cigs this evening through Friday morning, and for clearing times as well. && .MARINE... (Today through Tuesday) Issued at 914 AM PDT Thu May 7 2026 Northwest winds will continue to increase through the day becoming strong tonight and continue strong through the weekend along with steadily building seas that will also persist through the weekend, and into the beginning of next week for our outer waters. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 9 PM this evening to 9 AM PDT Sunday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory from 3 AM Friday to 9 AM PDT Sunday 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 until 9 AM PDT Sunday for Pt Pinos to Pt Piedras Blancas 0-10 nm. && $$ SHORT TERM...RGass LONG TERM....RGass 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

639 FXUS66 KOTX 071739 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 1039 AM PDT Thu May 7 2026 .KEY MESSAGES... - Breezy to locally gusty winds Friday afternoon and evening. - Widespread minor HeatRisk into next week. This level of heat primarily affects those who are sensitive to heat. - 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. Winds will be gusty Friday and again Sunday, especially in Central Washington. && .DISCUSSION... Thursday-Sunday: A repetitive, yet fluctuating weather pattern is on tap for the Inland NW through the weekend with every 24 hours featuring either ridge of high pressure or brief ridge flattening and passage of an shortwave trough and associated cool front. One trough moved through today (Wednesday) so a ridge will follow for Thursday. Next trough will be Friday then another ridge rebounds on Saturday on before the next trough ripples through Sunday. Under the ridge, stable weather conditions will result in clear to partly cloudy skies and mild temperatures. During the brief breakdown of the ridge, the main weather impacts will be breezy to locally windy conditions. Temperatures cool some behind each front but still remain on the mild side of 30-year averages. Precipitation chances will remain low with each trough yielding a 10-15% chance for showers over far North Idaho and Northeastern WA and largely drizzle on the Cascade Crest. Winds for Friday look similar to Wednesday. Pressure gradients across the forecast area on Wednesday were near 12 mb from PDX- GPI (Portland to Kalispell) and 11 mb from SEA-EAT (Seattle to Wenatchee). This is why the winds were locally stronger for the East Slopes and Western Basin vs the remainder of the region. Gusts at Wenatchee, Moses Lake, Ephrata, and Waterville were between 35-40 mph. Expect similar speeds for Friday afternoon and evening. Gusts on Wednesday for the Palouse, West Plains, and Eastern Basin were 20-30 mph. I anticipate similar speeds with even a slight increase due to the next trough being a bit deeper. Monday-Thursday: There is high confidence for a ridge of high pressure to strengthen on Monday. 85% of the ensembles suggest this ridge will be stronger and persist through Thursday. The 15% of the members that differ are mainly European members and bring another trough to the Pac NW Coastline. We do start to see a transition by late in the week toward more ensemble members (~60% of the members) shifting the ridge inland and opening the door to south to southwest flow. This offers "some" hope for increasing precipitation chances over the Inland though precise details are far from certain this far out. Overall weather impacts through the week will be focused on the windier days which will bring elevated fire weather conditions and potential for choppy lakes. Water temperatures remain cold and those recreating in smaller vessels like kayaks should exercise caution on the windier days. Minor heat risk will be present through the next seven days with temperatures warming into the 70s to 80s but relief is expected each night with overnight lows in the 40-50s. /sb && .AVIATION... 18Z TAFS: Winds region-wide will be lighter today but not calm by any means with speeds of 6-11kts and gusts around 15kts. Fair late morning to early afternoon cumulus will be found across Northeastern WA and North Idaho. After 03z, winds will subside region-wide with speeds less than 10kts under clear skies. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence for VFR conditions for all TAF sites. ----------------------- 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 77 49 73 46 75 48 / 0 0 0 0 0 0 Coeur d`Alene 73 48 69 45 72 47 / 0 0 0 0 0 0 Pullman 70 44 68 43 70 46 / 0 0 0 0 0 0 Lewiston 76 48 75 47 76 49 / 0 0 0 0 0 0 Colville 82 47 76 43 79 47 / 0 0 0 0 0 0 Sandpoint 73 46 69 44 72 46 / 0 0 0 0 0 0 Kellogg 71 45 70 44 72 46 / 0 0 0 0 0 0 Moses Lake 81 50 79 45 79 50 / 0 0 0 0 0 0 Wenatchee 82 53 76 49 80 55 / 0 0 0 0 0 0 Omak 85 53 80 46 81 54 / 0 0 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

412 FXUS66 KPDT 071707 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1007 AM PDT Thu May 7 2026 .KEY MESSAGES... - Above-normal temperatures and mostly dry conditions through this week into next week - 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... Breezy conditions are forecast to continue Thursday as a shortwave exits to the east over the Rockies and upper-level ridging rebuilds over the Pacific Northwest. Relative to Wednesday, a drier air mass (ensemble-advertised PWATs of 0.25-0.50") is forecast to be present in the wake of the shortwave, and areas of low relative humidity (10-20 percent) are 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 tracking across the Pacific Northwest from late morning to the evening. 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 today, the dry air mass coupled with sufficient downward mixing during the daytime should facilitate areas of low relative humidity (10-20 percent). Taking a glance at the weekend into the middle of next week, ensemble NWP guidance shows little to no signal for organized precipitation through Wednesday as upper-level ridging remains the favored scenario for the bulk of the West. Breezy westerly winds are likely (70 percent confidence) Sunday as the ridge axis shifts inland and ensemble guidance shows potential for yet another shortwave to ride over the top of the ridge. By Tuesday, pattern details are a bit unclear based on scenarios presented in ensemble clusters, but above-normal heights are strongly favored (at least 90 percent of ensemble members) through Wednesday. To briefly touch on forecast temperatures, for most of our population centers high temperatures in the upper 70s to upper 80s 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 /18Z TAFS THROUGH 18Z FRIDAY/...VFR conditions to prevail through the period. Breezy winds 12-17kts with gusts to 25kts will continue at sites DLS/PDT into the late afternoon and early evening, while winds will increase around 21Z at sites RDM/BDN and persist into the evening. Breezy winds will remain at site DLS overnight, with light winds prevailing elsewhere. Lawhorn/82 && .FIRE WEATHER... Areas of low (10-20 percent) relative humidity are 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 for the next week, and significant precipitation is unlikely (90 percent confidence). && .HYDROLOGY... The Naches River near Naches is forecast to remain above action stage for the next week. Above-normal temperatures are forecast to continue, and significant precipitation is unlikely (90 percent confidence) for the next week. && .Preliminary Point Temps/PoPs... PDT 76 49 75 47 / 0 0 0 0 ALW 76 52 75 50 / 0 0 0 0 PSC 82 54 82 49 / 0 0 0 0 YKM 83 50 79 45 / 0 0 0 0 HRI 79 52 77 48 / 0 0 0 0 ELN 77 46 70 42 / 0 0 0 0 RDM 80 41 76 38 / 0 0 0 0 LGD 75 42 73 41 / 0 0 0 0 GCD 78 43 76 41 / 0 0 0 0 DLS 79 49 75 48 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...86 AVIATION...82 FIRE WEATHER...86 HYDROLOGY...86

367 FXUS65 KREV 071903 AFDREV Area Forecast Discussion National Weather Service Reno NV 1203 PM PDT Thu May 7 2026 .KEY MESSAGES... * A warming and drying trend prevails through this weekend with above average high temperatures. * Near record heat is becoming increasingly likely by early next week. * Breezy afternoon winds are likely with a weak system to our north on Friday. && .DISCUSSION... An upper level shortwave over the Pacific NW will help keep afternoon high temperatures similar both today and tomorrow (low 80s valleys, low to mid 70s Sierra). It will also bring increased breezes Friday afternoon, with gusts 30-35 mph, mainly from the Sierra and eastward. High pressure only strengthens this weekend, helping us warm up and dry out. Afternoon highs will shoot into the upper 80s/low 90s by late this weekend for valleys, with upper 70s/low 80s for Sierra communities. The record highs for Reno Sunday through Tuesday are 90F, 89F, and 91F, respectively. Current chances to exceed 90F Sunday through Tuesday are 22%, 74%, and 60%, respectively. Monday looks to be the best chance at hitting, or surpassing, records as of now. The aforementioned high pressure peaks in intensity Monday over the Great Basin before shifting more to the Four Corners region by Wednesday. This may bring up some moisture from Baja California, which increases chances for showers and thunderstorms Wednesday and onward. -Giralte && .AVIATION... VFR conditions expected through the remainder of the week with mainly light and VRB winds. Afternoon gusts will reach up to 25 kts both today and tomorrow. KTRK can expect FG each night from 11-16Z, bringing IFR/LIFR conditions. -Giralte && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

520 FXUS66 KSTO 071743 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1043 AM PDT Thu May 7 2026 For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing. .KEY MESSAGES... - Hot and dry conditions are expected to develop early next week with Moderate HeatRisk Sunday-Tuesday. - Hottest Days Monday and Tuesday with triple digit and daily record highs possible. - Temperatures will still be above-normal Wednesday onward, but follow a gradual cooling trend with increased delta breeze influence. && .DISCUSSION... ...Thursday through Wednesday... Temperatures continue on a warming trend today with high temperatures 5 to 10 above normal as ridging builds over the eastern Pacific before moving over Northern California this weekend. Warmer and drier conditions will continue through the weekend, with widespread Minor HeatRisk through Saturday, with areas of Moderate in the foothills. Moderate HeatRisk becomes more widespread Monday through Tuesday. Lingering troughing influence will lead to an increased Delta breeze today through Sunday, as a result there may be some marine stratus intrusion in the morning especially on Friday and Saturday. Hottest days are expected to be Monday and Tuesday, with highs in the upper 90s to around 100. There is some uncertainty on whether locations will climb into the triple digits as the latest ensembles show the ridge axis further eastward over Nevada, but temperatures are still on track to be 10 to 20 degrees above normal. As a result, some places may see tied or broken daily high temperature records. The NBM indicates a 70 to 95% chance of 90 or greater throughout the entire Valley and Delta next Monday and Tuesday, with a 30 to 50% chance of 100 or more across portions of the central Sacramento Valley and northern San Joaquin. There may be some Delta breeze to give influenced areas a slight break for overnight lows. Minimum RH values trend lower through early next week as well, dropping into the 20s and teens by Monday. Ensembles depict the ridge breaking down towards the middle of next week which will result in a gradual cooling trend Wednesday onward, however temperatures will still be 5 to 15 degrees above normal. Delta breeze influence is expected to pick back up mid week as well. && .AVIATION... General VFR conditions are expected over the next 24 hours. Local MVFR/IFR ceilings are possible with marine stratus through the Delta and impacting Sacramento area TAF sites 12-18Z Friday. Surface winds generally 12 kts or less except near the Delta, where winds to 15 kts and gusts to 20-25 kts. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

214 FXUS65 KMSO 072019 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 219 PM MDT Thu May 7 2026 .DISCUSSION... KEY MESSAGES: - Showers and isolated thunderstorms continue this afternoon and evening primarily in NW Montana. - A strong ridge brings dry conditions and high temperatures into the 70s and 80s through the next week. - Dry afternoons with minimum relative humidities in the 20% range and below. A passing disturbance will trigger scattered showers and isolated thunderstorms, again, this afternoon and evening. The highest chances remain across northwest Montana, tapering off as you head south toward the I-90 corridor. Expect brief heavy rain and localized gusty winds near any storms, alongside widespread afternoon gusts of 15-25 mph. Starting Friday, a broad ridge of high pressure builds across the western U.S. dominating the weather pattern through the next week. This will bring a prolonged period of dry, quiet weather with high temperatures climbing into the 70s and 80s. Afternoon relative humidities will dry out into the 20 percent range and below. A couple of very weak waves may brush the region on Saturday and Monday, but impacts will be limited to slightly breezier winds and a minimal (10 percent) chance of a passing shower. && .AVIATION... Scattered showers and isolated thunderstorms are possible this afternoon and evening. This activity will primarily focus across northwest and west-central Montana, between 07/2000z and 08/0100z with brief MVFR conditions possible due to lowered ceilings along with some gusty outflow winds. Otherwise, widespread west-northwest winds will gust 15-25 kts at most terminals this afternoon before subsiding this evening. Note for KHRF: Active prescribed burning and fuels management in the vicinity is creating periodic, localized reductions in visibility due to smoke. Note for KSMN: Sensor observations are back online and reporting normally once again. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...None. && $$

128 FXUS65 KBOI 072006 AFDBOI Area Forecast Discussion National Weather Service Boise ID 206 PM MDT Thu May 7 2026 .KEY MESSAGES... - Continued warm, dry, and breezy through Friday with temperatures around 10 degrees above normal. - Dry cold front Friday afternoon leading to slight cooling Saturday. - Temperatures warming to 15-20 degrees above normal next Sunday through Wednesday. && .SHORT TERM /Through Saturday Night/... A nearly stationary ridge of high pressure remains anchored along the coast, keeping the region warm and dry through Friday. Temperatures will remain 5 to 10 degrees above normal for early May, with highs reaching the mid 70s to low 80s in the lower valleys. Surface winds will remain breezy during the afternoon hours, generally from the west or northwest at 10 to 20 mph with gusts up to 30 mph, especially within the Snake Basin. A weakening upper level trough moving through the Pacific will push a dry cold front across southeast Oregon and southwest Idaho Friday afternoon and evening. While the front lacks the moisture to produce precipitation, it will bring a period of increased winds. Winds will gust to around 30 mph behind the front Friday evening before tapering off overnight. Saturday will see a slight reprieve from the heat as temperatures drop closer to seasonal averages, though the cooling will be brief. By Saturday night, the ridge begins to re-amplify over the western United States, setting the stage for a significant warming trend heading into the second half of the weekend. && .LONG TERM /Sunday through Thursday/... Amplifying ridging over over the western CONUS will give way to the warmest temperatures of the season through the long-term period. A "cold" front late Sunday will offer just a few degrees of cooling and breezier conditions for Monday. Throughout the period, temperatures will be 15-20 degrees above normal, with temperatures in the Snake Plain ranging from 85 to 95 degrees. Some monsoonal moisture could work its way into our area by mid-week next week. Although uncertainty is higher in that solution. && .AVIATION /18Z Thursday through Friday/... Issued 1148 AM MDT THU MAY 7 2026 VFR. Surface winds: W-NW 5-15 kt with gusts to 20-30 kt this afternoon. Highest near KJER/KTWF. Winds aloft at 10kft MSL: NW 15-25 kt. KBOI...VFR. Surface winds: NW 5-10 kt with gusts up to 20 kt this afternoon. Weekend Outlook...VFR. Surface winds W-NW 5-10kt with gusts up to 22 kt near KTWF/KJER Sat/PM, becoming SW-SE 5-15kt Sunday. A cold front late Sun/PM will bring NW gusts of 20-30 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 SHORT TERM...JDS LONG TERM....NF AVIATION.....NF

646 FXUS65 KLKN 071930 AFDLKN Area Forecast Discussion National Weather Service Elko NV 1230 PM PDT Thu May 7 2026 .KEY MESSAGES... * Warming trend well underway today, and last through the rest of the week * High pressure will be the dominant weather maker across the Great Basin, signaling a prolonged stretch of dry weather * Record high temperatures are possible at several area climate sites beginning Sunday and into early next week && .DISCUSSION... (This evening through next Wednesday) A familiar pattern returns for this week as a warming trend kicks off for the second week of May. A REX blocking pattern is setting up again over the southwest. Also called a high over low, or figure 8 block, this pattern features a upper low off the coast of the Baja Peninsula topped by a upper ridge which will set up over the Great Basin. The result will be a prolonged period of dry conditions, and warming temperatures for NE Nevada through at least the middle of next week. Winds will be generally West to southwest at 10 mph to 20 mph with occasional gusts up to 30 mph possible. Temperatures will be the main story with daytime highs in the 70s and 80s through Saturday. Then as the ridge strengthens and amplifies over the west Sunday into early next week, highs will reach the 90s for many locations, which means that for this time of year, temperatures will be approaching, and may exceed record territory for a few spots. FORECAST CONFIDENCE & DEVIATIONS: There is high confidence for warming temperatures and dry conditions through Wednesday of next week. There is high confidence for a period of near record to record heat starting Saturday, and lasting through Wednesday. && .AVIATION... VFR conditions are forecast through Friday evening with breezy west to southwest winds of 10KT to 20KT with gusts up to 30KT possible. Remnant mid level moisture will generate FEW to SCT convective build-ups for KEKO, KELY, and KENV through Friday afternoon. No moisture is expected at this time from these build ups. && .FIRE WEATHER... High pressure building in across the much of the west this week will lead to elevating fire weather concerns as dry conditions continue through the middle of next week. Warming temperature are forecast to reach near to, or exceed record highs by the late weekend. Breezy afternoon west to southwest winds of 10 to 20 mph with gusts up to 30 mph, will combine with the temperatures to drop Humidity levels to the teens and single digits through at least Wednesday of next week. && .LKN Watches/Warnings/Advisories... None. && $$ DISCUSSION...98 AVIATION...98 FIRE WEATHER...98