581 FXUS66 KSEW 070510 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 1010 PM PDT Wed May 6 2026 .SYNOPSIS... An upper level ridge will remain situated over Western Washington through Thursday. Onshore flow will continue throughout the week, leading to additional rounds of morning marine stratus over the next days. A weak frontal system will move over the area on Friday, bringing a small chance of showers to the coast and mountains. An upper level ridge will rebuild over the area this weekend into early next week, leading to a gradual warm up in temperatures. && .SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/... Temperatures will continue to slowly lower, but given the trend of the stratus stuck in place, low temperatures will likely remain relatively warm compared to forecast, in the low 50s. An upper level ridge will remain in place over Western Washington through Thursday. Onshore flow will keep stratus over the region into Thursday morning, with guidance suggesting clouds scattering out in the afternoon. Therefore, slightly warmer tomorrow with high temperatures in the mid to upper 50s along the coast and mid to upper 60s in the interior. Cloud cover will be reintroduced Thursday evening as the next system heads towards the region. On Friday the ridge axis will push east as a shortwave trough moves through the region, which will be accompanied by a weakening cold front. Not much expected in terms of precipitation with this frontal system. Majority of locations are expected to remain dry. The locations that have the highest chances of seeing precipitation will be limited to the coast and mountains, with current PoPs at 10% or less. 29/62 && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... Ensemble guidance is in good agreement that an upper level ridge will rebuild over Western Washington this weekend and likely persist into early next week. The ridge will keep strengthening into early next week, leading to a gradual warm up. The latest guidance suggests high temperatures this weekend will be in the low 60s along the coast and mid 60s to low 70s along the interior. Temperatures early next week through midweek will warm up to the mid 60s along the coast. Temperatures along the interior will be in the mid to upper 70s, with 80s possible in the southwest interior. 29 && .AVIATION... High pressure remains in place over the region. Low level onshore flow continues, which has maintained a fairly extensive stratus deck through the lowland. Near the surface, low level onshore flow continues with stratus clouds covering much of the lowlands. Most areas are within MVFR range. Clouds will lower overnight with pockets of IFR conditions. Weaker onshore pressure gradients will help low clouds to lift and scatter in the interior Thursday afternoon. KSEA...MVFR ceilings remain in place. Brief IFR conditions possible Thursday morning. Improving conditions after 21Z. S/SW winds to 10 kt. && .MARINE... Surface high pressure is over the offshore waters with lower pressure inland, resulting in ongoing onshore flow over western WA. Steep seas persist over the northern-most coastal waters with seas 8- 10 ft with a dominant period of 8 to 10 seconds, but seas will begin to ease early Thursday morning. Winds through the Strait have also be slightly lower that previously forecast, so confined the advisory to the central Strait through early Thursday morning. Onshore flow is weaker on Thursday. A weak front will cross the waters on Friday. Expect light winds over the waters on Saturday with a stronger onshore pushes Saturday night and Sunday night. 62 && .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-Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm. && $$

550 FXUS66 KPQR 070439 AFDPQR Area Forecast Discussion National Weather Service Portland OR 939 PM PDT Wed May 6 2026 Updated aviation discussion. .SYNOPSIS...High pressure aloft continues to dominate the pattern this afternoon, supporting another stretch of relatively warm and dry weather into next week. The daily concern/issue will be the marine layer: low clouds expand inland late night and early morning (with occasional coastal mist/drizzle), then retreat toward the coast during the afternoon. How quickly that happens will continue to drive day to day temperature swings. The only notable interruption arrives Friday into Saturday as a weak shortwave brushes the ridge, bringing a brief cool-down and more cloud cover. Warm, dry conditions rebound quickly for the weekend and persist into early next week, possibly trending warmer towards the middle of next week. && .DISCUSSION...Now through Wednesday...This late afternoon`s setup is still "ridge-driven" at the large scale, but our sensible weather is being controlled more by low-level marine influences. Coastal areas remain most prone to periods of stratus, and while any drizzle is generally confined to late night/early morning near the beaches, it can`t be ruled out in that window. Inland, the primary impact is temperature: slower morning clearing generally means a cooler afternoon, while earlier sunshine allows highs to run warmer. From tonight through Thursday, expect a steady rhythm of overnight inland stratus pushes through coastal gaps (occasionally reaching into portions of the Willamette Valley), followed by daytime clearing back toward the coast. Temperatures will stay near to above seasonal averages even on the "cloudier" days, with coastal and higher terrain highs mainly in the 60s and inland valleys mostly in the low 70s. Afternoon west winds will also continue, with the central Columbia River Gorge and nearby exposed areas seeing periodic gusts around 25-30 mph into the evening. Friday into Friday night is the only organized feature to note. Guidance continues to weaken the shortwave that rides over the ridge, and that keeps impacts limited to a modest increase in cloud cover during the morning and a slight dip in temperatures. Rain chances have dwindled further and are now around 5% or less even along the coast/coastal terrain and the north Cascades. At this point, measurable precipitation is not expected across the forecast area. By Saturday and into early next week, ridging quickly rebuilds. That supports a return to a mostly sunny, warmer pattern with the same day-night marine cloud cycle continuing near the coast. Temperatures look seasonably pleasant: 60s along the coast and higher terrain, and 70s to near 80 in inland valleys, including a favorable setup for a warm and dry Mother`s Day. Early next week, confidence lowers regarding exact afternoon temperatures. Current guidance suggests afternoon high temperatures anywhere between 70 and 88 degrees on Tuesday and 70 to 93 degrees on Wednesday. This wide range of afternoon high temperatures will likely narrow towards the weekend as future model runs try to resolve whether the next pattern will be another ridge or a trough. Current ensemble clusters remain in poor agreement, with each ensemble cluster suggesting a different story: GEFS showing an approaching trough, ENS showing a weakening ridge, GEPS showing a ridge lingering over the PNW. ~12 && .AVIATION...Onshore flow continues, though flow has turned more north to northwesterly instead of south to westerly. Marine stratus remains firmly in place along the coast into Thursday morning with MVFR cigs expected. The marine push is less intense under the north to northwest flow than previous nights, leading to more shallow stratus. Marine stratus is building again inland, but cigs are mostly hovering right around the MVFR 3000 ft threshold. Expecting cigs at most terminals to hover around 3000-3500 ft for a number of hours before lowering below 3000 ft around 08-12z. High pressure builds over the region on Thursday, shepherding in a dryer airmass, and the persistent marine stratus is finally expected to fully scour out both inland and along the coast. Expecting inland locations to improve to VFR by 14-17z Thu with the coast improving by 17-20z Thu, remaining VFR through the rest of the 06z TAF period. KPDX AND APPROACHES...Overcast ceilings are hovering around 3100- 3500 ft due to another night of marine stratus intrusion. However, confidence is lower regarding how ceiling heights will continue to trend into Thursday morning, which could range anywhere from 2000 to 4000 ft. Currently there is a 30-40% chance that ceilings wind up falling to 3000 ft or lower, increasing to 40-55% from 14-17z Thu. Winds remain light and northwesterly. -03 && .MARINE...Strengthening high pressure offshore will bring increasing northerly winds this evening, while a broader 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. The relatively stronger winds this evening 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 through this evening beyond 30 NM. As northerly flow weakens on Thursday and turns southerly on Friday as a weak front moves over the coastal waters and decays, 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 on Friday have now fallen to below 5%. 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 gradually increase each day from Saturday through Tuesday, while seas continue at 5-8 ft. -23/36 && .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

476 FXUS66 KMFR 070223 AFDMFR Area Forecast Discussion National Weather Service Medford OR 723 PM PDT Wed May 6 2026 ...Updated the Aviation and Marine Sections... .AVIATION...07/00Z 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 700 PM PDT Wednesday, May 6, 2026...Sub-advisory conditions are expected through Saturday. There will be a period of near advisory level winds late tonight into Thursday morning just south of Cape Blanco to between 5 and 30 nm offshore from Gold Beach. Otherwise, light to moderate north winds prevail through Thursday evening, switching to light southerly for Friday as a weak front passes through the region. Also, 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 resultant steep to very steep seas through early next week. && .PREV DISCUSSION... /Issued 223 PM PDT Wed May 6 2026/ DISCUSSION... A stubborn marine layer has kept temperatures a bit cooler than anticipated in the Umpqua Valley and Roseburg this afternoon. Some cumulus buildups have developed across the forecast area this afternoon, although we`re not anticipating showers or thunderstorms today. A marine layer will likely develop again tonight and linger in the Umpqua Valley and coast again. This could keep temperatures a few degrees cooler than what is currently in the forecast around Roseburg and portions of the coast. We should also see some more mist and fog along the coast as the boundary layer compresses under this upper level ridge. Temperatures remain warm on Thursday with highs 10 to 15 degrees above normal for early May. Although we`re not in fire season yet, the winds and humidities will create some elevated fire weather conditions east of the Cascades. Winds will be gusting close to 30 mph with humidities in the lower teens. We`ll see those conditions change into Friday as a short wave approaches the Oregon coastline. Temperatures will cool a few degrees, although remain above normal for this time of year. Once this wave passes, we`ll see temperatures push 10 to 15 degrees higher for the remainder of the weekend and continue into next week. It looks like a thermal trough will develop during Monday and aid us pushing temperatures higher. We`re currently forecasting to tie the high temperature record at KMHS of 88 degrees on May 11. No other records are at risk, although we`ll remain well above normal, just not smashing through records through the remainder of the forecast through mid week. -Smith && .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

610 FXUS66 KMTR 070638 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1138 PM PDT Wed May 6 2026 ...New SHORT TERM, LONG TERM, AVIATION, MARINE... .KEY MESSAGES... Updated at 1124 PM PDT Wed May 6 2026 - Warming and drying trend beginning today through the early part of next week - Temperatures peaking Monday - Moderate risk for heat-related illnesses for sensitive populations across the inland valleys beginning this weekend && .SHORT TERM... Issued at 1124 PM PDT Wed May 6 2026 (Tonight through Friday) Low clouds are building inland from the coast, covering the bays and working their way into some of the interior valleys. Expect chances for pockets of fog overnight, with the strongest chances in the North Bay. Because of the marine layer`s influence and the covering of stratus, overnight temperatures look fairly mild woth most areas seeing lows in the 50s and upper 40s. Only far interior valleys and higher peaks will fall further into the 40s. Thursday will see a slow erosion of the lower cloud cover, keeping certain areas on the cooler side compared to the areas that stay clear. Inland cloud cover will start clearing in the mid morning, however areas around the bays will keep cloud cover into the late morning and early afternoon. The immediate coast looks to keep cloud cover through the day with moderate to breezy winds, making for much cooler highs than the rest of the area. Expect highs around 60 degrees along the immediate coast, then the 60s and 70s for areas more inland, and into the 80s for areas not experiencing the morning cloud cover. A few areas in the far interior portions of Monterey Co look to break 90 degrees. Thursday night will offer fairly similar conditions to what we`re seeing tonight, but with an earlier inland push of coastal stratus. This will lead to low clouds filling around the SF Bay and Monterey Bay in the mid evening and will cause a quicker cool-down. The lower clouds and the marine layer influence look to go slightly farther inland. This wont have too much of an effect in morning lows, but will make some areas a slightly cooler for Friday as they linger into the late morning and early afternoon. While most areas will see slightly cooler conditions for Friday, a ridge builds to the north,leading to a small increase in temperatures for the interior North Bay. This will get things back on track for the weekend warming trend. && .LONG TERM... Issued at 1124 PM PDT Wed May 6 2026 (Friday night through next Wednesday) Friday night will continue to see the affects of the building ridge with a compression of the marine layer and a reduction in the overnight inland push of coastal stratus. Cloud cover will still be prevalent along the coast, but will struggle to enter the SF Bay and reach more of the inland areas. The reduction of marine influence along with the building ridge calls for much more of the inland areas to break into the 80s for Saturday, while the coast sits in the low 60s, and the slightly inland areas stay in the 90s. A few of the more inland areas look to break into the mid 90s. The reduction of the marine layer and building of the ridge continues into Monday, which looks to be the hottest day of the current forecast. Most of the interior valleys look to break into the 90s with widespread 80s for all but the near-coastal areas seeing the 60s and 70s. A building of a thermal belt will also call for much warmer lows on the higher peaks (60s and a few 70s) and will lead the peaks into the 90s as well from that warm start. Again the hottest area of the CWA looks to be interior Monterey Co, which will have a few spots looking to break 100 degrees. The longer term forecast shows good cooling for Tuesday, yet things will stay on the warmer side as the ridge begins to flatten and push east. This will call for a slightly more zonal flow, leading to weak onshore winds into the mid week. The national blend of models looks to continue the steady cooling trend in the late week, but the latest batch of long term model updates are hinting more at another ridge building, which will warm things up again in the late week. The current forecast follows the blend, but as things continue to update, more considerations may need to be made for the potential warming trend. && .AVIATION... (06Z TAFS) Issued at 1124 PM PDT Wed May 6 2026 MVFR/IFR clouds are building inland from the coast and look to reach each TAF site into the late night and early morning. LIFR conditions look to effect STS and HAF into the early morning and last through the mid morning, with some fog chances at STS as well. Winds will be mostly light overnight and through much of the morning. CLoud cover begins to erode for the more inland sites during the mid morning, but doesn`t clear around the bays until the late morning and early afternoon. The exceptions will be HAF which sees cloud cover rise back to IFR then MVFR levels, but never fully clears. Expect moderate to breezy winds into Thursday afternoon with these winds reducing again into the late evening. CIGs will lower back to IFR levels along the coast into the evening and will begin to fill around the bays again before nightfall. Vicinity of SFO...IFR CIGs last through the midday on Thursday with moderate west-northwest winds. Cloud cover scatters into the midday with lower clouds expected to clear in the mid afternoon as gusty west wind build. Gusts look to peak around 25 kts through the afternoon and evening. Winds reduce into the late evening as IFR CIGs build once again. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...IFR CIGs and light winds are expected through the mid to late morning. CIGs lower slightly for MRY into the late night with some reductions in visibility. VFR returns in the mid morning, first at SNS then MRY. Winds look to stay light at MRY, but become more moderate for SNS in the mid afternoon. Winds reduce into Thursday evening with IFR CIGs returning. && .MARINE... (Tonight through next Tuesday) Issued at 1124 PM PDT Wed May 6 2026 Winds from the northwest continue to increase. Fresh to strong north- northwest breezes will spread across both our coastal and outer waters for the weekend resulting in in building rough seas which will produce 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...Murdock LONG TERM....Murdock AVIATION...Murdock MARINE...Murdock 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

715 FXUS66 KOTX 070735 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 1235 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... 06Z TAFS: Drier air is working into the region with skies clearing and evening convection shifting into Montana. Main aviation concern through 10-12z will be gusty winds with gusts 20-30kts impacting the East Slopes of the Cascades, KEAT, KEPH, and KMWH. After 10-12z gusts will relax though steady winds of 9-14kts will continue through 18z. Winds region-wide will be lighter Thursday but not calm by any means with speeds of 6-11kts and gusts around 15kts. Fair late morning to early 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: Moderate to high confidence for VFR skies across the region. Main uncertainty is precise timing for wind gusts to subside. /sb ----------------------- 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 51 74 47 75 48 / 0 0 0 0 0 0 Coeur d`Alene 73 49 70 45 73 48 / 0 0 0 0 0 0 Pullman 70 45 69 43 71 46 / 0 0 0 0 0 0 Lewiston 76 49 76 47 76 48 / 0 0 0 0 0 0 Colville 82 49 76 43 80 47 / 0 0 0 0 0 0 Sandpoint 73 47 70 44 73 46 / 0 0 0 0 0 0 Kellogg 71 46 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 54 76 50 81 55 / 0 0 0 0 0 0 Omak 85 54 81 47 82 53 / 0 0 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...None. ID...None. && $$

914 FXUS66 KPDT 070557 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1057 PM PDT Wed May 6 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 /06Z TAFS THROUGH 06Z FRIDAY/... VFR conditions with periods of breezy winds and mid- to high- level clouds are forecast for the next 24 hours. && .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 80 52 76 50 / 0 0 0 0 ALW 82 54 76 53 / 0 0 0 0 PSC 84 56 82 55 / 0 0 0 0 YKM 87 50 83 51 / 0 0 0 0 HRI 81 54 79 54 / 0 0 0 0 ELN 75 47 77 48 / 0 0 0 0 RDM 79 43 80 42 / 0 0 0 0 LGD 79 47 75 43 / 0 0 0 0 GCD 82 45 78 44 / 0 0 0 0 DLS 75 53 79 50 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...None. OR...None. && $$ DISCUSSION...86 AVIATION...86 FIRE WEATHER...86 HYDROLOGY...86

636 FXUS65 KREV 070755 AFDREV Area Forecast Discussion National Weather Service Reno NV 1255 AM 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 late this weekend into early next week. * Breezy afternoon winds are likely with a weak system to our north on Friday. && .DISCUSSION... A high amplitude upper level ridge from the Eastern Pacific extending north towards the Alaska Peninsula continues through Friday morning resulting in a warming trend. Afternoon highs will increase to 5-10 degrees above average with typical westerly winds the next few days. On Friday afternoon, a weak upper level shortwave trough pushes through the PacNW, increasing our typical afternoon westerly winds. Gusts will be in the 20-30 mph range with a 10-50% chance of exceeding 40 mph. The main areas of concern will be north of I-80, especially mountain ridges and eastern slopes. Temps will briefly stop their gradual increase with this system. The ridge quickly returns on Friday evening and continues a slow eastward trajectory towards the Desert Southwest. More warmer and drier air moves in leading to higher afternoon temperatures through early next week. W Nevada and NE California valleys have a high (60-90%) chance of reaching their first 90 degree days of the season on Monday and Tuesday. The NV Basin and Range lowest valleys may reach the mid-90s by Monday. Moderate HeatRisk is very likely over western NV lowest valleys on both days. Temperatures have a 50-60% chance of breaking the record highs. 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 low rain and thunderstorm chances (below 10%) into the forecast. Anyway, the cloud cover will help drop temperatures back into the 80s for valley locations, but we remain 10-15 degrees above average. -HC && .AVIATION... VFR conditions prevail through Friday morning. KTRK will have IFR to LIFR between 10-16Z due to FG. Winds will be light and VRB overnight and in the morning, then from the west with speeds to 10-15 kts and gusts up to 25 kts between 19-03Z. -HC && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

657 FXUS66 KSTO 062115 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 215 PM PDT Wed May 6 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 end of the week with widespread Minor HeatRisk Thursday and Friday. - Widespread Moderate HeatRisk Sunday into Tuesday. - Hottest Days Monday and Tuesday with triple digit and daily record highs possible. && .DISCUSSION... ...Today... Latest satellite shows loop shows the morning stratus layer be replaced by cumulus and stratocumulus clouds in the Valley, Delta, and foothills. In spite of the cloud cover, early afternoon temperatures are running 5 to 10 degrees warmer than 24 hours ago as eastern Pacific ridging builds in. Highs this afternoon are expected to be in the mid to upper 70s. ...Thursday through Tuesday... Wednesday is expected to be dry with high temperatures 3 to 7 degrees above normal as eastern Pacific high pressure ridging builds into into the region with widespread Minor HeatRisk in the Valley and Delta. 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 with. Minor HeatRisk is expected to extending through most of the foothills and mountains by the Saturday, with some areas of Moderate HeatRisk are expected in the Valley by Saturday. More widespread Moderate HeatRisk arrives Sunday and continues through Tuesday. Hottest days are expected to be Monday and Tuesday, with highs in the upper 90s to around 100. 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. Minimum RH values trend lower through the week as well, dropping into the 20s and teens by the weekend into early next week. Northerly winds the were expected Saturday have diminished quite a bit, and are no longer a concern. && .AVIATION... VFR conditions expected over the next 24 hours. Surface winds generally 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. && $$

767 FXUS65 KBOI 070608 AFDBOI Area Forecast Discussion National Weather Service Boise ID 1208 AM MDT Thu May 7 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Continued warm, dry, and breezy through Friday. - Dry cold front Friday afternoon leading to slight cooling Saturday. - Warming trend Sunday through Tuesday and staying hot and dry through the week. && .SHORT TERM /Through Saturday Night/... Issued 213 PM MDT WED MAY 6 2026 Warm, dry weather will continue the next several days due to a nearly stationary ridge of high pressure aloft along the coast. A faster-moving upper trough in the mid Pacific will weaken as it moves eastward through the ridge and into our area Friday evening. A dry cold will pass through our CWA Friday afternoon. Thursday and Friday should be 2-4 degrees warmer than today. Daytime winds Thursday and Friday will be from the west or northwest 10-20 mph with afternoon gusts 25-30 mph (in the Snake Basin). Nighttime winds will be west or northwest 4 to 8 mph, with enough mixing to keep low temperatures near normal. && .LONG TERM /Sunday through Thursday/... Issued 213 PM MDT WED MAY 6 2026 Slightly cooler temperatures on Saturday will give way to a prolonged period of hot and dry conditions as an upper ridge builds over the western US. Temperatures will rise to 15 to 20 degrees above normal by Sunday, with highs of 85 to 90 degrees in the Snake Basin and in southeast Oregon. This will bump HeatRisk levels into the minor category - primarily affecting those who are extremely sensitive to heat and without cooling/hydration. && .AVIATION /06Z Thursday through Friday/... Issued 1207 AM MDT THU MAY 7 2026 VFR and mostly cloudy tonight. Surface winds: W-NW 5-10 kt, increasing to 8-15 kt with gusts up to 22 kt this afternoon. Magic Valley gusts increase to 30-35 kt this afternoon. Winds aloft at 10kft MSL: W-NW 15-30 kt. KBOI...VFR. Surface winds: Variable and light tonight, becoming NW 5- 12 kt this morning with afternoon gusts up to 20 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.....JM SHORT TERM...LC LONG TERM....JR

139 FXUS65 KLKN 070750 AFDLKN Area Forecast Discussion National Weather Service Elko NV 1250 AM PDT Thu May 7 2026 .KEY MESSAGES... * Warming trend will start in earnest 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... (Today through next Thursday) WEATHER PATTERN OVERVIEW: High pressure will be bringing quiet and dry weather through the next seven days across northern and central Nevada. Breezes to 25 to 30 mph will be possible each afternoon with highs in the 70s and 80s through Saturday, with much warmer temperatures in the 80s to near the low 90s by Sunday and Monday. No precipitation is expected. FORECAST CONFIDENCE & DEVIATIONS: No changes were made to the NBM forecast. && .AVIATION... VFR conditions are expected through the next 24-hour period. Winds will be breezy during the afternoon with gusts to 30KT. && .FIRE WEATHER... High pressure will keep a lid on the active weather across the fire district through the next week. Afternoon highs will warm to above normal temperatures with minimum relative humidity values in the single digits and teens. Afternoon breezes will be in the 20 to 30 mph range Thursday and Friday. However, early season green fuels && .LKN Watches/Warnings/Advisories... None. && $$ DISCUSSION...86 AVIATION...86 FIRE WEATHER...86