389 FXUS66 KSEW 271553 AFDSEW Area Forecast Discussion National Weather Service Seattle WA 853 AM PDT Mon Jul 27 2026 .SYNOPSIS... Weak warm front hanging over the north coast today will lift north tonight. Trailing weak cold front will move through Tuesday. Dry and warmer weather Thursday and Friday as an upper level ridge centered over the Southwest builds back towards the Pacific Northwest. Ridge weakens Friday night. Upper level trough moving into Western Washington over the weekend with cooler temperatures and a chance of showers mainly coast and mountains. && .SHORT TERM /TODAY THROUGH WEDNESDAY/... Satellite imagery shows cloudy skies over Western Washington early this morning. Doppler radar still has some light rain along the north coast. Temperatures at 3 am/10Z were in the mid 50s to lower 60s. Weak warm front hanging out over the north coast today keeping a chance of rain in the forecast for the north coast and West Slopes of the Olympics. Remainder of the area in the warm sector ( means a lot more in the winter ) with low clouds dissipating this morning and middle and high levels clouds at times this afternoon. High temperatures warming a few degrees over the interior but still staying in the 70s. Highs in the mid 60s along the coast. Warm front lifting north tonight with the weak trailing cold front moving through mainly the northern sections Tuesday. Rain increasing along the coast tonight spreading inland over the Northwest Interior and the North Cascades Tuesday morning. Chance of light rain or drizzle in the Puget Sound area during the morning commute. Front dissipating in the afternoon. Lows tonight in the 50s. Highs Tuesday in the mid 60s to mid 70s. Upper level trough well offshore Tuesday night and Wednesday with southwesterly flow aloft continuing over the area. Models have slowed down the ridge building which now looks to begin Thursday. Lows in the 50s. Highs in the 70s for the interior and mid to upper 60s coast. Felton && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... Models delaying the start ridge building from the southeast into Thursday. 500 mb heights rising into the mid to upper 580 dms Friday with yet another upper level trough digging south offshore. Highs Thursday warming into the 70s and lower 80s for the interior. Friday will be the warmest day with highs in the mid 70s to mid 80s inland. Highs along the coast both days in the mid 60s to lower 70s. Upper level trough moving into Western Washington for the weekend with a couple of shortwaves moving through the northern portion of the area. Most of the precipitation confined to the coast with just an increase in cloud cover and cooler temperatures over the interior with these features. Highs inland in the 70s Saturday and upper 60s to mid 70s Sunday. Highs on the coast in the mid 60s. Felton && .AVIATION... Cloudy conditions across the north-western portions of the area this morning as a weak front sitting along the coast dissipates. Most locations north of Everett and along the Olympic Peninsula are MVFR to IFR, while areas around Seattle and south are VFR. Expect VFR to spread across the entire interior as clouds lift and scatter through the morning, while the coast likely remains under at least MVFR cigs through the rest of the day. Ceilings look to fill back in across the area overnight, with the coast lowering to IFR with the interior likely staying high-end MVFR to low end VFR. West-southwesterly winds continue today around 8 to 12 mph, with a few gusts to 20 mph possible at PAE and PWT. Winds turn more due westerly overnight and remain around 5 to 10 mph. KSEA...SCT MVFR cigs lifting and scattering this morning to VFR through tonight. Ceilings look to redevelop early Tuesday morning and may dip close to MVFR. There is a 20-25% chance of MVFR cigs from 12-19Z Tue. Southerly wind 6 to 10 knots becoming southwesterly 18Z-21Z. Winds become more west after 02Z Tue. Winds remain southwesterly 6 to 10 kt overnight. 62 && .MARINE... Weak warm front hanging over the northern coastal waters today will lift north tonight. Weak cold front moving through Tuesday. High pressure will build in behind the front Tuesday night then remain over the waters through Friday. Small craft advisory winds likely in the Central and Eastern Strait of Juan de Fuca both Thursday and Friday evenings. Felton && .FIRE WEATHER... Weak warm front over the north coast today lifting north tonight. Weak cold front moving through the northern portions Tuesday. Wetting rains for the north coast and West Slopes of the Olympics likely ( 50-60 percent chance ). Drier conditions return Wednesday with a brief warming trend Thursday and Friday. Minimum RH values dip into the 30s Thursday and Friday, but persistent low level onshore flow will help maintain good humidity recoveries in the overnight hours. Cooler weather over the weekend will keep fire weather concerns at a minimum. Felton && .SEW WATCHES/WARNINGS/ADVISORIES... WA...None. PZ...None. && $$

492 FXUS66 KPQR 271755 AAA AFDPQR Area Forecast Discussion...UPDATED National Weather Service Portland OR 1055 AM PDT Mon Jul 27 2026 Updated aviation discussion. && .SYNOPSIS...Persistent onshore flow will bring near-average temperatures with varying degrees of morning clouds and afternoon sunshine for much of the next week. A series of weak fronts will bring notable chances for light rain and drizzle to portions of the Washington and north Oregon coasts Tuesday and next weekend, while Friday is likely to be the warmest day. && .DISCUSSION...Now through Sunday...The large-scale pattern remains fairly steady through the next week with the region wedged between upper-level troughing over the Gulf of Alaska and upper-level ridging over the Rockies and Central Plains. In general, the weather locally will be typical for the mid-summer: morning clouds followed by increasing afternoon sunshine, seasonable temperatures, and largely dry conditions, but with some variations as the strengths of these two dominant features change relative to one another. Today, upper ridging wins out as heights aloft rise marginally, yielding clouds clearing all the way to the coast by the early afternoon with seasonably warm high temperatures in the 60s on the coast and mid 80s within the Willamette Valley. On Tuesday, an upper shortwave passing to the north will tilt the scales in favor of upper troughing, sending a weak front toward the coast resulting in cooler temperatures across the region and chances for light rain or drizzle along the coast and Coast Range, increasing from 40% at Florence to 60% at Newport, 75% at Tillamook, 95% at Astoria, and nearly 100% on the Long Beach Peninsula. Chances for accumulating rainfall are lower along the I-5 corridor, ranging from 20% at Salem to 30% at Portland, 60% at Woodland, and 75% at Kelso/Longview. Through the latter half of the workweek, the upper-level ridge will strengthen and retrograde westward into the Great Basin, increasing heights aloft locally and again tipping the balance toward warm and dry weather. As such, temperatures will trend upward each afternoon, peaking on Friday in the upper 60s to around 70 degrees on the coast and in the mid to upper 80s within inland valleys. Despite this trend, onshore flow will continue, limiting the risk for hazardous heat. Minor HeatRisk is favored for the entire region on Friday, with 20-40% chances for Moderate HeatRisk in urban and suburban areas from Salem north to Vancouver, WA. By next weekend, there continues to be higher uncertainty in the evolution of the upper-level pattern, but many ensemble members depict more pronounced troughing returning to the Pacific Northwest, favoring cooler temperatures and further chances for rainfall. The details of timing and potential rainfall amounts remain fuzzy at this lead time, but those near the coast or within coastal terrain will be the most likely beneficiaries of any rainfall, with chances increasing to the north. -36 && .AVIATION...Through 18Z Tuesday...Mostly clear skies and VFR flight conditions will continue for inland TAF sites today. Low clouds with MVFR ceilings at the coast are beginning to scatter out, with VFR flight conditions expected at KAST and KONP by 18-19Z Monday. Winds at the coast will increase out of the southwest to near 10 kt with gusts to around 15 kt during the early afternoon, before easing below 5 kt and backing out of the south later this evening. A sea breeze front will bring increasing west to northwest winds for inland TAF sites between 01-06Z Tuesday, sustained between 5-10 kt. Winds become calm thereafter. MVFR ceilings are expected to return to the coastal terminals by approximately 06Z Tuesday. There is some uncertainty regarding exactly how low ceilings will get at KONP; although low- end MVFR ceilings are the most likely outcome, there is around a 50% chance for IFR ceilings below 1000 ft. Inland TAF sites will most likely remain VFR tonight into tomorrow morning, however there is a 20-35% chance for a period of MVFR ceilings between 2000-3000 ft between 10-18Z Tuesday. KPDX AND APPROACHES...Mostly clear skies will maintain VFR flight conditions today. Light and variable winds around 5 kt will become northwesterly around 5-10 kt around 02Z Tuesday with an incoming sea breeze. Although skies will most likely stay clear tonight, there is a 20-30% chance for a broken or overcast low stratus deck with ceilings between 2000-3000 ft between 10-18Z Tuesday. -23 && .MARINE...A weak front offshore will finally retreat northward today, bringing an end to light rain or drizzle chances off the south WA and for north OR coasts by this afternoon. Diurnal southerly winds around 10-15 kt and continue into Tuesday morning. Building high pressure behind another passing frontal boundary will see a wind shift to more seasonable northerly flow on Tuesday. Strengthening northerly flow through the latter half of the workweek will see 25-50% chances for peak wind gusts to reach 20-25 kt Wednesday through Friday afternoons, especially within 10 NM of the coast. Seas continue at 4-6 ft through the next week with a dominant west to northwest swell at 8-9 seconds. -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

730 FXUS66 KMFR 271738 AFDMFR Area Forecast Discussion National Weather Service Medford OR 1038 AM PDT Mon Jul 27 2026 ...Updated AVIATION discussion for 18Z TAFs... .KEY MESSAGES... * Hot and dry conditions persist, with generally seasonable summer weather expected for the week ahead. * Daily marine layer pushes will result in some areas of fog and low clouds along the coast, the coastal valleys, and at times, as far inland as the Umpqua Basin. && .DISCUSSION...Typical summer temperatures and normal diurnal winds are generally expected for the week ahead, with the upper flow remaining from the southwest between a continental ridge and persistent troughing over the northeast Pacific. The ridge is strong enough to keep the overall pattern rather stagnant, although a few weak shortwaves will pass through or near the area throughout the week. This pattern will keep temperatures in a seasonable range, with a slight nudge upwards possible towards the end of the week as the ridge retrogrades slowly towards the West Coast. Temperatures may reach about 5 degrees above normal on Friday, especially east of the Cascades. Current forecast highs for Friday have the coast in the low 70s, the Umpqua Valley floor in the high 80s, and most other areas in the mid to high 90s. Isolated areas of triple digits look to be limited to the lower Klamath River Valley. Those extra 5 degrees look to cool over next weekend. As mentioned above, a few shortwaves will traverse the southwest flow aloft and approach the Pacific Northwest, though most are forecast to pass just to the south. With a distinct lack of atmospheric moisture, the waves will have very little, if any, chance of producing convection/precipitation, so the only real discernible weather that may accompany these impulses will be slightly stronger marine pushes along the coast, and slightly enhanced afternoon winds. One shortwave may move directly over the area Thursday, but unless there is some kind of unforeseen moisture inflow to the area, which is unlikely given the stranglehold the ridge has over us, even this impulse will not bring us any rain or thunderstorm chances. && .AVIATION...27/18Z TAFs...VFR levels are generally present across northern California and southern Oregon, with scraps of MVFR ceilings over Brookings as of writing this discussion. Smoke from area wildfires remains over central Lake and easternmost Douglas counties, but upper level flow will keep this smoke away from area terminals. Marine stratus looks to build along the Oregon coast this evening, with IFR or MVFR levels possible into Tuesday morning. Other areas will see VFR levels with normal diurnal breezes through the TAF period. -TAD && .MARINE...Updated 1230 AM PDT Monday, July 27, 2026...Sub- advisory conditions under light south through westerly winds and low seas are expected to continue into the start of the week ahead. Seas will be a mix of fresh short period northwest swell and low long period south swell. Winds will shift to the north by Tuesday afternoon, possibly building small craft conditions across area waters Wednesday through the rest of the week. && .FIRE WEATHER...Updated 230 AM PDT Monday, July 27, 2026... Humidities will inch slightly higher today with slightly weaker wind gusts. Overall, warm and dry conditions continue for most of next week with a low off the BC coast bringing deeper west flow off the Pacific. With this deeper west flow, we should also see some stronger marine pushes overnight with good recoveries in some valleys west of the Cascades. Most models are showing a series of weak shortwaves moving through the area this week. There is very little atmospheric moisture for these shortwaves to use, so thunderstorm/precipitation chances are very low, with little more to mark the passage of the waves than some slightly stronger marine pushes and slightly enhanced afternoon winds. However, a small group of ensemble members in the ECMWF are picking up on thunderstorms around central Oregon and north eastern Oregon with the strongest wave on Thursday afternoon. A very small minority(2/50) have some activity in our forecast area in south western Oregon. Something to keep an eye on over the next few days. -Smith/BPN && .MFR WATCHES/WARNINGS/ADVISORIES... OR...None. CA...None. PACIFIC COASTAL WATERS...None. && $$

707 FXUS66 KEKA 271914 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1214 PM PDT Mon Jul 27 2026 .KEY MESSAGES... * Moderate risk for sneaker waves along the Lost Coast and Mendocino Coast through Wednesday. * Elevated fire danger today and Tuesday for interior areas due to breezy afternoon winds. * Hot temperatures return late week into the weekend. * Coastal stratus likely to form each night and clear each afternoon through at least the middle of the week. && .SYNOPSIS...Near to slightly below normal temperatures are likely for the interior areas, while near to slightly above normal coastal temperatures are likely continue through Wednesday. Breezy afternoon winds elevate fire danger in eastern Trinity, eastern Mendocino, and Lake counties. Hot interior temperatures return late this week. && .DISCUSSION...Warmer coastal temperatures may continue through Wednesday this week. This is highly dependent on the persistence of stratus into the afternoon and how early northwesterly winds start. A weak marine inversion will allow for at least partial, if not full, clearing in the afternoons. The Mendocino Coast will see breezier afternoon winds which will support closer to normal temperatures. The troughing pattern has also brought breezy afternoon wind gusts of 20 to 30 mph in the interior areas, mainly in the higher elevations and channeled terrain (such as Clear Lake and the Trinity River valley). Low afternoon relative humidities in Trinity, eastern Mendocino, and Lake Counties along with these winds brings an elevated fire weather threat. There is high confidence in high pressure rebuilding over the area later this week. NBM is showing moderate to high probabilities for high temperatures in the triple digits for most interior valleys starting Friday and continuing into next week. Currently, minor to moderate HeatRisk is expected. /JB/JJW && .AVIATION...Stratus has started to erode from the coast late this morning, bringing VFR conditions to all areas. Occasional MVFR impacts are possible for the coastal terminals this afternoon from lingering stratus, but generally skies are expected to be mostly clear. Stratus returns this evening and overnight bringing IFR to MVFR ceilings. Some models do show lower ceilings and possibly fog to the coastal areas, but confidence in that is generally low. Breezy northwest winds are likely in the interior areas this afternoon and evening. /JB && .MARINE...The sea state is dominated by a small 3 to 5 foot long period southerly swell and some small mid period westerly and northerly swells. A second reinforcing long period southerly swell will arrives Tuesday. Winds will remain very light, only up to 4 to 8 kts north of Cape Mendocino. Northerly winds strengthen 15 to 20 kts, locally up to 25 kts around the cape this afternoon. Northerlies trend higher in all waters starting Tuesday. Localized areas of gale conditions will develop in the expansion fan around Cape Mendocino. /JJW && .FIRE WEATHER...Breezy westerly winds will continue in the afternoons today and Tuesday for interior areas and may be particularly breezy with gusts of 20 to 30 mph over the ridges and channeled terrain in eastern Trinity, northeast Mendocino, and Lake Counties. These areas are forecast to have low afternoon RHs in the teens and 20s. Localized and brief critical conditions are possible with these low RHs and winds. Overnight recoveries are expected to be good aside from the higher elevations of Lake and eastern Trinity County. Closer to the coast, a deep marine layer brings high RH and perhaps stratus and/or fog into the river valleys overnight. Afternoon RH ranges from 60s to 80s near the immediate coast to 20s to 40s in interior Humboldt, Del Norte, and western Mendocino Counties. Ridging rebuilds later this week into the weekend bringing much warmer high temperatures to the interior with most valleys forecast to reach the high 90s and triple digits. Afternoon RHs will again be in the teens and 20s for the eastern interior. Weak shortwaves arrive over this same period which may support some breezier afternoons along with this heat and low afternoon RH. Confidence is low at this time, but elevated fire weather conditions are again possible. /JB && .BEACH HAZARDS...A long period southerly swell with periods up to 20 seconds remains in from tropical systems in the Eastern Pacific. A second reinforcing long period southerly swell will arrive Tuesday. These energetic swells will bring a low to moderate risk of sneaker waves that would be most hazardous on steep, south and southwest facing beaches along the Lost Coast and Mendocino Coast. Sneaker waves are a unique hazard, with up to 30 minutes between waves. Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath. Even ankle to knee deep water can knock you down and drag you out when a sneaker wave hits. Pay attention and stay above the high water line and any wet sand to stay safe. If the ground is wet, waves have surged there recently. Stay safe and never turn your back on the ocean! /JJW && .EKA WATCHES/WARNINGS/ADVISORIES... CA... Beach Hazards Statement through Wednesday afternoon for CAZ104-109. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 1 PM PDT Tuesday for PZZ455. Small Craft Advisory until 9 PM PDT Wednesday for PZZ475. && $$ 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

282 FXUS66 KMTR 271852 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1152 AM PDT Mon Jul 27 2026 ...New AVIATION... .KEY MESSAGES... Updated at 1238 AM PDT Mon Jul 27 2026 - Breezy onshore winds expected each afternoon and evening through early in the week - Gradual warming starting midweek, with increasing Moderate HeatRisk for interior locations heading into the weekend - Elevated fire weather threat across the Diablo and Santa Lucia Ranges this week - Hazardous beach conditions at the Pacific Coast with an increased risk for sneaker waves and rip currents thru mid-week && .UPDATE... Issued at 1016 AM PDT Mon Jul 27 2026 Overall the forecast seems to be on track, though forecast temperatures are running 1-2 degrees below current observations. We`ll continue to examine the potential for hotter conditions through this week with the latest guidance remaining consistent with projections for Moderate HeatRisk for much of the interior portions of the Bay Area and Central Coast, particularly across the Diablo and Santa Lucia Ranges. Additional information will be forthcoming with our full forecast update later today. && .SHORT TERM... Issued at 1238 AM PDT Mon Jul 27 2026 (Today and tonight) Satellite imagery tonight continues to indicate marine stratus struggling to make a push inland. The SFO-SAC pressure gradient is around +4 which should result in an inland push by early morning, and clearing by late morning, possibly early afternoon for the terminals closer to the coast. Temperatures today are generally right around normal for this time of year, warmer than normal at higher elevations (~1500ft and higher). Breezy onshore flow especially into the gaps and valleys across our area will continue to dry fuels (see fire weather discussion for more details) and lead to elevated fire weather concerns, especially at higher elevations that will not see good RH recovery overnight. The most dangerous portion of the forecast both today and through the remainder of the week is the S-SW swell producing sneaker waves and riptides. One count had over 25 water rescues across our Pacific coastline Sunday, and likely more that didn`t get reported to the media. Be extra careful and never turn your back on the water. && .LONG TERM... Issued at 1238 AM PDT Mon Jul 27 2026 (Tuesday through Sunday) Warmer temperatures are on the way, especially by the end of the week into next weekend with increasing odds of more widespread Moderate HeatRisk and potential heat advisories. However, there`s still plenty uncertainty in the magnitude of the increasing heat. Cluster analysis maintains some troughing in our vicinity until late next weekend into the first week of August. Deterministic guidance struggled with Fausto this far out and expect that to continue with Genevieve. Depending how far north Genevieve tracks will determine how far north the persistent troughing over the EPAC gets nudged north and allows more impactful H50 height rises and thickness increases. The forecast remains dry throughout with the exception of possible coastal drizzle associated with the marine layer. Fire weather concerns will continue to increase through the extended forecast as fuels continue to dry and cure. Avoid any activities that could lead to a spark and ignition, fires that do start are likely to spread quickly. && .AVIATION... (18Z TAFS) Issued at 1151 AM PDT Mon Jul 27 2026 Widespread moderate onshore breezes (10-20 kt) prevail through the afternoon and ease by sunset. Coastal sites and SFO have a high chance of experiencing gusts in excess of 18 kt this afternoon. Lingering clouds should dissipate no later than noon, except at HAF where they will linger until ~22Z today. Model guidance tends to be in agreement on a very shallow marine layer tonight of less than 1000 feet. Therefore, low confidence on how far inland it will push. Highest confidence for IFR-MVFR ceilings is at our coastal sites (HAF, MRY, and SNS). Depending on how warm SJC gets today, the bay- land temperature contrast may be strong enough to develop a land breeze overnight. Some models have hinted at the possibility, but considering the winds will be light and the trend from the past few nights, confidence is low at this time so the TAF was left with a predominant NW flow. Vicinity of SFO...VFR through the afternoon with moderate westerly breezes. SFO will have another round of gusts around 30 kt today. Medium confidence on stratus arrival tonight as low-end MVFR ceilings may arrive between 09-12Z Tuesday and linger until ~18-19Z tomorrow. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR anticipated shortly at MRY and then VFR forecast to prevail through 05-09Z Tuesday. Gusty onshore flow ramps up between 19Z-21Z with peak gusts in the 20-22 knot range. The general model consensus is for MVFR/IFR cigs to re-develop over the bay and infiltrate both sites by sunrise Tuesday. Confidence is low to medium on the exact timing thanks to the slightly compressed marine layer. The earliest arrival time for intermittent stratus would be 05Z Tuesday at MRY and closer to 10Z Tuesday at SNS, several hours later than climatological norm. Trends in satellite will be monitored as earlier cloud development (or later as it has been lately) across the bay may necessitate bumping the onset time up earlier. Confidence is high that VFR will return at SNS before the valid end time of the current TAF set. At MRY, confidence in a return to VFR isn`t as high, but ceilings should transition from IFR to MVFR after 15Z Tuesday. && .MARINE... (Today through Saturday) Issued at 947 AM PDT Mon Jul 27 2026 Fresh northwesterly breezes increase to strong today, persisting through the week with frequent gale force gusts along the Big Sur and Point Reyes coastal jet regions. Moderate seas build to rough in the outer waters by tomorrow and continue through the week. Distant tropical cyclones continue to send long period southerly swells our way through the work week. && .FIRE WEATHER... Issued at 534 AM PDT Mon Jul 27 2026 Breezy onshore winds and critically dry afternoon RH through the week will translate to an elevated fire weather threat. This threat will persist through mid-week and potentially into the latter half of the week and into the weekend. The most likely region for starts and fire spread will be across the interior Central Coast where Energy Release Components (ERC) are projected to climb above the 95th percentile. While morning RH recovery will moderate some through the week, the shallow marine layer will equate to generally poor overnight recovery for elevations at or above 2,000 feet through Wednesday morning. This will be particularly true across the Mayacamas, highest peaks of the East Bay Hills, the Diablo Range, Santa Cruz Mountains, Santa Lucia and Gabilan Ranges. Nocturnal drying (rapid decrease in RH through the pre-danw hours) may also transpire which will increase the burn period or time in which fire behavior may not diminish. Individuals across the area are advised to avoid activities that may spark a fire. Fire crews are urged to exercise extra caution when executing any prescribed burns, especially where fuels, topography, and weather align. && .BEACHES... Issued at 145 PM PDT Sun Jul 26 2026 Tropical cyclones in the Eastern Pacific will continue to generate 18-20 second (long-period) southwesterly swell which has reached the coastline of the San Francisco Bay Area and Central Coast. As such, sneaker waves and strong rip currents are the primary concerns. However, breaking waves can reach up to 10 feet along some south and southwest facing beaches and break points (like Santa Cruz, Pacifica, and parts of Stinson or Ocean Beach). This can be particularly surprising when wave heights increase suddenly after a period of seemingly tranquil wave action. In fact, sneaker waves can have 20+ minutes in between the larger sets (breaking waves) with significant "flat/calm looking" times between them. Due to the long period, sneaker waves are powerful and can catch beachgoers by surprise and can result in people and pets being swept into the cold, turbulent ocean. Rip currents are strong enough to pull the strongest swimmers away from shore. Check conditions before you head out! Swim near a lifeguard if possible. Stay back from the beach, and away from jetties, piers, beachside rocks, and other waterside infrastructure. Never turn your back to the ocean and if you have small children or pets at the beach, please keep an eye on them. Hazardous beach conditions are anticipated to persist through Wednesday afternoon. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...Beach Hazards Statement through Wednesday afternoon for CAZ006- 505-509-529-530. PZ...Small Craft Advisory until 9 PM PDT this evening for Mry Bay-SF Bay N of Bay Bridge. Small Craft Advisory until 9 AM PDT Tuesday for Pigeon Pt to Pt Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm. Gale Warning until 9 AM PDT Tuesday for Pt Pinos to Pt Piedras Blancas 0-10 nm. && $$ SHORT TERM...JM LONG TERM....JM AVIATION...Navarrete/Bain MARINE...Navarrete 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

887 FXUS66 KOTX 271758 AFDOTX Area Forecast Discussion National Weather Service Spokane WA 1058 AM PDT Mon Jul 27 2026 .KEY MESSAGES... - Periodic breezy winds with seasonably normal temperatures Sunday through Wednesday. Elevated to critical fire weather conditions Tuesday for central WA. - Above normal temperatures return by Thursday with highs in the 90s. - Critical Fire Weather expected for portions of the Inland Northwest Saturday August 1. && .SYNOPSIS... Breezy winds will linger through Wednesday across Central Washington, resulting in elevated to locally critical fire weather conditions. Temperatures will stay cool to near seasonal normals in the 80s. Above normal temperatures return later next week in the 90s with continued dry conditions. Monitoring Saturday for a dry cold front passage of similar magnitude to yesterday. && .DISCUSSION... Monday: The Inland Northwest will remain between troughing off the PNW coast and a ridge over the central US for today. An enhanced thermal pressure gradient across the Cascades in the afternoon and evening will bring breezy to gusty conditions across central and eastern Washington. Areas that will see the highest winds (25 to 30 mph) include the Okanogan Valley, Waterville Plateau, and Columbia Basin. With minimum relative humidity values 18 to 25 percent, elevated to critical fire weather conditions are expected in these areas. This will result in rapid fire spread for both new and existing fires. Temperatures Monday will be in the mid to high 80s, right around normal for this time of year, resulting in only Minor HeatRisk. Tuesday: On Tuesday, the low off the PNW coast will move inland, ushering another dry cold front through the forecast area. This will bring widespread wind gusts 15 to 20 mph, and more localized higher wind gusts 25 to 35 mph in the usual areas: Cascade gaps, Waterville Plateau, Columbia Basin, and Okanogan Valley areas. These areas have a 40 to 50 percent chance and above at seeing maximum wind gusts 35 mph or higher on Tuesday evening. With relative humidity values remaining low at 20-30 percent, this will bring elevated to isolated critical fire weather conditions back to these areas. With relative humidity values being slightly higher than Monday, fire weather headlines are not anticipated. Temperatures on Tuesday remain near normal. Along the Cascade crest, there is a 10-20 percent chance of light precipitation. Elsewhere, expect continued dry conditions. Wednesday through Friday: Once the cold front moves through, the region will again be in between offshore troughing and a ridge over the central US. The thermal pressure gradient will be weaker than on Monday and Tuesday, bringing breezy winds 10 to 20 mph to central and eastern Washington. However, the ridge will begin retrograding westward and strengthening during the last two days of the work week, resulting in increasing temperatures and a return to the 90s on Friday. Friday looks to be the hottest day of the week, with Moderate HeatRisk returning to parts of the region. This will also increase the thermal pressure gradient, bringing slightly higher wind gusts near 25 mph throughout the basin, Waterville Plateau, and Okanogan Valley areas. Next weekend: Long-term guidance and clusters both favor another trough moving across the region and ushering yet another dry cold front through the area on Saturday. This will again increase winds across the entire forecast area, and relative humidity values remaining low will result in another round of critical fire weather conditions. Areas that have the highest NBM probabilities (20 to 40 percent and above) for 40 mph wind gusts on Saturday are the upper Columbia Basin, Waterville Plateau, and Okanogan Valley areas. Throughout the week into next weekend, chances for precipitation remain at or near zero percent. /AS && .AVIATION... 18Z TAFS: Mainly VFR through the 18z TAF cycle. Any flight restrictions will be due to lowered visibilities resulting from surface level wildfire smoke. High- resolution guidance is most confident in this impacting KPUW and KLWS with 5-7SM visibilities, potentially bringing periodic MVFR conditions. Future TAF amendments may be needed as smoke impacts unfold. Otherwise, seasonably breezy south to southwest winds will develop this afternoon, though gusts should remain under 20kts at the TAF sites. FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Low confidence in impacts to visibilities at the TAF sites from regional wildfire smoke. Moderate to high confidence in expected wind speeds and directions. ----------------------- 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 57 88 56 86 55 89 / 0 0 0 0 0 0 Coeur d`Alene 58 87 57 86 57 89 / 0 0 0 0 0 0 Pullman 52 84 50 83 51 86 / 0 0 0 0 0 0 Lewiston 62 92 61 91 62 94 / 0 0 0 0 0 0 Colville 52 87 50 87 50 89 / 0 0 0 0 0 0 Sandpoint 58 86 57 85 56 89 / 0 0 0 0 0 0 Kellogg 55 84 55 83 55 86 / 0 0 0 0 0 0 Moses Lake 58 89 54 88 56 90 / 0 0 0 0 0 0 Wenatchee 64 86 59 88 62 91 / 0 0 0 0 0 0 Omak 58 91 54 89 58 92 / 0 0 0 0 0 0 && .OTX WATCHES/WARNINGS/ADVISORIES... WA...Air Quality Alert until 11 AM PDT Wednesday for Central Chelan County-Lower Garfield and Asotin Counties-Northeast Blue Mountains-Northeast Mountains-Okanogan Highlands-Okanogan Valley-Upper Columbia Basin-Waterville Plateau-Wenatchee Area-Western Chelan County-Western Okanogan County. ID...Air Quality Alert until noon PDT Wednesday for Central Panhandle Mountains-Idaho Palouse-Lewis and Southern Nez Perce Counties-Lewiston Area. && $$

788 FXUS66 KPDT 271734 AFDPDT Area Forecast Discussion National Weather Service Pendleton OR 1034 AM PDT Mon Jul 27 2026 .KEY MESSAGES... - Diurnal breezes expected much of this week, with Tuesday and Saturday being the windiest days. - Quiet weather for the upcoming week. && .DISCUSSION... Dry southwesterly flow will continue over the Pacific northwest around the periphery of high pressure over the mid section of the country. A weak frontal boundary will move through on Tuesday. The high will move westward toward the four corners by the end of the week, coupled with low pressure moving into western Canada, will allow for the flow to become more westerly. There is little expected in the way of sensible weather this week. Diurnal breezes are expected almost every day, with Tuesday and Saturday being the windiest days. A weak front on Tuesday will bring an increase in winds, mainly across the Cascade gaps, Columbia Basin, Gorge and Kittitas Valley. Winds will gust in the 25 to 30 mph range in these areas. Probabilities are 50 to >90 percent in these area of wind gusts >=25 mph, however probabilities decrease to only a few spots >=50 percent for wind gusts >=39 mph. However, humidities will also be a bit higher ahead of the front before coming back down behind it. The rest of the week looks to have lighter winds until Saturday, when the combination of the high pressure moving westward and low pressure moving into Canada will tighten the pressure gradient. Additionally there will be another frontal boundary moving through. All of these combined will increase winds across the normally breezier locations to 25 to 25 mph, with some locally higher gusts. NBM probabilities of wind gusts >=25 mph are above 80 percent across almost all of out region. NBM probabilities of wind gusts >=39 mph are >=50 percent across the Basin, Gorge Kittitas Valley, Foothills of the Blue Mountains and Simcoe Highlands. Depending on timing, this could be the next time frame of critical fire weather conditions. && .AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...Generally VFR conditions anticipated. Brief periods of MVFR due to smoke/haze cannot be ruled out, but specifying impacted terminals remains a challenge. Winds will see an uptick this afternoon across KDLS, KRDM, KBDN with gusts up to around 25 kts, otherwise winds will be 12 kts or lower. Branham/76 && .Preliminary Point Temps/PoPs... PDT 88 57 87 55 / 0 0 0 0 ALW 90 63 90 60 / 0 0 0 0 PSC 92 61 92 57 / 0 0 0 0 YKM 91 59 89 56 / 0 0 0 0 HRI 91 61 90 58 / 0 0 0 0 ELN 84 56 81 52 / 0 0 0 0 RDM 88 50 87 49 / 0 0 0 0 LGD 90 56 89 55 / 0 0 0 0 GCD 92 54 92 54 / 0 0 0 0 DLS 88 62 84 59 / 0 0 0 0 && .PDT WATCHES/WARNINGS/ADVISORIES... WA...Air Quality Alert until 11 AM PDT this morning for WAZ028>030. OR...Air Quality Alert until noon PDT Wednesday for ORZ041-044-049- 050-502-503-505>511. && $$ DISCUSSION...77 AVIATION...76

975 FXUS65 KREV 270701 AFDREV Area Forecast Discussion National Weather Service Reno NV 1201 AM PDT Mon Jul 27 2026 .KEY MESSAGES... * Hot and dry conditions prevail through midweek with afternoon breezes up to 20-25 mph. * Warming trend brings highs into the triple digits by the weekend, introducing areas of Major HeatRisk for lower valleys. && .DISCUSSION... Hot and dry conditions are the name of the game this week. Temperatures will slowly increase each day, with triple digits reaching the lower valleys of W NV by Wednesday. The current forecast puts 100F in Reno on Thursday, which currently has a 45% chance of occurring. Better chances occur Friday through early next week, increasing to 80-85%. With records for Reno in the 103-104 range, our chances seem slim to set any new records. Moderate HeatRisk becomes widespread by the middle of the week, with Major HeatRisk in lower valleys. Said Major HeatRisk will become wider in areal coverage by the weekend. If you`re planning to be outdoors this week, make sure to wear plenty of sunscreen, stay hydrated, and take breaks in the shade. This heat will be brought about by high pressure progressing further westward from its current position over the central United States. Latest 500 hPa models show a brief shortwave Wednesday, which may slow the rate at which our temperatures are increasing. As of now, any additional impacts from this feature have yet to be resolved. Afternoon zephyr breezes of 20-25 mph will continue each day this week. Combined with low RH values, pockets of elevated fire weather conditions are likely. As the heat only continues, fuels will continue to dry and cure. Avoid activities that cause a spark, including dragging trailer chains, driving motorized vehicles over dry vegetation, and target shooting. -Giralte && .AVIATION... VFR conditions prevail through the week with gusts of 20-25 kts. Increasing high temperatures may introduce density altitude concerns for KRNO/KCXP/KMEV by the weekend. -Giralte && .REV Watches/Warnings/Advisories... NV...None. CA...None. && $$

829 FXUS66 KSTO 261824 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1124 AM PDT Sun Jul 26 2026 .KEY MESSAGES... - Elevated fire weather conditions today and Monday in the Burney Basin due to low relative humidity and breezy southwesterly wnds. Winds slightly weaker Monday, but low humidity values continue. - Increasing heat across interior northern California later this week, with Moderate HeatRisk. && .DISCUSSION... Seasonable high temperatures continue across interior NorCal, with mostly clear skies dominating the area. Synoptic pattern aloft shows ridging to our southeast and weak offshore troughing in the PacNW. Pattern has helped temperatures remain seasonable and dry for the area. Pattern will remain relatively unchanged the next few days, with slight retrograding of the ridge and troughing lifting/breaking down to our northwest. These slight pattern changes however will allow for increases of afternoon high temperatures, especially Wednesday and Thursday as triple-digit heat will return to the area. Warmest temperatures will be in the northern Sacramento Valley and northern San Joaquin Valley, where onshore flow will be less prominent. Moderate HeatRisk will return to those aforementioned areas on Wednesday and Thursday. Later down the week, ensembles suggest high pressure further retrograding to be near the Four Corner`s region by Friday/Saturday. NBM suggests as ridge builds in, high temperatures will begin to rise to slightly above-normal by Friday and continuing into Sunday. Right now, if that pattern were to develop it doesn`t appear to be a major heat event, but high temperatures could range from around 5-10 degrees above seasonal norms. Mostly widespread Moderate HeatRisk would accompany the warmer temperatures, but we will continue to monitor the progression and development of the upper level pattern to see if any heat related products would be necessary later this week. For today and Monday, elevated fire weather conditions will continue in the Burney Basin and portions of the NE foothills. While wind speeds will be slightly lower compared to Friday and Saturday of last week, low daytime humidity values in the low to mid teens are still expected. Easier fire starts will be the primary concerns in those regions. Prolonged dry conditions and potential above normal heat later this week will also need to be monitored for at least elevated fire weather conditions. && .AVIATION... VFR conditions are forecast to prevail throughout interior Northern California over the next 24 hours. Winds generally below 12 kt, but can`t rule out some gusts in the mountains as well as near the Delta after 22Z to around 20 kt. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$

373 FXUS65 KMSO 271834 AFDMSO Area Forecast Discussion National Weather Service Missoula MT 1234 PM MDT Mon Jul 27 2026 .DISCUSSION... KEY MESSAGES: - Hot, dry, and smoky conditions continue through this week. - Isolated thunderstorms remain a threat for southwest Montana including Butte. Potentially expanding northward late this week. - Even hotter, drier, and windier conditions by Saturday. Elevated fire weather conditions. - Cool down to near average temperatures Sunday, though it remains dry. The Northern Rockies will remain along the western periphery of a broad ridge of high pressure. Toward the end of the work week, the ridge will amplify as a deep, stationary Pacific trough moves east into British Columbia. Beginning as early as Friday, embedded shortwave energy ejecting off the trough could interact with the ridge. Current guidance targets late Saturday into early Sunday morning for the ridge breakdown. Hot, dry, and smoky conditions will be common this week. Depending on the thickness of wildfire smoke, daytime temperatures could be attenuated several degrees from the current forecast. Degraded air quality and reduced visibility remain the primary impacts. Sensitive groups should limit outdoor exertion. The only hint at precipitation for the first part of the week is isolated thunderstorm chances in Lemhi County and southwest Montana (mainly afternoons/evenings) as limited monsoonal moisture interacts with daytime heating. Beginning Wednesday and lasting through Friday, models show potential disturbances that could expand thunderstorm coverage further north into west-central Montana and north-central Idaho. If thunderstorms do develop, they would be mostly dry with gusty outflow potential. There is a concern for nocturnal storms, particularly on Thursday night but overall confidence is low at this point. There is a growing consensus that a ridge breakdown will occur later Saturday into Sunday based on the latest ensemble clusters. This transition period is significant given increased wind potential and elevated fire weather concerns. && .AVIATION...Wildfire smoke will continue to be the primary concern through mid week, as terminals will occasionally drop to MVFR visibilities. Otherwise, ridging will dominate with hot and dry conditions. There is only a slight probability (less than 20 percent) for thunderstorm development across Lemhi County into southwest Montana each afternoon. Expect afternoon gusts to 20 kts diminishing around sunset for terminal sites. && .MSO WATCHES/WARNINGS/ADVISORIES... MT...None. ID...&& $$

463 FXUS65 KBOI 271643 AFDBOI Area Forecast Discussion National Weather Service Boise ID 1043 AM MDT Mon Jul 27 2026 .UPDATE...Updated aviation discussion. && .KEY MESSAGES... - Warm and dry conditions will persist over the next several days. - Smoky conditions will limit high temperatures by a few degrees and continue degraded air quality. - Slightly cooler with near-normal temperatures through midweek. - Return of warmer than normal temperatures late week. && .SHORT TERM /Through Wednesday Night/... Issued 312 AM MDT MON JUL 27 2026 Light to moderate southwest flow from the large high pressure system over the Four Corners region will persist over our area through the week. Temperatures will generally stay near seasonal normals. Generally lighter afternoon wind breezes will be expected over the next few days, with the exception of elevated downvalley winds over the Baker Valley corridor each evening. The dense smoke over valleys have moderated peak temperatures, so slightly cooler than normal temperatures remain possible through midweek. Little improvement expected to wildfire smoke due to lighter winds aloft over the next several days. The aforementioned downvalley winds over Baker Valley will continue to steer dense smoke into the Treasure and Magic Valleys, especially during the nighttime and morning hours. && .LONG TERM /Thursday through Monday/... Issued 312 AM MDT MON JUL 27 2026 Southwest flow aloft will continue to be the name of the game in the long-term period. With high pressure aloft over the Four Corners region, and troughing over British Columbia, conditions will remain warm, dry, and breezy. Later in the week, the high pressure aloft will shift over the Great Basin, allowing for temperatures to rise to around 5 degrees above normal Thursday and after. Afternoon breezes will increase come Saturday and Sunday, as a shortwave associated with the aforementioned trough moves inland and tightens the pressure gradient over our area. A dry cold front associated with the shortwave will sag south come this weekend, allowing for temperatures to cool to near, or even slightly below, normal Sunday and Monday. Otherwise, the region is expected to remain considerably drier than normal throughout the long-term period. && .AVIATION /18Z Monday through Tuesday/... Issued 1043 AM MDT MON JUL 27 2026 Wildfire smoke resulting in areas of MVFR/IFR horizontal visibility, and significantly reduced slantwise visibility. Mtns obscured in smoke. Slight improvement in the afternoon before degrading again overnight and early Tue/AM. Surface winds: SW-NW 5-15 kt. Gusts to 20-25 kt in portions of E-Oregon and higher terrain of SW-Idaho this afternoon/evening. Winds aloft at 10kft MSL: SW 5-15 kt. KBOI...Wildfire smoke resulting in MVFR/IFR visibilities. Some improvement this afternoon, before degrading again overnight and early Tue/AM. Surface winds: NW 8-12 kt with gusts to around 18 kt this afternoon. Then light and variable overnight. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...Air Quality Alert until 2 PM MDT Tuesday for IDZ011-012-014- 015-029-033. Air Quality Alert until 1 PM MDT Wednesday for IDZ013-016-028- 030. OR...Air Quality Alert until 11 AM PDT this morning for ORZ062. && $$ www.weather.gov/Boise Interact with us via social media: www.facebook.com/NWSBoise www.x.com/NWSBoise AVIATION.....NF SHORT TERM...JY LONG TERM....JY

975 FXUS65 KLKN 270832 AFDLKN Area Forecast Discussion National Weather Service Elko NV 132 AM PDT Mon Jul 27 2026 .KEY MESSAGES... * Low shower and storm chances today for far eastern portions of NV * Above average temperatures and a warming trend this week * Increasing HeatRisk by Friday and the weekend && .DISCUSSION... (Today through next Monday) High pressure is slowly sliding west over the great basin region will become the main weather headliner for the next week and and half, but models hint at a parting shot of mid level moisture Monday afternoon. With the majority of the region staying dry and very warm, for UT/NV border area, convective buildups will be likely across eastern NV and even a low 20% to 20% chance for a isolated thunderstorm or two will be possible. The best chances will be along the UT/NV border and could reach Ely and West Wendover. However any precipitation that reaches the ground will be brief and very light as storm motion limits accumulations. Tuesday through next Monday mid/long range models are resolute in the return of quiet Summertime conditions, with breezy afternoon W to SW winds, and very warm temperatures. as the upper ridge builds in over the southern Great Basin. Fire weather, and Heat Risk conditions will need to be watched closely as the drying out of both the land and atmosphere commences, and heat builds, overnight relief will be brief if any. Winds will be out of the west to SW with breezy afternoon winds ranging at 10 to 20 MPH with gusts up to 30 MPH possible. Temperatures will range in the mid 90s to mid 100s. A heat advisory in effect for sections of Elko County for Sunday, and may need to be expanded as heat impacts build through the week. As for Fire weather, RH percent values will drop into the low teens to single digits in the afternoons, with overnight recoveries only making it back to the upper 20s, combined with afternoon winds may lead to periods of elevated to critical fire weather conditions. FORECAST CONFIDENCE & DEVIATIONS: There is moderate confidence for a low chance of a few isolated thunderstorms Monday afternoon for far eastern NV. There High confidence in the return of quiet Summertime conditions, with breezy afternoon winds and very warm temperatures Tuesday through the start of next week. && .AVIATION... Gusty afternoon winds up to 25KT are expected at all sites except KENV Monday. Additionally there is a 10 to 20 percent chance of thunderstorms near or at KELY and KENV this afternoon. Otherwise, VFR conditions and light winds expected. && .FIRE WEATHER... Elevated southwesterly wind speeds of 10-20 mph with gusts near 25 mph are possible across northern NV Monday afternoon. Combined with RH values in the single digits this will create elevated to critical fire weather conditions in NW Nevada. A low percent chance for thunderstorms exists along the eastern NV border in FWZ 425/470 this afternoon. Storms that do occur will create hazardous conditions including dangerous lightning and gusty erratic winds. Faster storm motions today will inhibit precipitation that does occur from extinguishing any new starts. && .LKN Watches/Warnings/Advisories... Heat Advisory until 11 PM PDT this evening NVZ033. && $$ DISCUSSION...98 AVIATION...94 FIRE WEATHER...99