Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >
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380 FXUS66 KMTR 100010 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 410 PM PST Fri Jan 9 2026 ...New AVIATION, MARINE... .KEY MESSAGES... Updated at 154 PM PST Fri Jan 9 2026 - High and dry pattern with offshore flow - Cold overnight/early morning conditions continue into the weekend - Hazardous beach conditions at all Pacific Coast beaches through tonight and again Sunday through Thursday && .SHORT TERM... Issued at 154 PM PST Fri Jan 9 2026 (This evening through Saturday) Another chilly night and morning are on tap again tonight with a Cold Weather Advisory and an Extreme Cold Warning set to go into effect 1AM to 9AM PST Saturday. As noted by the night shift, extra consideration of tomorrow`s low temperatures was needed given that straight NBM showed tomorrow`s low temperatures warming in comparison to today`s low temperatures. When comparing the deterministic NBM forecast to the NBM percentile forecast, it was noted that the deterministic NBM had a warm bias compared and was warmer than both the 50th and 75th percentiles. For that reason, utilized a blend of this morning`s low temperature observations and the NBM 50th percentile to lower the forecasted temperatures for tomorrow morning. This results in more widespread Cold Weather Advisory conditions and Extreme Cold Warning conditions in the interior Central Coast. Moderate to high confidence that temperatures will drop below 36 degrees across the interior Bay Area and portions of the Central Coast with probabilistic guidance showing a 80-90% chance of this occurring. Comparatively, looking at the probability of temperatures less than 32 degrees primarily highlights the interior Central Coast. There are a few localized areas meeting Extreme Cold Warning criteria (temperatures less than or equal to 32 degrees) in the North Bay Valleys and eastern Santa Clara Hills but these will be isolated with the majority of the zone expected to meet Cold Weather Advisory Criteria instead. Both of the cold weather products will expire at 9AM PST on Saturday with temperatures warming into the upper 50s to low 60s Saturday afternoon. Light, offshore winds are expected again tonight into tomorrow with locally gustier conditions expected across the highest elevations (generally above 2500 ft). Offshore winds look to continue for the next several days as ridging builds over the West Coast, a strong surface high (1045 hPa) sits over the Intermountain West, and comparatively lower pressure (1030 hPa) sits over California. As winds flows from areas of higher to lower pressure, the pressure gradient will continue to support offshore flow until we see that area of high pressure in the Intermountain West weaken. Current guidance suggests that the area of high pressure over the Intermountain West will start to weaken early next week but offshore flow persists for much of the short and long term forecast periods. && .LONG TERM... Issued at 154 PM PST Fri Jan 9 2026 (Saturday night through next Thursday) No major weather concerns for the upcoming week with surface high pressure and upper level ridging continuing. Afternoon temperatures gradually increase starting Sunday with high temperatures building into the mid to upper 60s, even a few pockets of low 70s across the interior Central Coast, by early next week. Mornings remain chilly through at least Tuesday with low temperatures in the 30s to low 40s across the region. Cold weather products will likely be needed Saturday night into Sunday morning again but confidence decreases that they will be necessary across most of the CWA starting Sunday night. By mid to late next week, morning low temperatures will be back in the 40s with only pockets of the upper 30s across the interior Central Coast. Overall, the forecast looks dry and warm for much of this upcoming week. If you plan on visiting the beach, ocean conditions are expected to remain unsettled with additional Beach Hazards Statements likely to be issued. Exercise caution along the coastline and never turn your back on the ocean. && .AVIATION... (00Z TAFS) Issued at 410 PM PST Fri Jan 9 2026 VFR through the TAF period for all sites but STS which will see spotty fog into Saturday morning. High clouds build through the night. Winds range from southerly to easterly through the TAF period for most sites, the more notable exception will be SJC which will see moderate northwest winds into the early night and again Saturday afternoon. Wind speeds stay light to moderate through the weekend. Vicinity of SFO...VFR through the TAF period. Light to moderate easterly winds last into the late night before reducing and becoming more variable. These light and variable winds last through the midday on Saturday before northeast winds build. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR through the TAF period. Light and variable winds last through the evening. Winds turn southeasterly overnight with moderate drainage winds expected to affect SNS into Saturday afternoon. && .MARINE... (Tonight through next Thursday) Issued at 410 PM PST Fri Jan 9 2026 A gentle to moderate breeze will persist over the coastal waters through Sunday. A moderate period and larger northwesterly swell will continue produce a rough sea state with shoaling near the coast, harbor entrances, and bars through late this evening. Seas will subside late tonight and into the weekend before building again early next week. Dry weather will continue with a high pressure system over the region. && .BEACHES... Issued at 321 AM PST Fri Jan 9 2026 Overall beach/surf zone still remain hazardous due to moderate period and higher swell. The largest surf/breaking waves will be this morning before easing through the day. High Surf Advisory still remains in effect through 10 pm Friday PST. Expect large breaking waves up to 22 feet, strong rip currents and sneaker waves from coastal Sonoma county to coastal Monterey county, excluding the northern Monterey Bay shoreline where a Beach Hazards Statement will be in effect. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning. Beach Hazards Statement remains in effect through Friday evening for the northern Monterey Bay shoreline. Expect hazardous beach conditions with strong rip currents, sneaker waves, and breaking waves up to 15 feet. This will result in dangerous conditions along the shoreline. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...High Surf Advisory until 10 PM PST this evening for CAZ006-505- 509-530. Cold Weather Advisory from 1 AM to 9 AM PST Saturday for CAZ502- 506-510-512>515-517-528>530. Extreme Cold Warning from 1 AM to 9 AM PST Saturday for CAZ516- 518. Beach Hazards Statement until 10 PM PST this evening for CAZ529. PZ...Small Craft Advisory until 9 PM PST this evening for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 10-60 NM. && $$ SHORT TERM...Kennedy LONG TERM....Kennedy AVIATION...Murdock MARINE...RGass 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 |
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