A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >
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185 FXUS66 KMTR 251152 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 352 AM PST Sun Jan 25 2026 ...New AVIATION... .KEY MESSAGES... Updated at 252 AM PST Sun Jan 25 2026 - Offshore winds weaken today; light winds then prevail into mid-week - Slight chance of rain showers late Tuesday/Wednesday AM along coastal ranges and the North Bay. Amounts generally less than 0.1" - Slight chance of light rain next weekend in the North Bay with amounts expected to be less than 0.1" && .SHORT TERM... Issued at 252 AM PST Sun Jan 25 2026 (Today and tonight) Tule fog in the vicinity of the East Bay and southern Napa County is struggling to advance farther west where dewpoint depressions in lower lying areas remain around 5-10 degrees as of 3AM PST. High clouds have begun making their way inland on the subsident side of the amplified ridge axis just offshore and will continuing drifting over our area throughout the day. Although the synoptic ridging pattern across the west will persist into the beginning of the upcoming work week, we`ll see a series of shortwave troughs interrupt the ridging at our latitude with little impact on our ambient weather conditions today and tonight. High temperatures today will be cooler than Saturday for the North Bay, Bay Area and East Bay with increasing mid/high level cloud cover and the weak offshore flow getting neutralized. Overnight lows into early Monday morning will also tick a few degrees warmer for most of our interior locations. && .LONG TERM... Issued at 252 AM PST Sun Jan 25 2026 (Monday through Saturday) Modest increases in mid level heights and thickness will increase temperatures on Monday into the low to mid 60s for most of our area as the upper level ridging is reinvigorated through Tuesday. However, the reincarnated ridging on Tuesday is progressive. A deepening trough over the eastern Pacific in the wake of the ridging appears to lift north as it approaches the coast, with a trend toward less rainfall for our area Wednesday from the previous update Saturday afternoon. The longwave synoptic pattern remains active through the remainder of the extended forecast, especially for eastern CONUS, but the net result for the Bay Area and Central Coast is relatively quiet weather. There`s a slight chance for some light amounts of beneficial rain next weekend. && .AVIATION... (12Z TAFS) Issued at 352 AM PST Sun Jan 25 2026 VFR through the TAF period for all sites but APC which will see spotty fog into the mid morning. High clouds continue to build into the region through much of the the day, but thin into Monday morning. Winds will mostly say light through the TAF period with wind directions being determined by mostly localized effects. Vicinity of SFO...VFR through the TAF period. Expect mostly light and variable winds through the late morning before turning northeast for the afternoon and the evening. Winds become light and variable again into Sunday night and northeast again late Monday morning. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR through the TAF period. Light and affect MRY through the forecast. Winds stay east to southeast through the morning and into the mid afternoon, with more moderate winds possible at SNS. Lighter west to northwest winds build in from the bay in the mid afternoon, but winds look to turn easterly in the early night. East-southeast winds build in the late night at SNS, becoming more moderate. && .MARINE... (Today through Friday) Issued at 252 AM PST Sun Jan 25 2026 Light winds turn southerly in the mid afternoon increase to become more moderate for Monday and Tuesday. Winds diminish and become northerly on Wednesday. Moderate seas will prevail through Tuesday. Conditions deteriorate Wednesday as seas build to become rough to very rough. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && $$ SHORT TERM...JM LONG TERM....JM 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 |
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