A frontal boundary will slowly move eastward and clear most of the eastern seaboard by Sunday. Showers and thunderstorms, some severe, will accompany this front alongside the threat of heavy rainfall; These threats may linger along the Gulf Coast states into early next week. Meanwhile, record spring-like warmth is forecast, mainly east of the Mississippi River, this weekend into next week. Read More >
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219 FXUS66 KMTR 071752 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 952 AM PST Sat Mar 7 2026 ...New MARINE... .KEY MESSAGES... Updated at 328 AM PST Sat Mar 7 2026 - Warmer today and tomorrow with highs 10 to 15 degrees above average - Slight cooling into the work week, but another warming trend in the mid week - Dry conditions through the extended forecast && .UPDATE... Issued at 948 AM PST Sat Mar 7 2026 As of about 9 AM the 24 hours temp trends are up all over the Bay Area by about 3 to 10 degrees. Sonoma is experiencing the largest warm up with 24 hour trends in the 8 to 18 degree range. With no clouds on the visible satellite, this trend will continue through the day. The forecast remains on track with no forecast updates at this time. && .SHORT TERM... Issued at 328 AM PST Sat Mar 7 2026 (Today and tonight) Aside from a few breezy spots in the higher elevations in the North and East Bay, winds have mostly subsided. The upper level pattern has flexed into a very tilted ridge and has reduced the pressure gradient, leading to much weaker winds, but still offshore flow. This reduction in winds with continued offshore will cause temperatures to climb well into the 70s for all but the immediate coast which will stick to the 60s, and a few interior valleys breaking into the 80s. Today looks to be the warmest day of the forecast for Sonoma Co and San Francisco, while Sunday looks to be warmer for the rest of the Bay Area and down the Central coast. Temperatures will be slow to cool into the night, and overnight lows look to be some of the warmest in the forecast. Most areas will stick to the upper 40s and lower 50s. && .LONG TERM... Issued at 328 AM PST Sat Mar 7 2026 (Sunday through Friday) As mentioned above, Sonoma Co and San Francisco see slightly cooler conditions for Sunday from a modest return of onshore flow in those areas. The rest of the Bay Area and Central Coast will continue to see the warming trend with most areas breaking into the mid to upper 70s and more of the interior valleys and higher elevations breaking into the 80s. This will place high temps just below 15 degrees below average for most of the region. Relief from the warmth comes in the form of the upper level pattern continuing to shift. The ridge pushes south and restores zonal flow to Northern California. This won`t be particularly strong, but a zonal pattern means onshore flow. Along with the change in flow, pressure will reduce, allowing for a return of a shallow marine layer into Monday morning, and chances for fog. Monday afternoon will see highs drop roughly 5 degrees for much of the area, with continued cooling expected for Tuesday. Humidities will also see some improvements for the early work week, easing fire weather concerns. The cooling trend be short lived as the zonal flow pattern turns back into a gentile, but much larger, ridge pattern into the mid week. Since the gradient of the ridge will be gentle, temperatures will build at a slow pace, but the fact that this will be a much larger ridge means it`ll be much slower for it to exit. The second half of the work week will be a slow warming and drying trend with weakening winds for all but the outer marine zones. Again the size of the ridge will make it difficult to push out of the region. This will be coupled with the fact that it will be sitting at a south enough latitude to avoid the more active portion of the jet stream in the Pacific Northwest. This means this ridge could last well into the mid month, causing warm temperatures and limited cloud cover. Cold fronts and low pressures will push plenty of rain through Washington and Oregon, while this ridge prevents those chances from making it this far south. Some of the very long term models hint at the ridge breaking in the second half of the month, but it could last longer than that. && .AVIATION... (18Z TAFS) Issued at 948 AM PST Sat Mar 7 2026 VFR will prevail throughout the forecast period at all terminals. Wind shear has been removed from the TAFs as models continue to weaken it through the late morning. Overall, it doesn`t get much better to fly than weather like today. Vicinity of SFO...VFR. Light to moderate Easterly winds backing to Northwest in the early afternoon. Light winds overnight under clear skies. Sunday morning will be a repeat of this morning, but about 25% weaker winds. VFR is dominant for at least the next 36 hours. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...VFR. Moderate offshore flow will give way to light onshore flow during the afternoon. Winds go light and variable overnight, but take an offshore component, similar to this morning. && .MARINE... (Today through Thursday) Issued at 951 AM PST Sat Mar 7 2026 Moderate to strong conditions will remain across the coastal water today. Highest conditions will be North of Half Moon Bay, subsiding farther south. Winds and seas will build across all waters Sunday into Monday with gales developing in some areas. Expect elevated sea states through much of the coming week. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory until 3 AM PST Sunday for Pt Arena to Pt Reyes 10-60 NM. && $$ UPDATE...BFG SHORT TERM...Murdock LONG TERM....Murdock AVIATION...BFG MARINE...BFG 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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