Area Forecast Discussion
Issued by NWS San Francisco Bay Area, CA

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898 FXUS66 KMTR 252045 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 145 PM PDT Sat May 25 2024 ...New SHORT TERM, LONG TERM... .SYNOPSIS... Issued at 1259 AM PDT Sat May 25 2024 Cool with abundant overnight stratus through the weekend. Warming and drying trend set for next week with temperatures around seasonal normal. && .SHORT TERM...
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Issued at 118 PM PDT Sat May 25 2024 (This evening through Sunday) Another afternoon of lingering pesky stratus from the morning. The lingering clouds are slowly thinning per satellite and have a strato-cu look. Needless to say the clouds are impacting temperatures across the interior with a few spot running behind predicted max temps. We`ll leave forecast as is since there`s still some daytime heating left and some inland sunshine is still predicted. One thing that is similar to yesterday are the stronger onshore winds. While not as strong as 24 hours ago, still seeing some gusts up to 35 mph through the inland gaps/passes. Finishing out the weekend: The upper level trough that helped support the deep/cool/moist marine layer will exit eastward. Semi-zonal flow with building 500 mb heights and warming 850 mb temps will build over the region. As a result, a more compressed marine layer will develop tonight. Still cannot rule out patchy fog or drizzle tonight, but it should be less than Saturday morning. Temperatures on Sunday will warm on avg 3-8 degrees away from the coast. Highs will be in the upper 50s to 60s coast and 70s to mid 80s. Onshore flow continues to ease, but gusty winds through gaps/passes will continue.
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&& .LONG TERM...
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Issued at 140 PM PDT Sat May 25 2024 (Sunday night through next Friday) The warming trend from Sunday will continue through much of next week as high pressure nudging in from the S battles an upper trough approaching from the N. As for sensible weather, pretty quiet with night and morning clouds with inland daytime sunshine. Should be noted the warming trend will pause briefly mid-week before peaking next Friday with far interior locations reaching 90 degrees.
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&& .AVIATION... (18Z TAFS) Issued at 1032 AM PDT Sat May 25 2024 Satellite highlights a slow clearing of the broad spread of low clouds across most terminals. A mix of VFR, MVFR, and IFR. most terminals will become VFR between 19-21Z, with lower confidence on clearing time for Monterey Bay terminals. Stratus will return tonight with a chance that all terminals, except Monterey Bay will remain as low as MVFR ceiling heights through the night until Sunday morning. Onshore winds will become breezy this afternoon with possible gust up to 25 knots through the valleys and gaps. Winds return to moderate overnight. Vicinity of SFO...MVFR ceilings with expected clearing time around 20-21Z. Onshore winds will remain breezy with gusts up to 25 kt this afternoon before returning to moderate overnight. MVFR conditions are expected to return overnight with timing a bit uncertain, but models agree between 07-08Z. SFO Bridge Approach... Similar to SFO. Monterey Bay Terminals...IFR/MVFR conditions prevail with moderate confidence of clearing to VFR near 21Z. Westerly/Northwesterly winds will become breezy this afternoon before returning to relatively moderate overnight. MVFR/IFR conditions are expected to return this evening/early tonight. && .MARINE... (Today through Thursday) Issued at 1032 AM PDT Sat May 25 2024 Fresh northwest breeze over the outer waters persists through the weekend creating hazardous conditions for small crafts. Fresh to strong northwest and onshore winds across the coastal waters and bays during the afternoons by early to mid next week. Wave heights beginning to increase mid-work week up to 11-13 feet. Otherwise mostly quiet marine conditions through the forecast period. && .MTR WATCHES/WARNINGS/ADVISORIES...
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CA...None. PZ...Small Craft Advisory until 9 PM PDT this evening for Mry Bay. Small Craft Advisory until 3 AM PDT Sunday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory from 3 PM to 9 PM PDT Sunday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory until 3 AM PDT Sunday for Pigeon Pt to Pt Pinos 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm. Small Craft Advisory until 3 AM PDT Monday for Pt Arena to Pt Reyes 10-60 NM. Small Craft Advisory until 3 AM PDT Monday for Pigeon Pt to Pt Pinos 10-60 NM.
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&& $$ SHORT TERM...Behringer LONG TERM....Behringer AVIATION...SO MARINE...SO Visit us at www.weather.gov/sanfrancisco Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/nwsbayarea www.twitter.com/nwsbayarea www.youtube.com/nwsbayarea