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

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193 FXUS66 KMTR 270922 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 222 AM PDT Mon May 27 2024 ...New SYNOPSIS, SHORT TERM, LONG TERM... .SYNOPSIS...
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Issued at 131 AM PDT Mon May 27 2024 Warmer today as a warming trend continues through the week. Afternoon highs slightly above normal on tap for next weekend.
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&& .SHORT TERM...
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(Today and tonight) Issued at 131 AM PDT Mon May 27 2024 A Deja Vu Monday for most as far as high temperatures go. A few locations in the interior have the potential to be a couple of degrees warmer. Summer time ridge pattern in full effect to round out the holiday weekend. Marine layer remains intact through the day near coastal areas with the associated stratus retreating to the coastline by mid-to-late morning.
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&& .LONG TERM...
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(Tuesday through Sunday) Issued at 131 AM PDT Mon May 27 2024 Tranquil weather through the work week with stratus clearing to the coast each morning. A progressive, deep upper low traverses through the Pacific NW midweek to flatten the ridge a bit. This will keep any further warming at bay through the middle of the week, but isn`t expected to bring any other notable change to the weather. As this feature departs, the ridge builds back and a secondary warming trend continues into the weekend.
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&& .AVIATION... (00Z TAFS) Issued at 543 PM PDT Sun May 26 2024 The marine layer temperature inversion is strengthening, the depth is approx 1200 feet per Bodega Bay and Fort Ord profiler data. It`s currently clear /VFR/ except satellite imagery shows late afternoon stratus coverage over the southern Monterey Bay, Point Lobos and the Carmel Highlands. Coastal stratus /MVFR-IFR/ redevelops tonight and Memorial Day morning with some inland intrusion forecast across the Bay Area and the Salinas Valley. Patchy stratus and fog /LIFR-IFR/ developing in the North Bay late tonight and Memorial Day morning. VFR returning by late Memorial Day morning, except along the immediate coast patchy MVFR-IFR likely continuing through afternoon to early evening. Vicinity of SFO...Near high confidence VFR continues through the evening, then increasing probability of stratus developing with tempo IFR ceiling forecast 12-16z, VFR returning with an early mix out 16z Memorial Day morning. West wind 15 with a few gusts to 20 to 25 knots until 04z this evening, wind decreasing overnight to near 10 knots or less, then increasing to 15 knots with afternoon gusts to 20 to 25 knots Memorial Day afternoon and early evening. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...Satellite imagery shows stratus nearby over the southern Monterey Bay, with drier air aloft reaching across the bay from the northwest. High resolution models forecast an eddy circulation developing over the northern Monterey Bay, with a splitting wind flow across the northern Salinas Valley and Monterey Peninsula may help extend duration of VFR while drying out the current patch of stratus or hold conditions near neutral for eventual nocturnal stratus /IFR/ development beginning mid to late evening. Stratus /IFR/ otherwise is forecast tonight and Memorial Day morning. VFR returning by late Memorial Day morning, with low-moderate probability of an IFR stratus intrusion in the early evening. && .MARINE... (Tonight through next Saturday) Issued at 505 PM PDT Sun May 26 2024 Northwest breeze over the outer waters persists through Memorial Day weekend creating hazardous conditions for small crafts. Fresh to strong northwest and onshore winds across the coastal waters and bays during the afternoons mid next week. Wave heights beginning to increase by the middle of the work week up to 11 to 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 from 3 PM this afternoon to 3 AM PDT Wednesday for Pt Arena to Pt Reyes 0-10 nm. Small Craft Advisory from 3 AM Tuesday to 3 AM PDT Wednesday for Pt Reyes to Pigeon Pt 0-10 nm. Small Craft Advisory until 3 AM PDT Wednesday for Pt Arena to Pt Reyes 10-60 NM. Small Craft Advisory until 3 AM PDT early this morning for Pigeon Pt to Pt Pinos 10-60 NM. Small Craft Advisory from 9 AM Tuesday to 3 AM PDT Wednesday for Pigeon Pt to Pt Pinos 10-60 NM.
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&& $$ SHORT TERM...Behringer LONG TERM....Behringer AVIATION...Canepa 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