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Area Forecast Discussion
Issued by NWS San Francisco Bay Area, CA
Issued by NWS San Francisco Bay Area, CA
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273 FXUS66 KMTR 170623 AFDMTR Area Forecast Discussion National Weather Service San Francisco CA 1123 PM PDT Fri Aug 16 2024 ...New AVIATION... .SYNOPSIS... Issued at 1102 AM PDT Fri Aug 16 2024 Seasonal to slightly cooler than normal temperatures will continue through the weekend into next week. Increased coverage of early morning marine layer stratus, fog and drizzle is likely this weekend. Less than 10% chance for thunder on Saturday. && .SHORT TERM... (This afternoon through Saturday) Issued at 1102 AM PDT Fri Aug 16 2024 Clear skies this afternoon but clouds will return tonight along the coast. With the approaching trough, the marine layer will deepen and there will be a stronger onshore push. Therefore, expect clouds to push further inland compared to the last few days. The low pressure system over Northwest California, will bring some moisture and possible light showers on Saturday over the northern parts of our region, mostly over the northern zones of our waters. Models do show some instability associated with this low, so there is a possible chance for thunderstorms, but chances are very low (less than 10% chance). Temperatures tonight will see 1-3 degree difference compared to last night but minimums will stay in the 50s to low 60s. Maximum temperatures for Saturday will be on the cooler side compared to the last few days as we will see a 4-10 degree drop. Some of temperatures will be below normal as inland areas will see mostly 70s and mid 80s, with higher terrains seeing low 90s. Coastal areas will see low 60s, high 50s. && .LONG TERM... (Saturday night through next Thursday) Issued at 1102 AM PDT Fri Aug 16 2024 Temperatures will start to slowly increase on Sunday and will push some temperatures to closer to seasonal on Monday as the upper-level ridge that builds over central CONUS will create a OMEGA block keeping us under a troughing pattern. Maximum temperatures will start to return to 80s to 90s inland, and 60s along the coast, with each day showing differences by 1-3 degrees. Therefore, relatively similar weather conditions through most of first half of the work week. && .AVIATION... (06Z TAFS) Issued at 1105 PM PDT Fri Aug 16 2024 VFR conditions will give way to MVFR to IFR conditions eventually as the edge of low marine stratus offshore slowly moves closer to the coastline after midnight. As the low clouds fill in through the remainder of the overnight, MVFR to IFR will persist through late morning Saturday before clearing out. Vicinity of SFO...MVFR/IFR ceilings are expected after midnight and will persist through mid/late morning before clearing out for the afternoon and evening. Gusty onshore winds can be expected during the afternoon and early evening once again. SFO Bridge Approach...Similar to SFO. Monterey Bay Terminals...MVFR/IFR low stratus ceilings are slow to develop once again but will eventually fill in over KMRY and KSNS after midnight and persist through mid/late morning Saturday with patchy light drizzle possible. Once clouds clear out for the remainder of the afternoon, low stratus cloud deck should return earlier Saturday evening than the previous few nights. && .MARINE... (Tonight through next Wednesday) Issued at 444 PM PDT Fri Aug 16 2024 An upper level low pressure system will dig southward tonight and Saturday morning off the Pacific Northwest and far northern California coast. This low will become nearly stationary through the middle of next week. Winds will ease over the coastal waters this weekend except remain breezy over the San Francisco Bay during the afternoon and evening. && .MTR WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...Small Craft Advisory from 9 AM to 9 PM PDT Saturday for SF Bay N of Bay Bridge. Small Craft Advisory until 3 AM PDT Saturday for Pt Pinos to Pt Piedras Blancas 0-10 nm. && $$ SHORT TERM...SO LONG TERM....SO AVIATION...JM MARINE...Canepa 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