Land Management Forecasts
Issued by NWS San Francisco Bay Area, CA
Issued by NWS San Francisco Bay Area, CA
459 FNUS86 KMTR 151223 FWLMTR ECCDA Discussions National Weather Service SAN FRANCISCO BAY AREA 523 AM PDT Tue Sep 15 2026 ##################################################################### ## ## ## Discussions from the latest FWF below ## ## ## ##################################################################### ...Discussion from SFOFWFMTR... Seasonal temperatures continue today then a deeper layer of cooler, below normal temperatures prevail Wednesday and Thursday. The marine layer has already deepened to between 1500 and almost 2000 feet and will continue to deepen to possibly mixing out during mid-week. This pattern will bring a return of good overnight humidity recoveries and overnight stratus. Friday through the weekend, weak ridging returns with seasonally warm temperatures and drier conditions expected. Breezy onshore winds anticipated to develop Wednesday into Thursday. Otherwise, diurnally breezy onshore winds continue across mountain gaps/passes, along the coast, and higher elevations this week. ...Discussion from SFOFWFEKA... High pressure building off the coast will bring a warming and drying trend across Northwest California through Today. Lighter northerly winds, compared to yesterday, are anticipated this afternoon. Wednesday afternoon or overnight an upper low has the potential to bring a few thunderstorms to Trinity county and northeastern Mendocino county. This will also bring slightly cooler temperatures and higher RH. A few thunderstorms are possible in northern Trinity on Thursday as well. Warm and dry weather is expected to return Friday and Saturday. ##################################################################### ## ## ## Complete a discussion for each ECCDA segment below ## ## When done click transmit, product sent as KMTRFWLMTR ## ## ## ##################################################################### ECC010-160030- St Helena ECC Dispatch- DISCUSSION FOR Marin and Sonoma and Napa Counties 523 AM PDT Tue Sep 15 2026 Seasonal temperatures continue today then a deeper layer of cooler, below normal temperatures prevail Wednesday and Thursday. The marine layer has already deepened to between 1500 and almost 2000 feet and will continue to deepen to possibly mixing out during mid-week. This pattern will bring a return of good overnight humidity recoveries and overnight stratus. Friday through the weekend, weak ridging returns with seasonally warm temperatures and drier conditions expected. Breezy onshore winds anticipated to develop Wednesday into Thursday. Otherwise, diurnally breezy onshore winds continue across mountain gaps/passes, along the coast, and higher elevations this week. $$ ECC014-160030- Morgan Hill ECC Dispatch- DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties 523 AM PDT Tue Sep 15 2026 Seasonal temperatures continue today then a deeper layer of cooler, below normal temperatures prevail Wednesday and Thursday. The marine layer has already deepened to between 1500 and almost 2000 feet and will continue to deepen to possibly mixing out during mid-week. This pattern will bring a return of good overnight humidity recoveries and overnight stratus. Friday through the weekend, weak ridging returns with seasonally warm temperatures and drier conditions expected. Breezy onshore winds anticipated to develop Wednesday into Thursday. Otherwise, diurnally breezy onshore winds continue across mountain gaps/passes, along the coast, and higher elevations this week. $$ ECC013-160030- Felton ECC Dispatch- DISCUSSION FOR Santa Cruz and San Mateo Counties 523 AM PDT Tue Sep 15 2026 Seasonal temperatures continue today then a deeper layer of cooler, below normal temperatures prevail Wednesday and Thursday. The marine layer has already deepened to between 1500 and almost 2000 feet and will continue to deepen to possibly mixing out during mid-week. This pattern will bring a return of good overnight humidity recoveries and overnight stratus. Friday through the weekend, weak ridging returns with seasonally warm temperatures and drier conditions expected. Breezy onshore winds anticipated to develop Wednesday into Thursday. Otherwise, diurnally breezy onshore winds continue across mountain gaps/passes, along the coast, and higher elevations this week. $$ ECC018-160030- Monterey ECC Dispatch- DISCUSSION FOR Monterey and San Benito County 523 AM PDT Tue Sep 15 2026 Seasonal temperatures continue today then a deeper layer of cooler, below normal temperatures prevail Wednesday and Thursday. The marine layer has already deepened to between 1500 and almost 2000 feet and will continue to deepen to possibly mixing out during mid-week. This pattern will bring a return of good overnight humidity recoveries and overnight stratus. Friday through the weekend, weak ridging returns with seasonally warm temperatures and drier conditions expected. Breezy onshore winds anticipated to develop Wednesday into Thursday. Otherwise, diurnally breezy onshore winds continue across mountain gaps/passes, along the coast, and higher elevations this week. $$