Land Management Forecasts
Issued by NWS San Francisco Bay Area, CA
Issued by NWS San Francisco Bay Area, CA
921 FNUS86 KMTR 021219 FWLMTR ECCDA Discussions National Weather Service SAN FRANCISCO BAY AREA 519 AM PDT Tue Sep 2 2025 ##################################################################### ## ## ## Discussions from the latest FWF below ## ## ## ##################################################################### ...Discussion from SFOFWFMTR... There is a 15-20% chance for isolated showers and thunderstorms starting in interior Napa Valley and continuing southwards down the Diablo Range and into interior southern Monterey Co through the early afternoon. Lightning, gusty and erratic winds, and perhaps a few hundredths of an inch of rain are possible. Outside of this threat, a gradual cooling trend starts today, with the marine layer improving over the next couple of nights. ...Discussion from SFOFWFEKA... Poor RH recoveries are expected in the higher elevations. Today, low RH values and triple digits are forecasted. In addition, isolated dry thunderstorms are also possible in the interior, primarily for Trinity County. Gusty and erratic outflow winds of 40 to 60 mph are possible with any storms that do form. Plume domination at ongoing fires is possible. Regardless of the thunder threat, instability will support a breezy day, which will elevate fire risk as conditions remain hot and dry. Wednesday through the end of the week gradual cooling is expected with highs mainly in the 80s by Saturday. ##################################################################### ## ## ## Complete a discussion for each ECCDA segment below ## ## When done click transmit, product sent as KMTRFWLMTR ## ## ## ##################################################################### ECC010-030030- St Helena ECC Dispatch- DISCUSSION FOR Marin and Sonoma and Napa Counties 519 AM PDT Tue Sep 2 2025 There is a 15-20% chance for isolated showers and thunderstorms starting in interior Napa Valley and continuing southwards down the Diablo Range and into interior southern Monterey Co through the early afternoon. Lightning, gusty and erratic winds, and perhaps a few hundredths of an inch of rain are possible. Outside of this threat, a gradual cooling trend starts today, with the marine layer improving over the next couple of nights. $$ ECC014-030030- Morgan Hill ECC Dispatch- DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties 519 AM PDT Tue Sep 2 2025 There is a 15-20% chance for isolated showers and thunderstorms starting in interior Napa Valley and continuing southwards down the Diablo Range and into interior southern Monterey Co through the early afternoon. Lightning, gusty and erratic winds, and perhaps a few hundredths of an inch of rain are possible. Outside of this threat, a gradual cooling trend starts today, with the marine layer improving over the next couple of nights. $$ ECC013-030030- Felton ECC Dispatch- DISCUSSION FOR Santa Cruz and San Mateo Counties 519 AM PDT Tue Sep 2 2025 There is a 15-20% chance for isolated showers and thunderstorms starting in interior Napa Valley and continuing southwards down the Diablo Range and into interior southern Monterey Co through the early afternoon. Lightning, gusty and erratic winds, and perhaps a few hundredths of an inch of rain are possible. Outside of this threat, a gradual cooling trend starts today, with the marine layer improving over the next couple of nights. $$ ECC018-030030- Monterey ECC Dispatch- DISCUSSION FOR Monterey and San Benito County 519 AM PDT Tue Sep 2 2025 There is a 15-20% chance for isolated showers and thunderstorms starting in interior Napa Valley and continuing southwards down the Diablo Range and into interior southern Monterey Co through the early afternoon. Lightning, gusty and erratic winds, and perhaps a few hundredths of an inch of rain are possible. Outside of this threat, a gradual cooling trend starts today, with the marine layer improving over the next couple of nights. $$