Land Management Forecasts
Issued by NWS San Francisco Bay Area, CA
Issued by NWS San Francisco Bay Area, CA
697 FNUS86 KMTR 290938 FWLMTR ECCDA Discussions National Weather Service SAN FRANCISCO BAY AREA 238 AM PDT Fri Aug 29 2025 ##################################################################### ## ## ## Discussions from the latest FWF below ## ## ## ##################################################################### ...Discussion from SFOFWFMTR... ...ELEVATED FIRE WEATHER THREAT DUE TO LOW RH AND MODERATE WESTERLY WINDS ACROSS THE EAST BAY HILLS SATURDAY AFTERNOON... A building ridge will compress the marine layer, increase temperatures, and decrease relative humidities beginning on Saturday. Daytime humidity retention will drop below 15% in the interior as temperatures reach the 90s. Elevated fire weather threats will develop in the interior mountains, particularly in the East Bay, as the hot and dry conditions combine with breezy and gusty afternoon winds. Similar conditions are expected Sunday with little to no improvement through the middle of the week. ...Discussion from SFOFWFEKA... Low daytime RH values in the teens and single digits, especially in Trinity, Lake, and northeastern Mendocino. Winds will mostly be diurnally and terrain driven, with locally breezy conditions over the ridges. Poor overnight recoveries with values in the mid 20`s to mid 30`s is forecast for the far interior ridges, while onshore marine moisture will continue to promote good RH recoveries for area below the inversion (<2500 feet). Some slight improvement in the minimum RH and recoveries are expected for Friday and through the weekend. An enhanced breezy west and southwest is forecast for Friday over the interior higher terrain where wind gusts over 20 mph are probable (50 to 70%), especially in Trinity and Lake counties. Higher chances for wind gusts over 20 mph exist for Lake and southern Mendocino County Saturday. ##################################################################### ## ## ## Complete a discussion for each ECCDA segment below ## ## When done click transmit, product sent as KMTRFWLMTR ## ## ## ##################################################################### ECC010-292145- St Helena ECC Dispatch- DISCUSSION FOR Marin and Sonoma and Napa Counties 238 AM PDT Fri Aug 29 2025 A building ridge will compress the marine layer, increase temperatures, and decrease relative humidities beginning on Saturday. Daytime humidity retention will drop below 15% in the interior as temperatures reach the 90s. Elevated fire weather threats will develop in the interior mountains, particularly in the East Bay, as the hot and dry conditions combine with breezy and gusty afternoon winds. Similar conditions are expected Sunday with little to no improvement through the middle of the week. $$ ECC014-292145- Morgan Hill ECC Dispatch- DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties 238 AM PDT Fri Aug 29 2025 ...ELEVATED FIRE WEATHER THREAT DUE TO LOW RH AND MODERATE WESTERLY WINDS ACROSS THE EAST BAY HILLS SATURDAY AFTERNOON... A building ridge will compress the marine layer, increase temperatures, and decrease relative humidities beginning on Saturday. Daytime humidity retention will drop below 15% in the interior as temperatures reach the 90s. Elevated fire weather threats will develop in the interior mountains, particularly in the East Bay, as the hot and dry conditions combine with breezy and gusty afternoon winds. Similar conditions are expected Sunday with little to no improvement through the middle of the week. $$ ECC013-292145- Felton ECC Dispatch- DISCUSSION FOR Santa Cruz and San Mateo Counties 238 AM PDT Fri Aug 29 2025 A building ridge will compress the marine layer, increase temperatures, and decrease relative humidities beginning on Saturday. Daytime humidity retention will drop below 15% in the interior as temperatures reach the 90s. Elevated fire weather threats will develop in the interior mountains, particularly in the East Bay, as the hot and dry conditions combine with breezy and gusty afternoon winds. Similar conditions are expected Sunday with little to no improvement through the middle of the week. $$ ECC018-292145- Monterey ECC Dispatch- DISCUSSION FOR Monterey and San Benito County 238 AM PDT Fri Aug 29 2025 A building ridge will compress the marine layer, increase temperatures, and decrease relative humidities beginning on Saturday. Daytime humidity retention will drop below 15% in the interior as temperatures reach the 90s. Elevated fire weather threats will develop in the interior mountains, particularly in the East Bay, as the hot and dry conditions combine with breezy and gusty afternoon winds. Similar conditions are expected Sunday with little to no improvement through the middle of the week. $$