Land Management Forecasts
Issued by NWS San Francisco Bay Area, CA
Issued by NWS San Francisco Bay Area, CA
304 FNUS86 KMTR 072153 FWLMTR ECCDA Discussions National Weather Service SAN FRANCISCO BAY AREA 253 PM PDT Sun Sep 7 2025 ##################################################################### ## ## ## Discussions from the latest FWF below ## ## ## ##################################################################### ...Discussion from SFOFWFMTR... Onshore flow is increasing, leading to cooler conditions and better humidities. A weak cold front will bring widespread chances for light rain Monday and into Tuesday with lingering shower activity lasting through late Thursday. Most measurable rainfall will be light, with less than a tenth of an inch expected across much of the district. The exceptions look to be the higher elevations in the North Bay counties, but these areas look to stay under 2 tenths of rainfall accumulation. Non- zero chances for thunderstorms occur along the initial frontal passages in the North Bay, but these chances increase in the post frontal environment. Tuesday afternoon show a 5 to 15% chance for storms across the Bay Area, and Wednesday afternoon shows 10% across the Northern portions of the North Bay counties. ...Discussion from SFOFWFEKA... No significant changes to the previous forecast. Dry weather and seasonable temperatures are expected today. Winds will generally remain light and terrain driven except for stronger diurnal westerly breezes in the valleys of Trinity, Lake and Mendocino Counties. Cooler weather, higher humidity and a chance for wetting rain will arrive with an upper level low on Monday. There may even be a few wet thunderstorms with the rain on Monday. An enhanced breezy west is forecast Monday late afternoon and evening over the higher terrain in Lake County where wind gusts over 25 mph are probable (50 to 80%). Additional light rain and a few wet thunderstorms will be possible for the remainder of the week, especially across the interior. A ridge brings warming and drying late in the week. ##################################################################### ## ## ## Complete a discussion for each ECCDA segment below ## ## When done click transmit, product sent as KMTRFWLMTR ## ## ## ##################################################################### ECC010-081000- St Helena ECC Dispatch- DISCUSSION FOR Marin and Sonoma and Napa Counties 253 PM PDT Sun Sep 7 2025 Onshore flow is increasing, leading to cooler conditions and better humidities. A weak cold front will bring widespread chances for light rain Monday and into Tuesday with lingering shower activity lasting through late Thursday. Most measurable rainfall will be light, with less than a tenth of an inch expected across much of the district. The exceptions look to be the higher elevations in the North Bay counties, but these areas look to stay under 2 tenths of rainfall accumulation. Non- zero chances for thunderstorms occur along the initial frontal passages in the North Bay, but these chances increase in the post frontal environment. Tuesday afternoon show a 5 to 15% chance for storms across the Bay Area, and Wednesday afternoon shows 10% across the Northern portions of the North Bay counties. $$ ECC014-081000- Morgan Hill ECC Dispatch- DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties 253 PM PDT Sun Sep 7 2025 Onshore flow is increasing, leading to cooler conditions and better humidities. A weak cold front will bring widespread chances for light rain Monday and into Tuesday with lingering shower activity lasting through late Thursday. Most measurable rainfall will be light, with less than a tenth of an inch expected across much of the district. The exceptions look to be the higher elevations in the North Bay counties, but these areas look to stay under 2 tenths of rainfall accumulation. Non- zero chances for thunderstorms occur along the initial frontal passages in the North Bay, but these chances increase in the post frontal environment. Tuesday afternoon show a 5 to 15% chance for storms across the Bay Area, and Wednesday afternoon shows 10% across the Northern portions of the North Bay counties. $$ ECC013-081000- Felton ECC Dispatch- DISCUSSION FOR Santa Cruz and San Mateo Counties 253 PM PDT Sun Sep 7 2025 Onshore flow is increasing, leading to cooler conditions and better humidities. A weak cold front will bring widespread chances for light rain Monday and into Tuesday with lingering shower activity lasting through late Thursday. Most measurable rainfall will be light, with less than a tenth of an inch expected across much of the district. The exceptions look to be the higher elevations in the North Bay counties, but these areas look to stay under 2 tenths of rainfall accumulation. Non- zero chances for thunderstorms occur along the initial frontal passages in the North Bay, but these chances increase in the post frontal environment. Tuesday afternoon show a 5 to 15% chance for storms across the Bay Area, and Wednesday afternoon shows 10% across the Northern portions of the North Bay counties. $$ ECC018-081000- Monterey ECC Dispatch- DISCUSSION FOR Monterey and San Benito County 253 PM PDT Sun Sep 7 2025 Onshore flow is increasing, leading to cooler conditions and better humidities. A weak cold front will bring widespread chances for light rain Monday and into Tuesday with lingering shower activity lasting through late Thursday. Most measurable rainfall will be light, with less than a tenth of an inch expected across much of the district. The exceptions look to be the higher elevations in the North Bay counties, but these areas look to stay under 2 tenths of rainfall accumulation. Non- zero chances for thunderstorms occur along the initial frontal passages in the North Bay, but these chances increase in the post frontal environment. Tuesday afternoon show a 5 to 15% chance for storms across the Bay Area, and Wednesday afternoon shows 10% across the Northern portions of the North Bay counties. $$