Weather Alerts For Fremont, CA

Flood Advisory National Weather Service San Francisco CA 248 AM PST Thu Dec 25 2025 Alameda CA-Contra Costa CA-Santa Clara CA- 248 AM PST Thu Dec 25 2025 ...FLOOD ADVISORY IN EFFECT UNTIL 545 AM PST EARLY THIS MORNING... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Western Alameda County in northern California... Central Contra Costa County in northern California... North Central Santa Clara County in northern California... * Until 545 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 248 AM PST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 0.5 inches of rain have fallen. - Some locations that will experience flooding include... San Jose, Oakland, Fremont, Hayward, Sunnyvale, Concord, Santa Clara, Berkeley, Richmond, San Leandro, Livermore, Mountain View, Alameda, San Ramon, Pleasanton, Union City, Milpitas, Walnut Creek, Pittsburg and Dublin. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. &&

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 1236 AM PST Thu Dec 25 2025 Marin Coastal Range-North Bay Interior Mountains-North Bay Interior Valleys-San Francisco Bay Shoreline-East Bay Interior Valleys-Santa Cruz Mountains-Santa Clara Valley Including San Jose-Eastern Santa Clara Hills-East Bay Hills-Southern Salinas Valley/Arroyo Seco and Lake San Antonio-Mountains of San Benito County And Interior Monterey County including Pinnacles National Park- 1236 AM PST Thu Dec 25 2025 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...South winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...The East Bay and San Francisco Bay Shoreline, The Santa Clara Valley and Eastern Hills, The Marin Hills, The Santa Cruz Mountains, Most of San Benito County and the Cholame Hills in Southeast Monterey County, North Bay Interior Mountains, North Bay Interior Valleys, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...Until 10 AM PST this morning. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Strong winds may move loose debris, result in minor damage property, and cause sporadic power outages. Travel could become difficult, especially for high profile vehicles. The combination of wind and moist soils will increase the risk for downed trees. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. &&

Flood Watch National Weather Service San Francisco CA 1034 PM PST Wed Dec 24 2025 San Francisco-San Francisco Bay Shoreline-San Francisco Peninsula Coast-East Bay Interior Valleys-Santa Cruz Mountains-Santa Clara Valley Including San Jose-Eastern Santa Clara Hills-East Bay Hills-Southern Salinas Valley/Arroyo Seco and Lake San Antonio- Santa Lucia Mountains and Los Padres National Forest-Mountains of San Benito County And Interior Monterey County including Pinnacles National Park-Northern Salinas Valley/Hollister Valley and Carmel Valley-Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast- Including the cities of Day Valley, Scotts Valley, Santa Cruz, Berkeley, Monterey, Blackhawk, Antioch, Cordoza Ridge, Walnut Creek, San Ramon, Greenfield, Live Oak, King City, Pittsburg, Oakland, Concord, Fremont, Seaside, Boulder Creek, San Jose, Watsonville, Marina, San Francisco, Livermore, Hayward, Pacifica, Daly City, Pleasanton, and Salinas 1034 PM PST Wed Dec 24 2025 ...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY EVENING... * WHAT...Flooding caused by excessive rainfall continues to be possible from multiple lines of showers and thunderstorms, strong at times, moving across the area. * WHERE...San Francisco County, San Mateo Peninsula, East Bay, South Bay, and Central Coast * WHEN...Through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low water crossings may become flooded. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Numerous lines of showers and thunderstorms will move across the Bay Area and Central Coast through Friday evening. An additional 1-2" of rain is expected across the interior with locally higher totals between 2-3" across the Santa Cruz Mountains and up to 3" across the Santa Lucia Range. Flooding potential will increase with each successive round of rain. Sharp rises in smaller creeks and streams are expected with at least some potential for minor flooding in mainstream rivers. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. &&

There is a Marginal Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ALONG MUCH OF THE CALIFORNIA COAST AND PORTIONS OF THE CENTRAL VALLEY SUMMARY An isolated risk for severe/damaging gusts and perhaps a brief tornado will exist through tonight along much of the California Coast and portions of the Central Valley. 01Z Update Multiple bands of convection look likely this evening into the early morning hours as a deepening surface low approaches the California coast. The strongest convective elements within this first band, currently approaching the San Francisco Bay area, will be capable of producing gusty winds as it moves inland. Wind fields will strengthen overnight in response to the approaching low. This will maintain sufficient low-level theta-e advection to support modest low-level instability through Christmas morning. Numerical guidance this evening indicates a more intense band of convection will approach the central and northern California coast in the 08-12Z (12-4AM PT) window, quickly moving into northern portions of the Central Valley. Given the modest instability and strong wind fields, isolated strong wind gusts and a brief tornado will be possible overnight, especially along the coast. Elsewhere along the California coast, low-level moist advection will persist through the night supporting localized convective development. For the same reasons listed above, an isolated strong wind gust or brief tornado would be possible with these convective elements. Central Valley Thunderstorms have developed this afternoon across portions of the Central Valley near Sacramento. Surface-based instability around 500 J/kg within a strongly sheared environment will support an isolated wind threat. Should convective elements become more cellular, the low-level wind fields would support a brief tornado, especially in areas where surface-based instability can be realized. This activity will lift generally northward across the Central Valley through this evening.