Weather Alerts For Los Altos, CA

Special Weather Statement National Weather Service San Francisco CA 417 PM PST Thu Dec 25 2025 Santa Clara Valley Including San Jose CA-Santa Cruz Mountains CA- San Francisco Peninsula Coast CA-San Francisco Bay Shoreline CA- 417 PM PST Thu Dec 25 2025 ...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN SANTA CRUZ... SOUTHEASTERN SAN MATEO AND NORTHWESTERN SANTA CLARA COUNTIES UNTIL 445 PM PST... At 417 PM PST, Doppler radar was tracking a strong thunderstorm 9 miles west of Boulder Creek, or 17 miles southwest of Saratoga, moving north at 35 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Sunnyvale, Redwood City, Mountain View, Palo Alto, Cupertino, Menlo Park, Los Altos, Los Altos Hills, Atherton, Woodside, Stanford, Portola Valley, West Menlo Park, Loyola and Emerald Lake Hills. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. &&

Flood Watch National Weather Service San Francisco CA 716 AM PST Thu Dec 25 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, Seaside, Greenfield, Watsonville, King City, San Jose, Oakland, Concord, Marina, Daly City, Blackhawk, Walnut Creek, Berkeley, Pleasanton, Pacifica, San Ramon, Live Oak, Monterey, Antioch, Fremont, San Francisco, Salinas, Santa Cruz, Boulder Creek, Livermore, Hayward, Cordoza Ridge, and Pittsburg 716 AM PST Thu Dec 25 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. &&

Closest strike: 12.11 miles Storms Approaching Stay alert and frequently check WeatherBug to see if storms are moving toward you. Be mindful that new storms can also form with little notice.

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 ACROSS MUCH OF COASTAL CALIFORNIA AND THE CENTRAL VALLEY SUMMARY An isolated risk for severe gusts/localized wind damage and perhaps a brief tornado will be possible today into this evening along much of the California Coast and portions of the Central Valley. 20z Update The previous outlook reasoning remains on track, and no changes were made with this update. A few thunderstorms had developed over the Sacramento Valley since 18z, where partial clearing was noted and weak buoyancy (200-300 J/kg) was present. Offshore, an increase in lightning was noted as the next upstream vorticity maximum moves towards the CA Coast. Although buoyancy will remain weak, stronger low/mid-level flow will become re-established later this afternoon/evening and will support an isolated risk of strong/severe wind gusts with a few stronger/sustained convective elements, and low-level hodographs will be sufficiently curved to conditionally support a brief tornado.