Weather Alerts For Loma Mar, CA

Flood Advisory National Weather Service San Francisco CA 348 AM PST Thu Dec 25 2025 San Francisco CA-San Mateo CA- 348 AM PST Thu Dec 25 2025 ...FLOOD ADVISORY NOW IN EFFECT UNTIL 530 AM PST EARLY THIS MORNING... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...San Francisco County in northern California... San Mateo County in northern California... * Until 530 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 348 AM PST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 0.5 and 4 inches of rain have fallen. - Some locations that will experience flooding include... San Francisco, Daly City, San Mateo, Redwood City, South San Francisco, San Bruno, Pacifica, Menlo Park, Foster City, Burlingame, San Carlos, Belmont, Millbrae, Half Moon Bay, Hillsborough, Atherton, Woodside, Highlands-Baywood Park, El Granada and Portola Valley. - 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. &&

A Weather Alert has been issued for a nearby area. While your current location is outside of the impacted area, please stay alert and monitor weather conditions. BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service San Francisco CA 311 AM PST Thu Dec 25 2025 The National Weather Service in San Francisco has issued a * Flash Flood Warning for... East Central San Mateo County in northern California... Northwestern Santa Clara County in northern California... * Until 615 AM PST. * At 311 AM PST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.2 and 1 inch of rain has fallen. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Jose, Fremont, Sunnyvale, Santa Clara, Mountain View, Milpitas, Palo Alto, Cupertino, Campbell, Menlo Park, Saratoga, Los Gatos, Los Altos, East Palo Alto, Los Altos Hills, Woodside, Fruitdale, Buena Vista, Sunol-Midtown and Rancho Rinconada Cdp. 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. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. &&

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 FOR MUCH OF THE CALIFORNIA COAST AND PORTIONS OF THE CENTRAL VALLEY SUMMARY Thunderstorms with potential to produce marginally severe wind gusts and perhaps a brief tornado will be possible on Thursday along much of the California Coast and portions of the Central Valley. Synopsis A highly amplified pattern will persist across the US as a deep trough over the eastern Pacific is maintained and a ridge builds over the central US. A series of embedded shortwave troughs within the eastern Pacific trough will impact the West Coast on Christmas and Christmas night. California The first of these shortwave troughs will be moving across the region at the start of the forecast period, bringing with it a band of strongly forced convection, likely located across portions of the central coast of California into the Central Valley. As the shortwave trough takes on an increasingly negative tilt, a 50-60 knot southerly low-level jet will be maintained allowing for sufficient low-level theta-e advection to support a modest 100-300 J/kg of surface-based CAPE. As the convective band interacts with this strong low-level kinematic field, gusty/damaging convective winds may be realized at the surface, particularly with the stronger convective elements. Forecast low-level hodographs ahead of this convective line feature sufficient low-level curvature to support a brief tornado should any convective element realize true surface-based buoyancy. As the morning progresses, the aforementioned shortwave trough will lift north then northwest within the broader cyclonic flow across the eastern Pacific whereas the band of convection slowly advances south and east. By midday, the low-level wind fields should weaken sufficiently in response to the departing shortwave trough to reduce the potential of damaging winds/tornadoes across far southern California. By mid-afternoon, another shortwave trough will approach the central and northern California coast. In response, the low-level wind fields will once again strengthen, albeit perhaps not to the extent as with the morning wave. Another band or bands of strongly forced convection are expected to develop across the eastern Pacific and approach coastal areas of central California after 00Z (4 PM PT). As was the case with the morning convection, the strongest convective elements may be capable of mixing down the stronger winds aloft resulting in the potential for isolated strong thunderstorm winds.