Active Weather Alerts
Special Weather Statement
Issued: 8:01 AM Nov. 17, 2025 – National Weather Service
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN SAN MATEO COUNTY UNTIL 1230 AM PST... At 1201 AM PST, Doppler radar was tracking a strong thunderstorm over El Granada, or 7 miles south of Pacifica, moving northeast at 35 mph. HAZARD...Landspouts, wind gusts up to 40 mph, and half inch size hail. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... San Francisco, Daly City, San Mateo, Redwood City, South San Francisco, San Bruno, Pacifica, Foster City, Burlingame, San Carlos, Belmont, Millbrae, Half Moon Bay, Hillsborough, Highlands-Baywood Park, El Granada, Brisbane, Colma, Highlands and Montara. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. If outdoors, consider seeking shelter inside a building. && LANDSPOUT...POSSIBLE; MAX HAIL SIZE...0.50 IN; MAX WIND GUST...40 MPH
Flood Advisory
Issued: 7:54 AM Nov. 17, 2025 – National Weather Service
...FLOOD ADVISORY IN EFFECT UNTIL 3 AM PST MONDAY... * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, northwestern Alameda and western Contra Costa. * WHEN...Until 300 AM PST. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1154 PM 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. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Oakland, Concord, Berkeley, Richmond, San Leandro, Mountain View, Alameda, San Ramon, Walnut Creek, Pittsburg, Dublin, Danville, Martinez, Pleasant Hill, San Pablo, Lafayette, El Cerrito, Castro Valley, Hercules and Albany. - 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. &&
Small Craft Advisory
Issued: 4:26 AM Nov. 17, 2025 – National Weather Service
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PST MONDAY... * WHAT...West winds 15 to 25 kt with gusts up to 35 kt and rough waters. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...Until 9 PM PST Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Marine Weather Statement
Issued: 2:56 AM Nov. 17, 2025 – National Weather Service
...A SLIGHT CHANCE OF THUNDERSTORMS TONIGHT AND INTO MONDAY MORNING... A slight chance of thunderstorms will spread across the coastal waters and bays tonight into Monday morning with the highest probabilities north of Pigeon Point. Any thunderstorms that form will be capable of producing local gale force winds and rough seas, lightning, heavy rainfall with reduced visibility, and waterspouts.
Local Radar