Active Weather Alerts
Special Weather Statement
Issued: 12:58 AM Apr. 12, 2026 – National Weather Service
...A LINE OF SHOWERS AND EMBEDDED STORMS WILL IMPACT CONTRA COSTA AND ALAMEDA COUNTIES UNTIL 630 PM PDT... At 558 PM PDT, Doppler radar was tracking a line of showers and embedded thunderstorms extending from the west Delta to near Hayward, moving northeast at 50 mph. HAZARD...Wind gusts up to 50 mph and heavy rainfall. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Oakland, Fremont, Hayward, Concord, Antioch, San Leandro, Livermore, San Ramon, Pleasanton, Union City, Walnut Creek, Pittsburg, Dublin, Newark, Danville, Martinez, Oakley, Pleasant Hill and Lafayette. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. Heavy rainfall may result in isolated flooding. Be sure to avoid flooded areas and regions prone to flooding. && MAX HAIL SIZE...0.00 IN; MAX WIND GUST...50 MPH
Special Marine Warning
Issued: 12:38 AM Apr. 12, 2026 – National Weather Service
The National Weather Service in San Francisco has issued a * Special Marine Warning for... San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge... San Francisco Bay South of the Bay Bridge... * Until 615 PM PDT. * At 538 PM PDT, Strong thunderstorms were located along a line from 16 NM northeast of Point Bonita to 10 NM east of Pillar Point, moving east at 25 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Mainly open waters of San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge and San Francisco Bay South of the Bay Bridge. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && MAX HAIL SIZE...0.00 IN; MAX WIND GUST...40 KTS
Small Craft Advisory
Issued: 9:36 PM Apr. 11, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...South winds 15 to 25 kt with gusts up to 35 kt and rough waters expected. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...Until 9 PM PDT this evening. * 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: 1:21 PM Apr. 11, 2026 – National Weather Service
...THUNDERSTORMS EXPECTED ACROSS THE COASTAL WATERS AND BAYS THROUGH THE WEEKEND... There will be a chance for thunderstorms through the weekend. The greatest potential will be Saturday afternoon through Sunday morning. Thunderstorms will bring the threat of cloud to ocean lightning, strong and erratic winds, brief heavy rain, small hail, and isolated waterspouts. These conditions can create hazardous ocean conditions, especially for smaller vessels. Mariners are advised to have a plan to reach safe harbor quickly if thunderstorms develop.
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