Active Weather Alerts
Small Craft Advisory
Issued: 9:50 PM Apr. 10, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM TO 9 PM PDT SATURDAY... * WHAT...South winds 20 to 25 kt with gusts up to 30 kt and rough waters expected. * WHERE...San Francisco Bay South of the Bay Bridge. * WHEN...From 3 PM to 9 PM PDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Special Weather Statement
Issued: 9:45 PM Apr. 10, 2026 – National Weather Service
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN CONTRA COSTA COUNTY UNTIL 315 PM PDT... At 245 PM PDT, Doppler radar was tracking a strong thunderstorm 5 miles north of Knightsen, or 5 miles northeast of Oakley, moving north at 25 mph. HAZARD...Wind gusts up to 30 mph and half inch 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... Bethel Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. If outdoors, consider seeking shelter inside a building. && MAX HAIL SIZE...0.50 IN; MAX WIND GUST...30 MPH
Marine Weather Statement
Issued: 5:47 AM Apr. 10, 2026 – National Weather Service
...TWO ROUNDS OF THUNDERSTORMS EXPECTED ACROSS THE COASTAL WATERS AND BAYS FRIDAY THROUGH THE WEEKEND... Two rounds of thunderstorms are expected to pass through the coastal waters and bays. The first round is expected to arrive Friday morning and last through the day, with the second round expected to pass through Saturday afternoon into Sunday. These thunderstorms bring the risk of frequent lightning, locally gusty winds, localized heavy rainfall, accumulating small hail, and waterspouts. Mariners should note the expected forecast and have a plan to reach safe harbor quickly if thunderstorms develop.
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