San Francisco, Calif. – Tropical moisture pushing inland from the Pacific is expected to bring increasing thunderstorm chances to the Bay Area and Northern California through Monday. Early radar shows the heaviest storms offshore, but forecasters warn conditions will grow more unstable over land as the day progresses.
According to the National Weather Service in Monterey, convection remains strongest over the waters this morning, but inland areas including San Francisco, San Jose, and Sacramento could see scattered thunderstorms by this afternoon. Lightning, brief downpours, and gusty winds are possible, especially in the interior valleys.
Commuters on major corridors such as I-80 toward Sacramento and U.S. 101 from San Jose to Santa Rosa may encounter sudden slick roads and reduced visibility during passing storms. Outdoor events and construction projects could also be impacted by lightning risk. Emergency managers advise residents to move indoors if thunder is heard and avoid high terrain until storms subside.
While rain totals are not expected to be widespread, localized downpours could briefly overwhelm drainage in urban areas. The storm threat will linger into Monday night, with additional advisories possible if storm cells intensify inland.
Thunderstorm chances remain in place until late tonight, with the National Weather Service urging residents to monitor updates for changing conditions.
