San Francisco, CA Severe Weather Alertstar_ratehome

...THUNDERSTORMS EXPECTED ACROSS THE COASTAL WATERS AND BAYS
THROUGH SUNDAY EVENING...

There is a chance for thunderstorms through Sunday evening across
the coastal waters and bays. 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.