STORMWATCH: Track the rain on Live Doppler 7 HD radar maps
The National Weather Service is reporting swells up to 33 feet along the coast from San Francisco to Big Sur, and with swell periods of 17 seconds. The high surf warning is in effect until 5 p.m.
In Pacifica, waves are measuring at about 20 feet.
The big waves rolled in overnight at the Pacifica Pier. Some got so high, it promptied police to lock the gate to keep people out.
"I don't drive one hour up here to Pacifica to not see the water. Totally worth it!" said Philip Kessler, a Sunnyvale resident.
PHOTOS: Rainbows spotted around the Bay Area
The long time between sets of waves may create a false sense of security that it's safe to get close. However, that's not the case. There could suddenly be a huge wave coming right at you and could take you out, washing you back out into the sea.
The swimming conditions will be very dangerous with deadly rip currents. A Coastal Flood Advisory has been issued for 8 a.m. to noon for low lying areas in the North Bay.
In Oakland, a family and their two week old baby are ok after a huge eucalyptus tree fell over this morning, smashing into their apartment building on Fairmount Avenue.
The Bay Area saw rain, hail, lightning and high surf on overnight night. Our #abc7now community sent us video of flooding left behind at the Bayfair Mall in San Leandro after a huge downpour of rain and hail.
Share your weather photos and videos on Twitter, Instagram, or Facebook by tagging them #abc7now.
VIDEO: Watch your ABC7 AccuWeather forecast
Contra Costa County
San Mateo County
Santa Clara County
San Francisco: 10 free sand bags are available to each household until 2 p.m. Wednesday and from 8 a.m. to 2 p.m. each week Monday through Saturday at 2323 Cesar Chavez St., Gordon said. She said residents should enter at the Marin and Kansas Street gate.
If you see a storm drain clogged or other storm-related damage, you can report it by calling San Francisco's non-emergency line 3-1-1 (within SF only) or 415-701-2311. More information on SF311.org here.
SF311.org: Report Problems With Streets and Sidewalks
SF311.org: Report Problems With Sewer and Flooding Issues
Please provide the following with your service request: location where service is needed (address or intersection) and a description of problem (garbage on catchbasin, leaks, etc.)
Prepare NorCal: Disaster preparedness resources