Weather
California Weather Alert: 21 MPH Winds, Coastal Flooding Nov 12-16
San Francisco, CA – Waves are building along the California coast as San Francisco prepares for a dramatic shift from 70 degree sunshine to soaking rain, gusty winds and hazardous surf. By Friday, the
By Grant Holloway · 2026-11-12T12:05:12.477Z
San Francisco, CA – Waves are building along the California coast as San Francisco prepares for a dramatic shift from 70 degree sunshine to soaking rain, gusty winds and hazardous surf. By Friday, the city's rain chance reaches 100%, while coastal flooding and high surf threaten portions of the Bay Area through the weekend.
According to the National Weather Service's San Francisco Bay Area office, a Coastal Flood Advisory is scheduled for Friday, November 13, from midnight until 4 p.m. PST. Another advisory covers Saturday from midnight until 6 p.m.
A High Surf Warning begins Friday at 6 p.m. and continues until Sunday at 4 a.m. A Beach Hazards Statement also takes effect Friday evening.
These overlapping alerts create growing concerns for beachgoers, coastal residents and travelers near exposed shorelines.
From 70 Degrees to Heavy Rain Friday Thursday offers a brief window of pleasant weather before conditions deteriorate.
San Francisco should reach approximately 70 degrees under partly sunny skies. Southwest winds could gust to 21 mph.
Temperatures fall toward 57 degrees Thursday night, with a 20% chance of rain after 3 a.m. Winds could gust to 32 mph.
By Friday morning, the weather changes considerably.
Forecasters expect rain and possible thunderstorms before 10 a.m., followed by additional showers and thunderstorms later in the day.
The rain chance reaches 100%, with precipitation totals between one half and three quarters of an inch possible.
Friday's high drops to 64 degrees, six degrees below Thursday's projected afternoon temperature.
South winds of 18 23 mph will shift west southwest during the afternoon, with gusts reaching 34 mph.
Drivers should prepare for wet pavement, reduced visibility and potentially difficult travel during heavier showers.
Dangerous Surf and Coastal Flooding Threaten Weekend Plans The most serious coastal concerns develop Friday evening into Saturday.
High surf can produce powerful breaking waves, dangerous currents and hazardous conditions along beaches and exposed coastal areas.
Coastal flooding may also affect low lying shoreline locations during vulnerable tidal periods.
Residents should avoid exposed rocks, jetties and beaches where unexpected waves could sweep people into the water.
Saturday brings some improvement inland, with partly sunny skies, a high near 65 degrees and a 30% chance of rain before 10 a.m.
However, dangerous surf conditions may continue even after rainfall decreases.
Sunday brings another round of unsettled weather, with a 60% chance of rain and a high near 64 degrees.
Rain continues Sunday night, followed by additional showers Monday.
San Francisco Five Day Weather Outlook: Nov. 12 16 Thursday, Nov. 12: Partly sunny, high 70°F. Southwest wind gusts to 21 mph. Thursday night low 57°F, with a 20% rain chance and gusts to 32 mph. Friday, Nov. 13: Rain and possible thunderstorms. High 64°F, rain chance 100%. Wind gusts to 34 mph. Friday night low 54°F, with a 70% rain chance. Saturday, Nov. 14: Partly sunny after a 30% morning rain chance. High 65°F. Saturday night low 54°F, with a 30% chance of rain after 4 a.m. Sunday, Nov. 15: Rain likely, with a 60% chance of precipitation. High 64°F. Rain continues Sunday night, low 54°F. Monday, Nov. 16: Rain likely, mainly before 10 a.m. Mostly cloudy, high 60°F. Monday night low 51°F, with a slight chance of rain before 10 p.m. Looking beyond Monday, Tuesday could bring a warmer break near 80 degrees before rain chances return Tuesday night and Wednesday.
With Thanksgiving approaching, residents should monitor changing Pacific storm patterns. No specific Thanksgiving storm or snow event is established in the supplied local outlook.
Are you seeing stronger waves along the Bay Area coastline, or preparing for Friday's rain? Tell us what conditions look like in your neighborhood.