San Francisco County, CA Weather Alerts
Every National Weather Service alert issued for San Francisco County, California, pushed to your phone within moments — county code CAC075, forecast zone CAZ006. Free with StormCast.
Download on Google PlayHow the NWS identifies San Francisco County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches CAC075 directly rather than matching on place names, which is why an alert arrives whether you are in San Francisco or anywhere else in the county.
NWS County Code
CAC075
Forecast Zone
CAZ006
Forecast Office
Monterey (MTR)
Radar Station
KMUX
Towns covered in San Francisco County
An NWS alert for San Francisco County applies to all 1 of these communities. You do not need a separate alert for each one.
River gauges in and around San Francisco County
StormCast tracks 6 gauges near San Francisco County. Set a flood-stage alert on any of them to get notified before the water reaches you.
Current conditions
Loading current conditions…
Alert types issued for San Francisco County
Tornado
Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.
How tornado alerts work →Flooding
Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.
How flood alerts work →Winter
Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.
Winter warnings explained →Fire Weather
Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.
Fire weather alerts →Heat & Cold
Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.
Frost & freeze alerts →San Francisco County weather alert questions
Which NWS forecast zone is San Francisco County in?
San Francisco County, California is NWS county code CAC075 and forecast zone CAZ006. Alerts for it are issued by the Monterey (MTR) Weather Forecast Office, and the nearest NEXRAD radar is KMUX.
Which towns in San Francisco County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for San Francisco County covers every community inside it, including San Francisco.
Are there river gauges in San Francisco County?
Yes — StormCast monitors 6 river gauges in and around San Francisco County, including San Francisco Bay Tide gage, San Francisco Bay Alameda tide gage, Colma Creek at South San Francisco. You can set a flood-stage alert on any of them and get a push notification when the water rises.
How fast are alerts for San Francisco County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for CAC075, the push notification goes out within moments — even with your screen off.