Santa Clara County, CA Weather Alerts
Every National Weather Service alert issued for Santa Clara County, California, pushed to your phone within moments — county code CAC085, forecast zone 4 zones (CAZ513, CAZ508, CAZ512, CAZ514). Free with StormCast.
Download on Google PlayHow the NWS identifies Santa Clara County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches CAC085 directly rather than matching on place names, which is why an alert arrives whether you are in Alviso or anywhere else in the county.
NWS County Code
CAC085
Forecast Zones
4 zones (CAZ513, CAZ508, CAZ512, CAZ514)
Forecast Office
Monterey (MTR)
Radar Station
KMUX
Towns covered in Santa Clara County
An NWS alert for Santa Clara County applies to all 21 of these communities. You do not need a separate alert for each one.
River gauges in and around Santa Clara County
StormCast tracks 12 gauges near Santa Clara County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- Los Gatos Creek above Bascom Avenue
- Canoas Creek at Almaden Expressway
- Guadalupe River (CA) above Almaden Expressway
- Los Gatos Creek at Lincoln Avenue
- Ross Creek at Cherry Avenue
- Canoas Creek at Dow Drive
- Smith Creek abv Elam Ave
- Guadalupe River (CA) above Branham Lane
- Los Gatos Creek at Kirk Dam Weir
- San Tomas Aquino Creek above Williams Road
- Coyote Creek at E William Street
- Guadalupe River (CA) at Fish Ladder above Blossom Hill
Current conditions
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Alert types issued for Santa Clara 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 →Santa Clara County weather alert questions
Which NWS forecast zone is Santa Clara County in?
Santa Clara County, California is NWS county code CAC085 and spans 4 forecast zones (CAZ513, CAZ508, CAZ512, CAZ514). Alerts for it are issued by the Monterey (MTR) Weather Forecast Office, and the nearest NEXRAD radar is KMUX.
Which towns in Santa Clara County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Santa Clara County covers every community inside it, including Alviso, Campbell, Coyote, Cupertino, Gilroy, Holy City, Los Altos, Los Gatos, Milpitas, Morgan Hill, Mount Hamilton, Mountain View, New Almaden, Palo Alto, Redwood Estates, San Jose, San Martin, Santa Clara, Saratoga, Stanford and Sunnyvale.
Are there river gauges in Santa Clara County?
Yes — StormCast monitors 12 river gauges in and around Santa Clara County, including Los Gatos Creek above Bascom Avenue, Canoas Creek at Almaden Expressway, Guadalupe River (CA) above Almaden Expressway. 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 Santa Clara County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for CAC085, the push notification goes out within moments — even with your screen off.