Tuolumne County, CA Weather Alerts
Every National Weather Service alert issued for Tuolumne County, California, pushed to your phone within moments — county code CAC109, forecast zone 4 zones (CAZ137, CAZ139, CAZ138, CAZ161). Free with StormCast.
Download on Google PlayHow the NWS identifies Tuolumne County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches CAC109 directly rather than matching on place names, which is why an alert arrives whether you are in Big Oak Flat or anywhere else in the county.
NWS County Code
CAC109
Forecast Zones
4 zones (CAZ137, CAZ139, CAZ138, CAZ161)
Forecast Office
Sacramento (STO)
Radar Station
KDAX
Towns covered in Tuolumne County
An NWS alert for Tuolumne County applies to all 16 of these communities. You do not need a separate alert for each one.
River gauges in and around Tuolumne County
StormCast tracks 1 gauge near Tuolumne County. Set a flood-stage alert on any of them to get notified before the water reaches you.
Current conditions
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Alert types issued for Tuolumne 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 →Tuolumne County weather alert questions
Which NWS forecast zone is Tuolumne County in?
Tuolumne County, California is NWS county code CAC109 and spans 4 forecast zones (CAZ137, CAZ139, CAZ138, CAZ161). Alerts for it are issued by the Sacramento (STO) Weather Forecast Office, and the nearest NEXRAD radar is KDAX.
Which towns in Tuolumne County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Tuolumne County covers every community inside it, including Big Oak Flat, Chinese Camp, Columbia, Dardanelle, Groveland, Jamestown, Long Barn, Mi Wuk Village, Moccasin, Pinecrest, Sonora, Soulsbyville, Standard, Strawberry, Tuolumne and Twain Harte.
Are there river gauges in Tuolumne County?
Yes — StormCast monitors 1 river gauge in and around Tuolumne County, including North Fork Stanislaus River near Avery. 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 Tuolumne County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for CAC109, the push notification goes out within moments — even with your screen off.