Mariposa County, CA Weather Alerts
Every National Weather Service alert issued for Mariposa County, California, pushed to your phone within moments — county code CAC043, forecast zone 4 zones (CAZ317, CAZ318, CAZ323, CAZ324). Free with StormCast.
Download on Google PlayHow the NWS identifies Mariposa County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches CAC043 directly rather than matching on place names, which is why an alert arrives whether you are in Catheys Valley or anywhere else in the county.
NWS County Code
CAC043
Forecast Zones
4 zones (CAZ317, CAZ318, CAZ323, CAZ324)
Forecast Office
Hanford (HNX)
Radar Station
KHNX
Towns covered in Mariposa County
An NWS alert for Mariposa County applies to all 8 of these communities. You do not need a separate alert for each one.
River gauges in and around Mariposa County
StormCast tracks 6 gauges near Mariposa 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 Mariposa 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 →Mariposa County weather alert questions
Which NWS forecast zone is Mariposa County in?
Mariposa County, California is NWS county code CAC043 and spans 4 forecast zones (CAZ317, CAZ318, CAZ323, CAZ324). Alerts for it are issued by the Hanford (HNX) Weather Forecast Office, and the nearest NEXRAD radar is KHNX.
Which towns in Mariposa County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Mariposa County covers every community inside it, including Catheys Valley, Coulterville, El Portal, Fish Camp, Hornitos, Mariposa, Midpines and Yosemite National Park.
Are there river gauges in Mariposa County?
Yes — StormCast monitors 6 river gauges in and around Mariposa County, including South Fork Merced River at Wawona, Gin Flat, Merced River at Pohono Bridge. 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 Mariposa County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for CAC043, the push notification goes out within moments — even with your screen off.