Sioux County, IA Weather Alerts
Every National Weather Service alert issued for Sioux County, Iowa, pushed to your phone within moments — county code IAC167, forecast zone IAZ012. Free with StormCast.
Download on Google PlayHow the NWS identifies Sioux County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches IAC167 directly rather than matching on place names, which is why an alert arrives whether you are in Alton or anywhere else in the county.
NWS County Code
IAC167
Forecast Zone
IAZ012
Forecast Office
Sioux Falls (FSD)
Radar Station
KFSD
Towns covered in Sioux County
An NWS alert for Sioux County applies to all 13 of these communities. You do not need a separate alert for each one.
River gauges in and around Sioux County
StormCast tracks 4 gauges near Sioux 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 Sioux 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 →Sioux County weather alert questions
Which NWS forecast zone is Sioux County in?
Sioux County, Iowa is NWS county code IAC167 and forecast zone IAZ012. Alerts for it are issued by the Sioux Falls (FSD) Weather Forecast Office, and the nearest NEXRAD radar is KFSD.
Which towns in Sioux County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Sioux County covers every community inside it, including Alton, Boyden, Chatsworth, Granville, Hawarden, Hospers, Hull, Ireton, Matlock, Maurice, Orange City, Rock Valley and Sioux Center.
Are there river gauges in Sioux County?
Yes — StormCast monitors 4 river gauges in and around Sioux County, including Floyd River at Alton, West Branch Floyd River near Struble, Floyd River near Struble. 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 Sioux County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for IAC167, the push notification goes out within moments — even with your screen off.