Lyon County, IA Weather Alerts
Every National Weather Service alert issued for Lyon County, Iowa, pushed to your phone within moments — county code IAC119, forecast zone IAZ001. Free with StormCast.
Download on Google PlayHow the NWS identifies Lyon County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches IAC119 directly rather than matching on place names, which is why an alert arrives whether you are in Alvord or anywhere else in the county.
NWS County Code
IAC119
Forecast Zone
IAZ001
Forecast Office
Sioux Falls (FSD)
Radar Station
KFSD
Towns covered in Lyon County
An NWS alert for Lyon County applies to all 8 of these communities. You do not need a separate alert for each one.
River gauges in and around Lyon County
StormCast tracks 5 gauges near Lyon 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 Lyon 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 →Lyon County weather alert questions
Which NWS forecast zone is Lyon County in?
Lyon County, Iowa is NWS county code IAC119 and forecast zone IAZ001. Alerts for it are issued by the Sioux Falls (FSD) Weather Forecast Office, and the nearest NEXRAD radar is KFSD.
Which towns in Lyon County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Lyon County covers every community inside it, including Alvord, Doon, George, Inwood, Larchwood, Lester, Little Rock and Rock Rapids.
Are there river gauges in Lyon County?
Yes — StormCast monitors 5 river gauges in and around Lyon County, including Rock River at Rock Rapids, Little Rock River near George, Mud Creek (NW IA) near Lester. 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 Lyon County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for IAC119, the push notification goes out within moments — even with your screen off.