Union County, OH Weather Alerts
Every National Weather Service alert issued for Union County, Ohio, pushed to your phone within moments — county code OHC159, forecast zone OHZ045. Free with StormCast.
Download on Google PlayHow the NWS identifies Union County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches OHC159 directly rather than matching on place names, which is why an alert arrives whether you are in Broadway or anywhere else in the county.
NWS County Code
OHC159
Forecast Zone
OHZ045
Forecast Office
Wilmington (ILN)
Radar Station
KILN
Towns covered in Union County
An NWS alert for Union County applies to all 8 of these communities. You do not need a separate alert for each one.
Current conditions
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Alert types issued for Union 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 →Union County weather alert questions
Which NWS forecast zone is Union County in?
Union County, Ohio is NWS county code OHC159 and forecast zone OHZ045. Alerts for it are issued by the Wilmington (ILN) Weather Forecast Office, and the nearest NEXRAD radar is KILN.
Which towns in Union County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Union County covers every community inside it, including Broadway, Irwin, Magnetic Springs, Marysville, Milford Center, Raymond, Richwood and Unionville Center.
Does StormCast monitor flooding in Union County?
Yes. StormCast tracks NWS flood watches, flash flood warnings and river flood warnings for Union County, alongside 12,700+ USGS river gauges nationwide.
How fast are alerts for Union County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for OHC159, the push notification goes out within moments — even with your screen off.