Union County, TN Weather Alerts
Every National Weather Service alert issued for Union County, Tennessee, pushed to your phone within moments — county code TNC173, forecast zone TNZ037. 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 TNC173 directly rather than matching on place names, which is why an alert arrives whether you are in Luttrell or anywhere else in the county.
NWS County Code
TNC173
Forecast Zone
TNZ037
Forecast Office
Morristown (MRX)
Radar Station
KMRX
Towns covered in Union County
An NWS alert for Union County applies to all 3 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, Tennessee is NWS county code TNC173 and forecast zone TNZ037. Alerts for it are issued by the Morristown (MRX) Weather Forecast Office, and the nearest NEXRAD radar is KMRX.
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 Luttrell, Maynardville and Sharps Chapel.
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 TNC173, the push notification goes out within moments — even with your screen off.