Flood Advisory — Union County, Tennessee
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Current Status
🌊 Active: Flood Advisory
Flood Advisory issued August 17 at 4:30PM EDT until August 17 at 7:30PM EDT by NWS Morristown TN
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Anderson County in east Tennessee... Central Campbell County in east Tennessee... Southwestern Grainger County in east Tennessee... West Central Jefferson County in east Tennessee... Knox County in east Tennessee... East Central Morgan County in east Tennessee... Southeastern Scott County in east Tennessee... Northwestern Sevier County in east Tennessee... Southwestern Union County in east Tennessee... * WHEN...Until 730 PM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. * ADDITIONAL DETAILS... - At 430 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Knoxville, Oak Ridge, Clinton, La Follette, Maynardville, Oliver Springs, Plainview and Jacksboro. - http://www.weather.gov/safety/flood
Effective August 17, 2026 at 4:30 PM ET · Expires August 17, 2026 at 7:30 PM ET
Event Details
Event Type
Flood Advisory
Severity
minor
Issued By
NWS Morristown TN
Expires
August 17, 2026 at 7:30 PM ET
Last Checked
2 hours ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Also In Effect For
This same Flood Advisory also covers:
Other Active Alerts in Tennessee
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Get Flood Advisory Alerts for Union County
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Frequently Asked Questions
What does a Flood Advisory mean for Union County, Tennessee?
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Is this Flood Advisory currently active?
Yes — this alert is active as of our last check (2 hours ago). It's set to expire August 17, 2026 at 7:30 PM ET.
How do I get notified about Flood Advisory alerts for Union County?
Download StormCast free on Google Play and set Union County, Tennessee as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flood Advisory is also in effect for Campbell County, Grainger County, Jefferson County, Morgan County, Scott County.