Severe Thunderstorm Warning — Johnson County, Tennessee
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Current Status
⛈️ Active: Severe Thunderstorm Warning
Severe Thunderstorm Warning issued August 11 at 8:49PM EDT until August 11 at 9:30PM EDT by NWS Morristown TN
At 849 PM EDT, severe thunderstorms were located along a line extending from near Lansing to Reese to Hampton, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Elizabethton, Mountain City, Hampton, Trade, Roane Mountain State Park, Doeville, Neva, Hampton Creek Cove State Park, Elk Mills, and Roan Mountain.
Effective August 11, 2026 at 8:49 PM ET · Expires August 11, 2026 at 9:30 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Morristown TN
Expires
August 11, 2026 at 9:30 PM ET
Last Checked
1 hour ago
What To Do
📋 Official NWS Guidance
For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Other Active Alerts in Tennessee
Flash Flood Warning
Severe Thunderstorm Watch
Flood Advisory
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Severe Thunderstorm Watch
Get Severe Thunderstorm Warning Alerts for Johnson County
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Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for Johnson County, Tennessee?
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Is this Severe Thunderstorm Warning currently active?
Yes — this alert is active as of our last check (1 hour ago). It's set to expire August 11, 2026 at 9:30 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Johnson County?
Download StormCast free on Google Play and set Johnson 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.