Flash Flood Warning — Jefferson County, Tennessee
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 13 at 6:09PM EDT until August 13 at 9:00PM EDT by NWS Morristown TN
FFWMRX The National Weather Service in Morristown has issued a * Flash Flood Warning for... Northwestern Cocke County in east Tennessee... Southern Hamblen County in east Tennessee... East Central Jefferson County in east Tennessee... * Until 900 PM EDT. * At 609 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 2.5 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Newport, Dandridge, White Pine, Baneberry and Bybee. This includes the following highways... Interstate 81 in Tennessee between mile markers 1 and 5. Interstate 40 in Tennes
Effective August 13, 2026 at 6:09 PM ET · Expires August 13, 2026 at 9:00 PM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Morristown TN
Expires
August 13, 2026 at 9:00 PM ET
Last Checked
1 minute 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 Flash Flood Warning also covers:
Other Active Alerts in Tennessee
Flash Flood Warning
Flood Advisory
Flash Flood Warning
Flood Advisory
Flood Advisory
Flood Advisory
Get Flash Flood Warning Alerts for Jefferson County
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Frequently Asked Questions
What does a Flash Flood Warning mean for Jefferson County, Tennessee?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (1 minute ago). It's set to expire August 13, 2026 at 9:00 PM ET.
How do I get notified about Flash Flood Warning alerts for Jefferson County?
Download StormCast free on Google Play and set Jefferson 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 Flash Flood Warning is also in effect for Cocke County, Hamblen County.