Alert archive / Tennessee / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 182, NWS Morristown, TN

September 21, 2026Hamilton County, Marion County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Sep 21, 2026, 3:55 PM EDT for Hamilton County, Marion County, Tennessee. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 21, 2026, 3:55 PM EDT (19:55 UTC)
Expired
Sep 21, 2026, 4:30 PM EDT
In force
35 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Hamilton County, TN, Marion County, TN

The radar

The Northeast Alabama radar (KHTX), 68 km from the middle of the area, began a volume at 19:56 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.9 hours before the alert went out and 154 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2026-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1032 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2026-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1032 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
1415 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 21, 2:28 AM EDTSpecial Weather StatementMRXBledsoe, Rhea17 min
Sep 21, 7:49 AM EDTAreal Flood AdvisoryMRXLoudon, McMinn, Meigs, Monroe, Roane3 hr
Sep 21, 8:26 AM EDTSpecial Weather StatementMRXBradley49 min
Sep 21, 8:27 AM EDTSpecial Weather StatementMRXPolk48 min
Sep 21, 9:16 AM EDTSpecial Weather StatementMRXBradley59 min
Sep 21, 12:20 PM EDTAreal Flood AdvisoryMRXMonroe3 hr
Sep 21, 1:53 PM EDTSpecial Weather StatementMRXSequatchie52 min
Sep 21, 2:09 PM EDTSpecial Weather StatementMRXMorgan51 min
Sep 21, 2:26 PM EDTSevere Thunderstorm WarningMRXMorgan49 min
Sep 21, 2:49 PM EDTSpecial Weather StatementMRXRoane41 min
Sep 21, 3:00 PM EDTSpecial Weather StatementMRXCampbell45 min
Sep 21, 3:02 PM EDTSevere Thunderstorm WarningMRXCampbell, Claiborne43 min
Sep 21, 3:07 PM EDTSpecial Weather StatementMRXHamilton53 min
Sep 21, 3:32 PM EDTSpecial Weather StatementMRXUnion43 min
Sep 21, 3:53 PM EDTSpecial Weather StatementMRXMarion37 min
Sep 21, 4:27 PM EDTSpecial Weather StatementMRXHancock48 min
Sep 21, 4:39 PM EDTSpecial Weather StatementMRXMarion36 min
Sep 21, 5:54 PM EDTSpecial Weather StatementMRXSullivan51 min
Sep 21, 6:08 PM EDTSevere Thunderstorm WarningMRXSullivan52 min
Sep 21, 6:25 PM EDTSpecial Weather StatementMRXCarter50 min
Sep 21, 6:30 PM EDTAreal Flood AdvisoryMRXSullivan2 hr
Sep 21, 6:34 PM EDTSpecial Weather StatementMRXJohnson26 min
Sep 21, 6:38 PM EDTSpecial Weather StatementMRXWashington52 min
Sep 21, 6:55 PM EDTSpecial Weather StatementMRXJohnson35 min
Sep 21, 7:08 PM EDTAreal Flood AdvisoryMRXJohnson2 hr
Sep 21, 7:11 PM EDTAreal Flood AdvisoryMRXJohnson2 hr
Sep 21, 7:17 PM EDTSpecial Weather StatementMRXJohnson43 min
Sep 21, 7:34 PM EDTSpecial Weather StatementMRXCarter41 min
Sep 21, 7:43 PM EDTAreal Flood AdvisoryMRXCarter, Johnson2 hr
Sep 21, 1:57 PM EDTSpecial Weather StatementMRXWise48 min
Sep 21, 3:18 PM EDTSpecial Weather StatementMRXWise42 min
Sep 21, 4:09 PM EDTSpecial Weather StatementMRXCity of Norton51 min
Sep 21, 4:51 PM EDTSpecial Weather StatementMRXScott39 min
Sep 21, 6:44 PM EDTSpecial Weather StatementMRXWashington91 min
Sep 21, 7:32 PM EDTSpecial Weather StatementMRXSmyth43 min
Sep 21, 7:37 PM EDTFlash Flood WarningMRXWashington3 hr
Sep 21, 11:31 AM EDTSpecial Weather StatementMRXCherokee59 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2026Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.