Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 62, NWS Morristown, TN

April 23, 2025McMinn County, Monroe County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Apr 23, 2025, 6:06 PM EDT for McMinn County, Monroe County, Tennessee. It was in force for 19 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
Apr 23, 2025, 6:06 PM EDT (22:06 UTC)
Expired
Apr 23, 2025, 6:25 PM EDT
In force
19 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties McMinn County, TN, Monroe County, TN

The radar

The Knoxville radar (KMRX), 124 km from the middle of the area, began a volume at 22:05 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, 10.1 hours before the alert went out and 210 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 2025-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 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 2025-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
85 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
774 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 3:06 PM EDTSpecial Weather StatementMRXBledsoe24 min
Apr 23, 3:29 PM EDTSpecial Weather StatementMRXBledsoe31 min
Apr 23, 3:57 PM EDTSpecial Weather StatementMRXBledsoe, Rhea48 min
Apr 23, 4:25 PM EDTSpecial Weather StatementMRXMarion50 min
Apr 23, 4:33 PM EDTSevere Thunderstorm WarningMRXMcMinn, Monroe, Polk31 min
Apr 23, 6:00 PM EDTSpecial Weather StatementMRXMcMinn45 min
Apr 23, 3:36 PM EDTSpecial Weather StatementMRXCherokee39 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2025Every severe thunderstorm warning in 2025

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.