Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 199, NWS Morristown, TN

August 16, 2025Morgan County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Aug 16, 2025, 6:34 PM EDT for Morgan County, Tennessee. It was in force for 37 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
Aug 16, 2025, 6:34 PM EDT (22:34 UTC)
Expired
Aug 16, 2025, 7:11 PM EDT
In force
37 min
Issued by
NWS Morristown, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Morgan County, TN

The radar

The Knoxville radar (KMRX), 112 km from the middle of the area, began a volume at 22:36 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.6 hours before the alert went out and 374 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, Cncnati-Daytn, OH at 12:00Z on 2025-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 770 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, Cncnati-Daytn, OH at 12:00Z on 2025-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
770 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1240 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
19 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
Aug 16, 3:41 PM EDTAreal Flood AdvisoryMRXBledsoe3 hr
Aug 16, 4:01 PM EDTSpecial Weather StatementMRXMonroe44 min
Aug 16, 4:32 PM EDTAreal Flood AdvisoryMRXMonroe2 hr
Aug 16, 5:04 PM EDTSpecial Weather StatementMRXSequatchie41 min
Aug 16, 5:17 PM EDTSpecial Weather StatementMRXScott43 min
Aug 16, 5:36 PM EDTSpecial Weather StatementMRXMarion39 min
Aug 16, 5:37 PM EDTSpecial Weather StatementMRXPolk38 min
Aug 16, 6:23 PM EDTSpecial Weather StatementMRXMorgan52 min
Aug 16, 6:27 PM EDTSpecial Weather StatementMRXBradley48 min
Aug 16, 7:08 PM EDTSpecial Weather StatementMRXMorgan67 min
Aug 16, 7:11 PM EDTSpecial Weather StatementMRXKnox49 min
Aug 16, 3:14 PM EDTSpecial Weather StatementMRXCherokee46 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.