Alert archive / Tennessee / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 245, NWS Nashville, TN

August 20, 2025Cumberland County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 20, 2025, 12:13 PM CDT for Cumberland County, Tennessee. It was in force for 32 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 20, 2025, 12:13 PM CDT (17:13 UTC)
Expired: Aug 20, 2025, 12:45 PM CDT
In force: 32 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Cumberland County, TN

The radar

The Nashville radar (KOHX), 144 km from the middle of the area, began a volume at 17:13 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, 5.2 hours before the alert went out and 145 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 250 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 12:42 PM CDT	Special Weather Statement	OHX	Cumberland	48 min
Aug 20, 12:48 PM CDT	Areal Flood Advisory	OHX	Cumberland	3 hr
Aug 20, 1:52 PM CDT	Areal Flood Advisory	OHX	Cumberland	113 min
Aug 20, 2:16 PM CDT	Special Weather Statement	OHX	Grundy	29 min
Aug 20, 2:32 PM CDT	Special Weather Statement	OHX	Van Buren, Warren	43 min
Aug 20, 2:48 PM CDT	Special Weather Statement	OHX	Grundy	42 min
Aug 20, 2:54 PM CDT	Special Weather Statement	OHX	Bedford	36 min
Aug 20, 5:22 PM CDT	Special Weather Statement	OHX	Marshall	38 min
Aug 20, 5:33 PM CDT	Areal Flood Advisory	OHX	Fentress	117 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2025 Every 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.