Alert archive / Tennessee / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 129, NWS Nashville, TN

August 17, 2026Giles County, Marshall County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 17, 2026, 5:06 PM CDT for Giles County, Marshall County, Tennessee. It was in force for 39 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 17, 2026, 5:06 PM CDT (22:06 UTC)
Expired
Aug 17, 2026, 5:45 PM CDT
In force
39 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Giles County, TN, Marshall County, TN

The radar

The Northeast Alabama radar (KHTX), 87 km from the middle of the area, began a volume at 22:06 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 92 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 2026-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1267 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 2026-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
1267 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1083 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.9

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 1:59 PM CDTSpecial Weather StatementOHXCumberland, White46 min
Aug 17, 2:02 PM CDTSevere Thunderstorm WarningOHXCannon, Coffee, Warren43 min
Aug 17, 2:41 PM CDTSevere Thunderstorm WarningOHXCoffee, Grundy, Warren49 min
Aug 17, 2:45 PM CDTSpecial Weather StatementOHXCumberland, White45 min
Aug 17, 2:56 PM CDTSevere Thunderstorm WarningOHXVan Buren, White49 min
Aug 17, 3:06 PM CDTSevere Thunderstorm WarningOHXVan Buren24 min
Aug 17, 3:31 PM CDTSpecial Weather StatementOHXCumberland44 min
Aug 17, 4:04 PM CDTSpecial Weather StatementOHXLawrence41 min
Aug 17, 4:05 PM CDTSpecial Weather StatementOHXCannon40 min
Aug 17, 4:09 PM CDTSpecial Weather StatementOHXCumberland51 min
Aug 17, 4:13 PM CDTSpecial Weather StatementOHXGrundy47 min
Aug 17, 4:21 PM CDTSpecial Weather StatementOHXGrundy39 min
Aug 17, 4:41 PM CDTSpecial Weather StatementOHXGiles, Lawrence49 min
Aug 17, 5:09 PM CDTSevere Thunderstorm WarningOHXGrundy51 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.