Alert archive / Tennessee / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 134, NWS Nashville, TN

August 20, 2026Giles County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 20, 2026, 7:31 PM CDT for Giles County, Tennessee. It was in force for 44 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, 2026, 7:31 PM CDT (00:31 UTC)
Expired: Aug 20, 2026, 8:15 PM CDT
In force: 44 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Giles County, TN

The radar

The Northeast Alabama radar (KHTX), 92 km from the middle of the area, began a volume at 00:34 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 00:00Z, 0.5 hours before the alert went out and 110 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: 2758 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 946 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 6:59 PM CDT, 32 minutes earlier.

Area forecast discussion, Aug 20, 6:59 PM CDT, 32 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 7:25 PM CDT	Special Weather Statement	OHX	Giles	50 min
Aug 20, 7:56 PM CDT	Special Weather Statement	OHX	Wayne	49 min
Aug 20, 8:02 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	43 min
Aug 20, 8:16 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	44 min
Aug 20, 8:33 PM CDT	Special Weather Statement	OHX	Overton	42 min
Aug 20, 8:52 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	53 min
Aug 20, 9:07 PM CDT	Special Weather Statement	OHX	Bedford, Marshall	38 min
Aug 20, 9:27 PM CDT	Special Weather Statement	OHX	Giles, Lawrence	48 min
Aug 20, 9:48 PM CDT	Special Weather Statement	OHX	Bedford, Coffee	42 min
Aug 20, 10:14 PM CDT	Special Weather Statement	OHX	Giles, Marshall	46 min
Aug 20, 10:58 PM CDT	Special Weather Statement	OHX	Cannon	47 min
Aug 20, 11:14 PM CDT	Special Weather Statement	OHX	Grundy	46 min
Aug 20, 11:39 PM CDT	Special Weather Statement	OHX	Rutherford	51 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2026 Every 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.