Alert archive / North Carolina / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 129, NWS Greenville-Spartanburg, SC

August 20, 1993Henderson County, Polk County, Rutherford County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 20, 1993, 6:20 PM EDT for Henderson County, Polk County, Rutherford County, North Carolina. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Aug 20, 1993, 6:20 PM EDT (22:20 UTC)
Expired
Aug 20, 1993, 7:15 PM EDT
In force
55 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

Counties Henderson County, NC, Polk County, NC, Rutherford County, NC

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 10.3 hours before the alert went out and 185 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, Athens Municipal, GA at 12:00Z on 1993-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1126 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, Athens Municipal, GA at 12:00Z on 1993-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
1126 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 20, 5:38 PM EDTSevere Thunderstorm WarningGSPCatawba67 min
Aug 20, 6:14 PM EDTSevere Thunderstorm WarningGSPCherokee, Graham, Swain61 min
Aug 20, 6:24 PM EDTSevere Thunderstorm WarningGSPLincoln51 min
Aug 20, 6:36 PM EDTSevere Thunderstorm WarningGSPJackson54 min
Aug 20, 6:45 PM EDTSevere Thunderstorm WarningGSPMecklenburg60 min
Aug 20, 6:57 PM EDTSevere Thunderstorm WarningGSPCleveland, Gaston48 min
Aug 20, 7:39 PM EDTSevere Thunderstorm WarningGSPUnion43 min
Aug 20, 7:04 PM EDTSevere Thunderstorm WarningGSPPickens41 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1993Every severe thunderstorm warning in 1993

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.