Alert archive / North Carolina / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 71, NWS Greenville-Spartanburg, SC

July 18, 1992Montgomery County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 18, 1992, 5:40 PM EDT for Montgomery County, North Carolina. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1992, 5:40 PM EDT (21:40 UTC)
Expired
Jul 18, 1992, 6:30 PM EDT
In force
50 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Montgomery County, NC

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.7 hours before the alert went out and 271 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, Charleston AFB, SC at 12:00Z on 1992-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 777 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, Charleston AFB, SC at 12:00Z on 1992-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
777 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
972 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
-19 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
Jul 18, 3:04 PM EDTSevere Thunderstorm WarningGSPGaston41 min
Jul 18, 3:48 PM EDTSevere Thunderstorm WarningGSPMecklenburg42 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1992Every severe thunderstorm warning in 1992

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.