Alert archive / North Carolina / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 41, NWS Blacksburg, VA

November 23, 1992Caswell County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Nov 23, 1992, 12:37 AM EST for Caswell County, North Carolina. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Nov 23, 1992, 12:37 AM EST (05:37 UTC)
Expired
Nov 23, 1992, 1:45 AM EST
In force
68 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Caswell County, NC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 5.6 hours before the alert went out and 62 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, Greensboro/Hi Pt, NC at 00:00Z on 1992-11-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 576 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, Greensboro/Hi Pt, NC at 00:00Z on 1992-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 274 square meters per square second.19395878Sfc1 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
576 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
557 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
274 m²/s²
0-3 km storm-relative helicity
354 m²/s²
Significant tornado parameter
1.0
Supercell composite
4.5

Open this sounding in Storm Lab

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 Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Nov 22, 9:26 PM ESTFlash Flood WarningRNKAlleghany3 hr
Nov 22, 10:50 PM ESTSevere Thunderstorm WarningRNKIredell25 min
Nov 22, 11:14 PM ESTTornado WarningRNKDavie, Rowan31 min
Nov 22, 11:30 PM ESTSevere Thunderstorm WarningRNKForsyth, Yadkin45 min
Nov 22, 11:43 PM ESTTornado WarningRNKDavidson32 min
Nov 23, 12:04 AM ESTSevere Thunderstorm WarningRNKGuilford, Rockingham, Stokes56 min
Nov 23, 12:51 AM ESTTornado WarningRNKDavidson, Rowan54 min
Nov 23, 1:25 AM ESTSevere Thunderstorm WarningRNKAlamance35 min
Nov 23, 1:58 AM ESTSevere Thunderstorm WarningRNKAlamance, Caswell47 min
Nov 23, 12:25 AM ESTTornado WarningRNKHenry65 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.