Alert archive / Virginia / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 21, NWS Blacksburg, VA

April 24, 1992Halifax County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 24, 1992, 6:30 PM EDT for Halifax County, Virginia. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Apr 24, 1992, 6:30 PM EDT (22:30 UTC)
Expired
Apr 24, 1992, 7:15 PM EDT
In force
45 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Halifax County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.5 hours before the alert went out and 115 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 12:00Z on 1992-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1992-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
57 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 Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 24, 5:29 PM EDTSevere Thunderstorm WarningRNKAmherst, Campbell46 min
Apr 24, 5:45 PM EDTSevere Thunderstorm WarningRNKBedford45 min
Apr 24, 7:10 PM EDTSevere Thunderstorm WarningRNKCharles City50 min

Nearby

Severe Thunderstorm Warnings in Virginia, 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.