Alert archive / West Virginia / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 135, NWS Charleston, WV

July 29, 1993Preston County, West Virginia; Garrett County, Maryland

NWS Charleston, WV issued this severe thunderstorm warning at Jul 29, 1993, 12:08 AM EDT for Preston County, West Virginia; Garrett County, Maryland. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jul 29, 1993, 12:08 AM EDT (04:08 UTC)
Expired
Jul 29, 1993, 1:15 AM EDT
In force
67 min
Issued by
NWS Charleston, WV
Area
Whole counties

Counties Garrett County, MD, Preston County, WV

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 4.1 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, Pittsburgh, PA at 00:00Z on 1993-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2503 joules per kilogram.LCLEL10008507005003002001001 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, Pittsburgh, PA at 00:00Z on 1993-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.193958Sfc1 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
2503 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1289 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
1.1
Supercell composite
9.5

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 Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 28, 11:18 PM EDTSevere Thunderstorm WarningRLXMonongalia, Preston57 min
Jul 29, 12:50 AM EDTSevere Thunderstorm WarningRLXHampshire55 min
Jul 28, 8:01 PM EDTSevere Thunderstorm WarningRLXDelaware, Franklin44 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 1993Severe Thunderstorm Warnings in Maryland, 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.