Alert archive / West Virginia / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 252, NWS Pittsburgh, PA

August 21, 1996Preston County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 21, 1996, 7:13 PM EDT for Preston County, West Virginia. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 21, 1996, 7:13 PM EDT (23:13 UTC)
Expired
Aug 21, 1996, 8:15 PM EDT
In force
62 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Preston County, WV

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.2 hours before the alert went out and 111 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 12:00Z on 1996-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 491 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, Pittsburgh, PA at 12:00Z on 1996-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
491 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
741 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPIT 212314
SVRPIT
WVC077-220015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
713 PM EDT WED AUG 21 1996
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN NORTHERN WEST VIRGINIA
 
   ...PRESTON COUNTY.
 
AT 713 PM RADAR SHOWED A SEVERE THUNDERSTORM IN SOUTHWESTERN PRESTON
COUNTY WEST VIRGINIA. THIS STORM IS NEARLY STATIONARY AND MAY DRIFT
NORTHWOOD. FLASH FLOODING IS HIGHLY LIKELY WITH THIS STORM.
 
A FLASH FLOOD WARNING HAS ALREADY BEEN IN EFFECT UNTIL 815 PM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND OVER 55 MPH...DESTRUCTIVE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR BUILDING.  HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 21, 6:10 PM EDTFlash Flood WarningPBZPreston2 hr

Nearby

Severe Thunderstorm Warnings in West Virginia, 1996Every severe thunderstorm warning in 1996

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.