Alert archive / West Virginia / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 76, NWS Charleston, WV

July 7, 1991Monongalia County, Preston County, West Virginia

NWS Charleston, WV issued this severe thunderstorm warning at Jul 7, 1991, 6:47 PM EDT for Monongalia County, Preston County, West Virginia. It was in force for 58 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 7, 1991, 6:47 PM EDT (22:47 UTC)
Expired
Jul 7, 1991, 7:45 PM EDT
In force
58 min
Issued by
NWS Charleston, WV
Area
Whole counties

Counties Monongalia County, WV, Preston County, WV

What was reported inside it

TimeReportWhereRemark
Jul 7, 6:50 PM EDTThunderstorm Wind 0Monongalia, WV
Jul 7, 7:20 PM EDTThunderstorm Wind 0Preston, WV

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.8 hours before the alert went out and 222 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, Washington/Dulle, VA at 12:00Z on 1991-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1279 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, Washington/Dulle, VA at 12:00Z on 1991-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
1279 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
1270 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 7, 7:00 PM EDTSevere Thunderstorm WarningRLXMarion60 min
Jul 7, 7:13 PM EDTSevere Thunderstorm WarningRLXGrant62 min
Jul 7, 7:29 PM EDTSevere Thunderstorm WarningRLXBarbour, Taylor61 min
Jul 7, 7:53 PM EDTSevere Thunderstorm WarningRLXPreston, Tucker67 min
Jul 7, 3:38 PM EDTSevere Thunderstorm WarningRLXMuskingum67 min
Jul 7, 4:19 PM EDTSevere Thunderstorm WarningRLXFairfield, Perry56 min
Jul 7, 5:15 PM EDTSevere Thunderstorm WarningRLXMorgan, Perry60 min
Jul 7, 5:32 PM EDTSevere Thunderstorm WarningRLXAthens58 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 1991Every severe thunderstorm warning in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.