Alert archive / West Virginia / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 681

August 19, 2001Martin County, Kentucky; Allegany County, Garrett County, Maryland; 40 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Aug 19, 2001, 3:15 PM EDT for Martin County, Kentucky; Allegany County, Garrett County, Maryland; 40 counties in West Virginia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Aug 19, 2001, 3:15 PM EDT (19:15 UTC)
Expired
Aug 19, 2001, 8:00 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 43 counties

Martin County, KY, Allegany County, MD, Garrett County, MD, Barbour County, WV, Boone County, WV, Braxton County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Fayette County, WV, Gilmer County, WV, Grant County, WV, Greenbrier County, WV, Hampshire County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Marion County, WV, Mineral County, WV, Mingo County, WV, Monongalia County, WV, Nicholas County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Putnam County, WV, Raleigh County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Summers County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wayne County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wyoming County, WV

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 19, 7:22 PM EDTSevere Thunderstorm WarningLWXHampshire, Hardy23 min

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.3 hours before the alert went out and 242 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 2001-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 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 2001-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
22 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
1079 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
120 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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 18, 8:30 PM EDTSevere Thunderstorm WatchSPCBoone, Bracken, Campbell, Carroll, Gallatin, Grant and 5 more5 hr
Aug 19, 3:15 PM EDTSevere Thunderstorm WatchSPCBrooke, Marshall, Ohio5 hr

Nearby

Severe Thunderstorm Watches in West Virginia, 2001Severe Thunderstorm Watches in Maryland, 2001Severe Thunderstorm Watches in Kentucky, 2001Every severe thunderstorm watch in 2001

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.