Alert archive / West Virginia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 801

November 9, 2000Garrett County, Maryland; 6 counties in Pennsylvania; 11 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at Nov 9, 2000, 9:00 PM EST for Garrett County, Maryland; 6 counties in Pennsylvania; 11 counties in West Virginia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Nov 9, 2000, 9:00 PM EST (02:00 UTC)
Expired
Nov 10, 2000, 12:00 AM EST
In force
3 hr
Issued by
the Storm Prediction Center

Counties Garrett County, MD, Allegheny County, PA, Fayette County, PA, Greene County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Grant County, WV, Harrison County, WV, Lewis County, WV, Marion County, WV, Mineral County, WV, Monongalia County, WV, Preston County, WV, Taylor County, WV, Tucker County, WV, Upshur County, WV

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Nov 9, 9:52 PM ESTSevere Thunderstorm WarningPBZFayette53 min
Nov 9, 10:11 PM ESTSevere Thunderstorm WarningPBZWestmoreland64 min
Nov 9, 10:15 PM ESTSevere Thunderstorm WarningCTPSomerset60 min
Nov 9, 10:22 PM ESTSevere Thunderstorm WarningPBZAllegheny53 min
Nov 9, 10:24 PM ESTSevere Thunderstorm WarningPBZGarrett66 min
Nov 9, 10:32 PM ESTSevere Thunderstorm WarningLWXMineral58 min

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 2.0 hours before the alert went out and 105 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 2000-11-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 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 00:00Z on 2000-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 220 square meters per square second.1939587897Sfc1 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
38 J/kg
Mixed-layer CIN
-222 J/kg
Mixed-layer LCL
952 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
220 m²/s²
0-3 km storm-relative helicity
187 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
Nov 9, 7:30 PM ESTSevere Thunderstorm WatchSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 8 more5 hr

Nearby

Severe Thunderstorm Watches in West Virginia, 2000Severe Thunderstorm Watches in Pennsylvania, 2000Severe Thunderstorm Watches in Maryland, 2000Every severe thunderstorm watch in 2000

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.