Alert archive / West Virginia / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 204

May 2, 200216 counties in Ohio; Fayette County, Greene County, Washington County, Pennsylvania; 17 counties in West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at May 2, 2002, 4:30 AM EDT for 16 counties in Ohio; Fayette County, Greene County, Washington County, Pennsylvania; 17 counties in West Virginia. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 2, 2002, 4:30 AM EDT (08:30 UTC)
Expired
May 2, 2002, 8:00 AM EDT
In force
4 hr
Issued by
the Storm Prediction Center
All 36 counties

Athens County, OH, Belmont County, OH, Fairfield County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Jackson County, OH, Licking County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Vinton County, OH, Washington County, OH, Fayette County, PA, Greene County, PA, Washington County, PA, Barbour County, WV, Brooke County, WV, Doddridge County, WV, Harrison County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Ritchie County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 136 km from the middle of the area, began a volume at 08:31 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 2, 6:38 AM EDTFlash Flood WarningPBZPreston3 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 8.5 hours before the alert went out and 137 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 2002-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2002-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2247 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
402 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 2, 12:45 AM EDTSevere Thunderstorm WatchSPCBrown, Butler, Champaign, Clark, Clermont, Clinton and 18 more5 hr
May 2, 9:45 AM EDTTornado WatchSPCLawrence4 hr
May 2, 2:30 PM EDTTornado WatchSPCAdams, Bedford, Berks, Blair, Cambria, Cumberland and 16 more7 hr
May 2, 3:30 PM EDTTornado WatchSPCBucks, Chester, Delaware, Montgomery, Philadelphia6 hr
May 1, 9:00 PM EDTTornado WatchSPCMcDowell4 hr
May 2, 12:30 PM EDTSevere Thunderstorm WatchSPCFayette, Greenbrier, Mercer, Monroe, Nicholas, Pendleton and 4 more5 hr
May 2, 1:30 PM EDTSevere Thunderstorm WatchSPCMcDowell7 hr
May 2, 4:30 PM EDTSevere Thunderstorm WatchSPCMercer, Monroe, Summers6 hr
May 2, 5:00 PM EDTSevere Thunderstorm WatchSPCMercer, Monroe, Summers5 hr

Nearby

Severe Thunderstorm Watches in West Virginia, 2002Severe Thunderstorm Watches in Ohio, 2002Severe Thunderstorm Watches in Pennsylvania, 2002Every severe thunderstorm watch in 2002

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; radar from the NEXRAD Level II archive.