Alert archive / West Virginia / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 234, NWS Pittsburgh, PA

August 4, 2004Preston County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 4, 2004, 3:12 PM EDT for Preston County, West Virginia. It was in force for 63 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 4, 2004, 3:12 PM EDT (19:12 UTC)
Expired: Aug 4, 2004, 4:15 PM EDT
In force: 63 min
Issued by: NWS Pittsburgh, PA
Area: Counties, with a storm outline in the text

County Preston County, WV

The radar

The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 19:13 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 4, 2:55 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.2 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 35 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 869 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 3:12 PM EDT, 0 minutes earlier.

Area forecast discussion, Aug 4, 3:12 PM EDT, 0 minutes before

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Hazardous weather outlook, Aug 4, 5:56 AM EDT, 9 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
556 AM EDT WED AUG 4 2004

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029>032-WVZ001>004-012-021>023-041-050955-
ALLEGHENY PA-ARMSTRONG PA-BEAVER PA-BELMONT OH-BROOKE WV-BUTLER PA-
CARROLL OH-CLARION PA-COLUMBIANA OH-COSHOCTON OH-FAYETTE PA-
FOREST PA-GARRETT MD-GREENE PA-GUERNSEY OH-HANCOCK WV-HARRISON OH-
INDIANA PA-JEFFERSON PA-JEFFERSON OH-LAWRENCE PA-MARION WV-
MARSHALL WV-MERCER PA-MONONGALIA WV-MONROE OH-MUSKINGUM OH-NOBLE OH-
OHIO WV-PRESTON WV-TUCKER WV-TUSCARAWAS OH-VENANGO PA-WASHINGTON PA-
WESTMORELAND PA-WETZEL WV-
556 AM EDT WED AUG 4 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN PENNSYLVANIA EAST
CENTRAL OHIO...NORTHERN WEST VIRGINIA AND GARRETT COUNTY MARYLAND.

.DAY ONE...TODAY

A LOW PRESSURE SYSTEM WILL MOVE EASTWARD INTO THE OHIO VALLEY TODAY
AND ACROSS WESTERN PENNSYLVANIA TONIGHT. SHOWERS AND THUNDERSTORMS
WILL SPREAD INTO THE REGION LATER TODAY AND CONTINUE TONIGHT.
SOME THUNDERSTORMS MAY BE SEVERE...ESPECIALLY THIS AFTERNOON AND
TONIGHT. DAMAGING WINDS AND HAIL ARE POSSIBLE. SOME STORMS WILL ALSO
CONTAIN TORRENTIAL RAINS. A FLOOD WATCH FOR FLASH FLOODING IS IN
EFFECT FROM 6 PM THIS EVENING THROUGH 10 AM THURSDAY FOR PORTIONS OF
WESTERN PENNSYLVANIA NORTH OF PITTSBURGH.

.DAYS TWO THROUGH SEVEN...
THERE WILL STILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS ON
THURSDAY...MAINLY IN THE MORNING. HEAVY DOWNPOURS WILL BE POSSIBLE. A
FLOOD WATCH FOR FLASH FLOODING WILL CONTINUE THROUGH 10 AM THURSDAY
FOR PORTIONS OF WESTERN PENNSYLVANIA NORTH OF PITTSBURGH.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY.

In the hours before

Local storm report, Aug 4, 2:58 PM EDT, 14 minutes before

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Local storm report, Aug 4, 2:59 PM EDT, 13 minutes before

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Local storm report, Aug 4, 3:08 PM EDT, 4 minutes before

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Local storm report, Aug 4, 3:09 PM EDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
309 PM EDT WED AUG 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0302 PM     TSTM WND DMG     EAST MCKEESPORT         40.38N 79.81W
08/04/2004                   ALLEGHENY          PA   LAW ENFORCEMENT

            WIERES TORN DOWN BY FALLING TREES REPORTED IN TOWN.

&&

Local storm report, Aug 4, 3:11 PM EDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
311 PM EDT WED AUG 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0302 PM     TSTM WND DMG     4 E ARMAGH              40.45N 78.96W
08/04/2004                   INDIANA            PA   SKYWARN SPOTTER

            NUMEROUS TREES REPORTED DOWN IN TOWN AND IN GAS CENTER.

&&

Local storm report, Aug 4, 3:12 PM EDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
312 PM EDT WED AUG 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0309 PM     TSTM WND DMG     BLAIRSVILLE             40.43N 79.26W
08/04/2004                   INDIANA            PA   SKYWARN SPOTTER

            TREES DOWN WITHIN THE TOWN.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 1:14 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	61 min
Aug 4, 1:27 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	63 min
Aug 4, 2:00 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	60 min
Aug 4, 2:11 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	49 min
Aug 4, 2:17 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion	58 min
Aug 4, 2:19 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	56 min
Aug 4, 2:22 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	68 min
Aug 4, 2:38 PM EDT	Severe Thunderstorm Warning	PBZ	Westmoreland	67 min
Aug 4, 2:53 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	67 min
Aug 4, 3:33 PM EDT	Tornado Warning	PBZ	Westmoreland	27 min
Aug 4, 12:31 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton	59 min
Aug 4, 12:46 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Muskingum, Tuscarawas	59 min
Aug 4, 1:11 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	34 min
Aug 4, 1:16 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Harrison	59 min
Aug 4, 1:29 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Monroe	61 min
Aug 4, 1:36 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	54 min
Aug 4, 1:51 PM EDT	Severe Thunderstorm Warning	PBZ	Hancock	24 min
Aug 4, 1:57 PM EDT	Severe Thunderstorm Warning	PBZ	Brooke	33 min
Aug 4, 1:59 PM EDT	Severe Thunderstorm Warning	PBZ	Marshall, Ohio	46 min
Aug 4, 2:05 PM EDT	Severe Thunderstorm Warning	PBZ	Wetzel	55 min
Aug 4, 2:44 PM EDT	Severe Thunderstorm Warning	PBZ	Marion, Monongalia	61 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2004 Every severe thunderstorm warning in 2004

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.