Alert archive / West Virginia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 170, NWS Pittsburgh, PA

August 4, 2015Preston County, Tucker County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 4, 2015, 2:12 AM EDT for Preston County, Tucker County, West Virginia. It was in force for 48 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, 2015, 2:12 AM EDT (06:12 UTC)
Expired: Aug 4, 2015, 3:00 AM EDT
In force: 48 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Preston County, WV, Tucker County, WV

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 6.2 hours before the alert went out and 131 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: 1115 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1156 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.3

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, 1:25 AM EDT, 47 minutes earlier.

Area forecast discussion, Aug 4, 1:25 AM EDT, 47 minutes before

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Hazardous weather outlook, Aug 4, 1:28 AM EDT, 44 minutes before

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In the hours before

Local storm report, Aug 4, 12:32 AM EDT, 1 hour 40 minutes before

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Local storm report, Aug 4, 12:34 AM EDT, 1 hour 38 minutes before

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Local storm report, Aug 4, 12:40 AM EDT, 1 hour 32 minutes before

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Local storm report, Aug 4, 12:43 AM EDT, 1 hour 29 minutes before

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Local storm report, Aug 4, 12:58 AM EDT, 1 hour 14 minutes before

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Special weather statement, Aug 4, 1:07 AM EDT, 1 hour 5 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 8:21 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington, Westmoreland	39 min
Aug 3, 8:57 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	33 min
Aug 3, 9:05 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion	40 min
Aug 3, 9:22 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	38 min
Aug 3, 9:38 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson	52 min
Aug 3, 10:58 PM EDT	Special Weather Statement	PBZ	Westmoreland	32 min
Aug 3, 11:13 PM EDT	Special Weather Statement	PBZ	Washington	47 min
Aug 3, 11:39 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	29 min
Aug 3, 11:52 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	38 min
Aug 4, 12:13 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	47 min
Aug 4, 12:46 AM EDT	Severe Thunderstorm Warning	PBZ	Fayette	17 min
Aug 4, 1:07 AM EDT	Special Weather Statement	PBZ	Somerset	23 min
Aug 3, 11:23 PM EDT	Special Weather Statement	PBZ	Marion, Monongalia	52 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2015 Every severe thunderstorm warning in 2015

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.