Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 206, NWS Pittsburgh, PA

July 23, 20134 counties in Pennsylvania; Ohio County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 23, 2013, 6:55 PM EDT for 4 counties in Pennsylvania; Ohio County, West Virginia. It was in force for 65 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: Jul 23, 2013, 6:55 PM EDT (22:55 UTC)
Expired: Jul 23, 2013, 8:00 PM EDT
In force: 65 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

Counties Fayette County, PA, Greene County, PA, Washington County, PA, Westmoreland County, PA, Ohio County, WV

The radar

The Pittsburgh radar (KPBZ), 53 km from the middle of the area, began a volume at 22:57 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
Jul 23, 1:54 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.9 hours before the alert went out and 38 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: 3 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 22 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 Jul 23, 6:48 PM EDT, 7 minutes earlier.

Area forecast discussion, Jul 23, 6:48 PM EDT, 7 minutes before

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Hazardous weather outlook, Jul 23, 6:54 PM EDT, 1 minute before

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In the hours before

Local storm report, Jul 23, 6:33 PM EDT, 22 minutes before

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Special weather statement, Jul 23, 6:33 PM EDT, 22 minutes before

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Local storm report, Jul 23, 6:36 PM EDT, 19 minutes before

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Local storm report, Jul 23, 6:40 PM EDT, 15 minutes before

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Local storm report, Jul 23, 6:43 PM EDT, 12 minutes before

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Local storm report, Jul 23, 6:45 PM EDT, 10 minutes before

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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 4:35 PM EDT	Special Weather Statement	PBZ	Lawrence	40 min
Jul 23, 4:38 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	52 min
Jul 23, 4:38 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	67 min
Jul 23, 5:29 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Washington	46 min
Jul 23, 5:40 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	35 min
Jul 23, 5:52 PM EDT	Special Weather Statement	PBZ	Forest	38 min
Jul 23, 6:03 PM EDT	Special Weather Statement	PBZ	Allegheny	42 min
Jul 23, 6:19 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	41 min
Jul 23, 6:22 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	38 min
Jul 23, 6:56 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	49 min
Jul 23, 7:09 PM EDT	Areal Flood Advisory	PBZ	Washington	4 hr
Jul 23, 7:54 PM EDT	Special Weather Statement	PBZ	Greene	51 min
Jul 23, 1:39 PM EDT	Special Weather Statement	PBZ	Coshocton	51 min
Jul 23, 2:29 PM EDT	Special Weather Statement	PBZ	Tuscarawas	46 min
Jul 23, 3:38 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	52 min
Jul 23, 3:46 PM EDT	Tornado Warning	PBZ	Columbiana	29 min
Jul 23, 3:58 PM EDT	Special Weather Statement	PBZ	Coshocton	47 min
Jul 23, 4:10 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Tuscarawas	50 min
Jul 23, 4:23 PM EDT	Special Weather Statement	PBZ	Muskingum	52 min
Jul 23, 4:43 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Tuscarawas	32 min
Jul 23, 5:00 PM EDT	Severe Thunderstorm Warning	PBZ	Muskingum	30 min
Jul 23, 5:12 PM EDT	Tornado Warning	PBZ	Carroll, Columbiana	33 min
Jul 23, 5:18 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey	42 min
Jul 23, 5:47 PM EDT	Special Weather Statement	PBZ	Coshocton	88 min
Jul 23, 6:06 PM EDT	Special Weather Statement	PBZ	Muskingum, Noble	84 min
Jul 23, 6:23 PM EDT	Areal Flood Advisory	PBZ	Columbiana	4 hr
Jul 23, 6:28 PM EDT	Areal Flood Advisory	PBZ	Coshocton, Tuscarawas	4 hr
Jul 23, 6:33 PM EDT	Special Weather Statement	PBZ	Harrison, Tuscarawas	57 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2013 Severe Thunderstorm Warnings in West Virginia, 2013 Every severe thunderstorm warning in 2013

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.