Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS Pittsburgh, PA

July 14, 2012Allegheny County, Washington County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Jul 14, 2012, 11:13 PM EDT for Allegheny County, Washington County, Westmoreland County, Pennsylvania. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 14, 2012, 11:13 PM EDT (03:13 UTC)
Expired: Jul 15, 2012, 12:00 AM EDT
In force: 47 min
Issued by: NWS Pittsburgh, PA

Counties Allegheny County, PA, Washington County, PA, Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 27 km from the middle of the area, began a volume at 03:14 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 nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 3.2 hours before the alert went out and 14 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: 1170 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 14, 10:28 PM EDT, 45 minutes earlier.

Area forecast discussion, Jul 14, 10:28 PM EDT, 45 minutes before

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In the hours before

Special weather statement, Jul 14, 8:29 PM EDT, 2 hours 44 minutes before

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Special weather statement, Jul 14, 9:35 PM EDT, 1 hour 38 minutes before

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Special weather statement, Jul 14, 10:44 PM EDT, 29 minutes before

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Special weather statement, Jul 14, 11:13 PM EDT, 0 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
Jul 14, 10:44 PM EDT	Special Weather Statement	PBZ	Washington	31 min
Jul 15, 12:47 AM EDT	Special Weather Statement	PBZ	Indiana	43 min
Jul 15, 2:59 PM EDT	Special Weather Statement	PBZ	Jefferson	46 min
Jul 15, 5:57 PM EDT	Special Weather Statement	PBZ	Lawrence	33 min
Jul 15, 6:54 PM EDT	Special Weather Statement	PBZ	Butler	36 min
Jul 15, 7:34 PM EDT	Special Weather Statement	PBZ	Butler	26 min
Jul 14, 9:35 PM EDT	Special Weather Statement	PBZ	Monroe	25 min
Jul 15, 2:11 PM EDT	Special Weather Statement	PBZ	Coshocton	64 min
Jul 15, 3:26 PM EDT	Special Weather Statement	PBZ	Guernsey, Noble	64 min
Jul 15, 5:59 PM EDT	Special Weather Statement	PBZ	Muskingum	31 min
Jul 15, 6:14 PM EDT	Special Weather Statement	PBZ	Coshocton	31 min
Jul 15, 7:39 PM EDT	Special Weather Statement	PBZ	Carroll, Columbiana	36 min
Jul 14, 8:29 PM EDT	Special Weather Statement	PBZ	Tucker	46 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every special weather statement in 2012

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.