Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 19, NWS Pittsburgh, PA

April 5, 2023Allegheny County, Armstrong County, Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Apr 5, 2023, 8:13 PM EDT for Allegheny County, Armstrong County, Westmoreland County, Pennsylvania. It was in force for 32 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: Apr 5, 2023, 8:13 PM EDT (00:13 UTC)
Expired: Apr 5, 2023, 8:45 PM EDT
In force: 32 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Allegheny County, PA, Armstrong County, PA, Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 49 km from the middle of the area, began a volume at 00:13 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
Apr 5, 2:02 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 0.2 hours before the alert went out and 41 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: 67 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 2313 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 296 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Apr 5, 7:41 PM EDT, 32 minutes earlier.

Area forecast discussion, Apr 5, 7:41 PM EDT, 32 minutes before

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Hazardous weather outlook, Apr 5, 6:11 PM EDT, 2 hours 2 minutes before

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In the hours before

Local storm report, Apr 5, 6:49 PM EDT, 1 hour 24 minutes before

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Local storm report, Apr 5, 6:54 PM EDT, 1 hour 19 minutes before

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Local storm report, Apr 5, 7:25 PM EDT, 48 minutes before

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Local storm report, Apr 5, 7:29 PM EDT, 44 minutes before

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Special weather statement, Apr 5, 7:49 PM EDT, 24 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
Apr 5, 8:11 PM EDT	Special Weather Statement	PBZ	Armstrong, Butler	34 min
Apr 5, 8:35 PM EDT	Special Weather Statement	PBZ	Westmoreland	25 min
Apr 5, 8:45 PM EDT	Special Weather Statement	PBZ	Clarion, Forest, Jefferson	30 min
Apr 5, 9:16 PM EDT	Special Weather Statement	PBZ	Westmoreland	44 min
Apr 5, 8:06 PM EDT	Special Weather Statement	PBZ	Tucker	39 min
Apr 5, 8:34 PM EDT	Special Weather Statement	PBZ	Preston	26 min
Apr 5, 9:08 PM EDT	Special Weather Statement	PBZ	Monongalia, Preston, Tucker	52 min
Apr 5, 9:58 PM EDT	Special Weather Statement	PBZ	Tucker	32 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023 Every severe thunderstorm warning in 2023

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.