Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 79, NWS Pittsburgh, PA

July 28, 2023Clarion County, Forest County, Venango County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 28, 2023, 2:02 PM EDT for Clarion County, Forest County, Venango County, Pennsylvania. It was in force for 43 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 28, 2023, 2:02 PM EDT (18:02 UTC)
Expired: Jul 28, 2023, 2:45 PM EDT
In force: 43 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clarion County, PA, Forest County, PA, Venango County, PA

The radar

The Pittsburgh radar (KPBZ), 112 km from the middle of the area, began a volume at 18:05 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 12:00Z, 6.0 hours before the alert went out and 119 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: 1660 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 32 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 28, 1:13 PM EDT, 49 minutes earlier.

Area forecast discussion, Jul 28, 1:13 PM EDT, 49 minutes before

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Hazardous weather outlook, Jul 28, 2:55 AM EDT, 11 hours 7 minutes before

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In the hours before

Special weather statement, Jul 28, 1:44 PM EDT, 18 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 28, 1:44 PM EDT	Special Weather Statement	PBZ	Venango	46 min
Jul 28, 3:02 PM EDT	Special Weather Statement	PBZ	Beaver	43 min
Jul 28, 3:16 PM EDT	Special Weather Statement	PBZ	Jefferson	44 min
Jul 28, 7:08 PM EDT	Special Weather Statement	PBZ	Forest	37 min
Jul 28, 5:00 PM EDT	Severe Thunderstorm Warning	PBZ	Tucker	28 min
Jul 28, 2:36 PM EDT	Special Weather Statement	PBZ	Carroll, Columbiana	24 min
Jul 28, 2:40 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Monroe, Noble	26 min
Jul 28, 2:43 PM EDT	Severe Thunderstorm Warning	PBZ	Noble	31 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.