Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 43, NWS Pittsburgh, PA

May 23, 2019Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at May 23, 2019, 11:35 PM EDT for Westmoreland County, Pennsylvania. It was in force for 11 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: May 23, 2019, 11:35 PM EDT (03:35 UTC)
Expired: May 23, 2019, 11:46 PM EDT
In force: 11 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Westmoreland County, PA

The radar

The Pittsburgh radar (KPBZ), 68 km from the middle of the area, began a volume at 03:37 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 (KAGC), launched 00:00Z, 3.6 hours before the alert went out and 55 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: 485 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 10.5

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 May 23, 9:49 PM EDT, 1 hour 46 minutes earlier.

Area forecast discussion, May 23, 9:49 PM EDT, 1 hour 46 minutes before

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Hazardous weather outlook, May 23, 9:43 PM EDT, 1 hour 52 minutes before

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In the hours before

Local storm report, May 23, 8:24 PM EDT, 3 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
824 PM EDT THU MAY 23 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0817 PM     HAIL             FAIRMONT                39.48N  80.15W
05/23/2019  E1.00 INCH       MARION             WV   SOCIAL MEDIA

&&

EVENT NUMBER PBZ1902082

TGREEN

Local storm report, May 23, 9:03 PM EDT, 2 hours 32 minutes before

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Local storm report, May 23, 9:06 PM EDT, 2 hours 29 minutes before

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Local storm report, May 23, 9:11 PM EDT, 2 hours 24 minutes before

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Local storm report, May 23, 9:19 PM EDT, 2 hours 16 minutes before

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Local storm report, May 23, 9:55 PM EDT, 1 hour 40 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
May 23, 8:08 PM EDT	Special Weather Statement	PBZ	Indiana	37 min
May 23, 8:23 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Westmoreland	52 min
May 23, 8:45 PM EDT	Tornado Warning	PBZ	Indiana, Westmoreland	30 min
May 23, 9:16 PM EDT	Severe Thunderstorm Warning	PBZ	Preston, Tucker	29 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019 Every severe thunderstorm warning in 2019

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.