Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 37, NWS Pittsburgh, PA

June 26, 2023Fayette County, Pennsylvania; Preston County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 26, 2023, 6:59 PM EDT for Fayette County, Pennsylvania; Preston County, West Virginia. It was in force for 19 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
Jun 26, 2023, 6:59 PM EDT (22:59 UTC)
Expired
Jun 26, 2023, 7:18 PM EDT
In force
19 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Fayette County, PA, Preston County, WV

The radar

The Pittsburgh radar (KPBZ), 105 km from the middle of the area, began a volume at 22:59 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.0 hours before the alert went out and 211 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2023-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 543 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2023-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
543 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1005 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
58 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 Jun 26, 6:42 PM EDT, 17 minutes earlier.

Area forecast discussion, Jun 26, 6:42 PM EDT, 17 minutes before
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Hazardous weather outlook, Jun 26, 4:49 PM EDT, 2 hours 10 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Pittsburgh PA
449 PM EDT Mon Jun 26 2023

PAZ007>009-013>016-020>022-029-031-073>078-WVZ021-509>514-272015-
Mercer-Venango-Forest-Lawrence-Butler-Clarion-Jefferson PA-Beaver-
Allegheny-Armstrong-Washington-Greene-Westmoreland-
Higher Elevations of Westmoreland-Fayette-
Higher Elevations of Fayette-Indiana-Higher Elevations of Indiana-
Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
449 PM EDT Mon Jun 26 2023

This Hazardous Weather Outlook is for western Pennsylvania and
northern West Virginia.

.DAY ONE...This afternoon and tonight.

Heavy downpours in showers and thunderstorms could result in
localized flooding through early this evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

OHZ039>041-048>050-057>059-068-069-WVZ001>004-012-272015-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Belmont-Noble-Monroe-Hancock-Brooke-Ohio-Marshall-
Wetzel-
449 PM EDT Mon Jun 26 2023

This Hazardous Weather Outlook is for east central Ohio, and
northern West Virginia.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

WM

In the hours before

Special weather statement, Jun 26, 5:34 PM EDT, 1 hour 25 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
534 PM EDT Mon Jun 26 2023

PAZ014-020-262200-
Butler PA-Beaver PA-
534 PM EDT Mon Jun 26 2023

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN BEAVER AND
SOUTHWESTERN BUTLER COUNTIES THROUGH 600 PM EDT...

At 533 PM EDT, Doppler radar was tracking a strong thunderstorm over
Monaca, moving northeast at 30 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Cranberry, Aliquippa, Beaver Falls, Monaca, Economy, New Brighton,
Beaver, Baden, Zelienople, Rochester, Industry, Evans City, Patterson
Township, Conway, Freedom, Nixon, Harmony, Bridgewater, Patterson
Heights, and East Rochester.

This includes the following highways...
  Pennsylvania Turnpike between mile markers 17 and 27.
  Interstate 79 in Pennsylvania between mile markers 80 and 90.
  Interstate 376 in Pennsylvania between mile markers 36 and 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4078 7994 4061 8026 4069 8039 4085 8019
TIME...MOT...LOC 2133Z 227DEG 26KT 4068 8027

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Hefferan
Special weather statement, Jun 26, 5:55 PM EDT, 1 hour 4 minutes before
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Special weather statement, Jun 26, 6:09 PM EDT, 50 minutes before
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Special weather statement, Jun 26, 6:28 PM EDT, 31 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 8:11 PM EDTSpecial Weather StatementPBZWestmoreland34 min
Jun 25, 8:21 PM EDTSevere Thunderstorm WarningPBZArmstrong, Indiana, Jefferson, Westmoreland24 min
Jun 25, 8:25 PM EDTSevere Thunderstorm WarningPBZIndiana, Westmoreland35 min
Jun 25, 8:43 PM EDTSevere Thunderstorm WarningPBZIndiana, Jefferson47 min
Jun 25, 8:45 PM EDTSpecial Weather StatementPBZForest45 min
Jun 25, 9:02 PM EDTSpecial Weather StatementPBZCambria13 min
Jun 25, 9:31 PM EDTSpecial Weather StatementPBZJefferson29 min
Jun 26, 8:43 AM EDTSpecial Weather StatementPBZClarion, Forest, Jefferson47 min
Jun 26, 5:34 PM EDTSpecial Weather StatementPBZBeaver26 min
Jun 26, 5:55 PM EDTSpecial Weather StatementPBZButler35 min
Jun 26, 6:09 PM EDTSpecial Weather StatementPBZAllegheny36 min
Jun 26, 6:28 PM EDTSpecial Weather StatementPBZWashington32 min
Jun 26, 6:32 PM EDTSevere Thunderstorm WarningPBZAllegheny, Washington28 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023Severe Thunderstorm Warnings in West Virginia, 2023Every 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.