Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 76, NWS Pittsburgh, PA

May 25, 2024Mercer County, Venango County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at May 25, 2024, 12:29 PM EDT for Mercer County, Venango County, Pennsylvania. It was in force for 31 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 25, 2024, 12:29 PM EDT (16:29 UTC)
Expired
May 25, 2024, 1:00 PM EDT
In force
31 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Mercer County, PA, Venango County, PA

The radar

The Pittsburgh radar (KPBZ), 93 km from the middle of the area, began a volume at 16:31 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, 4.5 hours before the alert went out and 105 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, Pittsburgh, PA at 12:00Z on 2024-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 331 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, Pittsburgh, PA at 12:00Z on 2024-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
331 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
993 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
-24 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 May 25, 12:23 PM EDT, 6 minutes earlier.

Area forecast discussion, May 25, 12:23 PM EDT, 6 minutes before
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Hazardous weather outlook, May 25, 11:42 AM EDT, 47 minutes before
Hazardous Weather Outlook
National Weather Service Pittsburgh PA
1142 AM EDT Sat May 25 2024

OHZ040-041-049-050-059-069-PAZ007>009-013>016-020>022-029-031-
073>078-WVZ001>004-012-021-509>514-261545-
Carroll-Columbiana-Harrison-Jefferson OH-Belmont-Monroe-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-
Hancock-Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
1142 AM EDT Sat May 25 2024

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

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms will develop this morning and into this
evening. Some severe storms are possible with the main threat being
be damaging wind gusts, large hail, and excessive rainfall that
could lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Additional showers and thunderstorms will develop Sunday night and
the risk for excessive rainfall that could lead to flash flooding
increases overnight Sunday into Monday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ039-048-057-058-068-261545-
Tuscarawas-Coshocton-Muskingum-Guernsey-Noble-
1142 AM EDT Sat May 25 2024

This Hazardous Weather Outlook is for east central Ohio.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms will develop this morning and into this
evening. Some severe storms are possible with the main threat being
be damaging wind gusts, large hail, and excessive rainfall that
could lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Additional showers and thunderstorms will develop Sunday night and
the risk for both marginal severe weather and excessive rainfall
that could lead to flash flooding increases overnight Sunday into
Monday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MLB

In the hours before

Special weather statement, May 25, 12:04 PM EDT, 25 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 12:04 PM EDTSpecial Weather StatementPBZMercer41 min
May 25, 12:37 PM EDTSpecial Weather StatementPBZMercer53 min
May 25, 1:00 PM EDTSevere Thunderstorm WarningPBZMercer, Venango45 min
May 25, 1:26 PM EDTSpecial Weather StatementPBZLawrence49 min
May 25, 1:45 PM EDTSpecial Weather StatementPBZClarion45 min
May 25, 2:14 PM EDTSevere Thunderstorm WarningPBZClarion, Forest, Jefferson, Venango46 min
May 25, 2:18 PM EDTSpecial Weather StatementPBZClarion42 min
May 25, 2:20 PM EDTSpecial Weather StatementPBZBeaver40 min
May 25, 2:34 PM EDTSevere Thunderstorm WarningPBZArmstrong, Butler, Clarion41 min
May 25, 2:36 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Butler39 min
May 25, 3:04 PM EDTSevere Thunderstorm WarningPBZAllegheny, Westmoreland41 min
May 25, 3:08 PM EDTSpecial Weather StatementPBZAllegheny37 min
May 25, 3:10 PM EDTSpecial Weather StatementPBZJefferson50 min
May 25, 3:13 PM EDTSevere Thunderstorm WarningPBZAllegheny, Armstrong, Butler, Westmoreland47 min
May 25, 3:22 PM EDTSevere Thunderstorm WarningPBZAllegheny, Washington38 min
May 25, 3:26 PM EDTSevere Thunderstorm WarningPBZAllegheny, Armstrong, Westmoreland49 min
May 25, 3:41 PM EDTSevere Thunderstorm WarningPBZBeaver, Lawrence49 min
May 25, 3:59 PM EDTSevere Thunderstorm WarningPBZAllegheny, Fayette, Washington, Westmoreland46 min
May 25, 4:02 PM EDTSpecial Weather StatementPBZArmstrong, Indiana73 min
May 25, 4:09 PM EDTFlash Flood WarningPBZAllegheny, Armstrong, Butler, Indiana, Westmoreland3 hr
May 25, 4:14 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington46 min
May 25, 4:28 PM EDTSpecial Weather StatementPBZWestmoreland32 min
May 25, 4:30 PM EDTSpecial Weather StatementPBZFayette30 min
May 25, 4:42 PM EDTSevere Thunderstorm WarningPBZFayette, Indiana, Westmoreland33 min
May 25, 4:50 PM EDTSevere Thunderstorm WarningPBZFayette40 min
May 25, 4:51 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington39 min
May 25, 4:59 PM EDTTornado WarningPBZAllegheny, Beaver, Washington31 min
May 25, 5:08 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Washington52 min
May 25, 5:30 PM EDTSevere Thunderstorm WarningPBZFayette15 min
May 25, 5:44 PM EDTSevere Thunderstorm Warning Considerable damage threatPBZAllegheny, Washington, Westmoreland61 min
May 25, 6:01 PM EDTSpecial Weather StatementPBZMercer29 min
May 25, 6:15 PM EDTSpecial Weather StatementPBZBeaver30 min
May 25, 6:18 PM EDTSpecial Weather StatementPBZGreene27 min
May 25, 6:22 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington38 min
May 25, 6:28 PM EDTSpecial Weather StatementPBZMercer47 min
May 25, 6:32 PM EDTSpecial Weather StatementPBZFayette43 min
May 25, 7:03 PM EDTSevere Thunderstorm WarningPBZFayette, Greene42 min
May 25, 7:06 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Washington39 min
May 25, 7:11 PM EDTSpecial Weather StatementPBZVenango34 min
May 24, 11:48 PM EDTFlash Flood WarningPBZMarion, Monongalia117 min
May 25, 7:01 PM EDTSpecial Weather StatementPBZHancock29 min
May 25, 7:45 PM EDTSpecial Weather StatementPBZPreston60 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2024Every severe thunderstorm warning in 2024

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.