Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 101, NWS Pittsburgh, PA

May 2, 20254 counties in Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at May 2, 2025, 5:13 PM EDT for 4 counties in Pennsylvania. It was in force for 47 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 2, 2025, 5:13 PM EDT (21:13 UTC)
Expired: May 2, 2025, 6:00 PM EDT
In force: 47 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Allegheny County, PA, Beaver County, PA, Butler County, PA, Washington County, PA

The radar

The Pittsburgh radar (KPBZ), 9 km from the middle of the area, began a volume at 21:13 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
May 2, 12:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.2 hours before the alert went out and 17 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: 88 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 2, 4:46 PM EDT, 27 minutes earlier.

Area forecast discussion, May 2, 4:46 PM EDT, 27 minutes before

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Hazardous weather outlook, May 2, 4:47 PM EDT, 26 minutes before

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In the hours before

Local storm report, May 2, 4:15 PM EDT, 58 minutes before

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Local storm report, May 2, 4:18 PM EDT, 55 minutes before

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Local storm report, May 2, 4:19 PM EDT, 54 minutes before

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Local storm report, May 2, 4:21 PM EDT, 52 minutes before

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Local storm report, May 2, 4:39 PM EDT, 34 minutes before

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      <p id="message2">
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, May 2, 4:44 PM EDT, 29 minutes before

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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 2, 3:54 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	51 min
May 2, 4:08 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	37 min
May 2, 4:25 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Washington	42 min
May 2, 4:35 PM EDT	Severe Thunderstorm Warning	PBZ	Washington	40 min
May 2, 4:43 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence	32 min
May 2, 4:45 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	45 min
May 2, 4:51 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler	39 min
May 2, 5:02 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	12 min
May 2, 5:09 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Washington	36 min
May 2, 5:26 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Jefferson	49 min
May 2, 6:04 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	41 min
May 2, 3:34 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PBZ	Brooke, Ohio	41 min
May 2, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Ohio	35 min
May 2, 2:23 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton	41 min
May 2, 3:00 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Harrison, Jefferson	45 min
May 2, 3:15 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Harrison, Tuscarawas	38 min
May 2, 3:39 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Tuscarawas	37 min
May 2, 3:43 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Muskingum	35 min
May 2, 3:46 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Harrison, Jefferson	44 min
May 2, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Muskingum, Noble	37 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2025 Every severe thunderstorm warning in 2025

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.