Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 35, NWS State College, PA

April 29, 20256 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 29, 2025, 7:50 PM EDT for 6 counties in Pennsylvania. It was in force for 55 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
Apr 29, 2025, 7:50 PM EDT (23:50 UTC)
Expired
Apr 29, 2025, 8:45 PM EDT
In force
55 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Columbia County, PA, Dauphin County, PA, Lebanon County, PA, Northumberland County, PA, Schuylkill County, PA, Sullivan County, PA

The radar

The State College radar (KCCX), 126 km from the middle of the area, began a volume at 23:53 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.

IssuedProductOfficeLasted
Apr 29, 3:26 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.8 hours before the alert went out and 298 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, Buffalo Intl Airport, NY at 12:00Z on 2025-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Buffalo Intl Airport, NY at 12:00Z on 2025-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1790 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 29, 7:27 PM EDT, 23 minutes earlier.

Area forecast discussion, Apr 29, 7:27 PM EDT, 23 minutes before
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Hazardous weather outlook, Apr 29, 3:30 PM EDT, 4 hours 20 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
330 PM EDT Tue Apr 29 2025

PAZ004>006-010>012-017>019-024-025-033-034-037-041-042-045-046-
301930-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Somerset-Bedford-Tioga-
Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming-
330 PM EDT Tue Apr 29 2025

...SEVERE THUNDERSTORM WATCH 191 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ026>028-035-036-049>053-056-301930-
Huntingdon-Mifflin-Juniata-Fulton-Franklin-Union-Snyder-Montour-
Northumberland-Columbia-Perry-
330 PM EDT Tue Apr 29 2025

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Isolated to scattered severe thunderstorms with damaging winds 60
mph or greater and large hail exceeding 1 inch in diameter are
possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ057>059-063>066-301930-
Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
330 PM EDT Tue Apr 29 2025

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Isolated strong to severe thunderstorms with gusty winds are
possible this evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Local storm report, Apr 29, 7:31 PM EDT, 19 minutes before
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Local storm report, Apr 29, 7:35 PM EDT, 15 minutes before
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Local storm report, Apr 29, 7:39 PM EDT, 11 minutes before
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Local storm report, Apr 29, 7:43 PM EDT, 7 minutes before
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Special weather statement, Apr 29, 7:46 PM EDT, 4 minutes before
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Local storm report, Apr 29, 7:48 PM EDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 3:59 PM EDTSpecial Weather StatementCTPWarren91 min
Apr 29, 5:28 PM EDTSpecial Weather StatementCTPCambria47 min
Apr 29, 5:37 PM EDTSevere Thunderstorm Warning Considerable damage threatCTPCambria, Clearfield68 min
Apr 29, 5:54 PM EDTSevere Thunderstorm WarningCTPSomerset36 min
Apr 29, 6:10 PM EDTSevere Thunderstorm WarningCTPBedford, Blair, Centre, Clearfield, Huntingdon65 min
Apr 29, 6:33 PM EDTSevere Thunderstorm WarningCTPHuntingdon42 min
Apr 29, 6:51 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton39 min
Apr 29, 6:57 PM EDTSevere Thunderstorm Warning Considerable damage threatCTPJuniata, Mifflin18 min
Apr 29, 7:12 PM EDTSevere Thunderstorm Warning Considerable damage threatCTPTioga33 min
Apr 29, 7:16 PM EDTSevere Thunderstorm WarningCTPJuniata, Lycoming, Mifflin, Montour, Northumberland, Perry and 2 more59 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2025Every 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.