Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 15, NWS State College, PA

April 15, 2025Dauphin County, Lancaster County, Lebanon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 15, 2025, 5:05 PM EDT for Dauphin County, Lancaster County, Lebanon County, Pennsylvania. It was in force for 40 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 15, 2025, 5:05 PM EDT (21:05 UTC)
Expired
Apr 15, 2025, 5:45 PM EDT
In force
40 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dauphin County, PA, Lancaster County, PA, Lebanon County, PA

The radar

The State College radar (KCCX), 146 km from the middle of the area, began a volume at 21:08 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, 9.1 hours before the alert went out and 166 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 2025-04-15Temperature 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, Washington/Dulle, VA at 12:00Z on 2025-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939587897117Sfc1 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
1850 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
55 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 State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 15, 4:30 PM EDT, 35 minutes earlier.

Area forecast discussion, Apr 15, 4:30 PM EDT, 35 minutes before
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Hazardous weather outlook, Apr 15, 4:32 AM EDT, 12 hours 33 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
432 AM EDT Tue Apr 15 2025

PAZ006-010>012-037-041-042-160845-
Potter-Elk-Cameron-Northern Clinton-Tioga-Northern Lycoming-Sullivan-
432 AM EDT Tue Apr 15 2025

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Gusty westerly winds between 30 and 40 mph are likely this afternoon
and tonight. Briefly higher gusts could accompany isolated
thunderstorms late this morning through early this afternoon.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report measured wind gusts and any wind
damage.

PAZ017>019-024>028-033>036-045-046-049>053-056>059-063>066-160845-
Clearfield-Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-
Mifflin-Juniata-Somerset-Bedford-Fulton-Franklin-Southern Clinton-
Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia-Perry-
Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
432 AM EDT Tue Apr 15 2025

...WIND ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM
EDT THIS EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

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

   Wind Advisory.

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

Areas of frost Thursday morning and possibly even Friday morning
could image sensitive vegetation where the growing season has started
across the Lower Susquehanna Valley and adjacent portions of South
Central Pennsylvania. Otherwise, the probability for widespread
hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report measured wind gusts and any wind
damage.

PAZ004-005-160845-
Warren-McKean-
432 AM EDT Tue Apr 15 2025

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Lake enhanced snow showers will likely bring a coating to 2
inches of snow accumulation late today into Wednesday morning.
Locally higher amounts of around 3 inches area possible in the
snowbelt of Northwest Warren County.

in addition, westerly wind gusts of 30 to 40 mph are likely from
late this morning through tonight and into Wednesday.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report measured wind gusts and any wind
damage. Also report any snow accumulation.

Lambert

In the hours before

Special weather statement, Apr 15, 3:56 PM EDT, 1 hour 9 minutes before
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Local storm report, Apr 15, 4:02 PM EDT, 1 hour 3 minutes before
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Local storm report, Apr 15, 4:03 PM EDT, 1 hour 2 minutes before
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Local storm report, Apr 15, 4:26 PM EDT, 39 minutes before
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Local storm report, Apr 15, 4:37 PM EDT, 28 minutes before
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Special weather statement, Apr 15, 4:45 PM EDT, 20 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 10:39 PM EDTSpecial Weather StatementCTPPotter36 min
Apr 14, 11:01 PM EDTSpecial Weather StatementCTPElk29 min
Apr 14, 11:02 PM EDTSpecial Weather StatementCTPClearfield43 min
Apr 14, 11:05 PM EDTSpecial Weather StatementCTPTioga55 min
Apr 15, 12:21 AM EDTSpecial Weather StatementCTPMontour24 min
Apr 15, 12:41 AM EDTSpecial Weather StatementCTPMontour49 min
Apr 15, 12:09 PM EDTSpecial Weather StatementCTPMcKean36 min
Apr 15, 12:20 PM EDTSpecial Weather StatementCTPSullivan25 min
Apr 15, 12:22 PM EDTSpecial Weather StatementCTPPotter53 min
Apr 15, 12:34 PM EDTSpecial Weather StatementCTPClearfield41 min
Apr 15, 1:10 PM EDTSpecial Weather StatementCTPTioga65 min
Apr 15, 1:11 PM EDTSpecial Weather StatementCTPCambria34 min
Apr 15, 1:12 PM EDTSpecial Weather StatementCTPCentre, Clinton, Lycoming63 min
Apr 15, 1:28 PM EDTSpecial Weather StatementCTPBlair, Centre, Huntingdon, Mifflin62 min
Apr 15, 1:35 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Mifflin25 min
Apr 15, 1:58 PM EDTSevere Thunderstorm WarningCTPCentre, Juniata, Mifflin, Snyder, Union32 min
Apr 15, 2:08 PM EDTSpecial Weather StatementCTPMontour, Northumberland, Union37 min
Apr 15, 2:25 PM EDTSpecial Weather StatementCTPJuniata, Northumberland, Snyder35 min
Apr 15, 2:39 PM EDTSpecial Weather StatementCTPCentre36 min
Apr 15, 2:56 PM EDTSpecial Weather StatementCTPFranklin34 min
Apr 15, 3:09 PM EDTSevere Thunderstorm WarningCTPAdams, Franklin51 min
Apr 15, 3:18 PM EDTSpecial Weather StatementCTPLebanon27 min
Apr 15, 3:56 PM EDTSpecial Weather StatementCTPYork34 min
Apr 15, 4:45 PM EDTSpecial Weather StatementCTPDauphin, Lebanon30 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.