Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 7, NWS State College, PA

April 1, 20235 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 1, 2023, 4:50 PM EDT for 5 counties in 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 1, 2023, 4:50 PM EDT (20:50 UTC)
Expired: Apr 1, 2023, 5:30 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 Cumberland County, PA, Dauphin County, PA, Lancaster County, PA, Lebanon County, PA, York County, PA

The radar

The State College radar (KCCX), 138 km from the middle of the area, began a volume at 20:51 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
Apr 1, 2:27 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.8 hours before the alert went out and 150 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 648 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 448 m²/s²
0-3 km storm-relative helicity: 443 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 1, 3:52 PM EDT, 58 minutes earlier.

Area forecast discussion, Apr 1, 3:52 PM EDT, 58 minutes before

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Hazardous weather outlook, Apr 1, 2:36 PM EDT, 2 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
236 PM EDT Sat Apr 1 2023

PAZ025>028-034>036-056-057-059-063>066-021845-
Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton-Franklin-Perry-
Dauphin-Lebanon-Cumberland-Adams-York-Lancaster-
236 PM EDT Sat Apr 1 2023

...HIGH WIND WARNING IN EFFECT UNTIL 2 AM EDT SUNDAY...
...SEVERE THUNDERSTORM WATCH 107 IN EFFECT UNTIL 8 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.

   High Wind Warning.
   Severe Thunderstorm Watch.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ012-018-019-037-041-042-045-046-049>053-058-021845-
Northern Clinton-Northern Centre-Southern Centre-Tioga-
Northern Lycoming-Sullivan-Southern Clinton-Southern Lycoming-Union-
Snyder-Montour-Northumberland-Columbia-Schuylkill-
236 PM EDT Sat Apr 1 2023

...WIND ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
...SEVERE THUNDERSTORM WATCH 107 IN EFFECT UNTIL 8 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.
   Wind Advisory.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ024-033-021845-
Cambria-Somerset-
236 PM EDT Sat Apr 1 2023

...HIGH WIND WARNING IN EFFECT UNTIL 2 AM EDT SUNDAY...
...SEVERE THUNDERSTORM WATCH 105 IN EFFECT UNTIL 6 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.

   High Wind Warning.
   Severe Thunderstorm Watch.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004>006-010-011-017-021845-
Warren-McKean-Potter-Elk-Cameron-Clearfield-
236 PM EDT Sat Apr 1 2023

...WIND ADVISORY IN EFFECT UNTIL 2 AM EDT SUNDAY...
...SEVERE THUNDERSTORM WATCH 105 IN EFFECT UNTIL 6 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.
   Wind Advisory.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

Lambert

In the hours before

Local storm report, Apr 1, 4:03 PM EDT, 47 minutes before

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Local storm report, Apr 1, 4:09 PM EDT, 41 minutes before

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Special weather statement, Apr 1, 4:13 PM EDT, 37 minutes before

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Special weather statement, Apr 1, 4:25 PM EDT, 25 minutes before

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Local storm report, Apr 1, 4:28 PM EDT, 22 minutes before

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Local storm report, Apr 1, 4:29 PM EDT, 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 1:33 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	Warren	72 min
Apr 1, 2:07 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	Cambria, Somerset	53 min
Apr 1, 2:18 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	Cameron, Clearfield, Elk, McKean	57 min
Apr 1, 2:50 PM EDT	Special Weather Statement	CTP	Bedford, Blair	25 min
Apr 1, 3:07 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	Centre, Clinton, Potter	53 min
Apr 1, 3:11 PM EDT	Special Weather Statement	CTP	Huntingdon, Mifflin	49 min
Apr 1, 3:26 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	Cambria	34 min
Apr 1, 3:31 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	Lycoming, Tioga	59 min
Apr 1, 3:44 PM EDT	Special Weather Statement	CTP	Blair	16 min
Apr 1, 3:57 PM EDT	Special Weather Statement	CTP	Blair	48 min
Apr 1, 4:13 PM EDT	Special Weather Statement	CTP	Clearfield	47 min
Apr 1, 4:25 PM EDT	Special Weather Statement	CTP	Blair, Cambria	50 min
Apr 1, 5:16 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Dauphin, Lancaster, Lebanon, Schuylkill, York	74 min
Apr 1, 5:47 PM EDT	Special Weather Statement	CTP	Adams, Franklin	43 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023 Every 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.