Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 116, NWS State College, PA

August 4, 2023Centre County, Huntingdon County, Mifflin County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 4, 2023, 3:47 PM EDT for Centre County, Huntingdon County, Mifflin 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: Aug 4, 2023, 3:47 PM EDT (19:47 UTC)
Expired: Aug 4, 2023, 4:18 PM EDT
In force: 31 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Centre County, PA, Huntingdon County, PA, Mifflin County, PA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 4, 12:10 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.8 hours before the alert went out and 264 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: 1103 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 734 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.1

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 Aug 4, 2:45 PM EDT, 1 hour 2 minutes earlier.

Area forecast discussion, Aug 4, 2:45 PM EDT, 1 hour 2 minutes before

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Hazardous weather outlook, Aug 4, 12:13 PM EDT, 3 hours 34 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
1213 PM EDT Fri Aug 4 2023

PAZ006-012-018-019-027-028-037-041-042-045-046-049>053-056>058-
051615-
Potter-Northern Clinton-Northern Centre-Southern Centre-Mifflin-
Juniata-Tioga-Northern Lycoming-Sullivan-Southern Clinton-
Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia-Perry-
Dauphin-Schuylkill-
1213 PM EDT Fri Aug 4 2023

...SEVERE THUNDERSTORM WATCH 584 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.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Severe thunderstorms with damaging winds 60 mph or greater and
large hail exceeding 1 inch in diameter are possible in a few spots
Monday afternoon or early evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ011-051615-
Cameron-
1213 PM EDT Fri Aug 4 2023

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Strong thunderstorms with gusty winds and small hail are possible
this afternoon or early evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Severe thunderstorms with damaging winds 60 mph or greater and
large hail exceeding 1 inch in diameter are possible in a few spots
Monday afternoon or early evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ004-005-010-017-024-033>036-063>066-051615-
Warren-McKean-Elk-Clearfield-Cambria-Somerset-Bedford-Fulton-
Franklin-Cumberland-Adams-York-Lancaster-
1213 PM EDT Fri Aug 4 2023

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Strong thunderstorms with gusty winds and small hail are possible
this afternoon or early evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Severe thunderstorms with damaging winds 60 mph or greater and
large hail exceeding 1 inch in diameter are possible in a few spots
Monday afternoon or early evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ025-026-059-051615-
Blair-Huntingdon-Lebanon-
1213 PM EDT Fri Aug 4 2023

...SEVERE THUNDERSTORM WATCH 584 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.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Severe thunderstorms with damaging winds 60 mph or greater and
large hail exceeding 1 inch in diameter are possible in a few spots
Monday afternoon or early evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Aug 4, 2:57 PM EDT, 50 minutes before

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Special weather statement, Aug 4, 3:00 PM EDT, 47 minutes before

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Special weather statement, Aug 4, 3:05 PM EDT, 42 minutes before

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Special weather statement, Aug 4, 3:09 PM EDT, 38 minutes before

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Special weather statement, Aug 4, 3:18 PM EDT, 29 minutes before

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Local storm report, Aug 4, 3:27 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.

Issued	Product	Office	Counties	Lasted
Aug 4, 1:01 PM EDT	Special Weather Statement	CTP	Potter	44 min
Aug 4, 1:12 PM EDT	Special Weather Statement	CTP	Tioga	48 min
Aug 4, 1:16 PM EDT	Special Weather Statement	CTP	Cameron	59 min
Aug 4, 1:36 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	39 min
Aug 4, 1:44 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	46 min
Aug 4, 1:53 PM EDT	Special Weather Statement	CTP	Clinton	37 min
Aug 4, 2:11 PM EDT	Special Weather Statement	CTP	Lycoming	49 min
Aug 4, 2:11 PM EDT	Special Weather Statement	CTP	Clearfield	34 min
Aug 4, 2:16 PM EDT	Special Weather Statement	CTP	Cambria	29 min
Aug 4, 2:19 PM EDT	Special Weather Statement	CTP	Lycoming	41 min
Aug 4, 2:27 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	48 min
Aug 4, 2:41 PM EDT	Special Weather Statement	CTP	Centre	34 min
Aug 4, 3:00 PM EDT	Special Weather Statement	CTP	Lycoming	30 min
Aug 4, 3:05 PM EDT	Special Weather Statement	CTP	Blair	40 min
Aug 4, 3:09 PM EDT	Special Weather Statement	CTP	Snyder	51 min
Aug 4, 3:11 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Northumberland, Union	49 min
Aug 4, 3:16 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Juniata, Mifflin, Snyder, Union	59 min
Aug 4, 3:18 PM EDT	Special Weather Statement	CTP	Centre	42 min
Aug 4, 3:50 PM EDT	Special Weather Statement	CTP	Lycoming	40 min
Aug 4, 3:58 PM EDT	Special Weather Statement	CTP	Montour	32 min
Aug 4, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill	17 min
Aug 4, 4:19 PM EDT	Special Weather Statement	CTP	Perry	41 min
Aug 4, 4:39 PM EDT	Special Weather Statement	CTP	Cumberland	36 min
Aug 4, 4:55 PM EDT	Special Weather Statement	CTP	Dauphin	35 min
Aug 4, 4:58 PM EDT	Special Weather Statement	CTP	Clinton	32 min
Aug 4, 5:08 PM EDT	Special Weather Statement	CTP	Cumberland	52 min
Aug 4, 5:23 PM EDT	Special Weather Statement	CTP	Union	52 min
Aug 4, 5:29 PM EDT	Special Weather Statement	CTP	Lebanon	31 min
Aug 4, 5:48 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, York	42 min
Aug 4, 6:04 PM EDT	Special Weather Statement	CTP	Lycoming	26 min
Aug 4, 6:15 PM EDT	Special Weather Statement	CTP	Huntingdon	30 min
Aug 4, 6:24 PM EDT	Special Weather Statement	CTP	Mifflin	36 min
Aug 4, 6:27 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Huntingdon, Juniata, Mifflin, Perry	48 min
Aug 4, 6:30 PM EDT	Special Weather Statement	CTP	Lycoming	30 min
Aug 4, 7:18 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	42 min
Aug 4, 7:56 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	33 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.