Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 185, NWS State College, PA

September 22, 2024Adams County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Sep 22, 2024, 1:08 AM EDT for Adams County, York County, Pennsylvania. It was in force for 22 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: Sep 22, 2024, 1:08 AM EDT (05:08 UTC)
Expired: Sep 22, 2024, 1:30 AM EDT
In force: 22 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Adams County, PA, York County, PA

The radar

The Sterling radar (KLWX), 111 km from the middle of the area, began a volume at 05:08 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

Pittsburgh, PA (KPIT), launched 00:00Z, 5.1 hours before the alert went out and 272 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: 5 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 2217 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 82 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 Sep 22, 12:35 AM EDT, 33 minutes earlier.

Area forecast discussion, Sep 22, 12:35 AM EDT, 33 minutes before

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Hazardous weather outlook, Sep 21, 11:50 PM EDT, 1 hour 18 minutes before

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In the hours before

Local storm report, Sep 22, 12:27 AM EDT, 41 minutes before

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Local storm report, Sep 22, 12:44 AM EDT, 24 minutes before

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Special weather statement, Sep 22, 12:46 AM EDT, 22 minutes before

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Local storm report, Sep 22, 1:03 AM EDT, 5 minutes before

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Local storm report, Sep 22, 1:07 AM EDT, 1 minute before

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Local storm report, Sep 22, 1:08 AM EDT, 0 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
Sep 21, 8:00 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, McKean, Potter	45 min
Sep 21, 8:10 PM EDT	Special Weather Statement	CTP	Warren	35 min
Sep 21, 8:40 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	50 min
Sep 21, 8:56 PM EDT	Special Weather Statement	CTP	Clinton	34 min
Sep 21, 8:59 PM EDT	Special Weather Statement	CTP	Cameron	31 min
Sep 21, 9:14 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	46 min
Sep 21, 9:17 PM EDT	Special Weather Statement	CTP	Cameron	28 min
Sep 21, 9:26 PM EDT	Special Weather Statement	CTP	Clinton	34 min
Sep 21, 9:39 PM EDT	Special Weather Statement	CTP	Elk	36 min
Sep 21, 9:44 PM EDT	Special Weather Statement	CTP	Cameron	31 min
Sep 21, 9:49 PM EDT	Areal Flood Advisory	CTP	Dauphin	2 hr
Sep 21, 9:58 PM EDT	Special Weather Statement	CTP	Clinton	32 min
Sep 21, 10:00 PM EDT	Flash Flood Warning	CTP	Dauphin	110 min
Sep 21, 10:08 PM EDT	Special Weather Statement	CTP	Northumberland	37 min
Sep 21, 10:15 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin	45 min
Sep 21, 10:21 PM EDT	Areal Flood Advisory	CTP	Montour, Northumberland, Union	2 hr
Sep 21, 10:37 PM EDT	Flash Flood Warning Considerable damage threat	CTP	Dauphin	113 min
Sep 21, 10:44 PM EDT	Flash Flood Warning	CTP	Northumberland, Union	2 hr
Sep 21, 10:52 PM EDT	Areal Flood Advisory	CTP	Dauphin, York	2 hr
Sep 21, 10:53 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, York	52 min
Sep 21, 10:58 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Northumberland, Schuylkill, Snyder	32 min
Sep 21, 11:11 PM EDT	Areal Flood Advisory	CTP	Northumberland, Snyder, Union	2 hr
Sep 21, 11:21 PM EDT	Special Weather Statement	CTP	Lebanon	24 min
Sep 21, 11:28 PM EDT	Special Weather Statement	CTP	Dauphin, Juniata, Lebanon, Perry	62 min
Sep 21, 11:40 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	50 min
Sep 21, 11:50 PM EDT	Areal Flood Warning	CTP	Dauphin	115 min
Sep 21, 11:59 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon	28 min
Sep 22, 12:11 AM EDT	Areal Flood Advisory	CTP	Dauphin, Northumberland	94 min
Sep 22, 12:21 AM EDT	Special Weather Statement	CTP	Adams, Cumberland, York	54 min
Sep 22, 12:36 AM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, York	91 min
Sep 22, 12:39 AM EDT	Areal Flood Advisory	CTP	Lancaster	81 min
Sep 22, 12:46 AM EDT	Special Weather Statement	CTP	Cumberland	29 min
Sep 22, 1:18 AM EDT	Areal Flood Advisory	CTP	Adams, York	89 min
Sep 22, 1:32 AM EDT	Special Weather Statement	CTP	Adams	28 min
Sep 22, 2:35 AM EDT	Dense Fog Advisory	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 6 more	6 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2024 Every severe thunderstorm warning in 2024

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.