Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 127, NWS State College, PA

August 24, 2020Lycoming County, Tioga County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 24, 2020, 1:53 PM EDT for Lycoming County, Tioga County, Pennsylvania. It was in force for 36 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 24, 2020, 1:53 PM EDT (17:53 UTC)
Expired: Aug 24, 2020, 2:29 PM EDT
In force: 36 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Lycoming County, PA, Tioga County, PA

The radar

The State College radar (KCCX), 100 km from the middle of the area, began a volume at 17:54 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, 5.9 hours before the alert went out and 291 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: 1012 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.5

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 24, 12:44 PM EDT, 1 hour 9 minutes earlier.

Area forecast discussion, Aug 24, 12:44 PM EDT, 1 hour 9 minutes before

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Hazardous weather outlook, Aug 24, 12:28 PM EDT, 1 hour 25 minutes before

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In the hours before

Special weather statement, Aug 24, 12:25 PM EDT, 1 hour 28 minutes before

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Special weather statement, Aug 24, 12:55 PM EDT, 58 minutes before

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Special weather statement, Aug 24, 1:02 PM EDT, 51 minutes before

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Special weather statement, Aug 24, 1:16 PM EDT, 37 minutes before

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Special weather statement, Aug 24, 1:49 PM EDT, 4 minutes before

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Special weather statement, Aug 24, 1:51 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.

Issued	Product	Office	Counties	Lasted
Aug 24, 11:49 AM EDT	Special Weather Statement	CTP	Cameron	26 min
Aug 24, 12:25 PM EDT	Special Weather Statement	CTP	Cameron	35 min
Aug 24, 12:55 PM EDT	Special Weather Statement	CTP	Tioga	35 min
Aug 24, 1:02 PM EDT	Special Weather Statement	CTP	Clearfield	43 min
Aug 24, 1:16 PM EDT	Special Weather Statement	CTP	Bedford	29 min
Aug 24, 1:49 PM EDT	Special Weather Statement	CTP	Lycoming	26 min
Aug 24, 1:51 PM EDT	Special Weather Statement	CTP	Centre	24 min
Aug 24, 1:58 PM EDT	Special Weather Statement	CTP	Fulton	32 min
Aug 24, 2:32 PM EDT	Special Weather Statement	CTP	Franklin	28 min
Aug 24, 2:45 PM EDT	Special Weather Statement	CTP	Perry	30 min
Aug 24, 2:47 PM EDT	Special Weather Statement	CTP	Lycoming	28 min
Aug 24, 3:16 PM EDT	Special Weather Statement	CTP	Huntingdon	29 min
Aug 24, 3:18 PM EDT	Special Weather Statement	CTP	Columbia, Montour	27 min
Aug 24, 3:29 PM EDT	Special Weather Statement	CTP	Columbia	31 min
Aug 24, 3:41 PM EDT	Special Weather Statement	CTP	Dauphin	34 min
Aug 24, 4:05 PM EDT	Special Weather Statement	CTP	Potter	25 min
Aug 24, 4:07 PM EDT	Special Weather Statement	CTP	Schuylkill	23 min
Aug 24, 4:30 PM EDT	Areal Flood Advisory	CTP	Northumberland, Schuylkill	3 hr
Aug 24, 4:58 PM EDT	Special Weather Statement	CTP	Schuylkill	62 min
Aug 24, 6:27 PM EDT	Special Weather Statement	CTP	Cameron	48 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2020 Every severe thunderstorm warning in 2020

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.