Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 83, NWS State College, PA

June 6, 2010Centre County, Clearfield County, Clinton County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 6, 2010, 9:23 AM EDT for Centre County, Clearfield County, Clinton County, Pennsylvania. It was in force for 67 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: Jun 6, 2010, 9:23 AM EDT (13:23 UTC)
Expired: Jun 6, 2010, 10:30 AM EDT
In force: 67 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Centre County, PA, Clearfield County, PA, Clinton County, PA

The radar

The State College radar (KCCX), 14 km from the middle of the area, began a volume at 13:24 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
Jun 6, 7:51 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 1.4 hours before the alert went out and 193 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: 1527 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 639 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 373 m²/s²
0-3 km storm-relative helicity: 434 m²/s²
Significant tornado parameter: 3.8
Supercell composite: 15.8

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 Jun 6, 8:58 AM EDT, 25 minutes earlier.

Area forecast discussion, Jun 6, 8:58 AM EDT, 25 minutes before

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Hazardous weather outlook, Jun 6, 8:12 AM EDT, 1 hour 11 minutes before

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In the hours before

Special weather statement, Jun 6, 8:04 AM EDT, 1 hour 19 minutes before

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Local storm report, Jun 6, 8:20 AM EDT, 1 hour 3 minutes before

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Special weather statement, Jun 6, 8:41 AM EDT, 42 minutes before

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Special weather statement, Jun 6, 8:50 AM EDT, 33 minutes before

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Special weather statement, Jun 6, 9:03 AM EDT, 20 minutes before

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Local storm report, Jun 6, 9:06 AM EDT, 17 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
Jun 5, 8:10 PM EDT	Special Weather Statement	CTP	Adams	35 min
Jun 5, 8:41 PM EDT	Special Weather Statement	CTP	York	34 min
Jun 6, 1:58 AM EDT	Special Weather Statement	CTP	Warren	62 min
Jun 6, 2:06 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter, Warren	69 min
Jun 6, 4:10 AM EDT	Special Weather Statement	CTP	Sullivan	35 min
Jun 6, 6:02 AM EDT	Special Weather Statement	CTP	Warren	43 min
Jun 6, 6:16 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	44 min
Jun 6, 6:33 AM EDT	Tornado Warning	CTP	McKean, Warren	42 min
Jun 6, 6:40 AM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean, Warren	65 min
Jun 6, 7:15 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	45 min
Jun 6, 7:41 AM EDT	Areal Flood Advisory	CTP	McKean, Potter	109 min
Jun 6, 7:53 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter, Tioga	67 min
Jun 6, 8:04 AM EDT	Special Weather Statement	CTP	Elk	41 min
Jun 6, 8:41 AM EDT	Special Weather Statement	CTP	Cameron, Elk	34 min
Jun 6, 8:50 AM EDT	Special Weather Statement	CTP	Clearfield	55 min
Jun 6, 9:03 AM EDT	Special Weather Statement	CTP	Tioga	42 min
Jun 6, 9:34 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Columbia, Lycoming and 2 more	86 min
Jun 6, 10:13 AM EDT	Special Weather Statement	CTP	Somerset	77 min
Jun 6, 10:29 AM EDT	Special Weather Statement	CTP	Centre, Union	91 min
Jun 6, 11:31 AM EDT	Special Weather Statement	CTP	Blair, Columbia, Huntingdon, Juniata, Mifflin, Montour and 4 more	59 min
Jun 6, 11:48 AM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Snyder, Union	57 min
Jun 6, 12:23 PM EDT	Special Weather Statement	CTP	Bedford, Cumberland, Dauphin, Huntingdon, Juniata, Perry and 1 more	52 min
Jun 6, 12:48 PM EDT	Special Weather Statement	CTP	Northumberland	27 min
Jun 6, 1:14 PM EDT	Special Weather Statement	CTP	Cumberland, Dauphin, Franklin, Lebanon, Perry, Schuylkill	61 min
Jun 6, 2:22 PM EDT	Special Weather Statement	CTP	Lebanon	23 min
Jun 6, 2:44 PM EDT	Special Weather Statement	CTP	Lancaster	16 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2010 Every severe thunderstorm warning in 2010

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.