Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 120, NWS State College, PA

July 7, 2013Sullivan County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 7, 2013, 5:36 PM EDT for Sullivan County, Pennsylvania. It was in force for 54 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: Jul 7, 2013, 5:36 PM EDT (21:36 UTC)
Expired: Jul 7, 2013, 6:30 PM EDT
In force: 54 min
Issued by: NWS State College, PA
Area: Storm-based polygon

County Sullivan County, PA

The radar

The Binghamton radar (KBGM), 95 km from the middle of the area, began a volume at 21:36 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
Jul 7, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 9.6 hours before the alert went out and 261 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: 169 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1029 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Jul 7, 5:36 PM EDT, 0 minutes earlier.

Area forecast discussion, Jul 7, 5:36 PM EDT, 0 minutes before

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Hazardous weather outlook, Jul 7, 5:15 PM EDT, 21 minutes before

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In the hours before

Special weather statement, Jul 7, 5:13 PM EDT, 23 minutes before

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Local storm report, Jul 7, 5:15 PM EDT, 21 minutes before

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Local storm report, Jul 7, 5:16 PM EDT, 20 minutes before

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Local storm report, Jul 7, 5:22 PM EDT, 14 minutes before

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Local storm report, Jul 7, 5:25 PM EDT, 11 minutes before

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Local storm report, Jul 7, 5:29 PM EDT, 7 minutes before

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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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
Jul 6, 10:03 PM EDT	Special Weather Statement	CTP	Elk	27 min
Jul 6, 10:30 PM EDT	Special Weather Statement	CTP	Elk	30 min
Jul 7, 12:46 PM EDT	Special Weather Statement	CTP	Somerset	59 min
Jul 7, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	62 min
Jul 7, 1:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	65 min
Jul 7, 1:58 PM EDT	Areal Flood Advisory	CTP	Bedford, Somerset	2 hr
Jul 7, 2:25 PM EDT	Flash Flood Warning	CTP	Bedford, Somerset	3 hr
Jul 7, 2:30 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield	45 min
Jul 7, 2:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Fulton, Huntingdon	50 min
Jul 7, 2:46 PM EDT	Areal Flood Advisory	CTP	Blair, Cambria, Centre, Fulton, Huntingdon	3 hr
Jul 7, 3:12 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield, Clinton, Huntingdon	63 min
Jul 7, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	58 min
Jul 7, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Huntingdon, Juniata, Mifflin, Perry	55 min
Jul 7, 3:51 PM EDT	Special Weather Statement	CTP	Cumberland	54 min
Jul 7, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Dauphin, Juniata, Mifflin, Northumberland, Perry and 2 more	54 min
Jul 7, 4:20 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Union	55 min
Jul 7, 4:30 PM EDT	Special Weather Statement	CTP	Adams	45 min
Jul 7, 4:45 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 2 more	60 min
Jul 7, 5:05 PM EDT	Areal Flood Advisory	CTP	Lycoming	115 min
Jul 7, 5:10 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	65 min
Jul 7, 5:13 PM EDT	Special Weather Statement	CTP	York	32 min
Jul 7, 5:32 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	73 min
Jul 7, 5:40 PM EDT	Areal Flood Advisory	CTP	Sullivan	2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2013 Every severe thunderstorm warning in 2013

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.