Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 34, NWS State College, PA

May 14, 2010Cumberland County, York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 14, 2010, 5:15 PM EDT for Cumberland County, York County, Pennsylvania. It was in force for 45 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: May 14, 2010, 5:15 PM EDT (21:15 UTC)
Expired: May 14, 2010, 6:00 PM EDT
In force: 45 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Cumberland County, PA, York County, PA

The radar

The Sterling radar (KLWX), 126 km from the middle of the area, began a volume at 21:18 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
May 14, 2:29 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.3 hours before the alert went out and 100 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 557 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 May 14, 4:14 PM EDT, 1 hour 1 minute earlier.

Area forecast discussion, May 14, 4:14 PM EDT, 1 hour 1 minute before

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Hazardous weather outlook, May 14, 2:43 PM EDT, 2 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
243 PM EDT FRI MAY 14 2010

PAZ004>006-010>012-017>019-037-041-042-045-046-049-151845-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-TIOGA-NORTHERN LYCOMING-SULLIVAN-
SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-
243 PM EDT FRI MAY 14 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

PAZ024>028-033>036-050>053-056>059-063>066-151845-
CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON-
FRANKLIN-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-
SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
243 PM EDT FRI MAY 14 2010

...SEVERE THUNDERSTORM WATCH 173 IN EFFECT UNTIL 9 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.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH EARLY THIS EVENING.

LAMBERT

In the hours before

Local storm report, May 14, 4:21 PM EDT, 54 minutes before

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Special weather statement, May 14, 4:35 PM EDT, 40 minutes before

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Special weather statement, May 14, 4:40 PM EDT, 35 minutes before

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Local storm report, May 14, 4:52 PM EDT, 23 minutes before

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Special weather statement, May 14, 4:53 PM EDT, 22 minutes before

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Special weather statement, May 14, 5:05 PM EDT, 10 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
May 14, 12:11 AM EDT	Special Weather Statement	CTP	Elk	49 min
May 14, 3:33 AM EDT	Special Weather Statement	CTP	Warren	27 min
May 14, 5:47 AM EDT	Special Weather Statement	CTP	Cameron, Clearfield, Elk	28 min
May 14, 6:04 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	41 min
May 14, 6:35 AM EDT	Special Weather Statement	CTP	Clinton	25 min
May 14, 9:00 AM EDT	Special Weather Statement	CTP	Bedford	45 min
May 14, 11:50 AM EDT	Special Weather Statement	CTP	Bedford, Franklin	25 min
May 14, 12:52 PM EDT	Special Weather Statement	CTP	Cumberland	23 min
May 14, 1:10 PM EDT	Special Weather Statement	CTP	Franklin	35 min
May 14, 1:58 PM EDT	Special Weather Statement	CTP	Columbia, Montour, Union	32 min
May 14, 2:59 PM EDT	Special Weather Statement	CTP	Blair, Cambria, Huntingdon	46 min
May 14, 3:04 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Huntingdon	41 min
May 14, 3:19 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon	41 min
May 14, 3:32 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	58 min
May 14, 3:55 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Huntingdon, Juniata, Mifflin, Perry	50 min
May 14, 4:20 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Huntingdon, Juniata, Perry	70 min
May 14, 4:24 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Perry, Schuylkill	57 min
May 14, 4:35 PM EDT	Special Weather Statement	CTP	Somerset	25 min
May 14, 4:40 PM EDT	Special Weather Statement	CTP	Fulton	35 min
May 14, 4:53 PM EDT	Special Weather Statement	CTP	Schuylkill	22 min
May 14, 4:58 PM EDT	Tornado Warning	CTP	Cumberland	32 min
May 14, 5:05 PM EDT	Special Weather Statement	CTP	Bedford	25 min
May 14, 5:28 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	31 min
May 14, 5:30 PM EDT	Special Weather Statement	CTP	Fulton	30 min
May 14, 5:36 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, York	3 hr
May 14, 5:41 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, York	64 min
May 14, 6:00 PM EDT	Special Weather Statement	CTP	Adams	30 min
May 14, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	75 min
May 14, 6:09 PM EDT	Special Weather Statement	CTP	Franklin	36 min
May 14, 6:12 PM EDT	Special Weather Statement	CTP	Somerset	33 min
May 14, 6:24 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	51 min
May 14, 6:55 PM EDT	Special Weather Statement	CTP	Adams	35 min
May 14, 7:16 PM EDT	Special Weather Statement	CTP	York	29 min
May 14, 7:26 PM EDT	Areal Flood Advisory	CTP	Lancaster	2 hr
May 14, 7:42 PM EDT	Special Weather Statement	CTP	Blair	33 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.