Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 78, NWS State College, PA

June 6, 20105 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 6, 2010, 2:06 AM EDT for 5 counties in Pennsylvania. It was in force for 69 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, 2:06 AM EDT (06:06 UTC)
Expired: Jun 6, 2010, 3:15 AM EDT
In force: 69 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Cameron County, PA, Elk County, PA, McKean County, PA, Potter County, PA, Warren County, PA

The radar

The State College radar (KCCX), 91 km from the middle of the area, began a volume at 06:07 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, 2:03 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 6.1 hours before the alert went out and 144 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: 8 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1466 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: -41 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

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, 1:47 AM EDT, 19 minutes earlier.

Area forecast discussion, Jun 6, 1:47 AM EDT, 19 minutes before

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Hazardous weather outlook, Jun 5, 10:32 PM EDT, 3 hours 34 minutes before

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In the hours before

Special weather statement, Jun 5, 8:10 PM EDT, 5 hours 56 minutes before

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Special weather statement, Jun 5, 8:41 PM EDT, 5 hours 25 minutes before

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Special weather statement, Jun 6, 1:58 AM EDT, 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
158 AM EDT SUN JUN 6 2010

PAZ004-005-060700-
MCKEAN PA-WARREN PA-
158 AM EDT SUN JUN 6 2010

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WARREN AND WESTERN
MCKEAN COUNTIES THROUGH 3 AM EDT...

AT 153 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR
WATERFORD TO 4 MILES SOUTHWEST OF SPARTANSBURG TO OIL CITY...MOVING
NORTHEAST AT 60 MPH.

WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS. EXPECT INTENSE LIGHTNING FROM THESE STORMS. DO NOT STAY IN
THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. THESE STORMS WILL BE NEAR
TIDIOUTE...SPRING CREEK...AND COLUMBUS AROUND 205 AM...LOTTSVILLE...
GARLAND...AND BEAR LAKE AROUND 210 AM...YOUNGSVILLE...AND SUGAR GROVE
AROUND 215 AM...CHAPMAN STATE PARK AROUND 220 AM AND WARREN AROUND
225 AM.

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62...
ROUTE 219...STATE ROAD 59...STATE ROAD 446.

LAT...LON 4200 7834 4197 7834 4162 7894 4163 7962
      4200 7962

FORECASTER: LAMBERT

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, 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, 9:23 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield, Clinton	67 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.