Alert archive / Pennsylvania / Tornado Warnings in 2007

Tornado Warning 4, NWS State College, PA

June 19, 2007Clearfield County, Pennsylvania

NWS State College, PA issued this tornado warning at Jun 19, 2007, 8:08 PM EDT for Clearfield County, Pennsylvania. It was in force for 22 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 19, 2007, 8:08 PM EDT (00:08 UTC)
Expired: Jun 19, 2007, 8:30 PM EDT
In force: 22 min
Issued by: NWS State College, PA
Area: Counties, with a storm outline in the text

County Clearfield County, PA

The radar

The State College radar (KCCX), 23 km from the middle of the area, began a volume at 00:09 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.

What was reported inside it

Time	Report	Where	Remark
Jun 19, 8:10 PM EDT	TSTM WND DMG	Lecontes Mills, PA	911 CENTER REPORTED MULTIPLE TREES DOWN ALONG ROUTE 879 FROM LECONTES MILLS TO KARTHAUS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 19, 12:19 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 0.1 hours before the alert went out and 179 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: 55 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 577 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS51 KCTP 200008
TORCTP
PAC033-200030-
/O.NEW.KCTP.TO.W.0004.070620T0008Z-070620T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
808 PM EDT TUE JUN 19 2007

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL CLEARFIELD COUNTY IN CENTRAL PENNSYLVANIA...

* UNTIL 830 PM EDT

* AT 805 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LECONTES
  MILLS...OR 12 MILES EAST OF CLEARFIELD...MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
 RURAL EASTERN CLEARFIELD COUNTY...

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...
I-80 BETWEEN MILE MARKERS 125 AND 133.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

IF YOU ARE IN THE PATH OF THIS STORM...MOVE INDOORS IMMEDIATELY.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. STAY AWAY FROM WINDOWS.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.

LAT...LON 4118 7830 4117 7806 4113 7806 4111 7813
      4109 7811 4107 7810 4105 7808 4099 7809
      4100 7830 4101 7831

$$

FORECASTER:

The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 8:18 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton	57 min
Jun 19, 11:44 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	31 min

Nearby

Tornado Warnings in Pennsylvania, 2007 Every tornado warning in 2007 Tornadoes in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.