Alert archive / Pennsylvania / Tornado Warnings in 2007

Tornado Warning 12, NWS State College, PA

September 26, 2007Warren County, Pennsylvania

NWS State College, PA issued this tornado warning at Sep 26, 2007, 5:53 PM EDT for Warren County, Pennsylvania. It was in force for 52 min. 4 reports 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: Sep 26, 2007, 5:53 PM EDT (21:53 UTC)
Expired: Sep 26, 2007, 6:45 PM EDT
In force: 52 min
Issued by: NWS State College, PA
Area: Counties, with a storm outline in the text

County Warren County, PA

The radar

The Buffalo radar (KBUF), 129 km from the middle of the area, began a volume at 21:53 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
Sep 26, 6:00 PM EDT	TORNADO	2 Ne Tidioute, PA	NWS STORM SURVEY CONFIRMED EF1 TORNADO JUST NORTHEAST OF TIDIOUTE. PEAK WINDS ESTIMATED AT 90-100 MPH. SEVERAL HUNTING CABINS AND UNINHABITED DWELLINGS WERE DAMAGED. HUNDREDS OF TREES TOPPLED.
Sep 26, 6:08 PM EDT	FUNNEL CLOUD	3 Wsw Clarendon, PA	FUNNEL CLOUD SPOTTED AT CHAPMAN STATE PARK.
Sep 26, 6:10 PM EDT	HAIL 0.75	Clarendon, PA	PENNY-SIZE HAIL REPORTED IN CLARENDON.
Sep 26, 6:20 PM EDT	FUNNEL CLOUD	Warren, PA	THREE FUNNEL CLOUDS SPOTTED OVER WARREN.

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

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.9 hours before the alert went out and 128 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: 424 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 670 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KCTP 262153
TORCTP
PAC123-262245-
/O.NEW.KCTP.TO.W.0012.070926T2153Z-070926T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
553 PM EDT WED SEP 26 2007

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  WARREN COUNTY IN NORTH CENTRAL PENNSYLVANIA...

* UNTIL 645 PM EDT

* AT 550 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES EAST OF
  GRAND VALLEY...OR 17 MILES SOUTHWEST OF WARREN...MOVING NORTHEAST
  AT 35 MPH.

* THE TORNADO WILL BE NEAR...
  YOUNGSVILLE AROUND 605 PM EDT...
  CHAPMAN STATE PARK AROUND 610 PM EDT...
  WARREN AROUND 615 PM EDT...
  RUSSELL AROUND 625 PM EDT...

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

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 4202 7901 4201 7900 4200 7892 4185 7892
      4183 7896 4177 7896 4161 7937 4162 7938
      4162 7946 4174 7956
TIME...MOT...LOC 2153Z 239DEG 33KT 4171 7939

$$

FORECASTER: DEVOIR

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 26, 5:12 PM EDT	Flash Flood Warning	CTP	Lancaster	5 hr
Sep 26, 5:40 PM EDT	Severe Thunderstorm Warning	CTP	Warren	65 min
Sep 26, 6:15 PM EDT	Severe Thunderstorm Warning	CTP	McKean	60 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.