EF1 Tornado in Eastern Centre County - 7 August 2007
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Severe Weather of 7 August 2007
EF1 Tornado in Eastern Centre County

Summary:

A weak tornado occurred during the late evening of August 7th, 2007 over far Eastern Centre County, east of Woodward. Initial reports from that remote area described numerous trees down across Route 45 near the Centre/Union County line. A subsequent investigation and survey by the NWS Office in State College determined that the damage was caused by a weak (EF1) tornado. A Tornado Warning was in effect for the affected area from 10:05 PM EDT through 10:30 PM EDT.

Damage Map:

Damage Map - Areal Photo courtesy CentreMap.org, mapping of damage by Mike Connelly
Damage Map - Areal Photo courtesy CentreMap.org, mapping of damage by Mike Connelly

Radar Pictures and Weather Images:
Radar Reflectivity with pronounced hook echo(es)
Radar Reflectivity with pronounced hook echo(es)
Storm Relative Motion with VRshear calculation overlaid
Storm Relative Motion with VRshear calculation overlaid
00z PIT balloon sounding with good low level shear and stronger winds aloft
00z PIT balloon sounding with good low level shear and stronger winds aloft
IR Sat Pic with lightning overlaid
IR Sat Pic with lightning overlaid

Damage Pictures (from the Survey):

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damage pictures from Eastern Centre County on 7 Aug 2007

Damage Survey Results and Preliminary Reports

000
NOUS41 KCTP 082129
PNSCTP
PAZ019-090130-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
529 PM EDT WED AUG 8 2007

...FINAL DAMAGE SURVEY RESULTS FOR CENTRE COUNTY...

...AN EF1 TORNADO OCCURRED NEAR WOODWARD LATE TUESDAY EVENING IN
EASTERN CENTRE COUNTY...

THE FOLLOWING IS A FINAL ASSESSMENT FOR THE DAMAGE THAT OCCURRED
OVER EASTERN CENTRE COUNTY ON AUGUST 7, 2007.

* EVENT DATE: AUGUST 7, 2007

* ESTIMATED START TIME: 1025 PM

* ESTIMATED END TIME: 1030 PM

* EVENT TYPE: EF1 TORNADO

* EVENT LOCATION: FROM 2 MILES NORTHEAST OF WOODWARD TO 2 MILES
  EAST SOUTHEAST OF WOODWARD.

* PEAK WIND: ESTIMATED AT 85-95 MPH.

* AVERAGE PATH WIDTH: UP TO 400 YARDS WIDE.

* PATH LENGTH: 1 1/2 MILES.

* INJURIES: NONE REPORTED.

* FATALITIES: NONE REPORTED.

* DISCUSSION/DAMAGE: THE TORNADO TOUCHED DOWN TWO MILES NORTHEAST
  OF WOODWARD IN EASTERN CENTRE COUNTY, THEN CONTINUED ONE AND A
  HALF MILES BEFORE LIFTING UP TWO MILES EAST SOUTHEAST OF
  WOODWARD ON TOP OF THICK MOUNTAIN RIDGE. TWO HOMES AND ONE
  CABIN SUSTAINED MINOR DAMAGE FROM THE STORM. OVER 100 TREES WERE
  EITHER UPROOTED OR TOPPLED AND ABOUT ANOTHER 100 TREES WERE
  SIGNIFICANTLY DAMAGED.

EYEWITNESSES REPORTED HEARING A LOUD NOISE AS THE STORM PASSED BY.
ONE EYEWITNESS REPORTED HEARING THE TORNADO WARNING ISSUED BY
THE NATIONAL WEATHER SERVICE ON TELEVISION, THEN TOOK SHELTER JUST
AS THE STORM STRUCK.

&&

FOR REFERENCE...THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO
THE FOLLOWING CATEGORIES:

EF0...WIND SPEEDS 65 TO 85 MPH.
EF1...WIND SPEEDS 86 TO 110 MPH.
EF2...WIND SPEEDS 111 TO 135 MPH.
EF3...WIND SPEEDS 136 TO 165 MPH.
EF4...WIND SPEEDS 166 TO 200 MPH.
EF5...WIND SPEEDS GREATER THAN 200 MPH.

$$

NWUS51 KCTP 081928
LSRCTP

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE STATE COLLEGE PA
328 PM EDT WED AUG 08 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     TSTM WND DMG     ST. MARYS               41.43N 78.56W
08/07/2007                   ELK                PA   EMERGENCY MNGR

            TREES DOWN

1015 PM     TSTM WND DMG     3 SW RENOVO             41.30N 77.79W
08/07/2007                   CLINTON            PA   LAW ENFORCEMENT

            TREES DOWN ALONG ROUTE 120 NEAR SHINTOWN.

1020 PM     TSTM WND DMG     7 E MILLHEIM            40.89N 77.34W
08/07/2007                   CENTRE             PA   LAW ENFORCEMENT

            NUMEROUS TREES DOWN ACROSS ROUTE 45 IN THE VICINITY OF
            WOODWARD.

1020 PM     TSTM WND DMG     2 W LAURELTON CENTER    40.93N 77.24W
08/07/2007                   UNION              PA   LAW ENFORCEMENT

            TREES DOWN ALONG UNION/CENTRE COUNTY LINE.

1130 PM     FLASH FLOOD      BRADFORD                41.96N 78.64W
08/07/2007                   MCKEAN             PA   EMERGENCY MNGR

            SECTIONS OF ROUTE 219 AND ROUTE 770 CLOSED DUE TO
            FLOODING. REPORTS OF SECONDARY ROADS FLOODED IN CITY OF
            BRADFORD.

0200 AM     TSTM WND DMG     PATTON                  40.63N 78.65W
08/08/2007                   CAMBRIA            PA   EMERGENCY MNGR

            SPORADIC REPORTS OF TREES DOWN ACROSS THE NORTHERN PART
            OF THE COUNTY


&&

$$


 
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Page Last Modified: 12 August 2007 07:32:54 UTC
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