Severe Weather and Tornado of August 7th, 2007

Overview

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 - Areal Photo courtesy CentreMap.org, mapping of damage by Mike Connelly	00z PIT balloon sounding with good low level shear and stronger winds aloft	IR Sat Pic with lightning overlaid

Tornadoes:

Tornado - WOODWARD
EASTERN CENTRE COUNTY

Date	August 7, 2007
Time (Local)	10:25 PM - 10:30 PM
EF Rating	EF1
Est. Peak Winds	85-95 MPH
Path Length	1 1/2 MILES
Max Width	UP TO 400 YARDS
Injuries/Deaths	0/0
Summary: 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.

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Photos & Video

Header

Radar


Radar Reflectivity with pronounced hook echo(es)	Storm Relative Motion with VRshear calculation overlaid

Storm Reports

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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