El Reno Damage Survey

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1220 PM CDT FRI MAY 11 2007

THE NATIONAL WEATHER SERVICE OVERSAW A DAMAGE SURVEY IN THE EL RENO
AREA TO INVESTIGATE A TORNADO THAT OCCURRED ON TUESDAY MAY 8TH. HERE
ARE THE PRELIMINARY RESULTS OF THAT SURVEY.

— TORNADO —
– ENHANCED FUJITA (EF) SCALE RATING – EF1
– BEGAN APPROX. 1143 PM
– ENDED APPROX. 1150 PM
– PATH LENGTH APPROX. 1.75 MILES

THE TORNADO BEGAN JUST SOUTH OF INTERSTATE 40 AND JUST WEST OF
HIGHWAY 81…AND ENDED JUST SOUTH OF THE INTERSECTION OF CHOCTAW
ROAD AND ELM ROAD.

A GROUPING OF INDUSTRIAL AND COMMERCIAL BUILDINGS IS LOCATED ON THE
SOUTHWEST CORNER OF I-40 AND HIGHWAY 81. ONE BUILDING SUFFERED MINOR
ROOF DAMAGE WITH THE ROOFING PEELED AWAY. ANOTHER METAL BUILDING HAD
PARTIAL PEELING OF THE SIDE PANELING…A LARGE GARAGE DOOR BLOWN IN
AND THE BUSINESS’ DUMPSTER WAS ROLLED 100 FEET TO THE WEST. AN
OUTBUILDING SUPPLY BUSINESS HAD SEVERAL GARAGE DOORS BLOWN IN AND A
DISPLAY OUTBUILDING COLLAPSED AND WAS MOVED. SOME TREES IN THE AREA
WERE DAMAGED AND THE DAMAGE VARIED OVER A WIDE RANGE. TREES CLOSER
TO THE INTERSTATE HAD LARGE BRANCHES AND TRUNKS SNAPPED…WHILE
TREES CLOSER TO HIGHWAY 81 WERE EITHER TIPPED OR HAD LIMBS UP TO SIX
INCHES IN DIAMETER SNAPPED. FARTHER TO THE WEST…A BUILDING UNDER
CONSTRUCTION HAD SOME BUILDING MATERIAL BLOWN TO THE NNE TOWARDS THE
AREA OF APPARENT TORNADO TOUCHDOWN. TWO BUSINESSES JUST SSW OF THE
TOUCHDOWN POINT ALSO HAD DAMAGE TO GARAGE DOORS.

DIRECTLY ACROSS I-40 THE TORNADO HIT A CAR DEALERSHIP. THE MAIN
BUILDING HAD MINIMAL DAMAGE AND MOST VEHICLES ON THE LOT HAD NO
DAMAGE. ONE LIGHT POLE WAS KNOCKED OVER AND A LARGE SIGN WAS
DAMAGED. A BUILDING SIMILAR TO A DOUBLE WIDE MOBILE HOME…USED AS
AN OFFICE AT THE DEALERSHIP…WAS BLOWN OVER ON ITS SIDE. SEVERAL
CARS ON THE EXTREME NW CORNER OF THE LOT WERE DAMAGED. BILLBOARDS IN
THE AREA WERE EITHER DESTROYED OR FOLDED OVER. A FARMHOUSE TO THE NW
SUSTAINED DAMAGE. THE TORNADO THEN ENTERED AN INDUSTRIAL AREA…WITH
THE MOST SUBSTANTIAL DAMAGE AT THE OG&E BUILDING. MOST OF THE ROOF
WAS REMOVED…SEVERAL TREES AND POWER POLES WERE DAMAGED. OTHER
BUILDINGS NEARBY HAD DAMAGE TO SIDING AND ROOFS.

ALONG HIGHWAY 81 NORTH OF OG&E…SEVERAL BUILDINGS IN THE INDUSTRIAL
AREA SUSTAINED DAMAGE. A CONVENIENCE STORE HAD ITS WONDOWS BLOWN
IN…A GARAGE DOOR BLOWN OUT AND A PORTION OF THE ROOF REMOVED.
THERE WAS SUBSTANTIAL DAMAGE TO BUILDINGS IN THIS AREA…INCLUDING
THE VFW BUILDING.

THE FINAL TORNADO DAMAGE POINTS WERE ALONG CHOCTAW ROAD.

DAMAGE TO THE NEIGHBORHOOD WEST OF CHOCTAW ROAD AND IN THE
NEIGHBORHOOD NORTHEAST OF HIGHWAY 81 AND ELM WAS LIKELY CAUSED BY
STRAIGHT LINE WINDS.

THE TORNADO LIKELY HAD WINDS AT THE VERY TOP OF THE EF1 CATEGORY ON
THE ENHANCED FUJITA SCALE.

SPECIAL THANKS TO KIEL ORTEGA…PATRICK MARSH AND COREY POTVIN WITH
NSSL/CIMMS FOR THEIR WORK AND EXPERTISE IN GATHERING THE DATA FOR
THIS SURVEY REPORT.

$$

SMITH

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About Putnam Reiter

Putnam has been storm chasing since 1990 and is a co-founder of Hook-Echo.com. For his day job, Putnam works in emergency management for information technology.
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