Public Information Statement
Issued by NWS Grand Forks, ND

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NOUS43 KFGF 060310
PNSFGF
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-061515-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GRAND FORKS ND
1003 PM CDT FRI SEP 5 2014

...NWS DAMAGE SURVEY FOR 9/4/14 TORNADO EVENT IN OTTERTAIL COUNTY
MN...

THE NATIONAL WEATHER SERVICE CONDUCTED A STORM DAMAGE SURVEY BASED
ON A TORNADO WARNING ISSUED FOR OTTER TAIL COUNTY ON THE MORNING OF
4 SEPTEMBER 2014. THE AREA WAS INSPECTED STARTING APPROXIMATELY 2
MILES NORTH OF ROTHSAY NEAR THE INTERSECTION OF OTTER TAIL COUNTY
ROADS 21 AND 28...THEN PROCEEDED EAST TOWARD THE ERHARD
AREA.

RATING:                 EF-2
ESTIMATED PEAK WIND:    120 MPH
PATH LENGTH /STATUTE/:  2 MILES
PATH WIDTH /MAXIMUM/:   200 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             SEPTEMBER 4 2014
START TIME:             AROUND 446 AM CDT
START LOCATION:         APPROX. 2 MILES N OF ROTHSAY
START LAT/LON:          46.30N/-96.16W (EST.)

END DATE:               SEPTEMBER 4 2014
END TIME:               BY 530 AM CDT
END LOCATION:           APPROX. 4 MILES NE OF ROTHSAY
END LAT/LON:47.30N/-96.14W (EST.)

DAMAGE WAS FOUND ALONG A LINE APPROXIMATELY TWO MILES LONG BEGINNING
AT THE INTERSECTION OF OTTER TAIL COUNTY ROADS 21 AND 28. CORN
PLANTS WERE LAID DOWN IN THE FIELD OVER AN AREA APPROXIMATELY 100
YARDS BY 100 YARDS ABOUT 200 YARDS EAST SOUTHEAST OF THE
INTERSECTION.

A FARMSTEAD ON 110TH AVENUE...JUST SOUTH OF COUNTY ROAD
28...EXPERIENCED EXTENSIVE TREE AND HOUSE DAMAGE. THE TREES ON THE
NORTH END OF THE FARMSTEAD HAD THE GREATEST DAMAGE. ONE HARDWOOD
TREE THREE FEET IN DIAMETER WAS SNAPPED SEVEN FEET ABOVE THE
GROUND. ONE TREE 18 INCHES IN DIAMETER WAS UPROOTED. A FEW OTHER
TREES WERE SNAPPED OFF 10 FEET OFF THE GROUND...WITH ONE TREE
SNAPPED 20 FEET ABOVE THE GROUND. SEVERAL OTHER TREES HAD BRANCHES
SNAPPED OFF...AND DEBRIS WAS SPREAD OUT OVER A WHEAT FIELD TO THE
EAST AND SOUTHEAST OF THE FARMSTEAD TO A DISTANCE OF 75 YARDS. THE
WEST SIDE OF THE HOUSE EXPERIENCED DAMAGE TO THE SIDING...WITH
SEVERAL PANELS RIPPED OFF...ALONG WITH THE INSULATION SHEATHS.
APPROXIMATELY 30 PERCENT OF ROOFING SHINGLES WERE RIPPED OFF...AND
TREE BRANCHES WERE FOUND INSIDE THE HOUSE. WINDOW GLASS WAS ALSO
BROKEN ON THE WEST SIDE OF THE HOUSE.

A THIRD SPOT WHERE DAMAGE WAS LOCATED WAS NEAR A FARMSTEAD ON 120TH
AVENUE JUST SOUTH OF COUNTY ROAD 28. SOME SMALLER BRANCHES WERE
DROPPED ONTO THE ROAD ON THE EAST SIDE OF THE FARMSTEAD...BUT NO
OTHER DAMAGE WAS VISIBLE ON THE PROPERTY.

IT WAS DETERMINED THE PATH WAS APPROXIMATELY TWO MILES LONG...WITH
THE TORNADO TOUCHING DOWN AT THE THREE POINTS NOTED ABOVE. NO OTHER
DAMAGE WAS OBSERVED IN BETWEEN THE POINTS.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES
TORNADOES INTO THE FOLLOWING CATEGORIES.

EF0...WEAK......65 TO 85 MPH
EF1...WEAK......86 TO 110 MPH
EF2...STRONG....111 TO 135 MPH
EF3...STRONG....136 TO 165 MPH
EF4...VIOLENT...166 TO 200 MPH
EF5...VIOLENT...>200 MPH*

NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN
NWS STORM DATA.

$$

HOPKINS







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