Storm Survey for Clay County, Iowa Tornadoes on June 11, 2004

IN COOPERATION WITH THE CLAY COUNTY OFFICE OF EMERGENCY MANAGEMENT...THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS COMPLETED THE DAMAGE ASSESSMENT FOR CLAY COUNTY IN NORTHWEST IOWA. THE DAMAGE WAS A RESULT OF NINE TORNADOES THAT OCCURRED DURING THE AFTERNOON HOURS OF JUNE 11, 2004. THERE WERE NO INJURIES AS A RESULT OF THESE TORNADOES...BUT THERE WAS A LOSS OF LIVESTOCK.

THE STRONGEST TORNADO OCCURED WEST OF WEBB AND HAS BEEN RATED AS A F3 ON THE FUJITA SCALE. A F3 TORNADO HAS WIND SPEEDS BETWEEN 158 AND 206 MPH. THIS TORNADO WAS ON THE GROUND FOR OVER 30 MINUTES AND HAD A PATH LENGTH OF 5.8 MILES. ALONG ITS PATH...A STEEL BRIDGE WAS TORN AWAY FROM A ROAD APPROXIMATELY FOUR MILES SOUTHWEST OF WEBB.

Tornado Tracks over Clay County Iowa on June 11, 2004
(Click on image to enlarge.)

BELOW IS A COMPLETE LISTING OF THE REMAINDER OF THE TORNADOES THAT OCCURRED ACROSS CLAY COUNTY.

TWO MILES WEST OF EVERLY: A F2 TORNADO (113-157 MPH) RESULTING IN A LITTLE OVER FIVE MILE DAMAGE PATH.
ONE MILE SOUTH OF EVERLY: A F1 TORNADO (73-112 MPH) RESULTING IN A TWO MILE DAMAGE PATH.
TWO MILES SOUTH OF FOSTORIA: A F1 TORNADO (73-112 MPH) RESULTING IN A 1.5 MILE DAMAGE PATH.
TWO MILES NORTHEAST OF WEBB: A F1 TORNADO (73-112 MPH) RESULTING IN A 1.8 MILE DAMAGE PATH.
FIVE MILES SOUTHEAST OF DICKENS: A F1 TORNADO (73-112 MPH) RESULTING IN AN ONE MILE DAMAGE PATH.
THREE MILES EAST OF DICKENS: THREE VERY BRIEF F0 TORNADOES (40-72 MPH).

A DETAILED TORNADO TRACK MAP IS AVAILABLE ON OUR HOMEPAGE. THE ADDRESS FOR OUR HOMEPAGE IS WWW.CRH.NOAA.GOV/FSD (USE LOWER CASE).

TODD HEITKAMP
WARNING COORDINATION METEOROLOGIST

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