PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
210 PM CDT SAT JUN 20 2009
...RESULTS FROM STORM SURVEY IN KENOSHA COUNTY...
NOTE: ALL OF THE INFORMATION CONTAINED IN THIS REPORT SHOULD BE
CONSIDERED PRELIMINARY...AND SUBJECT TO CHANGE UPON FURTHER REVIEW.
NATIONAL WEATHER SERVICE METEOROLOGISTS SURVEYED STORM DAMAGE IN
KENOSHA COUNTY THIS MORNING. IT HAS BEEN DETERMINED THAT A BRIEF
TORNADO SPUN UP ABOUT 7.0 MILES WEST-NORTHWEST OF DOWNTOWN KENOSHA.
THE EXACT BEGINNING LOCATION WAS JUST WEST OF THE INTERSECTION OF
COUNTY HIGHWAY N AND INTERSTATE 94.
THE TORNADO BEGAN AT APPROXIMATELY 542 PM...AND TRAVELED ABOUT A
MILE. THE DIRECTION IT HEADED WAS JUST SOUTH OF EAST...AND IT
DISSIPATED AT ABOUT 544 PM NEAR THE NORTHWEST RUNWAY OF THE KENOSHA
AIRPORT. THE TORNADO MAY NOT HAVE BEEN IN CONTACT WITH THE GROUND
FOR THE ENTIRE TIME.
THE TORNADO DAMAGE HAS BEEN ASSIGNED A PRELIMINARY RATING OF EF-0
ON THE ENHANCED FUJITA SCALE. AN EF-0 RATING CORRESPONDS TO
ESTIMATED WIND SPEEDS OF 65 TO 85 MPH. MAINLY TREE DAMAGE WAS
OBSERVED IN THE AREA OF THE TORNADO.
A TORNADO WARNING WAS IN EFFECT AT THE TIME OF THE TORNADO
TO THE SOUTH...A DOWNBURST OF SEVERE WINDS WRAPPED AROUND THE
SOUTHERN EDGE OF THE CIRCULATION. TREE DAMAGE WAS NOTED ALONG
HIGHWAY K TO THE WEST OF INTERSTATE 94...WITH ALL OF THE BRANCHES
AND TREES BEING BLOWN DOWN FACING GENERALLY TO THE EAST. THE
DOWNBURST WIND DAMAGE EXTENDED SOUTHEAST TOWARDS PLEASANT PRAIRIE
AND THE SOUTH SIDE OF KENOSHA.
Below are pictures taken by Debbie Zarovy at about 5:45pm, or about just after the tornado had dissipated. You can see the remnant funnel in the left hand picture, and the low-hanging wall cloud in the right hand picture. The photographs were taken about 2 miles east-southeast of the ending point of the tornado track, looking to the west.
Here is an analyzed storm-relative velocity image from the terminal doppler radar (tMKE) which is located 6 miles east of Wind Lake in far Northern Racine County, or about 9 miles southwest of Oak Creek. The time of the radar image is 5:42 PM CDT, or about when the tornado was beginning. The "rear flank downdraft" region of the storm was the area where straight-line winds caused some moderate tree damage, blowing trees and branches in an easterly direction.
Below are some additional radar images, taken from the radar here at the National Weather Service office in Sullivan, WI (KMKX). The radar images right around the time of the tornado (5:42 to 5:44 PM) were included: