Tornadoes Along Highway 20 on Sunday, June 21, 2009

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
128 PM CDT MON JUN 22 2009

...TWELVE TORNADOES OCCURRED NEAR HIGHWAY 20 ON SUNDAY...

A FIRST REVIEW OF SPOTTER REPORTS...PHOTOS AND RADAR DATA
INDICATES THAT TWELVE SHORT-LIVED TORNADOES OCCURRED SUNDAY
AFTERNOON AND EARLY EVENING WITHIN THE NWS DES MOINES AREA OF
RESPONSIBILITY. CONTACTS WITH LAW ENFORCEMENT AND EMERGENCY
MANAGERS DISCLOSED THAT ONLY ONE STRUCTURE WAS DAMAGED...SO THE
NWS IN DES MOINES DID NOT CONDUCT A FORMAL SURVEY. OTHER
TORNADOES MAY HAVE OCCURRED IN THE NWS QUAD CITIES AREA OF
RESPONSIBILITY...AND THAT OFFICE SHOULD BE CONTACTED FOR
ADDITIONAL INFORMATION.

THE ONLY DAMAGE REPORTED WAS ONE MILE WEST OF DIKE...WHERE THE
ROOF WAS TORN OFF A HOG CONFINEMENT BUILDING. BASED UPON
PHOTOS...THIS DAMAGE WILL BE RATED EF-1. THAT TORNADO TRACKED FOR
2 MILES. ANOTHER TORNADO PRODUCED AN INTERMITTENT TRACK FROM 2
MILES SOUTH OF WELLSBURG TO 3 MILES WEST OF HOLLAND. A DEBRIS
CLOUD WAS REPORTED WITH THIS TORNADO...BUT NO STRUCTURES WERE HIT.

THE REMAINDER OF THE TORNADOES...BEGINNING NEAR KAMRAR IN HAMILTON
COUNTY JUST BEFORE 5 PM...WERE ALL VERY BRIEF AND AGAIN PRODUCED NO
STRUCTURAL DAMAGE.

&&

FOR REFERENCE...THE ENHANCED FUJITA TORNADO SCALE CLASSIFIES
TORNADOES INTO THE FOLLOWING CATEGORIES:

EF0...WIND SPEEDS 65 TO 85 MPH.
EF1...WIND SPEEDS 86 TO 110 MPH.
EF2...WIND SPEEDS 111 TO 135 MPH.
EF3...WIND SPEEDS 136 TO 165 MPH.
EF4...WIND SPEEDS 166 TO 200 MPH.
EF5...WIND SPEEDS GREATER THAN 200 MPH.
$$
The image below depicts the brief touchdowns of the tornadoes and resultant damage.
Click on the image to get a larger view and see the individual reports.
Image depicting tornado touchdowns along Highway 20 on June 21, 2009.  Click to see a larger image.
 


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