864  
NOUS43 KARX 162156  
PNSARX  
IAZ030-171000-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE LA CROSSE WI  
456 PM CDT MON SEP 16 2019  
   
..NWS DAMAGE SURVEY FOR 9/12/19 TORNADO EVENT - UPDATE 2
 
   
..RURAL CLAYTON COUNTY IOWA TORNADO
 
 
   
OVERVIEW
 
ADDITIONAL DAMAGE SURVEY CONDUCTED IN RURAL  
CLAYTON COUNTY IOWA TODAY FROM THURSDAY STORMS.  
   
GUNDER/MONONA TORNADO
 
 
RATING: EF-0  
ESTIMATED PEAK WIND: 85 MPH  
PATH LENGTH /STATUTE/: 4.3 MILES  
PATH WIDTH /MAXIMUM/: 40 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: SEP 12 2019  
START TIME: 534 PM CDT  
START LOCATION: 5 W FARMERSBURG  
START LAT/LON: 42.9688 / -91.4648  
 
END DATE: SEP 12 2019  
END TIME: 541 PM CDT  
END LOCATION: 2 SW MONONA  
END_LAT/LON: 43.0183 / -91.4159  
 
SURVEY SUMMARY: DAMAGE MAINLY TO CROPS AND TREES. NARROW  
PATH TRACKED THROUGH CORN FIELDS. SOME OUTBUILDINGS DAMAGED  
AND ONE HOUSE HAD BRANCHES IMPALED THROUGH SIDE WALLS.  
METAL FENCING POSTS BENT JUST BEFORE TORNADO DISSIPATED.  
 
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.  
 

 
 
SHEA/BATZEK  
 
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