694  
NOUS43 KDVN 242048  
PNSDVN  
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009-  
015>018-024>026-034-035-MOZ009-010-252100-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE QUAD CITIES IA IL  
348 PM CDT WED MAY 24 2017  
 
...NWS DAMAGE SURVEY FOR 05/23/17 TORNADO EVENT  
 
FUNNEL CLOUDS WERE REPORTED ACROSS NORTHWESTERN ILLINOIS ON 5/23/17.  
EYEWITNESS REPORTS ALONG WITH RADAR DATA CONFIRMED ONE BRIEFLY  
TOUCHDOWN.  
   
TORNADO 1
 
 
RATING: EF-0  
ESTIMATED PEAK WIND: UNKNOWN  
PATH LENGTH /STATUTE/: UNKNOWN  
PATH WIDTH /MAXIMUM/: UNKNOWN  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: 05/23/2017  
START TIME: 255 PM CDT  
START LOCATION: 4 MILES WNW PROPHETSTOWN, IL  
START LAT/LON: 41.6885N/-90.003  
 
END DATE: 05/23/2017  
END TIME: 255 PM CDT  
END LOCATION: 4 MILES WNW PROPHETSTOWN, IL  
END LAT/LON: 41.6885N/-90.003  
 
A TORNADO WAS OBSERVED BY EYEWITNESSES ALONG WITH RADAR DEBRIS  
SIGNATURE. EYEWITNESS SAID THAT THEY HAD TO SLOW DOWN AND WAIT FOR THE  
TORNADO TO PASS IN FRONT OF THEM ON THE ROAD. THE POINT ABOVE IS THE POINT  
WHERE THIS OCCURRED. A SURVEY FOUND NO DAMAGE, HOWEVER MOST OF THE AREA  
WAS FARM FIELDS. RADAR SUGGESTS A PATH THAT IS LIKELY LONGER THAN THE  
WAS ACTUALLY ON THE GROUND.  
 
EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE  
FOLLOWING CATEGORIES BASED ON THE DAMAGE THEY CAUSE.  
 
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.  
 

 
 
GIBBS/WOLF  
 
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