416  
NOUS43 KABR 162204  
PNSABR  
SDZ007-171015-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE ABERDEEN SD  
504 PM CDT FRI AUG 16 2019  
   
..NWS DAMAGE SURVEY FOR 08/15/19 TORNADO EVENT
 
 
   
OVERVIEW
 
NWS STORM SURVEY FOUND BOTH STRAIGHT LINE WIND  
AND TORNADO DAMAGE AT/NEAR ROY LAKE IN MARSHALL COUNTY  
SOUTH DAKOTA. THE TORNADO WAS SEEN OVER ROY LAKE AND CAME  
ONSHORE ON A BAY ON THE SOUTHEAST SIDE OF THE LAKE. IT  
FLIPPED OVER A PONTOON, BROKE SEVERAL TREE BRANCHES, AND  
SPLIT A COUPLE TREES. IT THEN CAUSED MINOR DAMAGE TO A  
OUTBUILDING BEFORE PRODUCING EXTENSIVE TREE DAMAGE ON THE  
SOUTH SIDE OF A GOLF COURSE. ONE PIECE OF LAWN FURNITURE  
WAS FOUND IN A TREE OVER 150 YARDS AWAY FROM THE ORIGINAL  
LOCATION. LARGE TREE BRANCHES WERE ALSO TOSSED OVER  
60 YARDS ACROSS FAIRWAYS IN THE GOLF COURSE. IN ADDITION TO  
THE TORNADO DAMAGE, STRAIGHT LINE WINDS TIPPED OVER A CAMPER  
AND CAUSED TREE DAMAGE IN OTHER LOCATIONS IN AND AROUND THE  
GOLF COURSE.  
   
TORNADO 1
 
 
RATING: EF-0  
ESTIMATED PEAK WIND: 80 MPH  
PATH LENGTH /STATUTE/: 0.3 MILES  
PATH WIDTH /MAXIMUM/: 75 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: AUG 15, 2019  
START TIME: 5:19 PM CDT  
START LOCATION: 2 MILES SOUTH OF LAKE CITY, SD  
 
END DATE: AUG 15, 2019  
END TIME: 5:21 PM CDT  
END LOCATION: 2 MILES SOUTH OF LAKE CITY, SD  
 
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.  
 

 
 
SRF  
 
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