828  
NOUS43 KABR 061241 AAA  
PNSABR  
SDZ005-070045-  
 
PUBLIC INFORMATION STATEMENT...UPDATED  
NATIONAL WEATHER SERVICE ABERDEEN SD  
741 AM CDT MON JUL 6 2020  
   
..NWS DAMAGE SURVEY FOR 07/04/2020 TORNADO EVENT - UPDATE #2
 
 
   
TORNADO 3 MILES NNW WETONKA, SD
 
 
RATING: EF-2  
ESTIMATED PEAK WIND: 115 MPH  
PATH LENGTH /STATUTE/: 2.65 MILES  
PATH WIDTH /MAXIMUM/: 150 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JULY 04 2020  
START TIME: 7:35 PM CDT  
START LOCATION: 3 MILES NNW WETONKA, SD  
START LAT/LON: 45.6688 / -98.7980  
 
END DATE: JULY 04 2020  
END TIME: 7:39 PM CDT  
END LOCATION: 1 MILES NNE WETONKA, SD  
END LAT/LON: 45.6423 / -98.7581  
 
A TORNADO TOUCHED DOWN 3 MILES NNW OF WETONKA, SD. THE GRASSLAND  
HUTTERITE COLONY SUSTAINED THE MOST DAMAGE. A LARGE MACHINE SHOP  
LOST A ROOF AND WALL. A LARGE, EMPTY, ANCHORED GRAIN BIN WAS  
COMPLETELY REMOVED FROM ITS BASE AND THE ADJACENT FEED MILL WAS  
SIGNIFICANTLY DAMAGED. A 400 FT X 80 FT TURKEY BARN WAS COMPLETELY  
DESTROYED ALONG WITH A SMALLER OUTBUILDING. DEBRIS FROM THESE TWO  
BUILDINGS WAS SCATTERED IN MANY DIRECTIONS. A TRAILER WAS  
FLIPPED, FREIGHT STORAGE UNIT ROTATED AND TWO OTHER OUTBUILDINGS  
HAD COMPLETE LOSS OF ROOF PANELS. ROOF AND SIDING DAMAGE OCCURRED  
TO MANY OF THE RESIDENTIAL BUILDINGS. TREE AND CROP DAMAGE WERE  
ALSO NOTED. THE TORNADO TRACKED OVER 2 MILES SOUTHEAST, CROSSING  
MCPHERSON COUNTY HWY 23 AND ENDING ABOUT ONE MILE NNE OF WETONKA,  
SD. DEBRIS FROM GRASSLAND COLONY WAS DISPERSED ALONG THE ENTIRE  
TRACK OF THE TORNADO.  
 
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  
   
THUNDERSTORM WIND 1 MILE W WETONKA, SD
 
 
PEAK WIND ESTIMATED: 97 MPH  
PATH LENGTH /STATUTE/: 0.1 MILES  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JULY 04 2020  
START TIME: 7:25 PM CDT  
START LOCATION: 1 MILE W WETONKA, SD  
 
END DATE: JULY 04 2020  
END TIME: 7:45 PM CDT  
END LOCATION: 1 MILE W WETONKA, SD  
 
RESIDENTS WERE NOT HOME AT THE TIME OF THE STORM, BUT IT IS LIKELY  
MULTIPLE ROUNDS OF STRONG WINDS OCCURRED. THE STRONGEST FROM THE  
NORTHWEST, BUT ALSO VERY STRONG SOUTHERLY WINDS FROM THE STORM  
INFLOW. THE MOST SIGNIFICANT DAMAGE WAS DONE TO A MACHINE SHOP  
WHICH LOST A MAJORITY OF THE ROOF AND WALLS. FARM MACHINERY WAS  
DAMAGED INCLUDING A SEED DRILL WHICH WAS ROTATED AND A FEED WAGON  
WHICH WAS ROLLED ON ITS SIDE. AN OLD BARN WAS ALSO TOPPLED. THIS  
DAMAGE PRIMARILY SPREAD FROM NORTHWEST TO SOUTHEAST. FINALLY, A  
SMALL OUTBUILDING WAS TOSSED BACK TO THE NORTH, LIKELY FROM STRONG  
SOUTHERLY STORM INFLOW WINDS.  
   
THUNDERSTORM WIND 2.5 MILES WSW WETONKA, SD
 
 
PEAK WIND ESTIMATED: 97 MPH  
PATH LENGTH /STATUTE/: 0.5 MILES  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JULY 04 2020  
START TIME: 7:35 PM CDT  
START LOCATION: 2.5 MILES WSW WETONKA, SD  
 
END DATE: JULY 04 2020  
END TIME: 7:50 PM CDT  
END LOCATION: 2.5 MILES WSW WETONKA, SD  
 
SIGNIFICANT DAMAGE OCCURRED TO THE LONG LAKE HUTTERITE COLONY.  
EYE WITNESSES SAID TWO ROUNDS OF WINDS CAUSED DAMAGE TO THE  
PROPERTY. SOUTHERLY STORM INFLOW WINDS RIPPED MULTIPLE ROOF  
PANELS OFF FOUR SEPARATE TURKEY BARNS. DEBRIS WAS SPREAD TO THE  
WEST NORTH WEST. ADDITIONAL DAMAGE WAS DONE TO A FEED MILL AND A  
MACHINE SHED WAS COMPLETELY DESTROYED. DEBRIS FROM THESE BUILDINGS  
WAS TOSSED FROM NORTH NORTHWEST TO SOUTH SOUTHEAST. OTHER GRAIN  
BIN DAMAGE ALSO OCCURRED.  
 
NOTE:  
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO  
CHANGE PENDING FINAL REVIEW OF THE EVENTS AND PUBLICATION IN NWS  
STORM DATA.  
 

 
 
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