830  
NOUS43 KLBF 212302  
PNSLBF  
NEZ004>010-022>029-035>038-056>059-069>071-094-221115-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE NORTH PLATTE NE  
602 PM CDT THU JUN 21 2018 /502 PM MDT THU JUN 21 2018/  
   
..NWS DAMAGE SURVEY FOR 06/17/2018 TORNADO EVENT- UPDATE #1
 
 
   
UPDATE
 
AN NWS SURVEY TEAM WAS ABLE TO IDENTIFY FOUR TORNADO  
TRACKS AND THREE AREAS OF STRAIGHT LINE WIND DAMAGE. THE MOST  
SIGNIFICANT STRAIGHT LINE WIND DAMAGE WAS ABOUT 5 1/2 MILES  
SOUTHWEST OF BIG SPRINGS WHEN ESTIMATED 85 MPH WINDS BLEW THE  
ROOF OFF OF A MACHINE SHED AND REMOVED THE ROOF. SEVERAL  
WATER AND FEED TANKS WERE BLOWN AS FAR AWAY AS ONE HALF MILE.  
ONE STEEL WATERING TANK WAS BENT IN HALF ACROSS A FENCE.  
THERE WAS ALSO SOME DAMAGE IN AND AROUND BIG SPRINGS, INCLUDING  
AN UPROOTED TREE THAT DUE TO STRAIGHT LINE WINDS ESTIMATED  
TO BE AROUND 70 MPH. JUST WEST OF BIG SPRINGS, POWER POLES WERE  
LEANING AND LARGE TREE LIMBS BROKEN IN THE CEMETERY DUE TO  
ESTIMATED 85 MPH WINDS. NORTH OF TOWN, AN OLD OUTBUILDING LOST  
A PORTION OF THE ROOF AND THE CINDER BLOCK WALL COLLAPSED DUE  
TO ESTIMATED 80 MPH WINDS.  
   
OVERVIEW
 
A CYCLIC SUPERCELL MOVED ALONG A COLD FRONTAL  
BOUNDARY DURING THE AFTERNOON AND EVENING OF JUNE 17TH. THE  
STORM PRODUCED SEVERAL SHORT-LIVED TORNADOES THAT DID SPORADIC  
DAMAGE BETWEEN THE TOWN OF BIG SPRINGS AND ABOUT 15 MILES  
SOUTHWEST OF TRYON IN MCPHERSON COUNTY.  
   
TORNADO #1 DEUEL COUNTY TORNADO
 
 
RATING: EF-1  
ESTIMATED PEAK WIND: 100 MPH  
PATH LENGTH /STATUTE/: 2.14 MILES  
PATH WIDTH /MAXIMUM/: 162 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JUNE 17, 2018  
START TIME: 3:17 PM MDT  
START LOCATION: 6.3 MILES WEST OF BIG SPRINGS, NE  
 
END DATE: JUNE 17, 2018  
END TIME: 3:28 PM MDT  
END LOCATION: 4.35 MILES NORTHWEST OF BIG SPRINGS, NE  
 
SURVEY_SUMMARY: THIS TORNADO DAMAGED TWO HOMESTEADS. THE FIRST  
HOMESTEAD HAD A PIG SHED THAT LOST A PORTION OF THE ROOF. 2X6  
BEAMS WERE TOSSED 30 YARDS INTO THE SIDE OF A GARAGE, PIERCING  
THE SIDE OF THE GARAGE. THE TORNADO ALSO RIPPED OFF ASPHALT  
SHINGLES FROM A NEARBY OUTBUILDING. THE TORNADO THEN WENT ON  
TO ANOTHER FARM WHERE TWO FULL PIVOTS WERE FLIPPED, ONE BY  
THE TORNADO AND ONE BY STRAIGHT LINE WINDS. THE TORNADO ALSO  
BROKE LARGE BRANCHES OFF OF TREES.  
   
TORNADO #2 SOUTHWEST KEITH COUNTY
 
 
RATING: EF-0  
ESTIMATED PEAK WIND: 65 MPH  
PATH LENGTH /STATUTE/: 0.1 MILES  
PATH WIDTH /MAXIMUM/: 10 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JUNE 17, 2018  
START TIME: 3:50 PM MDT  
START LOCATION: 6 MILES NW BRULE, NE  
 
END DATE: JUNE 17, 2018  
END TIME: 3:50 PM MDT  
END LOCATION: 6 MILES NW BRULE, NE  
 
SURVEY_SUMMARY: BRIEF TOUCHDOWN IN AN OPEN FIELD CONFIRMED BY  
A PHOTOGRAPH.  
   
TORNADO #3 NORTHEAST KEITH COUNTY
 
 
RATING: EF-0  
ESTIMATED PEAK WIND: 65 MPH  
PATH LENGTH /STATUTE/: 0.1 MILES  
PATH WIDTH /MAXIMUM/: 10 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JUNE 17, 2018  
START TIME: 5:01 PM CDT  
START LOCATION: 15 MILES NE KEYSTONE, NE  
 
END DATE: JUNE 17, 2018  
END TIME: 5:01 PM CDT  
END LOCATION: 15 MILES NE KEYSTONE, NE  
 
SURVEY_SUMMARY: BRIEF TOUCHDOWN IN AN OPEN FIELD CONFIRMED BY  
A PHOTOGRAPH.  
   
TORNADO #4 MCPHERSON COUNTY TORNADO
 
 
RATING: EF-1  
ESTIMATED PEAK WIND: 100 MPH  
PATH LENGTH /STATUTE/: 21.4 MILES  
PATH WIDTH /MAXIMUM/: 195 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: JUNE 17, 2018  
START TIME: 5:13 PM CDT  
START LOCATION: 15 MILES SW TRYON, NE  
 
END DATE: JUNE 17, 2018  
END TIME: 5:17 PM CDT  
END LOCATION: 17 MILES SW TRYON, NE  
 
SURVEY_SUMMARY: A RENTAL HOUSE, AND TREE LINE WAS DAMAGED BY THE  
TORNADO, AND IT ALSO SENT A PIECE OF WOOD THROUGH A DEER STAND. THE  
TORNADO CONTINUED ON TO THE NORTHEAST AND HIT ANOTHER HOMESTEAD WHERE  
THE WINDOWS WERE SHATTERED, A DOOR WAS BLOWN IN AND DOOR JAMB  
DAMAGED WHILE THE RESIDENTS ATTEMPTED TO HOLD THE DOOR SHUT. THERE  
WAS ALSO FULL FLIPPED PIVOT.  
 
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 EVENTS AND PUBLICATION IN  
NWS STORM DATA.  
 

 
 
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