103  
NOUS44 KTSA 110009  
PNSTSA  
ARZ001-002-010-011-019-020-029-OKZ049-053>076-111215-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE TULSA OK  
709 PM CDT THU AUG 10 2017  
   
..NWS DAMAGE SURVEY FOR 8/6/17 TORNADO EVENT
 
 
   
..UPDATED TO ADD TORNADO NEAR CHELSEA
 
 
   
OVERVIEW
 
NWS TULSA METEOROLOGISTS SURVEYED SEVERAL TORNADOES THAT  
DEVELOPED EARLY SUNDAY MORNING AS A BOW ECHO MOVED THROUGH  
NORTHEASTERN OKLAHOMA. THE FINDINGS ARE SUMMARIZED BELOW.  
   
TULSA OKLAHOMA TORNADO
 
 
RATING: EF-2  
ESTIMATED PEAK WIND: 120 TO 130 MPH  
PATH LENGTH /STATUTE/: 6.9 MILES  
PATH WIDTH /MAXIMUM/: 550 YARDS  
FATALITIES: 0  
INJURIES: 26  
 
START DATE: AUGUST 6 2017  
START TIME: 119 AM CDT  
START LOCATION: 4.2 SE TULSA / TULSA COUNTY / OK  
START LAT/LON: 36.1097 / -95.9367  
 
END DATE: AUGUST 6 2017  
END TIME: 125 AM CDT  
END LOCATION: 3.1 N BROKEN ARROW / TULSA COUNTY / OK  
END LAT/LON: 36.0907 / -95.8167  
 
SURVEY SUMMARY: THIS TORNADO DEVELOPED ALONG THE LEADING EDGE OF THE  
BOW ECHO, OVER A NEIGHBORHOOD EAST OF S HARVARD AVE AND SOUTH OF E  
36TH ST S, WHERE LARGE TREE LIMBS WERE SNAPPED AND HOMES WERE  
DAMAGED. THE TORNADO MOVED EAST-SOUTHEAST CROSSING S YALE AVE WHERE  
NUMEROUS TREES AND POWER POLES WERE SNAPPED. NUMEROUS BUSINESSES WERE  
DAMAGED OR DESTROYED BETWEEN S YALE AVE AND S SHERIDAN ROAD ALONG AND  
WITHIN A FEW BLOCKS OF E 41ST ST S. SOME OF THE WORST DAMAGE IN THE  
PATH WAS IN THIS AREA. SOME OF THE BUSINESSES IN THE AREA HAD THE  
ROOFS BLOWN OFF THE STRUCTURE AND SOME HAD EXTERIOR WALLS BLOWN DOWN.  
SEVERAL VEHICLES WERE ROLLED IN THIS AREA, AND REPORTEDLY ABOUT 26  
INJURIES OCCURRED HERE. NUMEROUS OTHER BUSINESSES SUSTAINED MAINLY  
ROOF, WALL, AND WINDOW DAMAGE BETWEEN S SHERIDAN ROAD AND HIGHWAY  
169. MANY POWER POLES AND TREES WERE ALSO BLOWN DOWN IN THIS AREA.  
THE TORNADO TURNED MORE EASTERLY NEAR HIGHWAY 169 AND MOVED ROUGHLY  
ALONG E 51ST ST S, DISSIPATING JUST BEFORE REACHING N ASPEN AVE (S  
145TH EAST AVE).  
 
THE SURVEY TEAM FOUND ADDITIONAL TREE DAMAGE EAST OF N ASPEN AVE  
NEAR BATTLE CREEK GOLF COURSE, BUT THIS DAMAGE WAS MUCH MORE BROAD  
AND LACKED THE PATTERN OF DEBRIS THAT WAS TYPICAL OF THE TORNADO  
FURTHER WEST.  
   
BROKEN ARROW OKLAHOMA TORNADO
 
 
RATING: EF-1  
ESTIMATED PEAK WIND: 90 TO 100 MPH  
PATH LENGTH /STATUTE/: 2.9 MILES  
PATH WIDTH /MAXIMUM/: 400 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: AUGUST 6 2017  
START TIME: 127 AM CDT  
START LOCATION: 2.8 N BROKEN ARROW / TULSA COUNTY / OK  
START LAT/LON: 36.0919 / -95.7936  
 
END DATE: AUGUST 6 2017  
END TIME: 131 AM CDT  
END LOCATION: 3.2 NE BROKEN ARROW / WAGONER COUNTY / OK  
END LAT/LON: 36.0786 / -95.7452  
 
SURVEY SUMMARY: THIS TORNADO DEVELOPED OVER A NEIGHBORHOOD ALONG AND  
NORTH OF E 51ST ST S AND WEST OF S 177TH EAST AVE WHERE NUMEROUS  
HOMES RECEIVED DAMAGE TO THEIR ROOFS AND TREES WERE DAMAGED. THE  
TORNADO MOVED EAST-SOUTHEAST UPROOTING TREES AND SNAPPING LARGE TREE  
LIMBS BETWEEN LYNN LANE AND COUNTY LINE ROAD. THE ROOF OF AN  
OUTBUILDING WAS BLOWN OFF ON COUNTY LINE ROAD.  
   
OOLOGAH OKLAHOMA TORNADO
 
 
RATING: EF-1  
ESTIMATED PEAK WIND: 90 TO 100 MPH  
PATH LENGTH /STATUTE/: 4.5 MILES  
PATH WIDTH /MAXIMUM/: 200 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: AUGUST 6 2017  
START TIME: 132 AM CDT  
START LOCATION: 1 E OOLOGAH / ROGERS COUNTY / OK  
START LAT/LON: 36.4443 / -95.6908  
 
END DATE: AUGUST 6 2017  
END TIME: 140 AM CDT  
END LOCATION: 1.5 SSE TALALA / ROGERS COUNTY / OK  
END LAT/LON: 36.5075 / -95.6958  
 
SURVEY SUMMARY: THIS TORNADO DEVELOPED EAST OF OOLOGAH WHERE BARNS AND  
TREES WERE DAMAGED. THE TORNADO MOVED NORTHWARD ALONG THE S 4110 ROAD  
WHERE POWER POLES WERE SNAPPED, A HOME WAS DAMAGED, AND TREES WERE  
BLOWN DOWN. THE TORNADO TURNED MORE NORTHWESTERLY AFTER CROSSING THE  
E 370 ROAD AND DISSIPATED SOUTH OF THE E 350 ROAD.  
 
   
CHELSEA OKLAHOMA TORNADO
 
 
RATING: EF-1  
ESTIMATED PEAK WIND: 90 TO 95 MPH  
PATH LENGTH /STATUTE/: 0.9 MILES  
PATH WIDTH /MAXIMUM/: 405 YARDS  
FATALITIES: 0  
INJURIES: 0  
 
START DATE: AUGUST 6 2017  
START TIME: 211 AM CDT  
START LOCATION: 6 S CHELSEA / ROGERS COUNTY / OK  
START LAT/LON: 36.4496 / -95.4409  
 
END DATE: AUGUST 6 2017  
END TIME: 213 AM CDT  
END LOCATION: 5 S CHELSEA / MAYES COUNTY / OK  
END LAT/LON: 36.4607 / -95.4333  
 
SURVEY SUMMARY: A TORNADO DEVELOPED JUST WEST OF HIGHWAY 28 ALONG AND JUST  
SOUTH OF 390 ROAD TO THE SOUTH OF CHELSEA, OKLAHOMA. THE TORNADO BRIEFLY  
REACHED EF-1 INTENSITY JUST AFTER IT FORMED, BUT PRIMARILY PRODUCED EF-0 WINDS  
OF 65 TO 80 MPH ALONG ITS SHORT PATH. MINOR ROOF DAMAGE WAS NOTED TO AN  
AGRICULTURAL BUILDING. THE TORNADO QUICKLY DISSIPATED AFTER CROSSING  
HIGHWAY 28 AND ENTERING MAYES COUNTY.  
 
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.  
 

 
 
EJC/SFP/KAH  
 
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