Public Information Statement
Issued by NWS Tulsa, OK

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NOUS44 KTSA 110009
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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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