Fort Smith, Arkansas

... NWS damage survey for 05/20/2013 tornado event - update 1...

.Update... Multiple tornadoes added based on yesterday's surveys
and modifications were made to the Talala tornado.

.Avant tornado...

Rating: EF-1
estimated peak wind: 100-110 mph
path length /statute/: 6.5 miles
path width /maximum/: 500 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 351 PM CDT
start location: 5 SSW Avant / Osage County / OK

End date: may 20 2013
end time: 405 PM CDT
end location: 5.2 WNW Vera / Washington County / OK

Survey summary: numerous trees were snapped or uprooted. A home
was damaged by a large limb that fell onto its roof. This tornado
path is likely multiple tornadoes. Chaser video will be used to
determine how many segments may have occurred.

.Ramona tornado...

Rating: EF-1
estimated peak wind: 95-105 mph
path length /statute/: 4.5 miles
path width /maximum/: 400 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 421 PM CDT
start location: 3 se Ramona / Washington County / OK

End date: may 20 2013
end time: 430 PM CDT
end location: 5.2 E Ramona / Washington County / OK

Survey summary: this tornado damaged a couple homes and snapped or
uprooted several trees.

.Talala tornado...

Rating: EF-1
estimated peak wind: 95 to 105 mph
path length /statute/: 6 miles
path width /maximum/: 500 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 433 PM CDT
start location: 5.8 ENE Ramona / Washington County / OK

End date: may 20 2013
end time: 447 PM CDT
end location: 3.4 NNW Talala / Rogers County / OK

Survey summary: this tornado remained over open country for most
of its lifecycle. The rating is based on the single home that it
is known to have damaged and the nearby barn. The path length is
therefore an estimate based on radar data and the width will be an
estimate mainly based on chaser video.

.Wyandotte tornado 1...

Rating: EF-2
estimated peak wind: 115-125 mph
path length /statute/: 10 miles
path width /maximum/: 800 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 625 PM CDT
start location: 4 N Fairland / Ottawa County / OK
start lat/lon: 36.8129 / -94.8461

End date: may 20 2013
end time: 640 PM CDT
end location: 4 NE Wyandotte / Ottawa County / OK
end lat/lon: 36.8298 / -94.6706

Survey summary: this tornado snapped or uprooted numerous trees
and damaged numerous homes. The most significant damage was
located near the area where the tornado crossed Highway 137 where
a metal building was severely damaged and several homes were
damaged. Many Hardwood trees were also snapped in that area.

.Wyandotte tornado 2...

Rating: EF-1
estimated peak wind: 100-110 mph
path length /statute/: 9.5 miles
path width /maximum/: 600 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 632 PM CDT
start location: 2.8 NW Wyandotte / Ottawa County / OK
start lat/lon: 36.8128 / -94.7701

End date: may 20 2013
end time: 642 PM CDT
end location: 0.5 se Seneca / Newton County / MO
end lat/lon: 36.8359 / -94.6062

Survey summary: this tornado damaged several houses... damaged
barns or outbuildings... and snapped or uprooted a number of trees.
It dissipated over the south side of Seneca Missouri after
snapping or uprooting several trees as it crossed the state line
and crossed Highway 43. Several eyewitnesses north of Wyandotte saw
two tornadoes approaching from the west and radar data as well as
damage patterns support that conclusion. In addition... there was
lots of evidence of straight-line wind damage south of the
tornado paths as the Bow echo storm surged east as it approached
the state line.

.Proctor tornado...

Rating: EF-1
estimated peak wind: 95 to 105 mph
path length /statute/: 2 miles
path width /maximum/: 150 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 632 PM CDT
start location: 1.7 se Proctor / Adair County / OK

End date: may 20 2013
end time: 634 PM CDT
end location: 2.8 E Proctor / Adair County / OK

Survey summary: this tornado uprooted trees and snapped a few
trees.

.Christie tornado...

Rating: EF-1
estimated peak wind: 100 to 110 mph
path length /statute/: 2.5 miles
path width /maximum/: 300 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 635 PM CDT
start location: 2.5 SW Christie / Adair County / OK

End date: may 20 2013
end time: 637 PM CDT
end location: 1 NW Christie / Adair County / OK

Survey summary: this tornado snapped or uprooted trees and damaged
a barn.

.Westville tornado...

Rating: EF-1
estimated peak wind: 100 to 110 mph
path length /statute/: 8 miles
path width /maximum/: 500 yards
fatalities: 0
injuries: 0

Start date: may 20 2013
start time: 640 PM CDT
start location: 2.7 WSW Christie / Adair County / OK

End date: may 20 2013
end time: 647 PM CDT
end location: 1.6 N Cincinnati / Washington County / AR

Survey summary: this tornado destroyed two barns... damaged
another... and snapped or uprooted numerous trees.

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.