Public Information Statement
Issued by NWS Tulsa, OK

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NOUS44 KTSA 062058
PNSTSA
OKZ060-070900-

Public Information Statement
National Weather Service Tulsa OK
358 PM CDT Thu May 6 2021

...NWS DAMAGE SURVEY FOR 5/3/2021 TORNADO EVENT...UPDATE 1

.UPDATE...Updated to finalize the Fort Smith/Van Buren data, and to
add the Dyer Arkansas tornado.

.OVERVIEW...Three tornadoes developed along the leading edge of a
bow echo Monday evening, as it moved through the Arkansas River
Valley in east central Oklahoma and west central Arkansas. The storm
damage was surveyed Tuesday and Wednesday, and the results follow.

.ROLAND OKLAHOMA TORNADO...

Rating:                 EF-1
Estimated Peak Wind:    100 to 110 mph
Path Length /Statute/:  10.3 miles
Path Width /Maximum/:   900 yards
Fatalities:             0
Injuries:               0

Start Date:             May 3 2021
Start Time:             936 pm CDT
Start Location:         1 E Muldrow / Sequoyah County / OK
Start Lat/Lon:          35.409 / -94.578

End Date:               May 3 2021
End Time:               947 pm CDT
End Location:           3.5 W Rena / Crawford County / AR
End Lat/Lon:            35.476 / -94.417

Survey Summary: This tornado developed on the east side of Muldrow,
uprooting trees and snapping large tree limbs. It moved east-
northeast passing just north of Roland where trees were snapped,
power poles were snapped, outbuildings were destroyed, and several
homes were damaged. The tornado moved northeast uprooting trees,
snapping power poles, and damaging outbuildings before crossing into
Arkansas north of I-40, and dissipating east of Ranch Road to the
west of Rena. There was a lot of other mainly tree damage noted,
especially beyond the end point noted above, but the damage became
more broad and less convergent, suggesting straight-line wind
associated with the bow echo dominated from that point eastward.

.FORT SMITH/VAN BUREN ARKANSAS TORNADO...

Rating:                 EF-1
Estimated Peak Wind:    100 to 110 mph
Path Length /Statute/:  28.8 miles
Path Width /Maximum/:   2200 yards / 1.25 miles
Fatalities:             0
Injuries:               1

Start Date:             May 3 2021
Start Time:             933 pm CDT
Start Location:         4.2 SE Muldrow / Sequoyah County / OK
Start Lat/Lon:          35.363 / -94.547

End Date:               May 3 2021
End Time:               1005 pm CDT
End Location:           4.5 SE Mountainburg / Crawford County / AR
End Lat/Lon:            35.583 / -94.119

Survey Summary: This tornado developed southeast of Muldrow, where
trees were uprooted. It moved northeast uprooting trees, and
toppling multiple center-pivot irrigation systems, and snapping power
poles to near Moffett. The tornado then crossed the Arkansas River
and moved across the northern portion of the City of Fort Smith where
many homes and businesses were damaged, and numerous power poles and
trees were blown down. It then crossed the Arkansas River again
moving through the City of Van Buren where the courthouse had much of
the roof removed, many homes and businesses were damaged, and
numerous trees and power poles were snapped. This very wide tornado
then moved northeast across portions of Rudy and Alma, and then
dissipated southeast of Mountainsburg. Many trees were snapped and
uprooted, outbuildings were destroyed, homes and businesses were
damaged, and numerous power poles were snapped.

There was a significant amount of straight-line wind damage that also
occurred across northern Sebastian County and southern Crawford
County outside of the tornado path. Much of this was to the south of
the tornado, and extended for up to a few miles away from the tornado
path. In places, this damage likely occurred in areas that had
already experienced tornado damage, as the wind surge associated with
the bowing line segment pushed through behind the tornado. The
straight-line wind damage was suggestive of up to 80 to 100 mph wind
gusts locally, with numerous trees blown down, outbuildings damaged
or destroyed, and homes damaged. The damage was comparable to that of
a weak tornado.

.DYER ARKANSAS TORNADO...

Rating:                 EF-1
Estimated Peak Wind:    90 to 100 mph
Path Length /Statute/:  2.7 miles
Path Width /Maximum/:   300 yards
Fatalities:             0
Injuries:               0

Start Date:             May 3 2021
Start Time:             1006 pm CDT
Start Location:         4 NNW Dyer / Crawford County / AR
Start Lat/Lon:          35.555 / -94.153

End Date:               May 3 2021
End Time:               1010 pm CDT
End Location:           5.6 NNE Dyer / Crawford County / AR
End Lat/Lon:            35.575 / -94.112

Survey Summary: This tornado uprooted numerous trees, and blew down
power poles.

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


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