National Weather Service Raw Text Product

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NOUS44 KTSA 230324
PNSTSA
OKZ060-231530-

Public Information Statement
National Weather Service Tulsa OK
1024 PM CDT Tue Oct 22 2019

...NWS DAMAGE SURVEY FOR 10/21/19 TORNADO AND THUNDERSTORM WIND
EVENT...

.OVERVIEW...At least two tornadoes developed on the leading edge of a
line of thunderstorms that moved through eastern Oklahoma and
northwestern Arkansas during the late evening hours of Sunday,
October 20th, and the early morning hours of Monday, October 21st. 
NWS Tulsa meteorologists surveyed storm damage in northern Adair 
County and across much of Benton County over the past two days.
Details concerning the two tornadoes that have thus far been
confirmed by NWS Tulsa from this event, as well as an area of
damaging straight line wind, are noted in the summaries below.

Additional damage surveys for Wagoner, Adair, and Washington County
(Arkansas) will be conducted on Wednesday.

Siloam Springs Arkansas Tornado #1...

Rating:                 EF-1
Estimated Peak Wind:    90 to 100 mph
Path Length /Statute/:  9.1 miles
Path Width /Maximum/:   900 yards
Fatalities:             0
Injuries:               0

Start Date:             October 21 2019 
Start Time:             1201 am CDT
Start Location:         5.7 NW Watts / Adair County / OK
Start Lat/Lon:          36.1410 / -94.6644

End Date:               October 21 2019
End Time:               1209 am CDT
End Location:           2.5 SE Siloam Springs / Benton County / AR
End Lat/Lon:            36.1666 / -94.5045

Survey Summary: A tornado developed over northeastern Adair County,
Oklahoma,  and moved east across the southern portion of the City of
Siloam Springs, Arkansas. This tornado uprooted numerous trees,
damaged homes, destroyed outbuildings, and snapped power poles.

.Siloam Springs Arkansas Tornado #2...

Rating:                 EF-1
Estimated Peak Wind:    100 to 110 mph
Path Length /Statute/:  31.4 miles
Path Width /Maximum/:   1.5 miles
Fatalities:             0
Injuries:               0

Start Date:             October 21 2019 
Start Time:             1208 am CDT
Start Location:         0.8 SE Siloam Springs / Benton County / AR
Start Lat/Lon:          36.1778 / -94.5310

End Date:               October 21 2019
End Time:               1238 am CDT
End Location:           3.7 SE Avoca / Benton County / AR
End Lat/Lon:            36.3643 / -94.0224

Survey Summary: A second tornado appears to have formed on the north
side of Siloam Springs, as the first tornado was in the process of
dissipating on the south side of town. This tornado moved along 
Highway 412 in Siloam Springs, and then across the southern portion 
of the Siloam Springs Airport, as well as a housing subdivision east 
of the airport. The roof was blown off a business, many homes and 
businesses sustained roof damage, several hangars at the airport were
damaged, numerous trees were uprooted, and power poles were snapped.
The tornado became very large and moved east-northeast from the east
side of Siloam Springs, across Highfill and Cave Springs, and into 
Rogers. Numerous homes were damaged, outbuildings were destroyed, 
many power poles were blown down, and numerous trees were uprooted. A
metal building structure that was open-aired on the south side of 
the building sustained severe damage. Businesses in the Pinnacle 
Hills area of Rogers were damaged. From Rogers the tornado moved 
northeast, crossing inlets of Beaver Lake before dissipating. 

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

.Benton County Arkansas Thunderstorm Wind...

Peak Wind /E/ or /M/:   80 to 90 mph
Path Length /Statute/:  unknown
Path Width /Maximum/:   unknown
Fatalities:             1
Injuries:               0

Start Date:             October 21 2019 
Start Time:             1205 am CDT
Start Location:         Siloam Springs / Benton County / AR

End Date:               October 21 2019
End Time:               1240 am CDT
End Location:           Beaver Lake / Benton County / AR

Survey Summary: In addition to the two large tornado tracks that
occurred across northeastern Adair and Benton Counties, damaging 
straight-line wind was extensive generally to the south of the
tornado tracks. The damage was similar to the damage that occurred in
the nearby tornadoes, and was consistent with wind gusts of 80 to 90
mph:trees were uprooted, homes were damaged, power poles were blown 
down, and outbuildings were destroyed. Straight-line wind uprooted a 
tree onto a home near Beaver Lake, and killed the occupant.

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/TS/SRC