Public Information Statement
Issued by NWS Tulsa, OK

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NOUS44 KTSA 150036

Public Information Statement
National Weather Service Tulsa OK
636 PM CST Tue Jan 14 2020


.UPDATE...Updated to include the Park Hill Tornado

.OVERVIEW...Severe thunderstorms developed into eastern Oklahoma
during the morning of Friday, January 10th, ahead of a strong storm
system that moved into the Southern Plains from the Southern Rockies.
Unseasonably warm and moist air ahead of this system resulted in weak
instability to develop across eastern Oklahoma and northwestern
Arkansas. Strong wind fields and very strong wind shear, both deep-
layer and low-level, combined with this instability, resulted in
some of the storms through mid afternoon to become supercells. These
storms produced hail up to golfball size, damaging wind, and a
tornado. The tornado damage in Cherokee County, Oklahoma, was
surveyed by our office today. By late afternoon, the storms had
evolved into a squall line that moved across far eastern Oklahoma and
western Arkansas through the evening. As this squall line moved
through northwestern Arkansas, it produced damaging wind and a
tornado. The damage from this tornado was surveyed by our office,
along with Franklin County Emergency Management, on Saturday. The
details of both damage surveys follow.

.Park Hill Oklahoma Tornado...

Rating:                 EF-1
Estimated Peak Wind:    90 to 100 mph
Path Length /Statute/:  5.8 miles
Path Width /Maximum/:   250 yards
Fatalities:             0
Injuries:               0

Start Date:             January 10 2020
Start Time:             249 pm CST
Start Location:         3.1 WSW Keys / Cherokee County / OK
Start Lat/Lon:          35.7796 / -95.0229

End Date:               January 10 2020
End Time:               257 pm CST
End Location:           1.7 SSE Park Hill / Cherokee County / OK
End Lat/Lon:            35.8369 / -94.9480

Survey Summary: This tornado damaged a roof of a permanent home and
the roofs of two mobile homes, uprooted a number of trees, and
damaged outbuildings.

.Cecil Arkansas Tornado...

Rating:                 EF-1
Estimated Peak Wind:    95 to 105 mph
Path Length /Statute/:  3.9 miles
Path Width /Maximum/:   400 yards
Fatalities:             0
Injuries:               0

Start Date:             January 10 2020
Start Time:             745 pm CST
Start Location:         3.2 ESE Cecil / Franklin County / AR
Start Lat/Lon:          35.4262 / -93.8928

End Date:               January 10 2020
End Time:               749 pm CST
End Location:           3.4 S Ozark / Franklin County / AR
End Lat/Lon:            35.4381 / -93.8244

Survey Summary: This tornado developed along the leading edge of a
line of thunderstorms, south of Highway 96. It moved east-northeast
damaging the roof of a home, destroying several outbuildings,
snapping or uprooting numerous trees, and blowing 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

The information in this statement is preliminary and subject to
change pending final review of the events and publication in NWS
Storm Data.


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