National Weather Service Raw Text Product

Displaying AFOS PIL: PNSTSA Received: 2018-04-15 21:24 UTC

NOUS44 KTSA 152124

Public Information Statement
National Weather Service Tulsa OK
424 PM CDT Sun Apr 15 2018


.OVERVIEW...A supercell developed over northeastern Le Flore County
Oklahoma during the afternoon of April 13th. The storm intensified as
it moved northeast into northern Sebastian County and southern 
Crawford County Arkansas, where it produced a strong tornado. 
Another storm produced a weak tornado over northeastern Sebastian 
County Arkansas and southwestern Franklin County Arkansas. An NWS 
storm damage survey team investigated these areas on April 14th. The
following summarizes the results of their survey.

.Mountainburg Arkansas Tornado...

Rating:                 EF-2
Estimated Peak Wind:    110 to 120 mph
Path Length /Statute/:  11.7 miles
Path Width /Maximum/:   1000 yards
Fatalities:             0
Injuries:               4

Start Date:             April 13 2018 
Start Time:             404 pm CDT
Start Location:         1.5 NNE Rudy / Crawford County / AR
Start Lat/Lon:          35.5490 / -94.2621

End Date:               April 13 2018
End Time:               419 pm CDT
End Location:           3.1 ESE Chester / Crawford County / AR
End Lat/Lon:            35.6730 / -94.1222

Survey Summary: This tornado developed north of Rudy where numerous
trees were snapped and uprooted as it crossed Frog Bayou Drive. The
tornado then severely damage a home, destroyed outbuildings, and
snapped or uprooted numerous trees on Stapp Lane. Outbuildings were
destroyed and numerous trees were snapped or uprooted as the tornado
crossed Lancaster Road and County Road 27. The tornado continued to
move northeast across Highway 282 and I-49 where several cars were
rolled off the highway and severe damage to trees was noted. Several
mobile homes were destroyed, a permanent home was damaged, and severe
tree damage was noted as the tornado moved across Overlook Trail. A
well-built outbuilding was destroyed and a home was severely damaged
on Locust Mountain Road. Numerous trees were also snapped and
uprooted in this area. Another home was severely damaged on Dollard
Road before moving into Mountainburg, where numerous homes and
businesses were damaged, outbuildings were destroyed, and trees and
power poles were blown down. The tornado then moved south and finally
east of Lake Fort Smith, where homes were damaged, outbuildings were
destroyed, and trees and power poles were blown down. 

.Lavaca Arkansas Tornado...

Rating:                 EF-1
Estimated Peak Wind:    85 to 95 mph
Path Length /Statute/:  5.6 miles
Path Width /Maximum/:   400 yards
Fatalities:             0
Injuries:               0

Start Date:             April 13 2018 
Start Time:             546 pm CDT
Start Location:         4.3 E Lavaca / Crawford County / AR
Start Lat/Lon:          35.3300 / -94.1006

End Date:               April 13 2018
End Time:               554 pm CDT
End Location:           6 SW Cecil / Franklin County / AR
End Lat/Lon:            35.3896 / -94.0341

Survey Summary: This tornado developed about a mile west of the
Sebastian/Franklin County line near Military Road where trees were
uprooted and power poles were snapped. The tornado moved northeast
and damaged a mobile home, and uprooted trees as it crossed James
Road and Ridge Road. Large tree limbs were snapped as it crossed
Highway 217 and Highway 215 before dissipating south of Case Road.

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.