Public Information Statement
Issued by NWS Shreveport, LA

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NOUS44 KSHV 162354
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ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-170800-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
654 PM CDT Fri Apr 16 2021

...Updated NWS Damage Survey Results for the April 7, 2021
Tornado and Severe Thunderstorm Event...

.Update: Tornado #2 track extended westward with the addition of
NSSL drone footage...


.Tornado #1 - Southeastern Bossier Parish...

Rating:                 EF1
Estimated Peak Wind:    100 mph
Path Length /statute/:  0.90 miles
Path Width /maximum/:   50.0 yards
Fatalities:             0
Injuries:               0

Start Date:             04/07/2021
Start Time:             04:33 PM CDT
Start Location:         9 SSW Doyline / Bossier Parish / LA
Start Lat/Lon:          32.3824 / -93.4585

End Date:               04/07/2021
End Time:               04:35 PM CDT
End Location:           9 S Doyline / Bossier Parish / LA
End Lat/Lon:            32.3835 / -93.4431

Summary: A brief tornado touched down along Fairview Point Rd.,
snapping a few trees. It continued eastward, lifting a section of
roofing material on a mobile home and snapping large tree limbs
near the Pine Cove Marina before lifting.


.Tornado #2 - Northern Red River/Southwestern Bienville...

Rating:                 EF1
Estimated Peak Wind:    105 mph
Path Length /statute/:  16.13 miles
Path Width /maximum/:   300.0 yards
Fatalities:             0
Injuries:               0

Start Date:             04/07/2021
Start Time:             04:35 PM CDT
Start Location:         12 W Hall Summit / Red River Parish / LA
Start Lat/Lon:          32.1749 / -93.5231

End Date:               04/07/2021
End Time:               04:58 PM CDT
End Location:           4 S Ringgold / Bienville Parish / LA
End Lat/Lon:            32.2707 / -93.2818

Summary: The tornado first touched down just east of Bayou Pierre
and completely destroyed a small metal outbuilding.  It then
moved along HWY 1 near the Westdale community, snapping and
uprooting numerous trees along Henry`s BBQ St. as it continued
eastward. The tornado crossed the Red River before taking a more
northeastward track, snapping and uprooting numerous trees along
HWY 515, US HWY 71, Stephens Rd., Boyette Rd., and Salters Rd.
The tornado snapped a few more trees before lifting along US HWY
371, just north of Woodardville. A special thanks goes out to the
National Severe Storms Laboratory (NSSL) for sharing uncrewed
aircraft data from a drone which they gathered on their research
mission.  This data unveiled new damage which was not observed
via the ground survey and increased the damage path length by
2.5 miles.


.Wind Damage - Northwestern Union Parish...

Estimated Peak Wind:    75-85 mph
Path Length /statute/:  5 miles
Path Width /maximum/:   2000 yards
Fatalities:             0
Injuries:               0

Start Date:             04/07/2021
Start Time:             04:48 PM CDT
Start Location:         5 NW of Spearsville / Union Parish / LA
Start Lat/Lon:          32.9925 / -92.6731

End Date:               04/07/2021
End Time:               04:53 PM CDT
End Location:           3 N of Spearsville / Union Parish / LA
End Lat/Lon:            32.9925 / -92.6010

Survey: A large collapsing thunderstorm produced widespread
damaging winds in northwestern Union parish around the Rum Center
community. The generated winds were generally highest, estimated
around 85 mph, at the start of the downburst near and south of the
intersection Tucker Store road and Pilgrims Rest Church road
intersection. Here many trees were uprooted and a few of these
trees damaged homes and outbuildings. Isolated to scattered downed
trees were noted farther east with damage intensifying back to the
75 to 80 mph range along Van Bennet and Ervin roads just south of
Tucker Store road, although here the damage was limited mostly to
uprooted trees with one home having partial loss of its tin roof
covering. The downburst damage signal quickly faded east of these
areas. It is worth noting the collapsing storm did display radar
rotation, although there was no tornado debris signature and all
downed trees were observed to fall generally in the southeasterly
direction. In addition, there were not indications of convergence
typical to tornadic damage in the downed trees, lending confidence
to the diagnosis of damage being caused by straight-line winds.

A special thanks goes out to Union Parish Emergency Management and
Union Parish Sheriffs Office for their assistance in the survey
process.


.Tornado #3 - Northwestern Ouachita Parish...

Rating:                 EF0
Estimated Peak Wind:    85 mph
Path Length /statute/:  2.8214 miles
Path Width /maximum/:   50.0 yards
Fatalities:             0
Injuries:               0

Start Date:             04/07/2021
Start Time:             06:48 PM CDT
Start Location:         5 SSE Downsville / Ouachita Parish / LA
Start Lat/Lon:          32.5509 / -92.3982

End Date:               04/08/2021
End Time:               06:51 PM CDT
End Location:           5 SE Downsville / Ouachita Parish / LA
End Lat/Lon:            32.569 / -92.355

Summary: This weak tornado started near the intersection of Abe
Benton road and Sibley road northwest of Calhoun. The narrow
tornado continued to track east northeast for a few miles, doing
pockets of minor tree damage across Highway 151, Francis road,
Leon Linder road, and around route 837 coming into the community
of Eureka before lifting. Fortunately, there was little to no
observed structural damage, although the survey team did
intermittently find some pieces of tin roofing that they could
not source. The initial portion of the tornado was coincident
with a tornado debris signature from the University of Louisiana
at Monroe radar, lending confidence to the tornado diagnosis.
Special thanks goes out to the Ouachita Parish Emergency
Management for their assistance in this survey.

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 200mph
EF5...Violent...>200mph

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

$$

12/50/04


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