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Public Information Statement
National Weather Service Louisville, KY
518 AM EST Sun Feb 11 2024 /418 AM CST Sun Feb 11 2024/

...NWS Damage Survey for 2/10/2024 Tornado Event...

...Underwood Tornado...

Rating:                 EF-1
Estimated Peak Wind:    90 mph
Path Length /statute/:  1 mile
Path Width /maximum/:   75 yards
Fatalities:             0
Injuries:               0

Start Date:             2/10/2024       
Start Time:             4:49 AM EST             
Start Location:         0.8 mi SSW Underwood / Clark County / IN     
Start Lat/Lon:          38.5899 / -85.7786      

End Date:               2/10/2024       
End Time:               4:50 AM EST      
End Location:           1.2 mi SE Underwood / Clark County / IN
End Lat/Lon:            38.5888 / -85.7596     

Survey Summary:
The National Weather Service conducted a storm damage assessment
survey in Clark County, Indiana after the pre-dawn storms of
February 10, 2024. The survey team found a tornado on the south
side of Underwood starting at the shoulder on Interstate 65 and
continuing to just east of US 31.

The tornado touched down just east of mile marker 23 on Interstate
65. Some trees were snapped near the interstate with wind speeds
estimated at 85 mph, which is EF-0 with a width of 50 yards.

The tornado increased in windspeed and width at the end of
Henretty Road. The tornado destroyed two large older barns, taking
the metal sheeting from the barn and twisting it around numerous
trees. Some boards were impaled in the ground. Drone photography
was instrumental in determining the tornado by delineating downed
tree damage. Trees were snapped, uprooted, and topped, with trees
lying from the north northeast to the east southeasterly
direction. A nearby family home had soffit, gutter, and shingle
damage. Winds were estimated at 90 mph with a width of 75 yards.

The tornado continued to the east, snapping power poles along US
31 and uprooting a couple of trees. Winds were estimated at 80 mph
with a width of 60 yards.

The tornado did extensive damage along Old State Road. A mixture
of hardwood and softwood trees were facing from the north
northeast all the way to the southerly direction. Winds were
estimated at 87 mph with a width of 60 yards. There was no 
evidence of any further tornadic damage off Beagle Club Road past 
the large pond just east of Old State Road.

Even though there was a tornado, there were many dozens of trees
that were topped and uprooted by straight line winds in the
Underwood community. Some trees fell on outbuildings, power 
lines, and blocked roads including US 31. One home at 310 Henretty
Road had a large portion of the roof collapse into the bedroom. 
Fortunately, the homeowner had gone down to check on his sump pump
just before a large portion of the roof collapsed onto his bed. 
Winds were 85 mph at this location. The straight line winds
started by knocking over an Amazon truck on Interstate 65 at the
23 mile marker. Straight line wind damage in Underwood ranged from
75 to 85 mph.

There was sporadic straight line wind damage from Underwood to
Marysville and New Washington. The most significant damage was
near IN 3 and IN 203 at a sod farm, where a large 100 x 50 foot
barn had major roof and siding damage. Drone photography showed no
tree damage next to this barn and all of the barn damage fell to
the east into a field. Wind speeds were estimated to be 85 mph.

The survey team drove to Washington County, Indiana, and looked at
damage along Canton South Boston Road. Straight line winds of 80 
to 85 mph uprooted or snapped 11 trees in a forest grove on the 
west side of the road and destroyed two storage buildings. Debris 
from the storage buildings was thrown over the road and downwind 
up to 300 yards, all to the east northeast. 

The National Weather Service is grateful to Adam Reef of the 
Indiana Department of Homeland Security and to members of Clark 
County Emergency Management for their great assistance.

&&

EF Scale: The Enhanced Fujita Scale classifies tornadoes into the
following categories:

EF0.....65 to 85 mph
EF1.....86 to 110 mph
EF2.....111 to 135 mph
EF3.....136 to 165 mph
EF4.....166 to 200 mph
EF5.....>200 mph

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

$$

Gordon