NWS Damage Survey For 07/19/2019 Polk/Barron County Tornadoes

NWS Damage Survey For 07/19/2019 Polk/Barron County Tornadoes

.Overview...Two tornadoes embedded within a large swath of straight
line winds occurred Friday, July 19th across Polk and Barron
counties. While many trees were damaged across both counties, it was
clear given the tree fall pattern which resulted from straight line
winds and which were the result of tornadoes.

.Upper Turtle Lake Tornado...

Rating:                EF-0
Estimated Peak Wind:   75 mph
Path Length /statute/: 0.8 miles
Path Width /maximum/:  50 yards
Fatalities:            0
Injuries:              0

Start Date:            7/19/2019
Start Time:            5:44 PM CDT
Start Location:        3ENE of Village of Turtle Lake, WI
Start Lat/Lon:         45.4128 / -92.0854

End Date:              7/19/2019
End Time:              5:50 PM CDT
End Location:          3ENE of Village of Turtle Lake, WI
End Lat/Lon:           45.4066 / -92.0743

A brief EF0 tornado caused uprooted and downed trees alongside
damage to roof panels of outbuildings on a farmstead 2.9 miles
northeast of the Village of Turtle Lake, Wisconsin on Friday
evening.  Maximum winds were estimated to be 75 miles per hour.

.Horseshoe Lake Tornado...

Rating:                EF-1
Estimated Peak Wind:   90 mph
Path Length /statute/: 3.0 miles
Path Width /maximum/:  1/3 mile
Fatalities:            0
Injuries:              0

Start Date:            7/19/2019
Start Time:            5:36 PM CDT
Start Location:        3NW of Village of Turtle Lake, WI
Start Lat/Lon:         45.4321 / -92.1811

End Date:              7/19/2019
End Time:              5:49 PM CDT
End Location:          3NE of Village of Turtle Lake, WI
End Lat/Lon:           45.4373 / -92.1210

An EF1 tornado uprooted and downed trees in a concentrated path
beginning 3.3 miles northwest of the Village of Turtle Lake
Wisconsin on Friday evening, ending 3 miles northeast of the Village
of Turtle Lake.  Maximum winds were estimated to be 90 mph with a
path length of 3 miles, and a max width of 1/3 mile.

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

.Polk and Barron County Thunderstorm Wind Damage...

In addition to the two tornadoes, widespread straight line winds
raked across northern and eastern Polk County and most of Barron
County. Most of the damage was to trees, although some light
structural damage was also noted. Trees fell toward the east
southeast, which is consistent with the strong west northwest wind.
Maximum wind was estimated at 90 mph given the tree damage and a
measured gust of 84 mph in Cushing, WI (Polk County.) The same
weather station measured a sustained 73 mph wind for 5 minutes.


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