6/6/18 Albany County/Laramie Area Tornadoes Rated EF-3 and EF-2

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Public Information Statement
National Weather Service Cheyenne, WY
430 PM MDT Thu Jun 7 2018

...NWS DAMAGE SURVEY FOR 06/06/18 TORNADO EVENT...

OVERVIEW...

An isolated supercell thunderstorm developed in central Albany
County about 8 miles north of Laramie during the late afternoon on
06/06/18. The storm initially produced a tornado 3 to 4 miles
west of Highway 30. The tornado tracked east across Highway 30 and
intensified rapidly moving through mainly open fields. Numerous
wooden power poles were snapped along County Road 121, along with
several galvanized steel utility poles which were bent 90 degrees
at the base. Grass was scoured out of the ground in a wide swath
approximately one third of a mile in width near the intersection
of County Road 121 and Cattle Drive. This is consistent with an
EF-3 tornado. The tornado was observed to continue east up into
the Laramie Range near King Mountain Road for a period of over 45
minutes.

A satellite tornado developed 2 miles to the south of the parent
tornado. This tornado damaged treetops and caused significant
structural damage to a well-built attached garage, which
collapsed as it lifted off the foundation and shifted to the
east. The damage to the garage was consistent with an EF-2
tornado. In addition, several nearby structures had minor damage
to siding and shingles. The tornado was observed moving through
the Antelope Ridge Loop subdivision, 6 miles north of Laramie, and
into open country.

.Main Tornado...

Rating:                 EF-3
Estimated peak wind:    150 mph
Path length /Statute/:  11.3 miles
Path width /Maximum/:   600 yards
Fatalities:             0
Injuries:               0

Start date:             June 06 2018
Start time:             5:43 pm MDT
Start location:         8 Miles North of Laramie, Wyoming
Start Lat/Lon:          41.469, -105.676

End date:               June 06 2018
End time:               6:36 pm MDT
End location:           12 Miles northeast of Laramie, Wyoming
End_lat/lon:            41.469, -105.460

.Satellite Tornado...

Rating:                 EF-2
Estimated peak wind:    120 mph
Path length /Statute/:  0.6 miles
Path width /Maximum/:   50 yards
Fatalities:             0
Injuries:               0

Start date:             June 06 2018
Start time:             5:43 pm MDT
Start location:         6 Miles North of Laramie, Wyoming
Start Lat/Lon:          41.416, -105.605

End date:               June 06 2018
End time:               6:05 pm MDT
End location:           6 miles North of Laramie, Wyoming
End_lat/lon:            41.416, -105.597

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|

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

$$

Cox/Hammer/Lyons/Braun