June 17 Big Springs to McPherson County Storm Damage Summary - UPDATED

Tornadoes:

Tornadoes - Deuel to McPherson County Date June 17, 2018 Time (Local) 3:17 PM MDT - 5:17 PM CDT EF Rating 2 EF-1, 2 EF-0 Est. Peak Winds 100 mph Path Length 55 mi discontinuous Max Width 195 Yards Injuries/Deaths 0/0 Summary: A cyclic supercell moved along a cold frontal boundary during the afternoon and evening of June 17th. The storm produced several short-lived tornadoes that did sporadic damage between the town of Big Springs and about 15 miles southwest of Tryon in McPherson County. Track Map Interactive Map Click Here

Wooden Missile From Pig Shed (NWS) Tank Taco (NWS) Funnel in SW Keith Co (Tim Hill) Destroyed Shed (NWS)

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

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Wind & Hail:

Wind

An NWS Survey team was able to identify four tornado tracks and three areas of straight line wind damage. The most significant straight line wind damage was about 5 1/2 miles southwest of Big Springs when estimated 85 mph winds blew the roof off of a machine shed and removed the roof. Several water and feed tanks were blown as far away as one half mile. One steel watering tank was bent in half across a fence. There was also some damage in and around Big Springs, including an uprooted tree that due to straight line winds estimated to be around 70 mph. Just west of Big Springs, power poles were leaning and large tree limbs broken in the cemetery due to estimated 85 mph winds. North of town, an old outbuilding lost a portion of the roof and the cinder block wall collapsed due to estimated 80 mph winds.

5 1/2 SW Big Springs - est. 85 mph Straight Line Winds

5 1/2 SW Big Springs (NWS)	5 1/2 SW Big Springs (NWS)	Pushed over wall (NWS)	Est. 85MPH Winds (NWS)

Big Springs - est. 85 mph Straight Line Winds

Big Springs (NWS)	Big Springs (NWS)	Bent Wind Vane & Fence (NWS)	Big Springs Cemetery (NWS)

Tornado Photos & Video:

Tornado #1  Deuel County EF-1, Max winds 100 mph

Tornado 1 - EF-1 (NWS)	Tornado 1 - EF-1 (NWS)	Flipped Full Pivot (NWS)	Flipped Pivot and Tanks lying in different directions (NWS)

Tornado #4  McPherson County EF-1, Max winds 100 mph

Broken Windows (McPherson County Sheriff)	Broken Door Jamb (McPherson County Sheriff)	Est. 100 MPH Winds (McPherson County Sheriff)	Branch traveled a long way! (NWS)

Radar loop of Sunday afternoon and evening

Dark red outline: Tornado Watch

Bright red outline: Tornado Warning

Yellow outline: Severe Thunderstorm Warning

Radar loop courtesy of the Iowa Environmental Mesonet

Storm Survey Text

...NWS DAMAGE SURVEY FOR 06/17/2018 TORNADO EVENT- UPDATE #1...

.UPDATE...An NWS Survey team was able to identify four tornado
tracks and three areas of straight line wind damage. The most 
significant straight line wind damage was about 5 1/2 miles
southwest of Big Springs when estimated 85 mph winds blew the
roof off of a machine shed and removed the roof. Several 
water and feed tanks were blown as far away as one half mile. 
One steel watering tank was bent in half across a fence. 
There was also some damage in and around Big Springs, including
an uprooted tree that due to straight line winds estimated 
to be around 70 mph. Just west of Big Springs, power poles were
leaning and large tree limbs broken in the cemetery due to 
estimated 85 mph winds. North of town, an old outbuilding lost
a portion of the roof and the cinder block wall collapsed due
to estimated 80 mph winds. 

.OVERVIEW...A cyclic supercell moved along a cold frontal 
boundary during the afternoon and evening of June 17th. The 
storm produced several short-lived tornadoes that did sporadic
damage between the town of Big Springs and about 15 miles
southwest of Tryon in McPherson County. 

.Tornado #1 Deuel County Tornado...

Rating:                 EF-1
Estimated peak wind:    100 mph
Path length /Statute/:  2.14 miles
Path width /Maximum/:   162 yards
Fatalities:             0
Injuries:               0

Start date:             June 17, 2018
Start time:             3:17 PM MDT
Start location:         6.3 Miles West of Big Springs, NE

End date:               June 17, 2018
End time:               3:28 PM MDT
End location:           4.35 Miles Northwest of Big Springs, NE

SURVEY_SUMMARY: This tornado damaged two homesteads. The first 
homestead had a pig shed that lost a portion of the roof. 2x6 
beams were tossed 30 yards into the side of a garage, piercing 
the side of the garage. The tornado also ripped off asphalt 
shingles from a nearby outbuilding. The tornado then went on 
to another farm where two full pivots were flipped, one by
the tornado and one by straight line winds. The tornado also
broke large branches off of trees. 

.Tornado #2 Southwest Keith County...

Rating:                 EF-0
Estimated peak wind:    65 mph
Path length /Statute/:  0.1 miles
Path width /Maximum/:   10 yards
Fatalities:             0
Injuries:               0

Start date:             June 17, 2018 
Start time:             3:50 PM MDT
Start location:         6 Miles NW Brule, NE

End date:               June 17, 2018
End time:               3:50 PM MDT 
End location:           6 Miles NW Brule, NE

SURVEY_SUMMARY: Brief touchdown in an open field confirmed by
a photograph. 

.Tornado #3 Northeast Keith County...

Rating:                 EF-0
Estimated peak wind:    65 mph
Path length /Statute/:  0.1 miles
Path width /Maximum/:   10 yards
Fatalities:             0
Injuries:               0

Start date:             June 17, 2018
Start time:             5:01 PM CDT
Start location:         15 Miles NE Keystone, NE

End date:               June 17, 2018
End time:               5:01 PM CDT
End location:           15 Miles NE Keystone, NE

SURVEY_SUMMARY: Brief touchdown in an open field confirmed by
a photograph. 

.TORNADO #4 McPherson County Tornado...

Rating:                 EF-1
Estimated peak wind:    100 mph
Path length /Statute/:  21.4 miles
Path width /Maximum/:   195 yards
Fatalities:             0
Injuries:               0

Start date:             June 17, 2018
Start time:             5:13 PM CDT 
Start location:         15 Miles SW Tryon, NE

End date:               June 17, 2018
End time:               5:17 PM CDT
End location:           17 Miles SW Tryon, NE

SURVEY_SUMMARY: A rental house, and tree line was damaged by the 
tornado, and it also sent a piece of wood through a deer stand. The
tornado continued on to the northeast and hit another homestead where
the windows were shattered, a door was blown in and door jamb 
damaged while the residents attempted to hold the door shut. There 
was also full flipped pivot. 

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