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Public Information Statement
Issued: 7:29 PM MDT Sep. 20, 2017 – National Weather Service

... NWS damage survey for 09/19/17 tornado event...

.Tornado #1...

Rating: EF-1
estimated peak wind: 100 mph
path length /statute/: 2.9 miles
path width /maximum/: 155 yards
fatalities: 0
injuries: 0

Start date: September 19, 2017
start time: 746 PM CDT
start location: 5.5 SSW of Tulare, SD
start lat/lon: 44.6717 / -98.5656

End date: September 19, 2017
end time: 757 PM CDT
end location: 2.8 SW of Tulare, SD
end_lat/lon: 44.7089 / -98.5455

A tornado touched down 5.5 miles south southwest of Tulare, SD uprooting
a large Cottonwood tree in a field. The tornado then passed over pasture and
cropland before reaching a residence approximately 3 miles southwest of Tulare, SD.
Large tree branches were broke around The Farm yard. On the north side of The Farm
an outbuilding had significant structural and roof damage with tin from this
building lofted 0.6 miles to the north. Additionally two trees were uprooted along
the north edge of the property. The tornado track continued through a soybean field
with slight crop damage and debris evident along the path. About 2.8 miles southwest
of Tulare an irrigation unit was toppled and the corn crop was leveled with a
convergent wind pattern very obvious. The tornado lifted shortly thereafter.

.Tornado #2...

Rating: EF-0
estimated peak wind: 70 mph
path length /statute/: 0.1 miles
path width /maximum/: 10 yards
fatalities: 0
injuries: 0

Start date: September 19, 2017
start time: 855 PM CDT
start location: 4 miles SW of Clark, SD
start lat/lon: 44.8338 / -97.7961

End date: September 19, 2017
end time: 856 PM CDT
end location: 4 miles SW of Clark, SD
end_lat/lon: 44.8338 / -97.7961

Brief tornado touchdown in an open field, confirmed by trained spotter.

.Tornado #3...

Rating: EF-0
estimated peak wind: 70 mph
path length /statute/: 0.1 miles
path width /maximum/: 10 yards
fatalities: 0
injuries: 0

Start date: September 19, 2017
start time: 926 PM CDT
start location: 0.5 miles east of Bradley, SD
start lat/lon: 45.0904 / -97.6304

End date: September 19, 2017
end time: 927 PM CDT
end location: 0.5 miles east of Bradley, SD
end_lat/lon: 45.0904 / -97.630

Brief tornado touchdown in an open field, confirmed by a weathernation TV
meteorologist.

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 events and publication in
NWS storm data.



829 PM CDT Wed Sep 20 2017 /729 PM MDT Wed Sep 20 2017/

... NWS damage survey for 09/19/17 tornado event...

.Tornado #1...

Rating: EF-1
estimated peak wind: 100 mph
path length /statute/: 2.9 miles
path width /maximum/: 155 yards
fatalities: 0
injuries: 0

Start date: September 19, 2017
start time: 746 PM CDT
start location: 5.5 SSW of Tulare, SD
start lat/lon: 44.6717 / -98.5656

End date: September 19, 2017
end time: 757 PM CDT
end location: 2.8 SW of Tulare, SD
end_lat/lon: 44.7089 / -98.5455

A tornado touched down 5.5 miles south southwest of Tulare, SD uprooting
a large Cottonwood tree in a field. The tornado then passed over pasture and
cropland before reaching a residence approximately 3 miles southwest of Tulare, SD.
Large tree branches were broke around The Farm yard. On the north side of The Farm
an outbuilding had significant structural and roof damage with tin from this
building lofted 0.6 miles to the north. Additionally two trees were uprooted along
the north edge of the property. The tornado track continued through a soybean field
with slight crop damage and debris evident along the path. About 2.8 miles southwest
of Tulare an irrigation unit was toppled and the corn crop was leveled with a
convergent wind pattern very obvious. The tornado lifted shortly thereafter.

.Tornado #2...

Rating: EF-0
estimated peak wind: 70 mph
path length /statute/: 0.1 miles
path width /maximum/: 10 yards
fatalities: 0
injuries: 0

Start date: September 19, 2017
start time: 855 PM CDT
start location: 4 miles SW of Clark, SD
start lat/lon: 44.8338 / -97.7961

End date: September 19, 2017
end time: 856 PM CDT
end location: 4 miles SW of Clark, SD
end_lat/lon: 44.8338 / -97.7961

Brief tornado touchdown in an open field, confirmed by trained spotter.

.Tornado #3...

Rating: EF-0
estimated peak wind: 70 mph
path length /statute/: 0.1 miles
path width /maximum/: 10 yards
fatalities: 0
injuries: 0

Start date: September 19, 2017
start time: 926 PM CDT
start location: 0.5 miles east of Bradley, SD
start lat/lon: 45.0904 / -97.6304

End date: September 19, 2017
end time: 927 PM CDT
end location: 0.5 miles east of Bradley, SD
end_lat/lon: 45.0904 / -97.630

Brief tornado touchdown in an open field, confirmed by a weathernation TV
meteorologist.

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 events and publication in
NWS storm data.


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