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Public Information Statement

Statement as of 2:10 PM CST on February 21, 2017

Expires 1:15 AM EST on February 22, 2017


Corrected for Noack tornado end location and lat/Lon.
Corrected for Noack tornado path length.

... NWS damage survey for 02/20/17 tornado events in eastern Williamson County...

.Overview... Storm surveys were conducted by NWS meteorologists across eastern
Williamson County... primarily in areas south of U.S. Highway 79 from south of
Taylor to Thrall... and just north/northeast of Thrall. These reports should
still be considered preliminary and some adjustments may be made to the tornado
paths and strengths over the coming days. Other damage surveys will continue
across south central Texas in the next few days.

.Thrall tornado...

Rating: EF-2
estimated peak wind: 118 mph
path length /statute/: 9.4 miles
path width /maximum/: 200 yards
fatalities: 0
injuries: 0

Start date: Feb 20 2017
start time: 1225 am CST
start location: 5 WSW Thrall / Williamson County / TX
start lat/lon: 30.5501 / -97.3594

End date: Feb 20 2017
end time: 1233 am CST
end location: 4 ENE Thrall / Williamson County / TX
end lat/lon: 30.6312 / -97.2436

Survey_summary: this tornado was the northern one of a pair on near parallel
tracks a few miles south of U.S. Highway 79. Damage was sporadic... but
concentrated when it occurred. The most significant damage was to a metal
building system home... at least five other single family homes... and 12
Railroad cars blown off the tracks east of Thrall. The train cars may have
also been affected by strong straight-line winds.

.Noack tornado...

Rating: EF-2
estimated peak wind: 112 mph
path length /statute/: 4.24 miles
path width /maximum/: 100 yards
fatalities: 0
injuries: 0

Start date: Feb 20 2017
start time: 1228 am CST
start location: 5 SW Thrall / Williamson County / TX
start lat/lon: 30.5443 / -97.3525

End date: Feb 20 2017
end time: 1231 am CST
end location: 1sse Thrall / Williamson County / TX
end lat/lon: 30.5709 / -97.2883

Survey_summary: this tornado was the southern one of a pair on near parallel
tracks a few miles south of U.S. Highway 79. Damage was sporadic... but
concentrated when it occurred. The most significant damage was to a 3-bin grain
storage facility... where the bins were completely destroyed and swept from their
foundations. Additional damage occurred to an extension of christ Lutheran
Church of Noack on FM 112... where the walls were bolted to the foundation.

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
chance pending final review of the events and publication in
NWS storm data.



210 PM CST Tue Feb 21 2017

Corrected for Noack tornado end location and lat/Lon.
Corrected for Noack tornado path length.

... NWS damage survey for 02/20/17 tornado events in eastern Williamson County...

.Overview... Storm surveys were conducted by NWS meteorologists across eastern
Williamson County... primarily in areas south of U.S. Highway 79 from south of
Taylor to Thrall... and just north/northeast of Thrall. These reports should
still be considered preliminary and some adjustments may be made to the tornado
paths and strengths over the coming days. Other damage surveys will continue
across south central Texas in the next few days.

.Thrall tornado...

Rating: EF-2
estimated peak wind: 118 mph
path length /statute/: 9.4 miles
path width /maximum/: 200 yards
fatalities: 0
injuries: 0

Start date: Feb 20 2017
start time: 1225 am CST
start location: 5 WSW Thrall / Williamson County / TX
start lat/lon: 30.5501 / -97.3594

End date: Feb 20 2017
end time: 1233 am CST
end location: 4 ENE Thrall / Williamson County / TX
end lat/lon: 30.6312 / -97.2436

Survey_summary: this tornado was the northern one of a pair on near parallel
tracks a few miles south of U.S. Highway 79. Damage was sporadic... but
concentrated when it occurred. The most significant damage was to a metal
building system home... at least five other single family homes... and 12
Railroad cars blown off the tracks east of Thrall. The train cars may have
also been affected by strong straight-line winds.

.Noack tornado...

Rating: EF-2
estimated peak wind: 112 mph
path length /statute/: 4.24 miles
path width /maximum/: 100 yards
fatalities: 0
injuries: 0

Start date: Feb 20 2017
start time: 1228 am CST
start location: 5 SW Thrall / Williamson County / TX
start lat/lon: 30.5443 / -97.3525

End date: Feb 20 2017
end time: 1231 am CST
end location: 1sse Thrall / Williamson County / TX
end lat/lon: 30.5709 / -97.2883

Survey_summary: this tornado was the southern one of a pair on near parallel
tracks a few miles south of U.S. Highway 79. Damage was sporadic... but
concentrated when it occurred. The most significant damage was to a 3-bin grain
storage facility... where the bins were completely destroyed and swept from their
foundations. Additional damage occurred to an extension of christ Lutheran
Church of Noack on FM 112... where the walls were bolted to the foundation.

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
chance pending final review of the events and publication in
NWS storm data.


1210 PM CST Tue Feb 21 2017

Corrected for longitude of start.

... NWS damage survey for 02/20/2017 thunderstorm wind event in
eastern Williamson County...

.Overview... Storm surveys were conducted by NWS meteorologists across eastern
Williamson County in the area north of U.S. Highway 79 from northwest to
north of Thrall. These reports should still be considered preliminary
and some adjustments may still be made to the wind damage path and strengths
over the coming days. Other damage surveys will continue over the next few
days across south central Texas.

.Thunderstorm wind...

Peak wind /E/: 118-138 mph
path length /statute/: 2 miles
path width /maximum/: 500 yards
fatalities: 0
injuries: 2

Start date: Feb 20 2017
start time: 1228 am CST
start location: 2 NW Thrall / Williamson County / TX
start lat/lon: 30.6082 / -97.3300

End date: Feb 20 2017
end time: 1233 am CST
end location: 2 N Thrall / Williamson County / TX
end lat/lon: 30.6137 / -97.3012

Survey_summary: while there was a strong circulation near the start of the
path... all of the damage observed was indicative of straight-line winds...
with debris strewn toward the east-northeast. At least 10 homes were
significantly damaged... and at least two dozen farm outbuildings...
Mobile homes... and rvs were severely damaged or destroyed. The most
significant damage was along CR 420... where three rvs were rolled and
through 2-3 cycles and destroyed. A couple suffered minor injuries in one
of the rvs. In addition... a metal-building-system building was destroyed.
The metal plates of the main beam supports were bolted with nuts or j-bolts
into the Concrete foundation... but were sheared or bent... and then torn away.
The entire roof and walls lofted and set down about 25 yards from the
foundation... but were severely bent and twisted.

Note:
the information in this statement is preliminary and subject to
change pending final review of the events and publication in
NWS storm data.



1210 PM CST Tue Feb 21 2017

Corrected for longitude of start.

... NWS damage survey for 02/20/2017 thunderstorm wind event in
eastern Williamson County...

.Overview... Storm surveys were conducted by NWS meteorologists across eastern
Williamson County in the area north of U.S. Highway 79 from northwest to
north of Thrall. These reports should still be considered preliminary
and some adjustments may still be made to the wind damage path and strengths
over the coming days. Other damage surveys will continue over the next few
days across south central Texas.

.Thunderstorm wind...

Peak wind /E/: 118-138 mph
path length /statute/: 2 miles
path width /maximum/: 500 yards
fatalities: 0
injuries: 2

Start date: Feb 20 2017
start time: 1228 am CST
start location: 2 NW Thrall / Williamson County / TX
start lat/lon: 30.6082 / -97.3300

End date: Feb 20 2017
end time: 1233 am CST
end location: 2 N Thrall / Williamson County / TX
end lat/lon: 30.6137 / -97.3012

Survey_summary: while there was a strong circulation near the start of the
path... all of the damage observed was indicative of straight-line winds...
with debris strewn toward the east-northeast. At least 10 homes were
significantly damaged... and at least two dozen farm outbuildings...
Mobile homes... and rvs were severely damaged or destroyed. The most
significant damage was along CR 420... where three rvs were rolled and
through 2-3 cycles and destroyed. A couple suffered minor injuries in one
of the rvs. In addition... a metal-building-system building was destroyed.
The metal plates of the main beam supports were bolted with nuts or j-bolts
into the Concrete foundation... but were sheared or bent... and then torn away.
The entire roof and walls lofted and set down about 25 yards from the
foundation... but were severely bent and twisted.

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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