Public Information Statement
Issued by NWS Central Illinois

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NOUS43 KILX 081958

Public Information Statement
National Weather Service Lincoln IL
158 PM CST Wed Mar 8 2017

...NWS DAMAGE SURVEY FOR 03/06/17 AND 03/07/17 EVENT - UPDATE 1...

An additional tornado was surveyed in Mason County, bringing the
total for the event to 3.


Rating:                 EF-1
Estimated peak wind:    110 mph
Path length /Statute/:  6.9 miles
Path width /Maximum/:   150 yards
Fatalities:             0
Injuries:               0

Start date:             03/06/2017
Start time:             11:52 pm CST
Start location:         2.2 mi. north-northwest of Easton (Mason Co.)
Start Lat/Lon:          40.2633 / -89.8563

End date:               03/06/2017
End time:               11:57 pm CST
End location:           7.7 mi. northeast of Easton (Mason Co.)
End_lat/lon:            40.3177 / -89.7497

SURVEY SUMMARY:  The tornado touched down in an open field 2.2 miles
north-northwest of Easton, and raced to the northeast. It did its
greatest damage at a homestead 2.5 miles north of Easton. Here, a
machine shed was severely damaged, with most of its roof removed and
part of the north wall bowed out. A nearby house under renovation
sustained damage as well, with part of the east wall blown out, but
lack of windows likely resulted in a wind tunnel effect that caused
the damage.

From here to the end of the track, much of the damage was to power poles
or overturned irrigation rigs. However, a farm along county road 2930E
(about 3/4 mile south of US-136) received damage as well. A grain silo
had half of its peaked roof caved in, and part of a machine shed had a
couple smaller wall pieces blown out. After that, the tornado continued
through mainly open fields before lifting near county road 1800N just
east of the intersection with 3200E.

After a 3.5 mile break, the parent mesocyclone went on to produce the
Green Valley tornado referenced below.


Rating:                 EF-1
Estimated peak wind:    105 mph
Path length /Statute/:  7.5 miles
Path width /Maximum/:   150 yards
Fatalities:             0
Injuries:               0

Start date:             Mar 7 2017
Start time:             12:00 am CST
Start location:         5.0 mi. southwest of Green Valley (Tazewell Co.)
Start Lat/Lon:          40.3459 / -89.6934

End date:               Mar 7 2017
End time:               12:06 am CST
End location:           3.0 mi. east-northeast of Green Valley (Tazewell Co.)
End_lat/lon:            40.9847 / -89.0370

SURVEY SUMMARY: The tornado began along Wagonseller Road about 5
miles southwest of Green Valley at 12:00 am in far southwest
Tazewell County, traveling to the northeast at 65 mph. The tornado
caused minor EF-0 damage to some outbuildings and trees initially,
before increasing strength.

The tornado widened to around 150 yards across and increased in
intensity to EF-1 as it destroyed an outbuilding and a historic
single room schoolhouse about 4 miles southwest of Green Valley.
It continued moving to the northeast through mainly open fields,
but did producing EF-1 damage to 2 grain bins. The tornado
produced more EF-1 damage to a barn and nearby trees along
Towerline Road. The tornado weakened to EF-0 and damaging trees
along Morris Mill Road, before dissipating about 3 miles east-
northeast of Green Valley at 12:06 am.


Rating:                 EF-2
Estimated peak wind:    115 mph
Path length /Statute/:  2.8 miles
Path width /Maximum/:   200 yards
Fatalities:             0
Injuries:               0

Start date:             Mar 7 2017
Start time:             12:09 am CST
Start location:         1.4 mi. north-northeast of Delavan (Tazewell Co.)
Start Lat/Lon:          40.3920 / -89.5381

End date:               Mar 7 2017
End time:               12:13 am CST
End location:           4.1 mi. northeast of Delavan (Tazewell Co.)
End_lat/lon:            40.4172 / -89.4965

SURVEY SUMMARY: The tornado began in an open field about 1.4
miles north-northeast of Delavan at 12:09 am in south-central
Tazewell County, traveling to the northeast at 65 mph. The tornado
widened to 200 yards and caused EF-2 damage to one outbuilding
and EF-1 damage to several other outbuildings and trees, tossing
much of the damaged material for a mile in a debris path to the

The tornado continued northeast and did EF-1 damage to more
outbuildings and 4 grain bins, tossing that debris for a half mile
to the northeast. The tornado produced EF-1 damage to more trees
along Toboggan Ave before dissipating in an open field 4.1 miles
northeast of Delavan at 12:13 am.

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*

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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