Public Information Statement
Issued by NWS Quad Cities, IA IL

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000
NOUS43 KDVN 192043
PNSDVN
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009-
015>018-024>026-034-035-MOZ009-010-202045-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
343 PM CDT Fri May 19 2017

...NWS DAMAGE SURVEY FOR 05/17/2017 TORNADO EVENT...

.UPDATE TO ADD INFORMATION FOR 2 NEW TORNADOES TO THE PNS...

.TORNADO #1 Hooppole Illinois...

RATING:                 EF-1
ESTIMATED PEAK WIND:    95 MPH
PATH LENGTH /STATUTE/:  2.06 MILES
PATH WIDTH /MAXIMUM/:   50 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             05/17/2017
START TIME:             844 PM CDT
START LOCATION:         4.8 Miles WNW Hooppole/ Henry County/ Il
START LAT/LON:          41.5468 N / -89.9994 W

END DATE:               05/17/2017
END TIME:               847 PM CDT
END LOCATION:           4.4 Miles NW Hooppole/ Henry County/ Il
END LAT/LON:            41.5688 N / -89.9725 W

SURVEY SUMMARY: An EF-1 tornado caused damage mainly to large branches with a few uprooted
trees and snapped trunks. There was also damage to one outbuilding with part
of its roof removed.

.TORNADO # 2 Sherrard Illinois...

RATING:                 EF-1
ESTIMATED PEAK WIND:    105 MPH
PATH LENGTH /STATUTE/:  8.1 MILES
PATH WIDTH /MAXIMUM/:   150 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             05/17/2017
START TIME:             800 PM CDT
START LOCATION:         5.3 Miles S Sherrard/ Mercer County/ Il
START LAT/LON:          41.2447 N / -90.5062 W

END DATE:               05/17/17
END TIME:               809 PM CDT
END LOCATION:           5.2 Miles E  Sherrard/ Henry County / Il
END LAT/LON:            41.3329 N / -90.4052

SURVEY SUMMARY: A higher end EF-1 tornado caused damage to numerous outbuildings, a
few homes, and trees across Mercer and Henry Counties. 30 to 40 trees
were snapped at the trunks along with 50 trees experiencing limb damage.
A couple dozen trees were uprooted along the path. One house lost a partial
roof and another was impaled by flying debris.

.TORNADO #3 Galva Illinois...

RATING:                 EF-2
ESTIMATED PEAK WIND:    120 MPH
PATH LENGTH /STATUTE/:  1.29 MILES
PATH WIDTH /MAXIMUM/:   50 YARDS
FATALITIES:             0
INJURIES:               1

START DATE:             05/17/2017
START TIME:             920 PM CDT
START LOCATION:         2.0 Miles SSW Galva/ Henry County/ Il
START LAT/LON:          41.1533 N/-90.0811 W

END DATE:               May 17, 2017
END TIME:               921 PM CDT
END LOCATION:           0.8 Miles West Galva/ Henry County/ Il
END LAT/LON:            41.168 N / -90.066 W

SURVEY SUMMARY: A broad mesocyclone created widespread wind damage and a couple of
short lived suction vortices that lead to weak EF-2 tornado damage.
One vortice snapped two power poles and did significant damage to the
shingles of one house. Another vortice completely removed the roof of
a house and blew out doors. There was one 1 minor injury at this location.

.TORNADO # 4 Lake Darling State Park Iowa...

RATING:                 EF-1
ESTIMATED PEAK WIND:    110 MPH
PATH LENGTH /STATUTE/:  3.27 MILES
PATH WIDTH /MAXIMUM/:   25 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             05/17/2017
START TIME:             416 PM CDT
START LOCATION:         3.85 Miles W Pleasant Plain/ Jefferson County/ Ia
START LAT/LON:          41.1453 N/ -91.9313 W

END DATE:               05/17/2017
END TIME:               420 PM CDT
END LOCATION:           1.39 Miles W lake Darling State Park/ Washington County/ Ia
END LAT/LON:            41.1924 N/ -91.9241

SURVEY SUMMARY: A rapidly moving EF-1 tornado moved almost due north damaging farm
outbuildings and trees.

.TORNADO # 5 Riverside Iowa...

RATING:                 EF-1
ESTIMATED PEAK WIND:    110 MPH
PATH LENGTH /STATUTE/:  5.95 MILES
PATH WIDTH /MAXIMUM/:   40 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             05/17/2017
START TIME:             636 PM CDT
START LOCATION:         7.31 Miles NE Washington/ Washington County/ Ia
START LAT/LON:          41.3838 N/-91.6021 W

END DATE:               05/17/2017
END TIME:               642 PM CDT
END LOCATION:           3.75 Miles SE Riverside/ Washington County/ Ia
END LAT/LON:            41.4455 N/-91.5219 W

SURVEY SUMMARY: An EF-1 tornado spun up and tracked rapidly to the northeast. The tornado
damaged numerous farm outbuildings, power lines, and trees along the path.

.TORNADO # 6 WSW Illinois City Il...

RATING:                 EF-0
ESTIMATED PEAK WIND:    70 MPH
PATH LENGTH /STATUTE/:  0.71 MILES
PATH WIDTH /MAXIMUM/:   25 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             5/17/2017
START TIME:             504 PM CDT
START LOCATION:         8.5 Miles WSW Illinois City/ Rock Island County/IL
START LAT/LON:          41.3483 N/-91.0521 W

END DATE:               5/17/2017
END TIME:               505 PM CDT
END LOCATION:           8.0 Miles WSW Illinois City/ Rock Island County/IL
END LAT/LON:            41.3571 N/-91.0452 W

SURVEY SUMMARY: A tornado was observed by a storm chaser. Video evidence shows
a brief touchdown of a brief touchdown in a field. Rotation was consistent with
a wall cloud. No damage was observed and peak wind speed was estimated at 70 MPH.

.TORNADO # 7 Donahue Iowa...

RATING:                 EF-0
ESTIMATED PEAK WIND:    80 MPH
PATH LENGTH /STATUTE/:  2.14 MILES
PATH WIDTH /MAXIMUM/:   25 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             5/17/2017
START TIME:             744 PM CDT
START LOCATION:         3 Miles WNW Donahue/ Scott County/ Ia
START LAT/LON:          41.7003 N/-90.7228 W

END DATE:               5/17/2017
END TIME:               746 PM CDT
END LOCATION:           3.5 Miles NNW Donahue/ Scott County/ Ia
END LAT/LON:            41.7219 N/-90.6933 W

SURVEY SUMMARY: A Squall line tornado caused sporadic EF-0 damage
along its two mile path. Numerous trees were damage along with a few
rotten trees snapped. Roofing damage to a new home was noted at the
beginning of the path.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES BASED ON THE DAMAGE THEY CAUSE.

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.

$$

NICHOLS/DC



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