Quad Cities, IA/IL

Weather Forecast Office

May 17, 2017: Damage Surveys & Event Review

Overview

Fast moving severe thunderstorms developed and tracked over much of eastern Iowa, northwest Illinois, and northeast Missouri on Wednesday, May 17, 2017, as an area of low pressure lifted northeast into northwest Iowa. Widespread damaging winds, large hail, frequent lightning, and a few brief tornadoes were reported.

Surface Map/Radar Loop

Tornadoes:

Damage Survey Viewer

Tornado 1 - Hooppole, IL
HENRY COUNTY

Date	5/17/2017
Time (Local)	844PM - 847PM
EF Rating	EF-1
Est. Peak Winds	95 MPH
Path Length	2.06 MILES
Max Width	50 YARDS
Injuries/Deaths	0 / 0
Summary: An EF-1 tornado caused damage mainly to large branches with a few uprooted trees and snapped trunks. Damage to one outbuilding with part of the roof removed.

Track Map

Tornado 2 - Sherrard, IL
MERCER/HENRY COUNTIES

Date	5/17/2017
Time (Local)	800PM - 809PM
EF Rating	EF-1
Est. Peak Winds	105 MPH
Path Length	8.11 MILES
Max Width	150 YARDS
Injuries/Deaths	0/0
Summary: A higher end EF-1 tornado caused damage to numerous outbuildings, a few homes and over 50 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.

Track Map

Tornado 3 - Galva, IL
HENRY COUNTY

Date	5/17/2017
Time (Local)	920 - 921 PM CDT
EF Rating	EF-2
Est. Peak Winds	120 MPH
Path Length	1.29 MILES
Max Width	50 YARDS
Injuries/Deaths	1/0
Summary: A broad mesocyclone created widespread wind damage and a couple of vortices that lead to weak EF-2 damage along the 1.29 mile path of the tornado. One vortice snapped two power poles and a did significant damage to the shingles of one house. A second vortice completely removed the roof of a house and blew out doors. There was one minor injury at this location.

Track Map

Tornado 4 - Lake Darling State Park, IA
JEFFERSON/WASHINGTON COUNTIES

Date	5/17/2017
Time (Local)	416 - 420 PM CDT
EF Rating	EF-1
Est. Peak Winds	110 MPH
Path Length	3.27 MILES
Max Width	25 YARDS
Injuries/Deaths	0/0
Summary: A rapidly moving EF-1 tornado move almost due north damaging farm outbuildings and trees.

Track Map

Tornado 5 - Riverside, IA
WASHINGTON COUNTY

Date	5/17/2017
Time (Local)	636 - 642 PM CDT
EF Rating	EF-1
Est. Peak Winds	110 MPH
Path Length	5.95 Miles
Max Width	40 YARDS
Injuries/Deaths	0/0
Summary: An EF-1 tornado spun p and tracked rapidly to the northeast. The tornado damaged numerous farm outbuildings, power lines, and trees along the path.

Track Map

Tornado 6 - 5 SSE Muscatine, IA in Illinois
ROCK ISLAND COUNTY

Date	5/17/2017
Time (Local)	504 - 505 PM CDT
EF Rating	EF-0
Est. Peak Winds	70 MPH
Path Length	0.71 MILES
Max Width	25 YARDS
Injuries/Deaths	0 / 0
Summary: Short-lived EF-0 tornado was observed and recorded on video by a storm chaser.

Track Map

Tornado 7 - Donahue, IA
SCOTT COUNTY

Date	5/17/2017
Time (Local)	744 - 746 PM CDT
EF Rating	EF-0
Est. Peak Winds	80
Path Length	2.14 MILES
Max Width	25 YARDS
Injuries/Deaths	0/0
Summary: A squall linie tornado caused sporadic EF-0 damage along its two mile path. Numerous trees were damaged along with a few rotten trees snapped. Roofing damage to a new home and garage were noted at the beginning of the path.

Track Map

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

Radar:

Interactive Radar Loop - Courtesy IEM Mesonet

Storm Reports

Interactive Storm Report Map	SPC Storm Reports


PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE QUAD CITIES IA IL ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0250 PM HAIL MARENGO 41.80N 92.07W 05/17/2017 M0.25 INCH IOWA IA EMERGENCY MNGR 0300 PM NON-TSTM WND GST MIDDLETOWN 40.83N 91.26W 05/17/2017 E65.00 MPH DES MOINES IA TRAINED SPOTTER 0312 PM HAIL URBANA 42.22N 91.88W 05/17/2017 M0.50 INCH BENTON IA EMERGENCY MNGR 0340 PM NON-TSTM WND DMG DAVENPORT 41.56N 90.60W 05/17/2017 SCOTT IA TRAINED SPOTTER TREE DAMAGED BY VANDER VEER PARK 0345 PM NON-TSTM WND DMG N WEST LIBERTY 41.58N 91.26W 05/17/2017 MUSCATINE IA TRAINED SPOTTER 9-12 INCH DIAMETER LIMBS DOWN NEAR COLUMBUS AVE 0345 PM HEAVY RAIN KEOSAUQUA 40.73N 91.96W 05/17/2017 E0.00 INCH VAN BUREN IA TRAINED SPOTTER VERY HEAVY RAIN - VISIBILITIES REDUCED SIGNIFICANTLY 0356 PM HAIL FARMINGTON 40.64N 91.74W 05/17/2017 E0.25 INCH VAN BUREN IA FIRE DEPT/RESCUE TIME ESTIMATED - PEA TO DIME SIZE HAIL DURING STORM 0356 PM TSTM WND DMG FARMINGTON 40.64N 91.74W 05/17/2017 VAN BUREN IA FIRE DEPT/RESCUE BRANCHES DOWN 0410 PM TSTM WND GST FAIRFIELD 41.01N 91.97W 05/17/2017 M55.00 MPH JEFFERSON IA AWOS 0411 PM HAIL 1 NNW MOUNT PLEASANT 40.97N 91.56W 05/17/2017 M0.25 INCH HENRY IA TRAINED SPOTTER PEA TO DIME SIZE HAIL 0411 PM TSTM WND DMG FAIRFIELD 41.01N 91.97W 05/17/2017 JEFFERSON IA TRAINED SPOTTER 2 SEMIS ON HWY 34 BLOWN OVER 0416 PM TORNADO 4 W PLEASANT PLAIN 41.15N 91.93W 05/17/2017 F1 JEFFERSON IA NWS STORM SURVEY A RAPIDLY MOVING EF-1 TORNADO MOVED ALMOST DUE NORTH FROM ABOUT 4 MILES WEST OF PLEASANT PLAIN IN JEFFERSON COUNTY TO ABOUT 1.5 MILES WEST OF LAKE DARLING STATE PARK IN WASHINGTON COUNTY DAMAGING FARM OUTBUILDINGS AND TREES. ESTIMATED PEAK WINDS WERE 110 MPH. PATH LENGTH WAS 3.27 MILES. MAXIMUM PATH WIDTH WAS 25 YARDS. IT LASTED FOR ABOUT 4 MINUTES. 0420 PM TSTM WND DMG 1 E RUBIO 41.22N 91.91W 05/17/2017 WASHINGTON IA TRAINED SPOTTER TIME ESTIMATED - SEVERAL TREES DAMAGED. BOARDS BLOWN OFF RAILROAD WALKWAY, GROUND COVERED WITH LEAVES 0420 PM TORNADO 1 ESE RICHLAND 41.18N 91.98W 05/17/2017 KEOKUK IA FIRE DEPT/RESCUE TORNADO MOVED NORTHEAST INTO WASHINGTON COUNTY. 0420 PM HAIL MOUNT PLEASANT 40.96N 91.55W 05/17/2017 E0.50 INCH HENRY IA TRAINED SPOTTER 0420 PM HAIL MOUNT PLEASANT 40.96N 91.55W 05/17/2017 E1.75 INCH HENRY IA BROADCAST MEDIA VIA SOCIAL MEDIA - TIME ESTIMATED 0420 PM TSTM WND DMG WELLMAN 41.47N 91.84W 05/17/2017 WASHINGTON IA LAW ENFORCEMENT TIME ESTIMATED - OUTBUILDINGS, SHED, WINDOWS AND ROOFS DAMAGED 0421 PM HAIL 1 SW DYERSVILLE 42.47N 91.13W 05/17/2017 M1.00 INCH DUBUQUE IA TRAINED SPOTTER 0428 PM HAIL MOUNT UNION 41.06N 91.39W 05/17/2017 M1.25 INCH HENRY IA EMERGENCY MNGR 0430 PM TSTM WND DMG 2 W YARMOUTH 41.03N 91.36W 05/17/2017 DES MOINES IA TRAINED SPOTTER TIME IS ESTIMATED - LARGE TREE BRANCH APPROX 18 FEET LONG WAS TORN OFF TREE 0440 PM TSTM WND DMG WELLMAN 41.47N 91.84W 05/17/2017 WASHINGTON IA LAW ENFORCEMENT ROOF OFF A SHED, A GARAGE, A HOG BUILDING AND A HORSE SHED. ANOTHER GARAGE TORN OFF A HOUSE. TREES AND POWER LINES DOWN. LARGE TREE DOWN ON A ROAD. TIME ESTIMATED BY RADAR. 0452 PM HAIL SSE GRANDVIEW 41.28N 91.19W 05/17/2017 M1.00 INCH LOUISA IA TRAINED SPOTTER DELAYED REPORT, TIME ESTIMATED 0454 PM HAIL 3 W OXFORD 41.72N 91.85W 05/17/2017 M0.50 INCH IOWA IA TRAINED SPOTTER PEA TO DIMES 0504 PM TORNADO 5 SSE MUSCATINE 41.35N 91.05W 05/17/2017 ROCK ISLAND IL STORM CHASER SHORT-LIVED EF0 TORNADO WAS OBSERVED BY A STORM CHASER. VIDEO EVIDENCE OF THE CIRCULATION DETAILED A TORNADO THAT LASTED AROUND A MIN. NO DAMAGE WAS OBSERVED. THE PEAK WINDS WERE ESTIMATED AROUND 70 MPH. 0511 PM HAIL 3 NE MUSCATINE 41.46N 91.03W 05/17/2017 M1.00 INCH MUSCATINE IA TRAINED SPOTTER 0514 PM HAIL 3 NE MUSCATINE 41.45N 91.04W 05/17/2017 M0.88 INCH MUSCATINE IA TRAINED SPOTTER 0523 PM HAIL 3 S DURANT 41.56N 90.91W 05/17/2017 M1.75 INCH MUSCATINE IA TRAINED SPOTTER 0531 PM NON-TSTM WND DMG 1 E WYANET 41.36N 89.56W 05/17/2017 BUREAU IL TRAINED SPOTTER DUST STORM ALONG ROUTE 6 - TRAFFIC BACKED UP DUE TO ACCIDENTS 0536 PM TSTM WND DMG ROCK FALLS 41.77N 89.69W 05/17/2017 WHITESIDE IL BROADCAST MEDIA TREE BLOWN ONTO HOME ON 6TH AVE. RELAYED BY KWQC. TIME ESTIMATED ON RADAR. 0540 PM HAIL 1 S DIXON 41.73N 90.78W 05/17/2017 E1.00 INCH SCOTT IA TRAINED SPOTTER MIX OF DIME TO QUARTER SIZE HAIL. 0542 PM TSTM WND GST MARENGO 41.80N 92.07W 05/17/2017 M60.00 MPH IOWA IA TRAINED SPOTTER RELAYED FROM DSM 0542 PM TSTM WND DMG MARENGO 41.80N 92.07W 05/17/2017 IOWA IA TRAINED SPOTTER RELAYED FROM DSM - LARGE TREE DOWN 0546 PM TSTM WND GST BLAIRSTOWN 41.91N 92.08W 05/17/2017 M70.00 MPH BENTON IA EMERGENCY MNGR 0548 PM HEAVY RAIN MEMPHIS 40.46N 92.17W 05/17/2017 E0.50 INCH SCOTLAND MO LAW ENFORCEMENT RAIN FELL WITHIN 15 MINUTES - WATER GUSHING OUT OF FIELDS IS CAUSING TRAFFIC PROBLEMS 0552 PM HAIL S NORTH ENGLISH 41.52N 92.08W 05/17/2017 M1.00 INCH IOWA IA PUBLIC ALSO REPORTING WINDS UP TO 55 MPH AND HEAVY RAIN. 0552 PM HAIL BATAVIA 40.99N 92.17W 05/17/2017 E1.75 INCH JEFFERSON IA TRAINED SPOTTER HAIL LASTED 10 MINUTES AND IS COVERING THE GROUND 0553 PM TSTM WND GST VAN HORNE 42.01N 92.09W 05/17/2017 M70.00 MPH BENTON IA EMERGENCY MNGR 0557 PM TSTM WND DMG NEWHALL 41.99N 91.97W 05/17/2017 BENTON IA PUBLIC ROOF BLOWN OFF HOME, PICTURE FROM TWITTER 0600 PM HAIL FAIRFAX 41.92N 91.78W 05/17/2017 E0.50 INCH LINN IA COCORAHS 1 INCH DEEP - MINOR LEAF DAMAGE 0605 PM TSTM WND DMG E FREEPORT 42.29N 89.63W 05/17/2017 STEPHENSON IL LAW ENFORCEMENT LARGE TREE BLOWN DOWN BLOCKING ROAD ON EAST SIDE OF FREEPORT. 0608 PM TSTM WND GST SHELLSBURG 42.09N 91.87W 05/17/2017 E70.00 MPH BENTON IA TRAINED SPOTTER 0610 PM TSTM WND GST FAIRFAX 41.92N 91.78W 05/17/2017 E70.00 MPH LINN IA EMERGENCY MNGR 0615 PM TSTM WND GST JESUP 42.48N 92.07W 05/17/2017 E65.00 MPH BUCHANAN IA PUBLIC 0615 PM TSTM WND GST 2 SSW LADORA 41.73N 92.20W 05/17/2017 M70.00 MPH IOWA IA TRAINED SPOTTER 0615 PM HEAVY RAIN JESUP 42.48N 92.07W 05/17/2017 E0.50 INCH BUCHANAN IA PUBLIC RAIN FELL WITHIN 10 MINUTES 0616 PM HEAVY RAIN 2 SSW LADORA 41.73N 92.20W 05/17/2017 M1.70 INCH IOWA IA TRAINED SPOTTER FALLEN OVER THE PAST 20 MINUTES 0616 PM TSTM WND GST CEDAR RAPIDS 41.97N 91.67W 05/17/2017 M54.00 MPH LINN IA ASOS 0617 PM HAIL 2 ESE KEOSAUQUA 40.72N 91.92W 05/17/2017 M1.00 INCH VAN BUREN IA TRAINED SPOTTER HAIL LASTED FOR A MINUTE 0620 PM TSTM WND DMG NORTH LIBERTY 41.74N 91.61W 05/17/2017 JOHNSON IA PUBLIC TREE BLOWN OVER, TIME ESTIMATED. 0621 PM HAIL WALKER 42.29N 91.78W 05/17/2017 E0.50 INCH LINN IA PUBLIC PEA SIZE AND LARGER 0621 PM TSTM WND GST 1 SSE CEDAR RAPIDS 41.95N 91.66W 05/17/2017 M70.00 MPH LINN IA TRAINED SPOTTER 0627 PM TSTM WND GST 5 NNE CEDAR RAPIDS 42.05N 91.63W 05/17/2017 M60.00 MPH LINN IA TRAINED SPOTTER 0628 PM TSTM WND GST 1 W RYAN 42.35N 91.50W 05/17/2017 M89.00 MPH DELAWARE IA FIRE DEPT/RESCUE 0628 PM TSTM WND GST 2 ENE MARION 42.04N 91.56W 05/17/2017 E70.00 MPH LINN IA TRAINED SPOTTER WIND ESTIMATED 60 - 70 MPH RAIN IS HORIZONTAL 0630 PM TSTM WND GST 1 WNW INDEPENDENCE 42.47N 91.91W 05/17/2017 M50.00 MPH BUCHANAN IA TRAINED SPOTTER 0632 PM TSTM WND GST RYAN 42.35N 91.48W 05/17/2017 M60.00 MPH DELAWARE IA EMERGENCY MNGR 0635 PM TSTM WND GST WASHINGTON 41.30N 91.69W 05/17/2017 M67.00 MPH WASHINGTON IA AWOS 0636 PM TORNADO 7 NE WASHINGTON 41.37N 91.60W 05/17/2017 WASHINGTON IA NWS STORM SURVEY 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. THE PEAK WIND SPEED WAS 110 MPH WITH A PATH LENGTH OF 5.95 MILES AND A MAX WIDTH OF 40 YARDS. 0637 PM HAIL 5 WNW MOUNT PLEASANT 40.98N 91.64W 05/17/2017 E2.00 INCH HENRY IA PUBLIC 0637 PM HAIL 1 E ROME 40.98N 91.66W 05/17/2017 M1.75 INCH HENRY IA AMATEUR RADIO 0640 PM HAIL NW MOUNT PLEASANT 40.96N 91.55W 05/17/2017 M1.75 INCH HENRY IA 911 CALL CENTER 0640 PM TSTM WND GST ANAMOSA 42.11N 91.28W 05/17/2017 M58.00 MPH JONES IA MESONET RWIS REPORT NEAR HWY 151. 0645 PM TSTM WND DMG ANAMOSA 42.11N 91.28W 05/17/2017 JONES IA EMERGENCY MNGR TIME APPROXIMATE - TREE ON HOUSE 0646 PM HAIL SW RIVERSIDE 41.48N 91.58W 05/17/2017 M1.50 INCH WASHINGTON IA TRAINED SPOTTER 0648 PM HAIL 2 SSE HILLS 41.55N 91.53W 05/17/2017 E0.75 INCH JOHNSON IA TRAINED SPOTTER PEA SIZE AND LARGER 0648 PM TSTM WND DMG LONE TREE 41.49N 91.42W 05/17/2017 JOHNSON IA EMERGENCY MNGR PARKED SEMI BLOWN OVER AND DAMAGE TO FARM OUTBUILDINGS. POWER POLES DOWN. STRAIGHT LINE WIND DAMAGE. 0649 PM TSTM WND DMG LONE TREE 41.49N 91.42W 05/17/2017 JOHNSON IA EMERGENCY MNGR BARN BLOWN DOWN IN LONE TREE ON 640TH AND SOO, REPORTED BY SHERIFFS DEPUTY TO EM. TIME ESTIMATED 0649 PM HAIL 2 SW BURLINGTON 40.78N 91.15W 05/17/2017 M0.50 INCH DES MOINES IA TRAINED SPOTTER 0651 PM TSTM WND GST ONEIDA 42.54N 91.35W 05/17/2017 E75.00 MPH DELAWARE IA EMERGENCY MNGR 0652 PM TSTM WND GST 1 S EDGEWOOD 42.63N 91.40W 05/17/2017 E70 MPH DELAWARE IA TRAINED SPOTTER TIME ESTIMATED BASED ON RADAR. 0657 PM TSTM WND GST SW DYERSVILLE 42.48N 91.12W 05/17/2017 M72.00 MPH DUBUQUE IA EMERGENCY MNGR 0657 PM HAIL IOWA CITY 41.66N 91.54W 05/17/2017 E0.25 INCH JOHNSON IA PUBLIC 0659 PM TSTM WND DMG WEST BRANCH 41.67N 91.35W 05/17/2017 CEDAR IA PUBLIC 60 FOOT TREE THROUGH A GARAGE IN TOWN. 0700 PM TSTM WND DMG 2 WSW NEW VIENNA 42.54N 91.16W 05/17/2017 DELAWARE IA TRAINED SPOTTER SEVERAL FARM BUILDINGS DAMAGED NEAR DYERSVILLE 0704 PM TSTM WND GST HOLY CROSS 42.60N 91.00W 05/17/2017 M78.00 MPH DUBUQUE IA EMERGENCY MNGR 0713 PM HEAVY RAIN 1 NW WILLIAMSTOWN 41.58N 91.75W 05/17/2017 M1.75 INCH JOHNSON IA TRAINED SPOTTER RAIN IN 20 MINUTES. 0718 PM HAIL WSW CLARENCE 41.88N 91.06W 05/17/2017 E0.25 INCH CEDAR IA TRAINED SPOTTER HAIL AND VERY STRONG WIND 0719 PM HEAVY RAIN WNW PARNELL 41.58N 92.01W 05/17/2017 M0.97 INCH IOWA IA TRAINED SPOTTER DAILY TOTAL - 0.90 IN PAST HOUR 0720 PM TSTM WND DMG ASBURY 42.51N 90.76W 05/17/2017 DUBUQUE IA TRAINED SPOTTER TREE SPLIT IN HALF AT CORNER OF SUN VALLEY DR AND SPRING GREEN ST. ALSO SEVERAL BRANCHES DOWN. 0720 PM TSTM WND GST ASBURY 42.51N 90.76W 05/17/2017 M60.00 MPH DUBUQUE IA TRAINED SPOTTER 0734 PM HAIL FRUITLAND 41.35N 91.13W 05/17/2017 M1.00 INCH MUSCATINE IA PUBLIC PICTURE FROM TWITTER, TIME ESTIMATED. 0734 PM HEAVY RAIN MARENGO 41.80N 92.07W 05/17/2017 E1.10 INCH IOWA IA TRAINED SPOTTER WATER STANDING IN THE STREETS 0740 PM HAIL SSE GRANDVIEW 41.28N 91.19W 05/17/2017 E1.75 INCH LOUISA IA TRAINED SPOTTER 0744 PM TORNADO 3 WNW DONAHUE 41.70N 90.72W 05/17/2017 F0 SCOTT IA NWS STORM SURVEY A SQUALL LINE TORNADO CAUSED SPORADIC EF-0 DAMAGE ALONG ITS TWO MILE PATH. NUMEROUS TREES WERE DAMAGED WITH A FEW ROTTEN TREES SNAPPED. ROOFING DAMAGE TO A NEW HOME AND GARAGE WERE NOTED AT THE BEGINNING OF THE PATH. THE PEAK ESTIMATED WIND SPEED WAS 80 MPH ALONG A 2.14 MILE PATH THAT WAS 25 YARDS WIDE. THE TORNADO WAS ON THE GROUND FROM 744 TO 746 PM CDT. 0750 PM HAIL 1 N WALCOTT 41.61N 90.78W 05/17/2017 E0.50 INCH SCOTT IA TRAINED SPOTTER PEA TO DIMES AT I-80 TRUCK STOP. 0754 PM TSTM WND GST WELTON 41.91N 90.60W 05/17/2017 M73.00 MPH CLINTON IA TRAINED SPOTTER WINDS SUSTAINED 50-60 MPH FOR 5 MINUTES 0754 PM HAIL 1 N WALCOTT 41.61N 90.78W 05/17/2017 M1.00 INCH SCOTT IA TRAINED SPOTTER AT I-80 TRUCK STOP. 0759 PM TSTM WND GST DONAHUE 41.69N 90.68W 05/17/2017 M60.00 MPH SCOTT IA TRAINED SPOTTER VERY HEAVY RAIN FALLING. 0800 PM TORNADO 3 SE SHERRARD 41.29N 90.46W 05/17/2017 MERCER IL NWS STORM SURVEY PATH LENGTH 8 MILES...PATH WIDTH 150 YARDS. EF-1 RATING 0803 PM TSTM WND GST DEWITT 41.82N 90.55W 05/17/2017 E59.00 MPH CLINTON IA MESONET RWIS SITE NEAR US 30/HWY 61 0807 PM FUNNEL CLOUD SWEDONA 41.28N 90.45W 05/17/2017 MERCER IL PUBLIC PICTURE FROM TWITTER, TIME ESIMATED. 0810 PM TSTM WND GST PRESTON 42.05N 90.40W 05/17/2017 E60.00 MPH JACKSON IA TRAINED SPOTTER 50 TO 60 MPH SUSTAINED 0822 PM HAIL 1 NNW MORRISTOWN 41.41N 90.31W 05/17/2017 E1.00 INCH HENRY IL TRAINED SPOTTER DIME TO QUARTERS. 0825 PM HAIL DAVENPORT MUNICIPAL AIR 41.62N 90.58W 05/17/2017 E0.50 INCH SCOTT IA NWS EMPLOYEE 0825 PM TSTM WND GST DAVENPORT MUNICIPAL AIR 41.62N 90.58W 05/17/2017 M55.00 MPH SCOTT IA ASOS 0830 PM HAIL 2 NW GENESEO 41.47N 90.18W 05/17/2017 M0.88 INCH HENRY IL COCORAHS 0833 PM TSTM WND GST WSW WARREN 42.49N 90.00W 05/17/2017 E60.00 MPH JO DAVIESS IL TRAINED SPOTTER WIND ESTIMATED 50-60 MPH 0835 PM HAIL GENESEO 41.45N 90.15W 05/17/2017 E0.50 INCH HENRY IL AMATEUR RADIO 0845 PM FUNNEL CLOUD 4 WNW ATKINSON 41.44N 90.09W 05/17/2017 HENRY IL PUBLIC UNCONFIRMED PUBLIC REPORT RELAYED TO LAW ENFORCEMENT. 0844 PM TORNADO NW HOOPPOLE 41.52N 89.91W 05/17/2017 HENRY IL NWS STORM SURVEY PATH LENGTH 2 MILES...PATH WIDTH 50 YARDS. EF-1 RATING. 0845 PM TSTM WND GST HOOPPOLE 41.52N 89.91W 05/17/2017 E40.00 MPH HENRY IL TRAINED SPOTTER LOTS OF LIGHTNING 0850 PM HAIL SE CLINTON 41.84N 90.23W 05/17/2017 E0.75 INCH CLINTON IA AMATEUR RADIO 0850 PM TSTM WND GST SE CLINTON 41.84N 90.23W 05/17/2017 E60.00 MPH CLINTON IA AMATEUR RADIO 50 TO 60 MPH WIND. 0920 PM TORNADO 2 WSW GALVA 41.15N 90.08W 05/17/2017 F2 HENRY IL NWS STORM SURVEY * 1 INJ * CORRECTED COUNTY REFERENCE FROM KNOX TO HENRY. AN EF-2 TORNADO WITH PEAK ESTIMATED WIND SPEEDS OF 120 MPH CAUSED DAMAGE THAT HAD A MAXIMUM WIDTH OF 50 YARDS AND A PATH LENGTH OF 1.29 MILES. DAMAGE WAS TO TWO SNAPPED POWER POLES, ONE HOME WITH SHINGLE DAMAGE AND ANOTHER WITH A ROOF COMPLETELY REMOVED AND DOORS BLOWN OUT. THE TORNADO TOUCHED DOWN ABOUT 2.0 MILES WEST SOUTHWEST OF GALVA AND LIFTED ABOUT 0.8 MILES WEST OF GALVA. ONE PERSON WAS INJURED. 0925 PM TSTM WND GST 1 E FREEPORT 42.29N 89.62W 05/17/2017 M60.00 MPH STEPHENSON IL TRAINED SPOTTER 0930 PM TSTM WND GST GALVA 41.17N 90.04W 05/17/2017 E50.00 MPH HENRY IL EMERGENCY MNGR WIND ESTIMATED 50-60 MPH 0932 PM NON-TSTM WND GST MILLEDGEVILLE 41.96N 89.78W 05/17/2017 E70.00 MPH CARROLL IL EMERGENCY MNGR 0938 PM TSTM WND GST 1 E FREEPORT 42.29N 89.62W 05/17/2017 M60.00 MPH STEPHENSON IL TRAINED SPOTTER 0941 PM TSTM WND DMG KEWANEE 41.24N 89.93W 05/17/2017 HENRY IL LAW ENFORCEMENT POWER LINE DOWN IN TOWN. 1015 PM TSTM WND DMG PRINCETON 41.38N 89.47W 05/17/2017 BUREAU IL EMERGENCY MNGR POWER LINES AND TREES DOWN FROM PRINCETON TO LA MOILLE ALONG ROUTE 34. TIME ESTIMATED FROM RADAR AND EMERGENCY MANAGER.

Rain Reports

24 hour precipitation reports (in Inches),
for eastern Iowa, northwest and west central Illinois,
and northeast Missouri. Reported between Midnight and 9 AM,
Thursday May 18, 2017.

....IOWA....
Tripoli                          1.62
Amana 4.7 W                      1.50
Marengo                          1.31
Muscatine 2N                     1.31
De Witt                          1.23
Cresco                           1.20
Muscatine 1.4 N                  1.20
Delmar 2.3 NW                    1.18
North English                    1.16
Quasqueton 0.4 WSW               1.11
Parnell 0.1 SSW                  1.10
Davenport Arpt                   1.09
Waterloo ASOS                    1.07
De Witt 4S                       1.06
Calamus 2.0 NE                   1.04
Solon 0.3 ESE                    1.04
Cascade                          1.04
Davenport 3.8 NNW                1.01
Williamsburg                     1.01
Bellevue LD12                    1.00
Marshalltown                     0.99
Anamosa 3 SSW                    0.95
Cedar Rapids Arpt                0.84
Washington                       0.81
Monticello                       0.80
Central City 6.7 W               0.79
Strawberry Point                 0.76
Rathbun Reservoir                0.74
Marshalltown ASOS                0.72
Cedar Rapids 2.2 WSW             0.72
Park View 0.2 WSW                0.70
Cedar Rapids 3.4 NW              0.70
Kalona 7.3 NNW                   0.68
Mason City                       0.67
Peosta 2.9 E                     0.65
Vinton                           0.65
Maquoketa 4W                     0.64
Iowa City Arpt                   0.64
Camanche 1.2 W                   0.64
Robins 0.4 SSE                   0.63
Albia                            0.62
Marion 1.2 NE                    0.60
Coggon                           0.59
Lowden                           0.57
Beaconsfield                     0.56
Eldridge 0.7 SSW                 0.55
Dubuque Arpt                     0.54
Dubuque #3                       0.53
Dubuque LD11                     0.53
Keosauqua                        0.53
Cedar Rapids 2.7 NE              0.53
Marion 1.7 NNW                   0.52
Mason City ASOS                  0.52
Fayette                          0.47
Centerville                      0.45
NWS Johnston*                    0.45
Oskaloosa AWOS                   0.43
Oskaloosa                        0.43
Belle Plaine                     0.43
Burlington Arpt                  0.39
Ottumwa ASOS                     0.38
Ainsworth 7.4 N                  0.37
Manchester                       0.36
Grinnell                         0.33
Salem 3.1 ESE                    0.32
Ames US 30                       0.31
Bloomfield                       0.31
Gilman                           0.30
Perry                            0.28
Hampton                          0.28
Toledo                           0.24
Guttenberg Dam 10                0.23
Grinnell AWOS                    0.22
Pella                            0.20
Mount Auburn 2.2 NNW             0.20
Salem 1S                         0.19
Fairfield                        0.18
Boone                            0.16
Sigourney                        0.15
Davenport 0.9 WNW                0.11
Burlington 6.5 SSW               0.11
Davenport 0.9 SSW                0.10
Le Claire LD14                   0.10
Keokuk 0.6 NE                    0.03
Bettendorf 2.2 SE                0.02
New London 1.5 SW                0.00
West Point 7.5 NW                0.00
Pella AWOS                       0.00
Donnellson                       0.00
Keokuk LD19                      0.00
....ILLINOIS....
Mendota                          1.22
Orangeville 2.8 NW               1.05
Winslow 4.3 ESE                  1.01
Elizabeth                        0.93
Princeton 1.5 S                  0.91
Ridott 0.1 NE                    0.89
Rockford ASOS                    0.83
Pearl City 0.4 SW                0.82
Princeton 1.1 SE                 0.80
Princeton                        0.80
Kewanee                          0.75
Ill. City LD16                   0.72
Fulton 0.8 SSW                   0.70
Galena                           0.64
Gladstone LD18                   0.63
Freeport                         0.56
Paw Paw                          0.56
Davis 0.5 N                      0.54
Rock Falls                       0.53
Morrison 3.2 E                   0.53
Romeoville                       0.51
Coleta 1.4 SSW                   0.51
Freeport 2.0 NW                  0.49
Shannon 0.2 S                    0.46
Geneseo 2.0 NW                   0.46
Freeport 1.7 ESE                 0.40
Chadwick 2.7 WSW                 0.40
Roscoe 2SE                       0.38
Coal Valley 1.9 SE               0.36
Aledo                            0.33
Aledo 0.4 NE                     0.31
Galesburg Arpt                   0.27
Joliet                           0.19
Rochelle                         0.14
New Windsor 2.0 N                0.12
Moline 0.7 NNE                   0.09
Mundelein                        0.08
Atkinson 2.6 NNE                 0.08
Moline 0.9 N                     0.06
Steward                          0.06
Moline 1.0 WNW                   0.06
Milan 8.8 SSW                    0.05
Quad City Arpt                   0.04
Augusta                          0.02
Quincy ASOS                      0.01
Ottawa                           0.00
La Harpe                         0.00
Dallas City 3.0 SSE              0.00
Bloomington Airport              0.00
Peoria ASOS                      0.00
Lincoln NWS                      0.00
Decatur Airport                  0.00
Bentley                          0.00
Rochelle AWOS                    0.00
Jacksonville AWOS                0.00
Colchester 3.5 NE                0.00
Macomb                           0.00
Warsaw 5.8 SE                    0.00
....MISSOURI....
Memphis                          0.25
Chillicothe                      0.06
Kirksville ASOS                  0.01
Columbia                         0.00
....WISCONSIN....
Whitewater                       1.02
Monroe                           1.01
Sullivan-NWS                     0.96
La Crosse WFO                    0.94
Viroqua                          0.94
South Wayne-4 SW                 0.71
Darlington                       0.65
Beloit-College                   0.60
Allenton-WWTP                    0.56
Brodhead                         0.54
Watertown-AWOS                   0.51
Steuben 4SE                      0.50
Darlington-2 NE                  0.50
Madison-ASOS                     0.45
Lancaster 4WSW                   0.31
Prairie du Chien AWOS            0.19
....MINNESOTA....
Grand Meadow                     1.87
Theilman 1SSW                    1.03
Preston                          0.75
Byron 4N                         0.75

Environment


Figure 1: SPC Categorical Outlook	Figure 2: SPC Tornado Outlook	Figure 3: SPC Hail Outlook	Figure 4: SPC Wind Outlook

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May 17, 2017: Damage Surveys & Event Review

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