457
NWUS53 KLOT 180921
LSRLOT
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO IL
421 AM CDT SAT APR 18 2026
.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON
.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.
..REMARKS..
0438 PM HAIL 2 NNW PECATONICA 42.34N 89.37W
04/17/2026 E2.00 INCH WINNEBAGO IL PUBLIC
PHOTO SHOWS HAIL ESTIMATED AS APPROXIMATELY
2 INCHES IN DIAMETER NEAR PECATONICA.
LOCATION ESTIMATED, RELAYED BY BROADCAST
MEDIA. TIME ESTIMATED BY RADAR.
0440 PM TORNADO 3 N PECATONICA 42.35N 89.36W
04/17/2026 WINNEBAGO IL PUBLIC
VIDEO SHOWS POSSIBLE BRIEF TORNADO NORTH OF
PECATONICA. NO KNOWN DAMAGE. RELAYED VIA
SOCIAL MEDIA.
0441 PM HAIL 2 SW DURAND 42.42N 89.36W
04/17/2026 M1.25 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: HALF DOLLAR (1.25 IN.).
0441 PM HAIL 2 NE LAKE SUMMERSET 42.48N 89.38W
04/17/2026 M2.25 INCH WINNEBAGO IL PUBLIC
TIME ESTIMATED BY RADAR. RELAYED VIA MPING.
0443 PM HAIL 1 S DURAND 42.42N 89.33W
04/17/2026 E1.75 INCH WINNEBAGO IL PUBLIC
HAIL OF AT LEAST GOLF BALL SIZE ONGOING ON
SOUTH SIDE OF DURAND.
0444 PM HAIL 1 SE DURAND 42.42N 89.32W
04/17/2026 E2.25 INCH WINNEBAGO IL PUBLIC
HEN EGG SIZE HAIL SOUTH OF DURAND. RELAYED
VIA MPING.
0448 PM HAIL 4 NE DURAND 42.48N 89.28W
04/17/2026 E1.75 INCH WINNEBAGO IL PUBLIC
RELAYED VIA MPING. TIME ESTIMATED BY RADAR.
0459 PM TORNADO 3 SSE SHIRLAND 42.41N 89.18W
04/17/2026 WINNEBAGO IL TRAINED SPOTTER
TRAINED SPOTTER REPORTS TORNADO ON THE
GROUND JUST SOUTHEAST OF HARRISON.
0502 PM TSTM WND DMG 3 SSE SHIRLAND 42.40N 89.16W
04/17/2026 WINNEBAGO IL TRAINED SPOTTER
TRAINED SPOTTER REPORTS DAMAGE TO A
STRUCTURE NEAR BATES ROAD AND FAVOR ROAD
SOUTHEAST OF HARRISON. POSSIBLE TORNADO.
TIME ESTIMATED BY RADAR.
0504 PM TORNADO 3 ESE SHIRLAND 42.42N 89.14W
04/17/2026 WINNEBAGO IL STORM CHASER
MULTIPLE PHOTOS AND VIDEOS SHARED VIA SOCIAL
MEDIA SHOW TORNADO ON THE GROUND BETWEEN
HARRISON AND ROCKTON.
0506 PM HAIL 3 W ROCKTON 42.46N 89.12W
04/17/2026 M1.00 INCH WINNEBAGO IL PUBLIC
RELAYED VIA MPING.
0509 PM TSTM WND DMG 3 SW ROCKTON 42.43N 89.12W
04/17/2026 WINNEBAGO IL STORM CHASER
DAMAGE TO TREES AND A STRUCTURE OBSERVED
ALONG OWEN CENTER ROAD SOUTHWEST OF ROCKTON.
POSSIBLE TORNADO. TIME ESTIMATED BY RADAR.
0510 PM HAIL SOUTH BELOIT 42.49N 89.04W
04/17/2026 E0.50 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: HALF-INCH (0.50 IN.).
0514 PM HAIL SOUTH BELOIT 42.49N 89.04W
04/17/2026 M1.50 INCH WINNEBAGO IL PUBLIC
RELAYED VIA MPING. TIME ESTIMATED BY RADAR.
0515 PM HAIL 3 E SOUTH BELOIT 42.49N 88.99W
04/17/2026 E0.75 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: DIME (0.75 IN.).
0516 PM HAIL SOUTH BELOIT 42.49N 89.04W
04/17/2026 E1.25 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: HALF DOLLAR (1.25 IN.).
0520 PM HAIL SOUTH BELOIT 42.49N 89.04W
04/17/2026 E1.50 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: PING PONG BALL (1.50
IN.).
0709 PM TSTM WND DMG 2 W ROSCOE 42.41N 89.05W
04/17/2026 WINNEBAGO IL PUBLIC
MULTIPLE STRUCTURES WITH ROOF DAMAGE NEAR
ROSCOE ROAD AND LEENA DRIVE IN ROSCOE.
POSSIBLE TORNADO. TIME ESTIMATED BY RADAR.
0713 PM TSTM WND DMG ROSCOE 42.41N 89.01W
04/17/2026 WINNEBAGO IL AMATEUR RADIO
SEVERAL LARGE TREES DAMAGED SOUTH WEST OF
BELVIDERE ROAD AND MAIN STREET IN ROSCOE.
RELAYED BY AMATEUR RADIO. TIME ESTIMATED BY
RADAR. POSSIBLE TORNADO.
0713 PM TSTM WND DMG 1 S ROSCOE 42.40N 89.01W
04/17/2026 WINNEBAGO IL PUBLIC
PHOTO SHOWS MULTIPLE LARGE BRANCHES BROKEN
AND BLOCKING A ROADWAY NEAR MCDONALD ROAD
AND DOUBLE DITCH CIRCLE IN ROSCOE. RELAYED
BY SOCIAL MEDIA. POSSIBLE TORNADO. TIME
ESTIMATED BY RADAR.
0715 PM TORNADO 2 ESE ROSCOE 42.40N 88.98W
04/17/2026 WINNEBAGO IL AMATEUR RADIO
TORNADO ON THE GROUND VISIBLE FROM IL-173
AND BELVIDERE ROAD LOOKING NORTH. RELAYED BY
AMATEUR RADIO.
0733 PM FUNNEL CLOUD 1 E CAPRON 42.40N 88.72W
04/17/2026 BOONE IL EMERGENCY MNGR
MCHENRY COUNTY EM REPORTS FUNNEL CLOUD NEAR
CAPRON.
0749 PM TSTM WND GST 4 WSW HEBRON 42.46N 88.52W
04/17/2026 M63 MPH MCHENRY IL AMATEUR RADIO
63 MPH GUST NEAR ALDEN ROAD AND IL-173.
RELAYED VIA AMATEUR RADIO. TIME ESTIMATED BY
RADAR.
0754 PM TSTM WND GST ROCKFORD AIRPORT 42.20N 89.10W
04/17/2026 M62 MPH WINNEBAGO IL ASOS
ROCKFORD ASOS KRFD GUSTED 62 MPH.
0809 PM TSTM WND GST 4 S GARDEN PRAIRIE 42.20N 88.73W
04/17/2026 M61 MPH BOONE IL PUBLIC
PRIVATE WEATHER STATION KILGARDE2 RECORDED
61 MPH GUST.
0810 PM TSTM WND GST 5 ENE HERBERT 42.18N 88.69W
04/17/2026 M76 MPH MCHENRY IL DEPT OF HIGHWAYS
IL DOT STATION ON HARMONY ROAD WEST OF RILEY
RECORDED 76 MPH WIND GUST.
0814 PM RAIN 2 SW TIMBERLANE 42.32N 88.89W
04/17/2026 M1.81 INCH BOONE IL PUBLIC
PRIVATE WEATHER STATION KILILLIN2 RECORDED
1.81 INCHES SINCE 7 PM.
0814 PM RAIN 2 SSW LOVES PARK 42.29N 89.07W
04/17/2026 M2.31 INCH WINNEBAGO IL PUBLIC
PRIVATE WEATHER STATION KILROCKF241 RECORDED
2.31 INCHES OF RAIN SINCE 7 PM.
0818 PM TSTM WND DMG 5 WNW TROY GROVE 41.49N 89.17W
04/17/2026 LA SALLE IL EMERGENCY MNGR
A POLE BARN WAS SEVERELY DAMAGED SOUTHWEST
OF MENDOTA WITH LARGE PORTIONS OF SIDING
REMOVED AND PARTIAL STRUCTURAL COLLAPSE.
TIME ESTIMATED USING RADAR.
0825 PM TSTM WND DMG 3 E MENDOTA 41.55N 89.06W
04/17/2026 LA SALLE IL NWS EMPLOYEE
SEVERAL SEMI TRUCKS WERE OVERTURNED ON I-39
EAST OF MENDOTA. TIME ESTIMATED USING RADAR.
0830 PM FLOOD 5 WSW HEBRON 42.46N 88.53W
04/17/2026 MCHENRY IL EMERGENCY MNGR
STANDING WATER ON IL-173 NEAR OAK GROVE ROAD
NEAR ALDEN.
0851 PM TSTM WND DMG 2 NW SANDWICH 41.67N 88.66W
04/17/2026 DE KALB IL TRAINED SPOTTER
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2
NW SANDWICH. REPORT OF A TWO FOOT DIAMETER
TREE TRUNK DOWN AND BLOCKING THE SOUTHBOUND
LANE OF SOMONAUK RD JUST NORTH OF PRATT RD
IN SANDWICH. TIME ESTIMATED BY RADAR.
0913 PM TSTM WND GST 4 NW CORNELL 41.03N 88.79W
04/17/2026 M50 MPH LIVINGSTON IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 50 MPH
GUST SOUTH OF STREATOR.
0913 PM TSTM WND GST 4 NW CORNELL 41.03N 88.79W
04/17/2026 M50 MPH LIVINGSTON IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 50 MPH
GUST SOUTH OF STREATOR.
0916 PM TSTM WND DMG 1 N BATAVIA 41.86N 88.31W
04/17/2026 KANE IL EMERGENCY MNGR
TOP HALF OF A TREE DOWN IN THE ROAD AT IL
RT. 31 AND FABIAN PKWY IN BATAVIA. TIME
ESTIMATED BY RADAR.
0916 PM TSTM WND DMG 1 E GENEVA 41.89N 88.28W
04/17/2026 KANE IL EMERGENCY MNGR
POWER LINES REPORTED DOWN CAUSING TREES TO
CATCH FIRE AT KIRK RD AND IL-38 IN GENEVA.
TIME ESTIMATED BY RADAR.
0917 PM TSTM WND GST 2 SSW MARSEILLES 41.30N 88.73W
04/17/2026 M66 MPH LA SALLE IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 66 MPH
GUST SOUTH OF MARSEILLES.
0920 PM FLOOD 2 S HARVARD 42.39N 88.62W
04/17/2026 MCHENRY IL TRAINED SPOTTER
REPORT OF MULTIPLE LOCATIONS WITH AROUND SIX
INCHES OF FLOWING WATER ACROSS IL-23 SOUTH
OF HARVARD.
0930 PM TSTM WND DMG GIBSON CITY 40.47N 88.38W
04/17/2026 FORD IL BROADCAST MEDIA
STRUCTURE DAMAGE WAS REPORTED AROUND PARTS
OF GIBSON CITY, INCLUDING ONE BUSINESS WHICH
HAD LARGE PORTIONS OF METAL SIDING RIPPED
OFF. TREE DAMAGE WAS ALSO REPORTED IN TOWN.
TIME ESTIMATED USING RADAR.
0940 PM FLOOD FOX LAKE 42.39N 88.18W
04/17/2026 LAKE IL EMERGENCY MNGR
LAKE COUNTY EMA REPORTED FLOODING ON ROLLINS
RD IN FOX LAKE.
0940 PM FLOOD 2 ENE GREEN OAKS 42.31N 87.88W
04/17/2026 LAKE IL EMERGENCY MNGR
LAKE COUNTY EMA REPORTED FLOODING AT US-41
AND BUCKLEY RD IN NORTH CHICAGO.
0940 PM FLOOD 1 SE THIRD LAKE 42.36N 88.00W
04/17/2026 LAKE IL EMERGENCY MNGR
LAKE COUNTY EMA REPORTED FLOODING AT US-45
AND WASHINGTON ST IN THIRD LAKE.
0942 PM TSTM WND GST 3 S BARTLETT 41.95N 88.17W
04/17/2026 M55 MPH DUPAGE IL PUBLIC
0949 PM TSTM WND DMG LODA 40.52N 88.07W
04/17/2026 IROQUOIS IL EMERGENCY MNGR
GRAIN BINS WERE DESTROYED IN LODA. EXACT
LOCATION UNKNOWN. TIME ESTIMATED USING
RADAR.
0949 PM TSTM WND DMG 1 NNW PAXTON 40.47N 88.10W
04/17/2026 FORD IL EMERGENCY MNGR
REPORT OF AN EIGHT INCH DIAMETER TREE BRANCH
BROKEN OFF OF A TREE NEAR THE INTERSECTION
OF OAK ST AND AMERICAN ST IN PAXTON. TIME
ESTIMATED BY RADAR.
0950 PM TSTM WND GST 2 S BUCKINGHAM 41.02N 88.17W
04/17/2026 M65 MPH KANKAKEE IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 65 MPH
GUST SOUTH OF BUCKINGHAM.
0951 PM TSTM WND DMG 1 WSW BUCKLEY 40.59N 88.06W
04/17/2026 IROQUOIS IL EMERGENCY MNGR
REPORT OF SEMI TRUCKS BLOWN OVER ON I-57
NEAR MILE MARKER 270 SOUTHWEST OF BUCKLEY.
TIME ESTIMATED USING RADAR.
1006 PM TSTM WND GST 4 SW CRESCENT CITY 40.73N 87.91W
04/17/2026 M61 MPH IROQUOIS IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 61 MPH
GUST WEST OF WATSEKA.
1008 PM TSTM WND GST 1 W NORTHERLY ISLAND 41.86N 87.62W
04/17/2026 M62 MPH COOK IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 62 MPH
GUST IN THE SOUTH LOOPS COMMUNITY AREA OF
CHICAGO.
1008 PM TSTM WND GST INDIAN HEAD PARK 41.77N 87.90W
04/17/2026 M65 MPH COOK IL PUBLIC
1009 PM TSTM WND DMG MANTENO 41.25N 87.84W
04/17/2026 KANKAKEE IL EMERGENCY MNGR
REPORTS OF TREE DAMAGE IN THE MANTENO AREA.
TIME ESTIMATED USING RADAR.
1010 PM TSTM WND GST WATSEKA 40.77N 87.73W
04/17/2026 M73 MPH IROQUOIS IL EMERGENCY MNGR
EMERGENCY MANAGER RECORDED A 73 MPH WIND
GUST IN WATSEKA. TIME ESTIMATED USING RADAR.
1011 PM TSTM WND DMG WATSEKA 40.77N 87.73W
04/17/2026 IROQUOIS IL EMERGENCY MNGR
EMERGENCY MANAGER REPORTED EXTENSIVE TREE
DAMAGE IN WATSEKA, PARTICULARLY AROUND THE
SOUTHEAST SIDE OF TOWN. NUMEROUS UPROOTED
TREES AND SNAPPED TREE TRUNKS WERE NOTED.
TIME ESTIMATED USING RADAR.
1012 PM TSTM WND GST 3 NE NAVY PIER 41.92N 87.57W
04/17/2026 M64 MPH LMZ741 IL C-MAN STATION
THE HARRISON-DEVER CRIB RECORDED A 56 KT
WIND GUST.
1015 PM TSTM WND GST 2 SW PAPINEAU 40.95N 87.75W
04/17/2026 M62 MPH IROQUOIS IL PUBLIC
MEASURED AT AN AMBIENT PWS.
1015 PM TSTM WND GST 1 ESE WATSEKA 40.77N 87.71W
04/17/2026 M72 MPH IROQUOIS IL PUBLIC
MEASURED AT PWS WATSE19.
1025 PM TSTM WND DMG 3 NW KENTLAND 40.81N 87.49W
04/17/2026 NEWTON IN FIRE DEPT/RESCUE
NEWTON COUNTY EMS REPORTED NUMEROUS POWER
POLES DOWN SOUTH OF CR 1300S FROM THE IL-IN
STATE LINE EAST TO US-41 NORTHWEST OF
KENTLAND. TIME ESTIMATED USING RADAR.
1030 PM TSTM WND GST 5 SSW EARL PARK 40.62N 87.46W
04/17/2026 M54 MPH BENTON IN EMERGENCY MNGR
BENTON COUNTY EM RECORDED A 54 MPH WIND GUST
AT IN RT. 18 AND CR 700 W WEST OF FOWLER.
1031 PM TSTM WND GST 4 WNW CEDAR LAKE 41.39N 87.52W
04/17/2026 M68 MPH LAKE IN PUBLIC
MEASURED AT AN AMBIENT PWS.
1031 PM TSTM WND GST 6 E GOODENOW 41.39N 87.53W
04/17/2026 M68 MPH WILL IL PUBLIC
A PERSONAL WEATHER STATION RECORDED A 68 MPH
GUST SOUTH OF DYER JUST WEST OF THE IL-IN
STATE LINE.
1045 PM TSTM WND DMG 2 WNW KENTLAND 40.78N 87.49W
04/17/2026 NEWTON IN EMERGENCY MNGR
NUMEROUS POWERLINES AND POLES WERE REPORTED
DOWN SOUTH OF 1300 SOUTH FROM US 41 TO STATE
LINE ROAD.
1100 PM FLOOD 1 SSE BUFFALO GROVE 42.15N 87.96W
04/17/2026 COOK IL OTHER FEDERAL
THE GAUGE ON BUFFALO CREEK AT WHEELING
QUICKLY ROSE INTO MINOR FLOOD STAGE DUE TO
HEAVY RAIN.
1107 PM TSTM WND GST 4 NNE TEFT 41.25N 86.95W
04/17/2026 M58 MPH PORTER IN PUBLIC
MEASURED AT AN AMBIENT PWS.
1118 PM MARINE TSTM WIND 3 NE BEVERLY SHORES 41.72N 86.94W
04/17/2026 M47 MPH LMZ745 IN C-MAN STATION
MEASURED AT MCYI3.
1125 PM FLOOD 2 NNE NORTHBROOK 42.15N 87.82W
04/17/2026 COOK IL OTHER FEDERAL
THE GAUGE ON THE NORTH BRANCH OF THE CHICAGO
RIVER AT DEERFIELD QUICKLY ROSE INTO MINOR
FLOOD STAGE DUE TO HEAVY RAIN.
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