A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >
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Fast Facts
Tornadoes
Full Public Information Statement
Tornado #1: Oak Brook, IL EF-0 (DuPage County)
Summary: Based on a tornadic debris signature in KLOT radar imagery, a compact velocity circulation detected by FAA terminal Doppler radars TMDW and TORD, spotter reports and pictures, and information from fire department officials, a brief EF-0 tornado with peak winds of 75 mph, path length of approximately 1.9 miles, and maximum width of 60 yards touched down near the Hilton Hotel and Willow Crest Golf Club and ended in Central Park in Oak Brook. Damage along the path was characterized by snapped tree branches and a few uprooted trees, as well as partial roof loss to an outbuilding. The tornado was on the ground for approximately three minutes.
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| Snapped softwood tree near the Hilton Hotel and Golf Course in Oak Brook (courtesy of Patrick Skach) | Damaged outbuilding near the Hilton Hotel and Golf Course in Oak Brook (courtesy of Patrick Skach) | Snapped tree and damaged light pole near Central Park in Oak Brook (courtesy of Tony Fraveletti) |
Tornado #2: Timberlane, IL EF-0 (Boone County)
Summary: Based on information collected by emergency management officials, a brief EF-0 tornado with peak winds of 80 mph, path length of approximately one half of a mile, and maximum width of 60 yards touched down near the intersection of Briar Cliff Street SW and lifted over Candlewick Lake. Several softwood trees were uprooted and snapped at the start of the tornado path and laid in a convergent pattern. In addition, several floating docks were thrown across Candlewick Lake. The tornado was on the ground for approximately one minute.
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| Tree damage by Candlewick Lake (courtesy of Sara Oberheim) | Damage by Candlewick Lake (courtesy of Carson Fleury) | Uprooted tree by Candlewick Lake (courtesy of Carson Fleury) |
Tornado #3: Capron, IL EF-U (Boone County)
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Summary: Based on two photos shared to the National Weather Service from the public, a brief tornado occurred in an open field near the intersection of Coon Trail and Capron roads just south of the Wisconsin state line. No known damage was caused by the tornado, so it was assigned a rating of EF-U. The time is based on radar.
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| Photo of tornado relayed from A.J. Waterman and NWS Milwaukee | Photo of funnel cloud relayed via Matt Wittum |
Wind Damage: Rockford, IL (Winnebago County)
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Summary: Based on a review of drone footage provided by the Rockford Fire Department and radar data from both the Chicago and Milwaukee NWS radars, it was determined that a narrow swath of straight line winds of 70 to 80 mph occurred near the intersection of 9th and Broadway streets southeast of downtown Rockford. These winds caused the loss of a metal roof to a building south of Broadway Street which resulted in the collapse of the west and south-facing walls. Roofing material from the building was blown in a north and northeasterly direction. Several power poles and trees were snapped along 9th Street along with additional roof damage in the vicinity.
Although the NWS received several reports, pictures, and videos of apparent funnel clouds prior to the storm moving over Rockford, the damage orientation was consistent with a divergent area of southerly straight line winds. The NWS thanks the Rockford Fire Department for their assistance in the damage assessment.
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| Damage analysis and fall patterns determined by the NWS based on drone footage provided by the Rockford Fire Department |
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 |
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When a tornado is known to have occurred but does not cause damage to any qualified damage indicators, or if the only damage is located in an area that is inaccessible to NWS storm survey personnel, then a tornado may be assigned the EF-Unknown (EF-U) rating.
Storm Reports
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| April 30th Storm Reports | April 29th Storm Reports |
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO IL
646 AM CDT MON MAY 2 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0403 PM HAIL MAZON 41.24N 88.42W
04/30/2022 E1.00 INCH GRUNDY IL PUBLIC
SHARED VIA SOCIAL MEDIA. TIME ESTIMATED FROM
RADAR.
0420 PM TSTM WND DMG 2 NW PLAINFIELD 41.64N 88.23W
04/30/2022 WILL IL NWS EMPLOYEE
NWS EMPLOYEE REPORTS SIDING DAMAGE ON A
HOUSE NEAR 135TH AND MEADOW LANE AND SEVERAL
TREE LIMBS DOWN THAT ARE APPROXIMATELY 6
INCHES IN DIAMETER. TIME ESTIMATED FROM
RADAR.
0423 PM TSTM WND GST 2 NW PLAINFIELD 41.64N 88.23W
04/30/2022 M65 MPH WILL IL PUBLIC
REPORT THAT A HOME WEATHER STATION RECORDED
A 65 MPH WIND GUST. PICTURES ALSO RELAYED OF
AN IRRIGATION SYSTEM BLOWN INTO A FENCE.
0423 PM TSTM WND GST 3 NNW PLAINFIELD 41.65N 88.22W
04/30/2022 E65 MPH WILL IL TRAINED SPOTTER
RECORDED WITH HANDHELD ANEMOMETER.
0444 PM TORNADO 2 SW OAK BROOK 41.82N 87.98W
04/30/2022 DUPAGE IL NWS STORM SURVEY
BASED ON A TORNADIC DEBRIS SIGNATURE SEEN
FROM KLOT RADAR DATA, A COMPACT VELOCITY
CIRCULATION DETECTED BY FAA TERMINAL DOPPLER
RADARS TMDW AND TORD, SPOTTER REPORTS AND
PICTURES, AND FIRE DEPARTMENT OFFICIALS, A
BRIEF EF-0 TORNADO WITH PEAK WINDS OF 75
MPH, PATH LENGTH OF APPROXIMATELY 1.9 MILES,
AND MAXIMUM WIDTH OF 60 YARDS TOUCHED DOWN
NEAR THE HILTON HOTEL AND WILLOW CREST GOLF
CLUB AND ENDED IN CENTRAL PARK IN OAK BROOK.
DAMAGE ALONG THE PATH WAS CHARACTERIZED BY
SNAPPED TREE BRANCHES AND A FEW UPROOTED
TREES, AS WELL AS PARTIAL ROOF LOSS TO AN
OUTBUILDING. THE TORNADO WAS ON THE GROUND
FOR APPROXIMATELY THREE MINUTES.
0500 PM MARINE TSTM WIND 3 NE NAVY PIER 41.92N 87.57W
04/30/2022 M39 MPH LMZ741 IL MESONET
MESONET STATION CHII2 HARRISON-DEVER CRIB.
0500 PM MARINE TSTM WIND 2 ESE WAUKEGAN 42.35N 87.81W
04/30/2022 M36 MPH LMZ740 IL MESONET
MESONET STATION WHRI2 WAUKEGAN HARBOR.
0502 PM HAIL DARIEN 41.75N 87.97W
04/30/2022 E0.70 INCH DUPAGE IL TRAINED SPOTTER
DIME SIZE HAIL REPORTED AT THE INTERSECTION
OF PLAINFIELD RD AND CASS AVE.
0512 PM HAIL 1 W ROCKFORD AIRPORT 42.20N 89.12W
04/30/2022 E1.00 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: QUARTER (1.00 IN.).
0515 PM TSTM WND DMG NORTH RIVERSIDE 41.85N 87.83W
04/30/2022 COOK IL PUBLIC
PHOTO RECEIVED OF A LARGE TREE UPROOTED.
0517 PM HAIL 1 S ROCKFORD AIRPORT 42.19N 89.10W
04/30/2022 E1.50 INCH WINNEBAGO IL PUBLIC
REPORT FROM MPING: PING PONG BALL (1.50
IN.).
0525 PM HAIL 3 W CHERRY VALLEY 42.24N 89.03W
04/30/2022 NAN INCH WINNEBAGO IL TRAINED SPOTTER
REPORT OF PEA SIZE HAIL NEAR ALPINE RD AND
HARRISON AVE.
0526 PM TSTM WND GST 2 SSE ROCKFORD 42.25N 89.08W
04/30/2022 E80 MPH WINNEBAGO IL NWS STORM SURVEY
BASED ON REVIEW OF DRONE FOOTAGE PROVIDED BY
THE ROCKFORD FIRE DEPARTMENT AND RADAR DATA
FROM BOTH THE CHICAGO AND MILWAUKEE NWS
RADARS, IT WAS DETERMINED THAT A NARROW SWATH
OF STRAIGHT LINE WINDS OF 70 TO 80 MPH
OCCURRED NEAR THE INTERSECTION OF 9TH STREET
AND BROADWAY SOUTHEAST OF DOWNTOWN ROCKFORD.
THESE WINDS CAUSED THE LOSS OF A ROOF TO A
BUILDING SOUTH OF BROADWAY WHICH SUBSEQUENTLY
RESULTED IN THE COLLAPSE OF THE WEST AND
SOUTH-FACING WALLS. ROOFING MATERIAL FROM
THIS BUILDING WAS BLOWN IN A NORTH AND
NORTHEAST DIRECTION. SEVERAL POWER POLES AND
TREES WERE SNAPPED ALONG 9TH STREET, WITH
ADDITIONAL MINOR ROOF DAMAGE NOTED IN THE
VICINITY. THE DAMAGE ORIENTATION WAS
CONSISTENT WITH A DIVERGENT AREA OF
SOUTHERLY STRAIGHT LINE WINDS.THE NWS THANKS
THE ROCKFORD FIRE DEPARTMENT FOR THEIR HELP
IN THE DAMAGE SURVEY.
0530 PM HAIL 3 NW CHERRY VALLEY 42.27N 89.00W
04/30/2022 M0.70 INCH WINNEBAGO IL TRAINED SPOTTER
SPOTTER REPORTED DIME SIZED HAIL AT THE
CORNER OF STATE ST. AND MULFORD RD IN
ROCKFORD.
0531 PM HAIL 1 W DAVIS JUNCTION 42.10N 89.11W
04/30/2022 E1.00 INCH OGLE IL PUBLIC
REPORT FROM MPING: QUARTER (1.00 IN.).
0547 PM HAIL 1 WNW BELVIDERE 42.26N 88.86W
04/30/2022 E0.70 INCH BOONE IL TRAINED SPOTTER
DIME SIZED HAIL AND VERY WINDY.
0554 PM TORNADO 1 NNW TIMBERLANE 42.35N 88.87W
04/30/2022 BOONE IL NWS STORM SURVEY
BASED ON INFORMATION COLLECTED BY EMERGENCY
MANAGEMENT OFFICIALS, A BRIEF EF-0 TORNADO
WITH PEAK WINDS OF 80 MPH, PATH LENGTH OF
APPROXIMATELY ONE HALF OF A MILE, AND
MAXIMUM WIDTH OF 60 YARDS TOUCHED DOWN NEAR
THE INTERSECTION OF BRIAR CLIFF STREET SW
AND LIFTED OVER CANDLEWICK LAKE. SEVERAL
SOFTWOOD TREES WERE UPROOTED AND SNAPPED AT
THE START OF THE TORNADO PATH AND LAID IN A
CONVERGENT PATTERN. IN ADDITION, SEVERAL
FLOATING DOCKS WERE THROWN ACROSS CANDLEWICK
LAKE. THE TORNADO WAS ON THE GROUND FOR
APPROXIMATELY ONE MINUTE.
0556 PM HAIL 1 S GRAND RIDGE 41.22N 88.83W
04/30/2022 M0.88 INCH LA SALLE IL PUBLIC
SHARED VIA SOCIAL MEDIA. TIME ESTIMATED FROM
RADAR.
0600 PM HAIL 5 NNE FAIRDALE 42.17N 88.90W
04/30/2022 E1.50 INCH BOONE IL FIRE DEPT/RESCUE
QUARTER TO PING PONG BALL SIZED HAIL NEAR
IRENE, IL.
0607 PM TORNADO 5 N CAPRON 42.47N 88.74W
04/30/2022 BOONE IL NWS STORM SURVEY
BASED ON TWO PHOTOS FROM THE PUBLIC AND
RELAYED FROM NWS MILWAUKEE, A BRIEF TORNADO
OCCURRED IN AN OPEN FIELD NEAR THE
INTERSECTION OF COON TRAIL AND CAPRON ROADS
JUST SOUTH OF THE WISCONSIN AND ILLINOIS
STATE LINE. THERE IS NO KNOWN DAMAGE CAUSED
BY THE TORNADO. ACCORDINGLY, IT WILL BE
ASSIGNED A PRELIMINARY RATING OF EF-U. THE
TIME IS ESTIMATED BY RADAR.
0614 PM HAIL 1 NNW BELVIDERE 42.27N 88.85W
04/30/2022 E1.00 INCH BOONE IL PUBLIC
REPORT FROM MPING: QUARTER (1.00 IN.).
0725 PM HAIL CHATSWORTH 40.75N 88.29W
04/30/2022 M1.00 INCH LIVINGSTON IL CO-OP OBSERVER
HAIL RANGED FROM PEA TO QUARTER IN SIZE.
TIME ESTIMATED BY RADAR.
0733 PM HAIL PIPER CITY 40.76N 88.19W
04/30/2022 E1.00 INCH FORD IL PUBLIC
PHOTO SHARED ON SOCIAL MEDIA WITH LARGEST
HAILSTONES ROUGHLY NICKEL TO QUARTER SIZE.
TIME ESTIMATED FROM RADAR.
0745 PM FLOOD POPLAR GROVE 42.37N 88.82W
04/30/2022 BOONE IL TRAINED SPOTTER
SPOTTER REPORTS 2 TO 3 INCHES OF STANDING
WATER OVER IL-173 NEAR POLAR GROVE. TIME
ESTIMATED FROM RADAR.
0748 PM TSTM WND DMG WEST CHICAGO 41.88N 88.21W
04/30/2022 DUPAGE IL PUBLIC
REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN.
0812 PM MARINE TSTM WIND 1 NE MONTROSE HARBOR 41.97N 87.63W
04/30/2022 M45 MPH LMZ741 IL MESONET
MESONET STATION XMTB MONTROSE BEACH LIGHT.
Rainfall
PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 1148 AM CDT SUN MAY 1 2022 ...RAINFALL REPORTS FROM SATURDAY APRIL 30... OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING EQUIPMENT AND EXPOSURES. WE THANK ALL VOLUNTEER WEATHER OBSERVERS FOR THEIR DEDICATION. NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL. LOCATION AMOUNT TIME/DATE PROVIDER ---------------------------------------------------------------- ...ILLINOIS... ...BOONE COUNTY... CAPRON 1.28 IN 0700 AM 05/01 COCORAHS ROSCOE 0.88 IN 1020 AM 05/01 CWOP POPLAR GROVE 0.71 IN 1015 AM 05/01 CWOP TIMBERLANE 1 SW 0.42 IN 0700 AM 05/01 COCORAHS ...COOK COUNTY... EVANSTON 1.82 IN 1016 AM 05/01 CWOP GLENVIEW 1.3 WNW 1.81 IN 0700 AM 05/01 COCORAHS MORTON GROVE 1 WNW 1.59 IN 0700 AM 05/01 COCORAHS MOUNT PROSPECT 1 SSE 1.53 IN 0700 AM 05/01 COCORAHS HARWOOD HEIGHTS 1.45 IN 0700 AM 05/01 COCORAHS NORTHFIELD 1.42 IN 0800 AM 05/01 COCORAHS LA GRANGE PARK 1 SSW 1.40 IN 0700 AM 05/01 COCORAHS OAK FOREST 1 NNW 1.40 IN 0700 AM 05/01 COCORAHS EVANSTON 1 SSW 1.40 IN 0800 AM 05/01 COCORAHS EVANSTON 1.2 S 1.39 IN 0700 AM 05/01 COCORAHS GLENCOE 1.38 IN 0736 AM 05/01 COCORAHS OAK PARK 1 NNE 1.37 IN 0610 AM 05/01 COCORAHS OAK PARK 1.36 IN 1014 AM 05/01 CWOP EVANSTON 1 E 1.35 IN 0800 AM 05/01 COCORAHS ELK GROVE VILLAGE 1 ESE 1.34 IN 0700 AM 05/01 COCORAHS MIDLOTHIAN 1.34 IN 0700 AM 05/01 COCORAHS STREAMWOOD 1.34 IN 1016 AM 05/01 CWOP CHICAGO - WEST RIDGE 1.31 IN 0700 AM 05/01 COCORAHS 1 N NORRIDGE 1.29 IN 1015 AM 05/01 CWOP PARK RIDGE 1 WNW 1.27 IN 0700 AM 05/01 COCORAHS 1 WSW NORTH PARK - CHICAGO 1.24 IN 1025 AM 05/01 AWS CHICAGO OHARE 1.23 IN 1005 AM 05/01 ASOS NORTHBROOK 1.23 IN 1000 AM 05/01 CWOP GLENVIEW 1.16 IN 1016 AM 05/01 CWOP STREAMWOOD 1.1 WSW 1.15 IN 0700 AM 05/01 COCORAHS MERRIONETTE PARK 1.7 NE 1.14 IN 0800 AM 05/01 COCORAHS LA GRANGE 1.14 IN 1009 AM 05/01 CWOP ROSEMONT 1.12 IN 1015 AM 05/01 CWOP FRANKLIN PARK 0.5 SSE 1.10 IN 0800 AM 05/01 COCORAHS FRANKLIN PARK 1.07 IN 1005 AM 05/01 CWOP 1 W DES PLAINES 1.07 IN 1010 AM 05/01 AWS FRANKLIN PARK 1.06 IN 1015 AM 05/01 CWOP 1 W DES PLAINES 1.06 IN 1025 AM 05/01 AWS CHICAGO - HYDE PARK 1.04 IN 0600 AM 05/01 COCORAHS WILMETTE 1.04 IN 1025 AM 05/01 AWS MOUNT PROSPECT 0.2 NNE 1.03 IN 0645 AM 05/01 COCORAHS CHICAGO - ROGERS PARK 1.02 IN 0800 AM 05/01 COCORAHS CHICAGO - ALBANY PARK 0.98 IN 0700 AM 05/01 COCORAHS WILMETTE 0.96 IN 1009 AM 05/01 CWOP WINNETKA 0.96 IN 1017 AM 05/01 CWOP ARLINGTON HEIGHTS 1 W 0.94 IN 0700 AM 05/01 COCORAHS MORTON GROVE 0.91 IN 1025 AM 05/01 AWS ELK GROVE VILLAGE 2 WSW 0.89 IN 0635 AM 05/01 COCORAHS DES PLAINES 0.88 IN 1025 AM 05/01 AWS CHICAGO - ALBANY PARK 0.87 IN 0700 AM 05/01 COCORAHS ROLLING MEADOWS 0.87 IN 1017 AM 05/01 CWOP BARRINGTON 0.85 IN 0800 AM 05/01 COOP SCHAUMBURG 2 E 0.85 IN 0700 AM 05/01 COCORAHS HOFFMAN ESTATES 0.84 IN 1016 AM 05/01 CWOP 1 WSW NORTHBROOK 0.82 IN 1010 AM 05/01 URBANET DOUGLAS - CHICAGO 0.78 IN 0800 AM 05/01 COCORAHS WHEELING - CHICAGO EXEC. ARP 0.77 IN 0952 AM 05/01 ASOS PALOS PARK 2 WSW 0.77 IN 0600 AM 05/01 COCORAHS 2 ENE EVERGREEN PARK 0.74 IN 1025 AM 05/01 AWS LANSING 0.73 IN 0700 AM 05/01 COOP PARK FOREST 1 NNE 0.73 IN 0700 AM 05/01 COCORAHS PARK FOREST 1 WNW 0.73 IN 0730 AM 05/01 COCORAHS 1 ESE EVANSTON 0.72 IN 1025 AM 05/01 AWS PARK FOREST 0.71 IN 0500 AM 05/01 COOP HARWOOD HEIGHTS 0.71 IN 1010 AM 05/01 AWS HOFFMAN ESTATES 0.71 IN 1015 AM 05/01 CWOP MIDWAY 3 SW COOP 0.70 IN 1158 PM 04/30 COOP INDIAN HEAD PARK 0.70 IN 0700 AM 05/01 COCORAHS BRIDGEVIEW 1 WNW 0.70 IN 0730 AM 05/01 COCORAHS HARWOOD HEIGHTS 0.70 IN 1020 AM 05/01 AWS MIDWAY 3 SW 0.69 IN 0700 AM 05/01 COOP GLENWOOD 0.69 IN 1015 AM 05/01 CWOP HARWOOD HEIGHTS 0.69 IN 1025 AM 05/01 AWS OAK LAWN 0.68 IN 0800 AM 05/01 COCORAHS SCHAUMBURG 2.9 WSW 0.67 IN 0700 AM 05/01 COCORAHS HOFFMAN ESTATES 0.64 IN 0700 AM 05/01 COCORAHS CHICAGO - MCKINLEY PARK 0.62 IN 1025 AM 05/01 URBANET OAK LAWN 2 SE 0.61 IN 0645 AM 05/01 COCORAHS EVERGREEN PARK 0.61 IN 0700 AM 05/01 COCORAHS BURR RIDGE 0.61 IN 1003 AM 05/01 CWOP OAK LAWN 2 WNW 0.60 IN 0800 AM 05/01 COCORAHS CHICAGO 0.60 IN 1015 AM 05/01 CWOP CHICAGO MIDWAY 0.59 IN 0953 AM 05/01 ASOS CHICAGO RIDGE 0.59 IN 0700 AM 05/01 COCORAHS BURR RIDGE 0.59 IN 1013 AM 05/01 CWOP HOMEWOOD 0.58 IN 0700 AM 05/01 COCORAHS 1 ESE WHEELING 0.58 IN 1010 AM 05/01 AWS PALATINE 1 NNE 0.57 IN 0700 AM 05/01 COCORAHS CHICAGO - LINCOLN PARK 0.56 IN 0700 AM 05/01 COCORAHS 1 ESE WHEELING 0.56 IN 1020 AM 05/01 AWS LANSING AIRPORT 0.55 IN 0955 AM 05/01 AWOS OAK LAWN 1 WSW 0.55 IN 0815 AM 05/01 COCORAHS HAZEL CREST 0.55 IN 1020 AM 05/01 AWS 1 ESE WHEELING 0.55 IN 1025 AM 05/01 AWS HAZEL CREST 0.55 IN 1025 AM 05/01 AWS PALOS PARK 4 W 0.52 IN 0700 AM 05/01 COCORAHS BRIDGEPORT - CHICAGO 0.52 IN 1025 AM 05/01 AWS SOUTH HOLLAND 0.49 IN 1025 AM 05/01 AWS 1 ESE SOUTH CHICAGO 0.48 IN 1025 AM 05/01 AWS 1 SSE CHICAGO LOOP 0.48 IN 1025 AM 05/01 URBANET SOUTH HOLLAND - LITTLE CALUM 0.47 IN 0945 AM 05/01 HADS 2 NNE TINLEY PARK 0.45 IN 1025 AM 05/01 AWS 1 SW HOFFMAN ESTATES 0.45 IN 1025 AM 05/01 AWS LEMONT 0.43 IN 1025 AM 05/01 AWS INVERNESS 0.41 IN 1010 AM 05/01 CWOP 1 SSE EAST HAZEL CREST 0.40 IN 1020 AM 05/01 AWS LEMONT 0.38 IN 1025 AM 05/01 AWS CHICAGO 0.37 IN 1015 AM 05/01 CWOP CHICAGO LOOP 0.37 IN 1025 AM 05/01 AWS PHOENIX 0.36 IN 1025 AM 05/01 AWS CHICAGO - MCKINLEY PARK 0.33 IN 1020 AM 05/01 AWS HOFFMAN ESTATES 5 W 0.32 IN 0945 AM 05/01 COCORAHS ORLAND PARK 0.30 IN 1000 AM 05/01 CWOP ORLAND PARK 0.30 IN 1015 AM 05/01 CWOP LINCOLN PARK - CHICAGO 0.30 IN 1020 AM 05/01 AWS 1 S LINCOLN PARK - CHICAGO 0.30 IN 1025 AM 05/01 AWS 1.3 NW CALUMET CITY 0.28 IN 0900 AM 05/01 HADS RIVERSIDE - DES PLAINES R. 0.26 IN 0945 AM 05/01 HADS GLENVIEW 0.7 SE 0.25 IN 0823 AM 05/01 COCORAHS ...DE KALB COUNTY... GENOA 0.62 IN 0700 AM 05/01 COOP NIU AGRONOMY SHABONNA 5 NNE 0.50 IN 1000 AM 05/01 HADS KINGSTON 2 WNW 0.48 IN 0700 AM 05/01 COCORAHS CORTLAND 0.45 IN 0700 AM 05/01 COCORAHS SYCAMORE 0.43 IN 1017 AM 05/01 CWOP DEKALB 0.30 IN 0700 AM 05/01 COOP GENOA 0.28 IN 1015 AM 05/01 CWOP SANDWICH 0.27 IN 1025 AM 05/01 AWS CORTLAND 0.24 IN 0500 AM 05/01 COCORAHS DEKALB AIRPORT 0.23 IN 0955 AM 05/01 AWOS DEKALB 0.21 IN 0700 AM 05/01 COCORAHS EARLVILLE 5 NNE 0.12 IN 0620 AM 05/01 COCORAHS ...DUPAGE COUNTY... NAPERVILLE 3 SE 2.07 IN 0700 AM 05/01 COCORAHS NAPERVILLE 0.9 ENE 1.78 IN 0700 AM 05/01 COCORAHS LOMBARD 1.2 N 1.67 IN 0800 AM 05/01 COCORAHS LISLE 1 WSW 1.65 IN 0700 AM 05/01 COCORAHS VILLA PARK 1 NW 1.56 IN 0600 AM 05/01 COCORAHS LOMBARD 1.56 IN 0700 AM 05/01 COCORAHS NAPERVILLE 1.55 IN 0600 AM 05/01 COCORAHS GLEN ELLYN 1 SW 1.52 IN 0715 AM 05/01 COCORAHS NAPERVILLE 1.52 IN 1028 AM 05/01 CWOP LOMBARD 1 NW 1.49 IN 0800 AM 05/01 COCORAHS 2 S GLEN ELLYN 1.29 IN 1025 AM 05/01 AWS SALT CR. - ELMHURST 1.26 IN 1020 AM 05/01 HADS NAPERVILLE 1.21 IN 1015 AM 05/01 UCOOP ELMHURST 1 SW 1.20 IN 0600 AM 05/01 COCORAHS NAPERVILLE 1.19 IN 1025 AM 05/01 AWS GLEN ELLYN 1 W 1.17 IN 0700 AM 05/01 COCORAHS AURORA 4 ESE 1.17 IN 0700 AM 05/01 COCORAHS WHEATON 1.17 IN 1025 AM 05/01 CWOP 0.7 NW WOOD DALE 1.16 IN 1005 AM 05/01 HADS ITASCA 1.15 IN 1025 AM 05/01 AWS WEST CHICAGO - DUPAGE ARPT. 1.13 IN 0952 AM 05/01 ASOS BENSENVILLE 1.11 IN 1010 AM 05/01 AWS ELMHURST 2 SE 1.10 IN 0700 AM 05/01 COCORAHS AURORA 4 ESE 1.09 IN 0700 AM 05/01 COCORAHS BENSENVILLE 1.09 IN 1025 AM 05/01 AWS WEST CHICAGO 1.07 IN 1016 AM 05/01 CWOP 1 WSW WOODRIDGE 1.05 IN 1020 AM 05/01 AWS BARTLETT 2 S 1.03 IN 0700 AM 05/01 COCORAHS BOLINGBROOK 2.6 NE 1.02 IN 0800 AM 05/01 COCORAHS WOODRIDGE 0.98 IN 0930 AM 05/01 ALERT WEST CHICAGO 0.97 IN 1015 AM 05/01 CWOP WARRENVILLE 0.94 IN 1027 AM 05/01 CWOP CLARENDON HILLS 0.90 IN 0700 AM 05/01 UCOOP DARIEN 2 SE 0.90 IN 0715 AM 05/01 COCORAHS CLARENDON HILLS 1 NW 0.89 IN 0700 AM 05/01 COCORAHS WINFIELD 0.88 IN 0700 AM 05/01 COCORAHS WOODRIDGE 0.87 IN 1016 AM 05/01 CWOP WEST CHICAGO - KRESS CR. 0.86 IN 0920 AM 05/01 HADS WHEATON 0.84 IN 1000 AM 05/01 CWOP WARRENVILLE - W. BR. DUPAGE 0.83 IN 0925 AM 05/01 HADS WEST CHICAGO - KRESS CR. 0.83 IN 1020 AM 05/01 HADS WEST CHICAGO 4 SE 0.82 IN 0602 AM 05/01 COCORAHS WEST CHICAGO 0.82 IN 1025 AM 05/01 AWS WHEATON 0.79 IN 1020 AM 05/01 CWOP BOLINGBROOK 3 NE 0.74 IN 0700 AM 05/01 COCORAHS SCHAUMBURG AIRPORT 0.71 IN 0955 AM 05/01 AWOS BLOOMINGDALE 1 SSE 0.71 IN 0700 AM 05/01 COCORAHS 1 NNE GLENDALE HEIGHTS 0.68 IN 1025 AM 05/01 AWS WHEATON 0.67 IN 1010 AM 05/01 CWOP ROSELLE 0.66 IN 1016 AM 05/01 CWOP WESTMONT 0.65 IN 1008 AM 05/01 CWOP YORK CENTER 0.65 IN 1010 AM 05/01 URBANET 1 WSW BLOOMINGDALE 0.65 IN 1025 AM 05/01 AWS WHEATON 0.64 IN 1020 AM 05/01 CWOP 1 SSE CAROL STREAM 0.59 IN 1025 AM 05/01 AWS 2 NNE CAROL STREAM 0.55 IN 1025 AM 05/01 AWS ...FORD COUNTY... STELLE 0.26 IN 1015 AM 05/01 ISWS GIBSON CITY 3 WNW 0.01 IN 0700 AM 05/01 COCORAHS ...GRUNDY COUNTY... MORRIS 5 NNW 1.78 IN 0700 AM 05/01 COCORAHS MORRIS 5 NW 1.78 IN 0740 AM 05/01 COCORAHS CARBON HILL 3 NNW 1.09 IN 0700 AM 05/01 COCORAHS CHANNAHON 1.07 IN 1017 AM 05/01 CWOP MINOOKA 1.05 IN 0800 AM 05/01 COCORAHS MORRIS 2 W 1.01 IN 0700 AM 05/01 COCORAHS MORRIS 2 SSE 0.94 IN 0700 AM 05/01 COCORAHS CARBON HILL 3 N 0.94 IN 0700 AM 05/01 COCORAHS 4 NNW COAL CITY 0.88 IN 1030 AM 05/01 CWOP MORRIS AIRPORT 0.83 IN 0955 AM 05/01 AWOS CARBON HILL 3 NE 0.59 IN 0800 AM 05/01 COCORAHS ...IROQUOIS COUNTY... CLIFTON 1 WNW 1.41 IN 0600 AM 05/01 COCORAHS CHEBANSE 2 WSW 1.00 IN 0736 AM 05/01 COCORAHS CHEBANSE 0.86 IN 0700 AM 05/01 COCORAHS 4 ESE CLIFTON 0.20 IN 0600 AM 05/01 COCORAHS CISSNA PARK 1 S 0.18 IN 0500 AM 05/01 COCORAHS CRESCENT CITY 2 N 0.08 IN 0600 AM 05/01 COCORAHS ASHKUM 6 E 0.08 IN 0700 AM 05/01 COCORAHS WATSEKA 0.06 IN 1020 AM 05/01 AWS MILFORD 3.5 ENE 0.05 IN 0700 AM 05/01 COCORAHS MILFORD 0.04 IN 1027 AM 05/01 CWOP BUCKLEY 0.03 IN 0800 AM 05/01 COCORAHS ...KANE COUNTY... AURORA 1.18 IN 0700 AM 05/01 COOP NORTH AURORA 1 ENE 1.10 IN 0700 AM 05/01 COCORAHS BATAVIA 1.07 IN 1016 AM 05/01 CWOP AURORA 2 W 1.00 IN 0700 AM 05/01 COCORAHS BATAVIA 0.97 IN 0600 AM 05/01 UCOOP AURORA 0.97 IN 1025 AM 05/01 CWOP BATAVIA 0.88 IN 0845 AM 05/01 COCORAHS 2 SW NORTH AURORA 0.82 IN 1000 AM 05/01 CWOP GENEVA 0.72 IN 0800 AM 05/01 COCORAHS GENEVA 1 SSW 0.61 IN 0800 AM 05/01 COCORAHS BATAVIA 1 NW 0.58 IN 0700 AM 05/01 COCORAHS BATAVIA 3.4 WSW 0.56 IN 0700 AM 05/01 COCORAHS ST. CHARLES 1 ENE 0.50 IN 0800 AM 05/01 COCORAHS GENEVA 0.48 IN 1015 AM 05/01 CWOP 1 ESE ST. CHARLES 0.41 IN 1025 AM 05/01 AWS 3 WNW NORTH AURORA 0.37 IN 1020 AM 05/01 AWS ELGIN 8 WSW 0.33 IN 0532 AM 05/01 COCORAHS GENEVA 2 WNW 0.32 IN 0700 AM 05/01 COCORAHS SAINT CHARLES 0.31 IN 1025 AM 05/01 CWOP SUGAR GROVE - AURORA ARPT. 0.30 IN 0952 AM 05/01 ASOS SUGAR GROVE 1 NNW 0.30 IN 0700 AM 05/01 COCORAHS SUGAR GROVE 1 NNE 0.29 IN 0700 AM 05/01 COCORAHS ELBURN 0.29 IN 1015 AM 05/01 CWOP GENEVA 4 WSW 0.28 IN 0700 AM 05/01 COCORAHS ELGIN 0.27 IN 0700 AM 05/01 COOP KANEVILLE 3 NNW 0.26 IN 0700 AM 05/01 COCORAHS GENEVA 0.25 IN 1017 AM 05/01 CWOP ELGIN 3 W 0.23 IN 0700 AM 05/01 COCORAHS ELBURN 0.23 IN 1020 AM 05/01 CWOP ST. CHARLES - FERSON CR. 0.22 IN 0915 AM 05/01 HADS 3 NNE CAMPTON HILLS 0.22 IN 1015 AM 05/01 AWS ELGIN 0.22 IN 1019 AM 05/01 CWOP CAMPTON HILLS 3 NNE 0.21 IN 0700 AM 05/01 COCORAHS 1 SW CAMPTON HILLS 0.19 IN 1025 AM 05/01 AWS ELGIN 0.18 IN 0800 AM 05/01 UCOOP ELGIN 1 SSW 0.18 IN 0800 AM 05/01 COCORAHS MAPLE PARK 0.16 IN 0530 AM 05/01 COCORAHS ...KANKAKEE COUNTY... CHEBANSE 1.25 IN 0600 AM 05/01 COCORAHS 1 E KANKAKEE 0.66 IN 1025 AM 05/01 AWS GRANT PARK 0.58 IN 1015 AM 05/01 CWOP 2 ESE HERSCHER 0.52 IN 0700 AM 05/01 COCORAHS UNION HILL 0.51 IN 1015 AM 05/01 CWOP BRADLEY 0.7 SW 0.49 IN 0600 AM 05/01 COCORAHS KANKAKEE 1.4 WSW 0.46 IN 0600 AM 05/01 COCORAHS HERSCHER 3 E 0.44 IN 0700 AM 05/01 COCORAHS BONFIELD 0.40 IN 1015 AM 05/01 CWOP BOURBONNAIS 0.38 IN 0700 AM 05/01 COOP REDDICK 0.31 IN 1016 AM 05/01 CWOP HERSCHER 0.30 IN 1025 AM 05/01 AWS ST. ANNE 3 NNE 0.24 IN 0700 AM 05/01 COCORAHS ST. ANNE 0.20 IN 0700 AM 05/01 COOP ...KENDALL COUNTY... , IL 2.30 IN 0700 AM 05/01 COCORAHS PLAINFIELD 4 SW 1.48 IN 0700 AM 05/01 COCORAHS OSWEGO 1.46 IN 1020 AM 05/01 CWOP 1 SE BOULDER HILL 1.42 IN 0600 AM 05/01 COCORAHS BOULDER HILL 1 NNE 1.29 IN 0700 AM 05/01 COCORAHS YORKVILLE 3 NE 0.98 IN 0700 AM 05/01 COCORAHS YORKVILLE 0.9 SSW 0.96 IN 0700 AM 05/01 COCORAHS YORKVILLE 1.0 N 0.83 IN 0700 AM 05/01 COCORAHS NEWARK 2.2 NE 0.33 IN 0700 AM 05/01 COCORAHS PLANO 1.6 NW 0.30 IN 0700 AM 05/01 COCORAHS ...LA SALLE COUNTY... GRAND RIDGE 1.01 IN 1000 AM 05/01 CWOP STREATOR 0.77 IN 1015 AM 05/01 CWOP MENDOTA 0.37 IN 0730 AM 05/01 COCORAHS PERU 1 NNE 0.31 IN 0700 AM 05/01 COCORAHS OTTAWA 1 N 0.30 IN 0700 AM 05/01 COCORAHS MENDOTA 1 SE 0.27 IN 0700 AM 05/01 COOP OTTAWA - ILLINOIS R. 0.20 IN 0930 AM 05/01 HADS OTTAWA 0.18 IN 0439 AM 05/01 COCORAHS OTTAWA - BUFFALO ROCK SP 0.10 IN 0736 AM 05/01 COOP UTICA 0.05 IN 1000 AM 05/01 CWOP PERU AIRPORT 0.04 IN 0955 AM 05/01 AWOS MARSEILLES 3 W 0.04 IN 0600 AM 05/01 COOP LA SALLE 0.04 IN 0700 AM 05/01 COCORAHS ...LAKE COUNTY... DEERFIELD 1.54 IN 1009 AM 05/01 CWOP BANNOCKBURN 1.11 IN 0700 AM 05/01 COCORAHS LAKE ZURICH 1.4 W 1.02 IN 0600 AM 05/01 COCORAHS DEERFIELD - W. FORK N. BR. C 0.95 IN 0955 AM 05/01 HADS DEERFIELD - N. BR. CHICAGO R 0.94 IN 1010 AM 05/01 HADS 1 ESE DEERFIELD 0.86 IN 1025 AM 05/01 AWS HIGHWOOD 0.85 IN 0700 AM 05/01 COCORAHS LAKE FOREST 0.80 IN 1000 AM 05/01 CWOP BUFFALO GROVE 2 N 0.79 IN 0700 AM 05/01 COCORAHS DEERFIELD 0.79 IN 1010 AM 05/01 AWS LAKE FOREST 0.79 IN 1015 AM 05/01 CWOP LAKE FOREST 1 NNW 0.78 IN 0800 AM 05/01 COCORAHS NORTH BARRINGTON 1.3 S 0.75 IN 0700 AM 05/01 COCORAHS MUNDELEIN 4 WSW 0.74 IN 0700 AM 05/01 COOP LAKE ZURICH 1 N 0.72 IN 0600 AM 05/01 COCORAHS RIVERWOODS 1 NE 0.72 IN 0700 AM 05/01 COCORAHS GRAYSLAKE 1 WNW 0.71 IN 0534 AM 05/01 COCORAHS BUFFALO GROVE 0.67 IN 1015 AM 05/01 CWOP BARRINGTON 0.66 IN 1002 AM 05/01 CWOP LAKE ZURICH 0.61 IN 1000 AM 05/01 CWOP HAWTHORN WOODS 0.58 IN 1016 AM 05/01 CWOP LIBERTYVILLE 0.56 IN 0730 AM 05/01 COCORAHS 2 WNW MUNDELEIN 0.54 IN 1025 AM 05/01 AWS VERNON HILLS 0.54 IN 1025 AM 05/01 CWOP LINDENHURST 1 NE 0.51 IN 0800 AM 05/01 COCORAHS LIBERTYVILLE 0.51 IN 1008 AM 05/01 CWOP FOREST LAKE 1 SSW 0.50 IN 0700 AM 05/01 UCOOP LAKE BLUFF 2 W 0.48 IN 0600 AM 05/01 COCORAHS LINCOLNSHIRE 1 NNW 0.42 IN 0800 AM 05/01 COCORAHS LAKE FOREST 0.42 IN 1000 AM 05/01 CWOP LIBERTYVILLE 0.37 IN 1025 AM 05/01 AWS MUNDELEIN 1 NNE 0.36 IN 0800 AM 05/01 COCORAHS WAUKEGAN AIRPORT 0.33 IN 0955 AM 05/01 ASOS 2 N FOX LAKE HILLS 0.31 IN 1025 AM 05/01 AWS WINTHROP HARBOR 0.28 IN 0800 AM 05/01 COCORAHS GRAYSLAKE 0.28 IN 1009 AM 05/01 CWOP BUFFALO GROVE 0.26 IN 1016 AM 05/01 CWOP LAKE VILLA 1 SW 0.25 IN 0630 AM 05/01 COCORAHS ZION 1 NW 0.23 IN 0700 AM 05/01 COCORAHS WADSWORTH 1.4 S 0.22 IN 0730 AM 05/01 COCORAHS LAKE BARRINGTON 0.20 IN 1015 AM 05/01 CWOP LONG LAKE 0.19 IN 0700 AM 05/01 COCORAHS ...LEE COUNTY... STEWARD 3 S 0.51 IN 0700 AM 05/01 COOP DIXON 0.44 IN 1006 AM 05/01 CWOP DIXON 3 NNW 0.37 IN 0800 AM 05/01 COCORAHS DIXON - ROCK R. 0.26 IN 0900 AM 05/01 HADS NELSON 3 NNW 0.25 IN 0800 AM 05/01 COCORAHS DIXON 1 NE 0.22 IN 0700 AM 05/01 COCORAHS SUBLETTE 0.20 IN 1019 AM 05/01 CWOP PAW PAW 2 S 0.15 IN 0700 AM 05/01 COOP ASHTON 0.14 IN 0715 AM 05/01 COCORAHS AMBOY 1 WSW 0.13 IN 0602 AM 05/01 COCORAHS ...LIVINGSTON COUNTY... CHATSWORTH 1.40 IN 0700 AM 05/01 COOP CHATSWORTH 1 S 1.00 IN 0700 AM 05/01 COCORAHS PONTIAC - VERMILION R. 0.36 IN 0945 AM 05/01 HADS EMINGTON 2 SSE 0.35 IN 0600 AM 05/01 COCORAHS DWIGHT 0.20 IN 0700 AM 05/01 COOP PONTIAC AIRPORT 0.17 IN 0955 AM 05/01 AWOS ...MCHENRY COUNTY... WOODSTOCK 5 NW 2.00 IN 0700 AM 05/01 COOP 3 ESE HARVARD 1.86 IN 1020 AM 05/01 AWS HEBRON 2 WSW 1.70 IN 0700 AM 05/01 UCOOP WOODSTOCK 1.48 IN 1015 AM 05/01 CWOP HARVARD 1.16 IN 1015 AM 05/01 CWOP HARVARD 4.4 NNE 0.94 IN 0700 AM 05/01 COCORAHS 1 SSW HARVARD 0.83 IN 1025 AM 05/01 AWS MARENGO 0.82 IN 0700 AM 05/01 COCORAHS UNION 0.75 IN 1025 AM 05/01 AWS WOODSTOCK 4 SW 0.70 IN 0700 AM 05/01 COCORAHS WONDER LAKE - NIPPERSINK CR. 0.45 IN 0945 AM 05/01 HADS WONDER LAKE 0.39 IN 0700 AM 05/01 COCORAHS BULL VALLEY 2 WNW 0.34 IN 0800 AM 05/01 COCORAHS 1 SE CRYSTAL LAKE 0.34 IN 1025 AM 05/01 AWS LAKE IN THE HILLS 0.31 IN 1010 AM 05/01 CWOP CARY 0.29 IN 1019 AM 05/01 CWOP ALGONQUIN 0.29 IN 1020 AM 05/01 CWOP ALGONQUIN 1 NNW 0.28 IN 0245 AM 05/01 COCORAHS MCHENRY 0.28 IN 1016 AM 05/01 CWOP CRYSTAL LAKE 3.9 WNW 0.18 IN 0700 AM 05/01 COCORAHS MCHENRY 1 ENE 0.18 IN 0900 AM 05/01 COCORAHS RICHMOND 0.18 IN 1015 AM 05/01 CWOP JOHNSBURG 0.18 IN 1016 AM 05/01 CWOP HUNTLEY 0.17 IN 1018 AM 05/01 CWOP WONDER LAKE 0.11 IN 1016 AM 05/01 CWOP CRYSTAL LAKE 1 WSW 0.10 IN 0700 AM 05/01 COCORAHS 1 ESE LAKEWOOD 0.08 IN 0700 AM 05/01 COCORAHS ...OGLE COUNTY... ROCHELLE 0.22 IN 1020 AM 05/01 CWOP ROCHELLE AIRPORT 0.11 IN 0955 AM 05/01 AWOS ...WILL COUNTY... NAPERVILLE 1.94 IN 1000 AM 05/01 CWOP PLAINFIELD 1.74 IN 1015 AM 05/01 CWOP PLAINFIELD 1.7 WNW 1.40 IN 0700 AM 05/01 COCORAHS NAPERVILLE - W. BR. DUPAGE R 1.32 IN 1015 AM 05/01 HADS 1 NW ROCKDALE 1.12 IN 0700 AM 05/01 COCORAHS MONEE 5 W 1.07 IN 0800 AM 05/01 COCORAHS FRANKFORT 1.07 IN 1009 AM 05/01 CWOP 6 NNE BONFIELD 0.99 IN 1020 AM 05/01 AWS JOLIET 2 N 0.95 IN 0700 AM 05/01 UCOOP PLAINFIELD 2 SSE 0.95 IN 0700 AM 05/01 COCORAHS NEW LENOX 2 NE 0.86 IN 0800 AM 05/01 COCORAHS JOLIET 0.82 IN 1025 AM 05/01 CWOP ROMEOVILLE - NWS CHICAGO 0.81 IN 0700 AM 05/01 COOP ROMEOVILLE - LEWIS AIRPORT 0.80 IN 0955 AM 05/01 AWOS PLAINFIELD 3 ESE 0.80 IN 0900 AM 05/01 COCORAHS SHOREWOOD - DUPAGE R. 0.80 IN 0945 AM 05/01 HADS JOLIET AIRPORT 0.77 IN 0955 AM 05/01 AWOS , IL 0.75 IN 0700 AM 05/01 COCORAHS NEW LENOX 1 SSE 0.74 IN 0700 AM 05/01 COCORAHS HOMER GLEN 1 NNE 0.74 IN 0700 AM 05/01 COCORAHS CRETE 3 E 0.73 IN 0700 AM 05/01 COCORAHS JOLIET 0.8 E 0.72 IN 0600 AM 05/01 COCORAHS HOMER GLEN 0.71 IN 1005 AM 05/01 CWOP NEW LENOX 2 SW 0.70 IN 0700 AM 05/01 COCORAHS NEW LENOX 1 SE 0.67 IN 0800 AM 05/01 COCORAHS MONEE 5 SE 0.66 IN 0800 AM 05/01 COCORAHS MONEE RESERVOIR 0.64 IN 0800 AM 05/01 COOP NEW LENOX 0.58 IN 1015 AM 05/01 CWOP PEOTONE 0.56 IN 0700 AM 05/01 COOP CHANNAHON 3 SE 0.56 IN 0700 AM 05/01 COCORAHS PEOTONE 0.56 IN 0700 AM 05/01 COCORAHS PEOTONE 0.56 IN 1000 AM 05/01 CWOP LOCKPORT - CHICAGO SHIP CANA 0.55 IN 0900 AM 05/01 HADS 1 WSW CRYSTAL LAWNS 0.54 IN 1025 AM 05/01 AWS 2.0 NW HOMER GLEN 0.53 IN 1000 AM 05/01 HADS CHANNAHON 5 S 0.52 IN 0700 AM 05/01 COCORAHS MOKENA 2 WSW 0.50 IN 0700 AM 05/01 COCORAHS BEECHER 3 SE 0.50 IN 0700 AM 05/01 COCORAHS BEECHER 0.50 IN 1015 AM 05/01 CWOP MANHATTAN 5 ENE 0.48 IN 0800 AM 05/01 COOP MANHATTAN 5 ENE 0.48 IN 0800 AM 05/01 COCORAHS MANHATTAN 1 E 0.48 IN 0900 AM 05/01 COCORAHS 2.0 NW HOMER GLEN 0.45 IN 1000 AM 05/01 HADS MANHATTAN 2 SE 0.39 IN 0700 AM 05/01 COCORAHS 1 NNW SHOREWOOD 0.37 IN 1010 AM 05/01 AWS FRANKFORT 0.37 IN 1010 AM 05/01 URBANET MOKENA INTERMEDIATE SCHOOL M 0.34 IN 1009 AM 05/01 URBANET BEECHER 0.34 IN 1025 AM 05/01 AWS LAKEWOOD SHORES 1 SE 0.33 IN 0630 AM 05/01 COCORAHS MIDEWIN RAWS 0.31 IN 1005 AM 05/01 RAWS WILMINGTON 0.23 IN 0700 AM 05/01 COCORAHS ...WINNEBAGO COUNTY... ROSCOE 0.87 IN 1030 AM 05/01 CWOP 4 NNW ROCKFORD 0.82 IN 0700 AM 05/01 COCORAHS ROCKFORD 3 WSW 0.81 IN 0700 AM 05/01 COCORAHS ROCKFORD AIRPORT 0.79 IN 0954 AM 05/01 ASOS MACHESNEY PARK 1 NW 0.78 IN 0500 AM 05/01 COCORAHS WINNEBAGO 5 SE 0.77 IN 0600 AM 05/01 COCORAHS SOUTH BELOIT 2 SE 0.66 IN 0700 AM 05/01 COCORAHS PERRYVILLE - KISHWAUKEE R. 0.46 IN 0930 AM 05/01 HADS ROCKTON - ROCK R. 0.25 IN 0930 AM 05/01 HADS ROCKTON 3.1 SW 0.24 IN 0630 AM 05/01 COCORAHS SOUTH BELOIT 0.18 IN 1006 AM 05/01 CWOP ...INDIANA... ...JASPER COUNTY... ROSELAWN 3 ENE 0.33 IN 0700 AM 05/01 COCORAHS DE MOTTE 6 S 0.32 IN 0700 AM 05/01 COCORAHS DEMOTTE 0.21 IN 0800 AM 05/01 COCORAHS STOUTSBURG 1 SW 0.19 IN 0700 AM 05/01 COCORAHS 4 NW REMINGTON 0.06 IN 1020 AM 05/01 AWS RENSSELAER 2 SW 0.05 IN 0730 AM 05/01 COOP COLLEGEVILLE 0.05 IN 0600 AM 05/01 COCORAHS REMINGTON 0.04 IN 0800 AM 05/01 COCORAHS RENSSELAER 5 NW 0.03 IN 0600 AM 05/01 COCORAHS RENSSELAER AIRPORT 0.02 IN 0955 AM 05/01 AWOS ...LAKE COUNTY... SCHERERVILLE 1 E 1.13 IN 0800 AM 05/01 COCORAHS GARY 5 ENE 0.89 IN 0700 AM 05/01 COCORAHS HOBART 0.85 IN 1027 AM 05/01 CWOP GRIFFITH 0.84 IN 0700 AM 05/01 COCORAHS EAST CHICAGO - IN HARBOR CAN 0.83 IN 1000 AM 05/01 HADS ST. JOHN 3 SSE 0.79 IN 0700 AM 05/01 COCORAHS CROWN POINT 2 NNE 0.72 IN 0800 AM 05/01 COCORAHS CROWN POINT 0.71 IN 0730 AM 05/01 COOP HOBART 1 ENE 0.70 IN 0700 AM 05/01 COCORAHS MUNSTER 0.68 IN 1015 AM 05/01 CWOP DYER 0.67 IN 0700 AM 05/01 COCORAHS HOBART 2.4 SE 0.67 IN 0930 AM 05/01 COCORAHS ST. JOHN 0.64 IN 0600 AM 05/01 COCORAHS SCHERERVILLE 1 E 0.60 IN 0800 AM 05/01 COCORAHS HIGHLAND 1 SW 0.57 IN 0700 AM 05/01 COCORAHS MUNSTER 0.54 IN 1005 AM 05/01 CWOP 1 N HAMMOND 0.54 IN 1010 AM 05/01 URBANET DYER 0.52 IN 1010 AM 05/01 URBANET HIGHLAND 0.50 IN 1025 AM 05/01 URBANET GRIFFITH 0.47 IN 1009 AM 05/01 URBANET 1 NNW LAKE STATION 0.47 IN 1025 AM 05/01 AWS 1 NNW ST. JOHN 0.46 IN 1010 AM 05/01 AWS MUNSTER 0.46 IN 1020 AM 05/01 URBANET HIGHLAND 0.44 IN 1025 AM 05/01 AWS CEDAR LAKE 2 S 0.43 IN 0800 AM 05/01 COCORAHS CROWN POINT 0.42 IN 1025 AM 05/01 AWS 1 SSW LOWELL 0.41 IN 1025 AM 05/01 AWS 2 SW ST. JOHN 0.40 IN 1025 AM 05/01 AWS MUNSTER - HART DITCH 0.37 IN 1000 AM 05/01 HADS GARY AIRPORT 0.31 IN 0945 AM 05/01 AWOS ...NEWTON COUNTY... ROSELAWN 0.14 IN 1017 AM 05/01 CWOP KENTLAND 2 SSE 0.08 IN 0700 AM 05/01 COCORAHS ...PORTER COUNTY... VALPARAISO 4 SW 0.98 IN 0600 AM 05/01 COCORAHS VALPARAISO 1 N 0.93 IN 0617 AM 05/01 COCORAHS DUNE ACRES RAWS 0.88 IN 0955 AM 05/01 RAWS CHESTERTON 0.3 ENE 0.84 IN 0741 AM 05/01 COCORAHS CHESTERTON 0.83 IN 1016 AM 05/01 CWOP HEBRON 0.80 IN 1025 AM 05/01 AWS CHESTERTON 2 E 0.79 IN 0630 AM 05/01 COCORAHS PORTAGE 0.78 IN 1016 AM 05/01 CWOP OGDEN DUNES 0.76 IN 0500 AM 05/01 COCORAHS HEBRON 0.70 IN 1015 AM 05/01 CWOP PORTAGE 3 E 0.69 IN 0700 AM 05/01 COCORAHS VALPARAISO 2 NW 0.68 IN 0645 AM 05/01 COCORAHS PORTER 0.68 IN 0700 AM 05/01 COCORAHS CHESTERTON 4 ESE 0.68 IN 0700 AM 05/01 COCORAHS VALPARAISO 2.6 WNW 0.65 IN 0600 AM 05/01 COCORAHS VALPARAISO 0.6 SE 0.65 IN 0700 AM 05/01 COCORAHS BOONE GROVE 4 NNE 0.63 IN 0600 AM 05/01 COCORAHS 1 SSE PORTAGE 0.59 IN 1025 AM 05/01 AWS VALPARAISO AIRPORT 0.54 IN 0956 AM 05/01 ASOS KOUTS 0.51 IN 1000 AM 05/01 CWOP 1 ESE VALPARAISO 0.47 IN 1025 AM 05/01 AWS
Radar
Environment
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| Hand analyzed surface weather map from 12 pm CDT on April 30, showing the incoming warm front and richer low-level moisture. Along and near a warm front is often a location where surface winds are backed (often southeasterly in direction). With strong southwesterly winds aloft such as in this setup, this meant turning winds with height and increasing wind speeds with height. This is often favorable for the development of supercell thunderstorms, which were the common storm mode in the first few hours of this event. |
Additional Info
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Media use of NWS Web News Stories is encouraged! Please acknowledge the NWS as the source of any news information accessed from this site. Additional recaps can be found on the NWS Chicago Past Events Page |
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