Overview
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Storm Reports
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| Wednesday and Wednesday Night's/Thursday Morning's Storm Reports |
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO IL
738 AM CDT SAT JUL 31 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0205 AM TSTM WND DMG 6 NNW POPLAR GROVE 42.45N 88.85W
07/29/2021 BOONE IL BROADCAST MEDIA
LARGE, OLD TREE SNAPPED AT THE BASE NEAR
IL-76 AND BLAINE ROAD. TREE SHOWED SOME
EVIDENCE OF PRIOR ROTTING. TIME ESTIMATED BY
RADAR.
0208 AM TSTM WND DMG 2 N CAPRON 42.43N 88.74W
07/29/2021 BOONE IL LAW ENFORCEMENT
TREE DOWNED ONTO A CAR. TIME ESTIMATED FROM
RADAR.
0210 AM TSTM WND DMG WONDER LAKE 42.39N 88.35W
07/29/2021 MCHENRY IL PUBLIC
WIRES BLOWN DOWN.
0210 AM TSTM WND DMG 1 NW ANTIOCH 42.49N 88.13W
07/29/2021 LAKE IL 911 CALL CENTER
WIRES WERE BLOWN DOWN AND A VEHICLE WAS
DAMAGED ALONG FOREST DRIVE.
0211 AM TSTM WND DMG 2 SE CAPRON 42.38N 88.71W
07/29/2021 MCHENRY IL LAW ENFORCEMENT
TREE DOWNED ONTO ROAD. TIME ESTIMATED FROM
RADAR.
0212 AM TSTM WND GST HEBRON 42.48N 88.43W
07/29/2021 E60 MPH MCHENRY IL EMERGENCY MNGR
ESTIMATED 60 MPH WINDS JUST SOUTH OF HEBRON.
0214 AM TSTM WND DMG MCHENRY 42.33N 88.27W
07/29/2021 MCHENRY IL EMERGENCY MNGR
WIRES BLOW DOWN.
0214 AM TSTM WND DMG LAKE VILLA 42.44N 88.12W
07/29/2021 LAKE IL 911 CALL CENTER
WIRES BLOWN DOWN ON PARK AVENUE.
0215 AM TSTM WND DMG 1 WSW WOODSTOCK 42.31N 88.47W
07/29/2021 MCHENRY IL PUBLIC
PHOTO SHARED VIA FACEBOOK SHOWS LARGE TREE
SNAPPED AT THE BASE AT EMRICSON PARK IN
WOODSTOCK. TIME ESTIMATED BY RADAR.
0215 AM TSTM WND DMG 1 NE TIMBERLANE 42.34N 88.85W
07/29/2021 BOONE IL EMERGENCY MNGR
LARGE BRANCH DOWNED NEAR IL76 AND DAWSON
LAKE ROAD. TREE HAD EVIDENCE OF ROTTING
PRIOR TO STORM. TIME ESTIMATED BY RADAR.
0222 AM TSTM WND GST CRYSTAL LAKE 42.26N 88.37W
07/29/2021 M60 MPH MCHENRY IL EMERGENCY MNGR
MEASURED GUST TO 60 MPH AT MCHENRY COUNTY
COLLEGE.
0224 AM TSTM WND DMG 1 W BEACH PARK 42.43N 87.87W
07/29/2021 LAKE IL 911 CALL CENTER
WIRES DOWN ON EVERGREEN AVENUE.
0224 AM TSTM WND DMG 1 W WINTHROP HARBOR 42.48N 87.85W
07/29/2021 LAKE IL 911 CALL CENTER
WIRES DOWN ON 11TH STREET.
0224 AM TSTM WND DMG ZION 42.45N 87.83W
07/29/2021 LAKE IL FIRE DEPT/RESCUE
TREE LIMB BLOWN DOWN ON A HIGH VOLTAGE LINE
AT 27TH STREET AND BETHEL BLVD.
0225 AM TSTM WND DMG LAKEWOOD 42.23N 88.37W
07/29/2021 MCHENRY IL PUBLIC
PHOTO SHARED VIA SOCIAL MEDIA SHOWS 12-18
DIAMETER TREE BRANCH DOWNED. TIME ESTIMATED
BY RADAR.
0228 AM TSTM WND GST 1 NW ISLAND LAKE 42.28N 88.20W
07/29/2021 M62 MPH MCHENRY IL TRAINED SPOTTER
MULTIPLE LARGE LIMBS SNAPPED OFF THE TOP OF
A 30 FT TALL TREE.
0229 AM TSTM WND DMG WAUCONDA 42.26N 88.14W
07/29/2021 LAKE IL PUBLIC
PHOTO SHARED ON SOCIAL MEDIA OF TREE LIMBS
BLOWN DOWN.
0230 AM TSTM WND DMG ALGONQUIN 42.17N 88.29W
07/29/2021 MCHENRY IL PUBLIC
PHOTO SHARED TO TWITTER SHOWS LARGE TREE
BRANCHES DOWNED ACROSS DRIVEWAY IN THE
ALGONQUIN VICINITY. TIME ESTIMATED BY RADAR.
0230 AM TSTM WND DMG CRYSTAL LAKE 42.24N 88.32W
07/29/2021 MCHENRY IL PUBLIC
MULTIPLE REPORTS OF TREES DOWNED IN AND
AROUND CRYSTAL LAKE.
0232 AM TSTM WND DMG MUNDELEIN 42.26N 87.99W
07/29/2021 LAKE IL BROADCAST MEDIA
LARGE TREE LIMBS BLOWN DOWN NEAR SHADDLE
AVENUE AND FRENCH DRIVE.
0233 AM TSTM WND DMG 1 S LAKE BARRINGTON 42.20N 88.17W
07/29/2021 LAKE IL 911 CALL CENTER
A TREE WAS BLOWN DOWN COMPLETELY BLOCKING
OLD BARRINGTON ROAD.
0235 AM TSTM WND DMG LAKE ZURICH 42.20N 88.09W
07/29/2021 LAKE IL PUBLIC
PHOTO SHARED VIA TWITTER SHOWS LARGE BRANCH
DOWNED IN LAKE ZURICH AREA. TIME ESTIMATED
VIA RADAR.
0235 AM TSTM WND DMG KILDEER 42.18N 88.05W
07/29/2021 LAKE IL PUBLIC
PHOTO SHARED VIA TWITTER SHOWS LARGE
BRANCHES DOWNED, DAMAGING ITEMS ON PATIO.
TIME ESTIMATED BY RADAR.
0235 AM TSTM WND DMG 1 W SLEEPY HOLLOW 42.09N 88.34W
07/29/2021 KANE IL EMERGENCY MNGR
PHOTO SHOWS LARGE TREE SNAPPED AT BASE AND
DOWNED ONTO BUILDING AND COVERED PATIO NEAR
BUSHWOOD DRIVE AND TECHNOLOGY DRIVE IN
ELGIN. TIME ESTIMATED BY RADAR.
0245 AM TSTM WND DMG EAST DUNDEE 42.10N 88.28W
07/29/2021 KANE IL PUBLIC
PHOTO SHARED ON SOCIAL MEDIA OF A LARGE TREE
SNAPPED WHICH FELL ONTO POWER LINES AND
BROKE A UTILITY POLE.
0245 AM TSTM WND DMG 1 SSE EAST DUNDEE 42.08N 88.26W
07/29/2021 KANE IL EMERGENCY MNGR
TREES DOWN COMPLETELY ACROSS THE ROAD NEAR
ROUTE 25 AND SUNSET PARK DRIVE.
0246 AM TSTM WND DMG 1 SE MAPLE PARK 41.89N 88.59W
07/29/2021 KANE IL 911 CALL CENTER
WIRES DOWN AND TREES ON FIRE AT ROUTE 38 AND
SCHRADER ROAD.
0247 AM TSTM WND GST 1 WNW SOUTH ELGIN 42.00N 88.31W
07/29/2021 M58 MPH KANE IL PUBLIC
PUBLIC REPORT OF MEASURED 58MPH WIND GUST.
0247 AM TSTM WND GST CHICAGO EXCUTIVE AIRPOR 42.12N 87.90W
07/29/2021 M55 MPH COOK IL ASOS
0249 AM TSTM WND DMG ROLLING MEADOWS 42.08N 88.02W
07/29/2021 COOK IL PUBLIC
TOP OF A LARGE TREE SNAPPED OFF. TIME
ESTIMATED FROM RADAR.
0250 AM TSTM WND GST ELGIN 42.04N 88.28W
07/29/2021 M58 MPH KANE IL MESONET
MEASURED GUST TO 58 MPH ON A PERSONAL
WEATHER STATION.
0250 AM TSTM WND DMG ELGIN 42.03N 88.27W
07/29/2021 KANE IL 911 CALL CENTER
LARGE TREE LIMB IN THE ROADWAY AT LIBERTY
STREET AND SHERMAN AVENUE.
0250 AM TSTM WND GST 1 ENE DEKALB 41.94N 88.73W
07/29/2021 M54 MPH DE KALB IL PUBLIC
PUBLIC REPORT OF MEASURED 54 MPH GUST IN
DEKALB.
0250 AM TSTM WND DMG 2 ENE GOLF 42.06N 87.75W
07/29/2021 COOK IL BROADCAST MEDIA
PHOTO SHARED TO TWITTER BY LOCAL MEDIA SHOWS
TREE BRANCHES AND DEBRIS BEING CLEARED FROM
I-94 AND OLD ORCHARD ROAD INTERCHANGE. TIME
ESTIMATED BY RADAR.
0252 AM TSTM WND DMG DES PLAINES 42.04N 87.89W
07/29/2021 COOK IL PUBLIC
PHOTO SHARED ON SOCIAL MEDIA OF TREE LIMBS
BLOWN DOWN.
0252 AM TSTM WND DMG STREAMWOOD 42.01N 88.18W
07/29/2021 COOK IL AMATEUR RADIO
WIRES BLOWN DOWN IN HANOVER TOWNSHIP.
0253 AM TSTM WND DMG SCHAUMBURG 42.03N 88.06W
07/29/2021 COOK IL PUBLIC
LARGE TREE DOWN BLOCKING SPRING VALLEY
COURT.
0255 AM TSTM WND DMG MT PROSPECT 42.08N 87.91W
07/29/2021 COOK IL PUBLIC
LARGE TREE DOWN BLOCKING WOLF ROAD. PHOTO
SHARED ON SOCIAL MEDIA.
0256 AM TSTM WND GST 1 S WEST CHICAGO 41.87N 88.20W
07/29/2021 E75 MPH DUPAGE IL EMERGENCY MNGR
UPDATE TO PREVIOUS REPORT FROM 1 S WEST
CHICAGO. PHOTOS FROM LOCAL EMERGENCY
MANAGEMENT SHOW ROOF DAMAGE TO A RESIDENCE
ON ELIZABETH STREET. ALSO DAMAGE TO A POWER
TRANSMISSION POLE NEAR WEST CHICAGO HIGH
SCHOOL. NUMEROUS INSTANCES OF BRANCHES
SNAPPED OVER SEVERAL BLOCKS OF SOUTHERN WEST
CHICAGO, INCLUDING LARGE BRANCHES UP TO 1
FOOT IN DIAMETER. ONE TREE HAD ALMOST ALL
BRANCHES REMOVED FROM THE TOP HALF. FLAG
POLE BENT ABOUT 35 DEGREES IN A SOUTH
SOUTHEAST DIRECTION. DAMAGE CONSISTENT WITH
STRAIGHT-LINE WINDS ESTIMATED AT 75 MPH OR
GREATER. TIME ESTIMATED BY RADAR.
0257 AM TSTM WND GST GLENVIEW 42.08N 87.80W
07/29/2021 M61 MPH COOK IL BROADCAST MEDIA
0258 AM TSTM WND DMG WAYNE 41.95N 88.25W
07/29/2021 DUPAGE IL PUBLIC
CORRECTS TIME OF PREVIOUS REPORT. SEVERAL
LARGE BRANCHES AND POWER LINES DOWNED IN
WAYNE. TIME ESTIMATED FROM RADAR.
0259 AM TSTM WND GST DUPAGE AIRPORT 41.91N 88.26W
07/29/2021 M64 MPH DUPAGE IL ASOS
0300 AM MARINE TSTM WIND WILMETTE BUOY 42.13N 87.66W
07/29/2021 M47 MPH LMZ740 IL BUOY
0300 AM TSTM WND DMG WHEATON 41.86N 88.10W
07/29/2021 DUPAGE IL PUBLIC
PHOTO SHARED VIA SOCIAL MEDIA SHOWS SMALL
BRANCH DOWNED IN WHEATON AREA. TIME
ESTIMATED BY RADAR.
0300 AM TSTM WND DMG 1 W NORTH CENTER - CHIC 41.95N 87.70W
07/29/2021 COOK IL PUBLIC
MULTIPLE MPING REPORTS OF MINOR TREE DAMAGE
IN NORTHERN PORTIONS OF CHICAGO. TIME
ESTIMATED BY RADAR.
0300 AM TSTM WND DMG ROGERS PARK - CHICAGO 42.01N 87.66W
07/29/2021 COOK IL BROADCAST MEDIA
VIDEO FROM BROADCAST MEDIA SHOWS TREE LIMB
DOWN NEXT TO SHERIDAN ROAD IN ROGERS PARK
CHICAGO. TIME ESTIMATED BY RADAR.
0301 AM TSTM WND DMG WARRENVILLE 41.82N 88.17W
07/29/2021 DUPAGE IL PUBLIC
LARGE LIMB SNAPPED OFF OF TREE. TIME
ESTIMATED FROM RADAR.
0301 AM TSTM WND DMG WEST RIDGE - CHICAGO 42.00N 87.70W
07/29/2021 COOK IL PUBLIC
LARGE TREE LIMB SNAPPED AND PARTIALLY DOWNED
ONTO A CAR. TIME ESTIMATED FROM RADAR.
0302 AM TSTM WND DMG 1 SW BATAVIA 41.84N 88.33W
07/29/2021 KANE IL 911 CALL CENTER
SIX INCH DIAMETER TREE LIMB BLOWN DOWN NEAR
INTERSECTION OF MILLVIEW DRIVE AND TOWN
AVENUE.
0303 AM TSTM WND DMG 4 W BATAVIA 41.85N 88.38W
07/29/2021 KANE IL LAW ENFORCEMENT
7 INCH DIAMETER RIVER BIRCH TREE SNAPPED.
TIME ESTIMATED FROM RADAR.
0305 AM TSTM WND DMG 1 ENE NAPERVILLE 41.78N 88.12W
07/29/2021 DUPAGE IL PUBLIC
POST TO TWITTER SHOWS PICTURE OF DOWNED TREE
AND INDICATES SEVERAL LARGE BRANCHES DOWNED
AT NAPERVILLE COUNTRY CLUB. TIME ESTIMATED
BY RADAR.
0305 AM TSTM WND DMG 1 WNW WESTCHESTER 41.85N 87.90W
07/29/2021 COOK IL PUBLIC
PHOTO SHARED VIA TWITTER SHOWS LARGE
BRANCHES SNAPPED NEAR THE TOP OF A TREE IN
WESTCHESTER.
0305 AM TSTM WND DMG 1 SW BELMONT-CRAGIN 41.92N 87.79W
07/29/2021 COOK IL BROADCAST MEDIA
VIDEO SHARED TO TWITTER BY LOCAL MEDIA SHOWS
METAL SIDING ON ENTIRE NORTH SIDE OF
INDUSTRIAL BUILDING REMOVED AND LAYING NEXT
TO RAILROAD TRACKS, DISRUPTING COMMUTER RAIL
SERVICE. ALSO REPORTS OF POWER LINES DOWNED
ONTO TRACKS IN VICINITY. TIME ESTIMATED BY
RADAR.
0309 AM TSTM WND DMG WESTCHESTER 41.86N 87.89W
07/29/2021 COOK IL PUBLIC
NUMEROUS LARGE TREES DOWNED IN AND AROUND
WESTCHESTER.
0314 AM TSTM WND DMG RIVERSIDE 41.83N 87.82W
07/29/2021 COOK IL PUBLIC
SEVERAL TREE LIMBS BLOWN DOWN.
0316 AM MARINE TSTM WIND HARRISON-DEVER CRIB 41.92N 87.57W
07/29/2021 M54 MPH LMZ741 IL C-MAN STATION
0316 AM TSTM WND GST MIDWAY AIRPORT 41.79N 87.74W
07/29/2021 M54 MPH COOK IL ASOS
0320 AM TSTM WND DMG 1 NNE BRIDGEPORT - CHIC 41.85N 87.64W
07/29/2021 COOK IL PUBLIC
PUBLIC REPORTS TREE DOWNED ONTO CAR ON 26TH
STREET IN BRIDGEPORT CHICAGO. TIME ESTIMATED
BY RADAR.
0320 AM TSTM WND DMG 1 SW BURBANK 41.73N 87.79W
07/29/2021 COOK IL PUBLIC
PUBLIC REPORT OF TREE BRANCHES DOWNED IN
BURBANK. TIME ESTIMATED BY RADAR.
0321 AM TSTM WND GST 3 SW MIDWAY AIRPORT 41.74N 87.78W
07/29/2021 M60 MPH COOK IL CO-OP OBSERVER
0321 AM TSTM WND DMG HICKORY HILLS 41.72N 87.83W
07/29/2021 COOK IL PUBLIC
POWER POLES DOWNED ALONG 95TH ST IN HICKORY
HILLS. TIME ESTIMATED FROM RADAR.
0325 AM TSTM WND DMG 1 NNE ROMEOVILLE 41.66N 88.09W
07/29/2021 WILL IL PUBLIC
LARGE TREE LIMB DOWNED. TIME ESTIMATED FROM
RADAR.
0326 AM TSTM WND DMG 1 NNE AUBURN-GRESHAM 41.76N 87.65W
07/29/2021 COOK IL BROADCAST MEDIA
PHOTOS SHARED ON SOCIAL MEDIA OF TREE, POWER
LINE AND UTILITY POLE DAMAGE NEAR 74TH
STREET AND CARPENTER STREET. VEHICLE DAMAGED
AFTER DRIVING ONTO A DOWNED UTILITY POLE.
0330 AM TSTM WND DMG 1 SSW PLAINFIELD 41.59N 88.21W
07/29/2021 WILL IL NWS EMPLOYEE
LARGE TREE BRANCH DOWNED. TIME ESTIMATED
FROM RADAR.
0348 AM TSTM WND DMG 1 N PORTAGE 41.59N 87.17W
07/29/2021 PORTER IN EMERGENCY MNGR
NUMEROUS DOWNED BRANCHES. ONE BRANCH DAMAGED
A CAR. LOCATION APPROXIMATE. TIME ESTIMATED
BY RADAR.
0350 AM MARINE TSTM WIND MICHIGAN CITY BUOY 41.76N 86.97W
07/29/2021 M47 MPH LMZ745 IN BUOY
0350 AM TSTM WND DMG HOBART 41.53N 87.26W
07/29/2021 LAKE IN EMERGENCY MNGR
LARGE TREE BRANCHES DOWNED NEAR LAKE GEORGE
IN HOBART. TIME ESTIMATED BY RADAR.
0355 AM TSTM WND DMG 6 SE CHESTERTON 41.55N 86.98W
07/29/2021 PORTER IN 911 CALL CENTER
PORTER COUNTY 911 DISPATCH REPORTS TREE
BRANCHES DOWNED NEAR ANDERSONS VINEYARD.
TIME ESTIMATED BY RADAR.
0400 AM TSTM WND DMG 3 S VALPARAISO 41.43N 87.07W
07/29/2021 PORTER IN 911 CALL CENTER
PORTER COUNTY 911 DISPATCH REPORTS TREE
BRANCHES DOWNED NEAR INTERSECTION OF
DIVISION ROAD AND SMOKE ROAD. TIME ESTIMATED
BY RADAR.
0615 AM SEICHE 1 ESE SOUTH CHICAGO 41.73N 87.53W
07/29/2021 LMZ742 IL OFFICIAL NWS OBS
NOS GAUGE INDICATED 1.5-2.0 FOOT RISE IN
WATER LEVEL WITHIN 1 HOUR AT CALUMET HARBOR.
SIGNIFICANT WATER LEVEL FLUCTUATIONS
CONTINUE. POSSIBLE METEOTSUNAMI.
0615 AM SEICHE NAVY PIER 41.89N 87.61W
07/29/2021 LMZ741 IL OFFICIAL NWS OBS
USGS GAUGE INDICATED 1.5-2.0 FOOT RISE IN
WATER LEVEL WITHIN 1 HOUR AT CHICAGO LOCK.
SIGNIFICANT WATER LEVEL FLUCTUATIONS
CONTINUE. POSSIBLE METEOTSUNAMI.
0615 AM SEICHE 1 N EAST CHICAGO 41.66N 87.45W
07/29/2021 LAKE IN OFFICIAL NWS OBS
USGS GAUGE INDICATED 2.0-2.5 FOOT RISE IN
WATER LEVEL WITHIN 1 HOUR AT INDIANA HARBOR.
SIGNIFICANT WATER LEVEL FLUCTUATIONS
CONTINUE. POSSIBLE METEOTSUNAMI.
Photos
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| Damage in West Chicago. Courtesy of Steve Gottlieb. | Damage in West Chicago. Courtesy of Steve Gottlieb. | Damage in Elgin. Courtesy of Michael Brauer. |
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| Damage in Elgin. Courtesy of Michael Brauer. | Damage in Westchester. Courtesy of Mark Brozyna. | Damage in Woodstock. Courtesy of John Bauer. |
Rain Reports
COCORAHS PRECIPITATION SUMMARY NATIONAL WEATHER SERVICE CHICAGO IL 1000 AM CDT THU JUL 29 2021 COCORAHS PRECIPITATION REPORTS THESE REPORTS ARE CONSIDERED SUPPLEMENTAL AND UNOFFICIAL VALUES ARE FOR THE PREVIOUS 24 HOURS ENDING AROUND 7 AM LOCAL TIME :COCORAHS PRECIPITATION REPORTS IN ILLINOIS : SNOW SNOW WATER : PCPN FALL DEPTH EQUIV IL-KN-104 : GENEVA 3.9 WSW * : 0.77 / 0.0 / 0.0 / 0.00 IL-LE-25 : DIXON 0.8 NE * : 0.71 / MM / MM / MM IL-DK-37 : SYCAMORE 0.7 ESE * : 0.63 / MM / MM / MM IL-DK-29 : EARLVILLE 4.8 NNE * : 0.54 / MM / MM / MM IL-BN-14 : CAPRON 0.1 N * : 0.52 / MM / MM / MM IL-MCH-103: HARVARD 4.4 NNE * : 0.50 / MM / MM / MM IL-MCH-33 : WOODSTOCK 3.8 SW * : 0.50 / MM / MM / MM IL-DP-156 : NAPERVILLE 0.5 NW * : 0.49 / MM / MM / MM IL-WN-50 : ROCKTON 3.1 SW * : 0.49 / 0.0 / 0.0 / MM IL-WN-45 : MACHESNEY PARK 0.9 W * : 0.48 / MM / MM / MM IL-MCH-87 : MARENGO 0.7 NNW * : 0.48 / MM / MM / MM IL-WN-41 : SOUTH BELOIT 1.5 ESE * : 0.47 / MM / MM / MM IL-MCH-96 : HUNTLEY 1.6 SW * : 0.45 / MM / MM / MM IL-MCH-80 : HUNTLEY 0.1 SSE * : 0.45 / 0.0 / 0.0 / MM IL-BN-20 : CALEDONIA 1.4 W * : 0.44 / MM / MM / MM IL-MCH-52 : WOODSTOCK 0.8 SSW * : 0.43 / MM / MM / MM IL-BN-19 : BELVIDERE 5.0 NNW * : 0.43 / MM / MM / MM IL-WN-44 : WINNEBAGO 5.4 SE * : 0.40 / MM / MM / MM IL-DK-39 : LEE 2.7 NNE * : 0.39 / MM / MM / MM IL-DK-38 : CORTLAND 0.3 E * : 0.39 / MM / MM / MM IL-LE-10 : DIXON 3.0 NNW * : 0.38 / MM / MM / MM IL-CK-342 : MERRIONETTE PARK 1.7 NE * : 0.38 / MM / MM / MM IL-MCH-13 : BULL VALLEY 2.5 WNW * : 0.38 / 0.0 / 0.0 / MM IL-KK-45 : KANKAKEE 1.4 WSW * : 0.37 / MM / MM / MM IL-WN-51 : MACHESNEY PARK 1.5 SSW * : 0.37 / MM / MM / MM IL-WN-48 : ROCKFORD 3.8 NNW * : 0.36 / MM / MM / MM IL-KN-127 : GENEVA 0.6 SSE * : 0.35 / MM / MM / MM IL-DP-172 : WEST CHICAGO 3.0 SSE * : 0.35 / MM / MM / MM IL-LE-5 : STERLING 4.3 NE * : 0.35 / MM / MM / MM IL-LK-87 : LAKE ZURICH 1.3 N * : 0.34 / MM / MM / MM IL-KN-23 : BATAVIA 1.5 WNW * : 0.33 / MM / MM / MM IL-DK-5 : CORTLAND 0.3 SSW * : 0.33 / MM / MM / MM IL-KN-67 : ST. CHARLES 6.0 NW * : 0.33 / 0.0 / 0.0 / MM IL-KN-119 : MAPLE PARK 3.1 SE * : 0.32 / MM / MM / MM IL-DK-27 : KINGSTON 2.3 WNW * : 0.32 / MM / MM / MM IL-KD-7 : PLANO 0.4 NNE * : 0.32 / MM / MM / MM IL-KN-22 : GENEVA 1.0 SSW * : 0.32 / MM / MM / MM IL-MCH-101: CRYSTAL LAKE 1.9 SW * : 0.31 / MM / MM / MM IL-KN-126 : PINGREE GROVE 0.9 N * : 0.31 / MM / MM / MM IL-KN-96 : ELBURN 0.3 NW * : 0.30 / MM / MM / MM IL-KN-133 : GENEVA 0.9 E * : 0.29 / MM / MM / MM IL-CK-106 : HOFFMAN ESTATES 4.6 W * : 0.29 / MM / MM / MM IL-MCH-94 : MCHENRY 2.4 E * : 0.29 / MM / MM / MM IL-KD-5 : MONTGOMERY 0.8 SSE * : 0.28 / MM / MM / MM IL-MCH-43 : ALGONQUIN 0.7 N * : 0.28 / 0.0 / 0.0 / 0.00 IL-CK-317 : HOFFMAN ESTATES 0.6 ESE * : 0.28 / MM / MM / MM IL-KN-86 : ELGIN 7.5 WSW * : 0.28 / MM / MM / MM IL-WL-164 : WILMINGTON 0.9 ENE * : 0.28 / MM / MM / MM IL-WL-79 : PEOTONE 0.5 SE * : 0.28 / MM / MM / MM IL-CK-163 : ARLINGTON HEIGHTS 1.2 SW * : 0.28 / MM / MM / MM IL-IR-22 : CHEBANSE 1.6 SW * : 0.27 / MM / MM / MM IL-KN-78 : GENEVA 1.3 SSW * : 0.27 / 0.0 / 0.0 / 0.00 IL-DP-176 : WINFIELD 0.6 SSW * : 0.27 / MM / MM / MM IL-CK-88 : COUNTRYSIDE 0.8 ENE * : 0.27 / MM / MM / MM IL-MCH-83 : CRYSTAL LAKE 1.0 WSW * : 0.27 / MM / MM / MM IL-WL-67 : CHANNAHON 2.5 SSE * : 0.27 / MM / MM / MM IL-CK-211 : OAK LAWN 1.6 WNW * : 0.26 / MM / MM / MM IL-KD-102 : OSWEGO 2.4 SSW * : 0.26 / 0.0 / 0.0 / MM IL-KD-106 : YORKVILLE 2.8 NE * : 0.26 / MM / MM / MM IL-MCH-95 : CARY 0.5 SSW * : 0.26 / MM / MM / MM IL-MCH-49 : CARY 0.3 NE * : 0.26 / MM / MM / MM IL-KD-107 : YORKVILLE 2.1 NNW * : 0.26 / MM / MM / MM IL-CK-229 : FLOSSMOOR 1.2 ESE * : 0.25 / MM / MM / MM IL-KD-108 : NEWARK 2.2 NE * : 0.25 / MM / MM / MM IL-KN-98 : GILBERTS 0.5 N * : 0.25 / MM / MM / MM IL-CK-322 : ARLINGTON HEIGHTS 0.8 NNW* : 0.25 / MM / MM / MM IL-KN-5 : BATAVIA 0.7 WSW * : 0.25 / 0.0 / 0.0 / MM IL-DP-102 : BOLINGBROOK 2.7 NE * : 0.25 / MM / MM / MM IL-KN-95 : ELGIN 2.5 W * : 0.24 / 0.0 / MM / MM IL-KN-64 : ST. CHARLES 0.1 E * : 0.24 / 0.0 / 0.0 / MM IL-CK-346 : PALATINE 1.2 NW * : 0.24 / MM / MM / MM IL-KN-2 : ELGIN 2.3 WNW * : 0.24 / MM / MM / MM IL-KN-51 : SUGAR GROVE 1.4 ENE * : 0.24 / MM / MM / MM IL-KN-118 : SLEEPY HOLLOW 0.7 W * : 0.24 / MM / MM / MM IL-DP-141 : GLEN ELLYN 1.1 WSW * : 0.23 / MM / MM / MM IL-DK-36 : DE KALB 3.5 WSW * : 0.23 / MM / MM / MM IL-CK-347 : STREAMWOOD 1.1 WSW * : 0.23 / MM / MM / MM IL-CK-12 : BRIDGEVIEW 1.3 NNW * : 0.23 / MM / MM / MM IL-DP-155 : MEDINAH 1.0 SSW * : 0.23 / 0.0 / 0.0 / 0.00 IL-KN-121 : GENEVA 1.3 NW * : 0.23 / 0.0 / 0.0 / 0.00 IL-CK-149 : OAK LAWN 0.5 SSW * : 0.23 / MM / MM / MM IL-CK-64 : HOMEWOOD 0.1 ESE * : 0.22 / MM / MM / MM IL-CK-94 : LINCOLNWOOD 1.8 E * : 0.22 / MM / MM / MM IL-CK-246 : LEMONT 0.4 S * : 0.22 / MM / MM / MM IL-KN-4 : SUGAR GROVE 0.7 NE * : 0.22 / MM / MM / MM IL-DP-139 : WESTMONT 1.1 SSW * : 0.21 / MM / MM / MM IL-KN-132 : BATAVIA 0.3 SE * : 0.21 / MM / MM / MM IL-LE-8 : ASHTON 0.4 SSW * : 0.21 / 0.0 / 0.0 / 0.00 IL-KD-109 : YORKVILLE 1.0 N * : 0.21 / MM / MM / MM IL-KN-128 : BATAVIA 3.4 WSW * : 0.21 / MM / MM / MM IL-DP-174 : BOLINGBROOK 2.6 NE * : 0.21 / MM / MM / MM IL-CK-214 : ROGERS PARK 1.5 SW * : 0.21 / MM / MM / MM IL-DP-163 : LOMBARD 1.2 E * : 0.21 / MM / MM / MM IL-DP-57 : AURORA 3.5 NE * : 0.21 / MM / MM / MM IL-CK-285 : HARWOOD HEIGHTS 0.4 NNE * : 0.20 / MM / MM / MM IL-DP-100 : BARTLETT 1.1 SE * : 0.20 / MM / MM / MM IL-WL-174 : JOLIET 0.8 E * : 0.20 / MM / MM / MM IL-CK-364 : EVERGREEN PARK 0.4 WNW * : 0.20 / MM / MM / MM IL-WN-26 : ROCKFORD 1.5 ENE * : 0.20 / MM / MM / MM IL-CK-306 : OAK FOREST 0.6 N * : 0.20 / 0.0 / 0.0 / MM IL-WL-96 : WILMINGTON 6.3 NW * : 0.20 / MM / MM / MM IL-CK-296 : CHICAGO HEIGHTS 2.4 NNW * : 0.19 / MM / MM / MM IL-KD-110 : YORKVILLE 0.9 SSW * : 0.19 / MM / MM / MM IL-LK-39 : RIVERWOODS 0.4 ENE * : 0.19 / MM / MM / MM IL-LK-81 : LAKE VILLA 2.3 WSW * : 0.19 / MM / MM / MM IL-LK-42 : GURNEE 1.6 W * : 0.19 / MM / MM / MM IL-CK-316 : OAK LAWN 0.8 WSW * : 0.18 / MM / MM / MM IL-LS-50 : SENECA 1.2 NNE * : 0.18 / MM / MM / MM IL-CK-253 : MIDLOTHIAN 0.1 SSE * : 0.18 / MM / MM / MM IL-CK-121 : PALATINE 1.3 E * : 0.18 / 0.0 / 0.0 / MM IL-WL-99 : MANHATTAN 1.9 SE * : 0.18 / MM / MM / MM IL-CK-180 : PARK RIDGE 0.5 SSW * : 0.18 / MM / MM / MM IL-CK-74 : OAK PARK 1.3 NNE * : 0.18 / 0.0 / MM / MM IL-DP-173 : LOMBARD 1.2 N * : 0.18 / MM / MM / MM IL-LK-15 : BANNOCKBURN 0.5 ESE * : 0.18 / MM / MM / MM IL-CK-278 : HOFFMAN ESTATES 1.6 SE * : 0.18 / MM / MM / MM IL-CK-14 : CHICAGO 5.5 ESE * : 0.18 / MM / MM / MM IL-DP-117 : ELMHURST 2.0 SE * : 0.18 / MM / MM / MM IL-DP-79 : BURR RIDGE 1.9 SW * : 0.18 / MM / MM / MM IL-LK-112 : LINDENHURST 1.0 ENE * : 0.18 / MM / MM / MM IL-WL-172 : JOLIET 2.0 WNW * : 0.18 / MM / MM / MM IL-WL-105 : PLAINFIELD 2.9 NNW * : 0.18 / MM / MM / MM IL-CK-148 : OAK LAWN 1.9 SE * : 0.18 / MM / MM / MM IL-LK-114 : ROUND LAKE HEIGHTS 0.5 NE* : 0.17 / MM / MM / MM IL-WL-73 : WILMINGTON 2.6 SE * : 0.17 / MM / MM / MM IL-CK-152 : CHICAGO RIDGE 0.2 WSW * : 0.17 / 0.0 / MM / MM IL-LK-26 : ZION 0.5 WNW * : 0.17 / MM / MM / MM IL-CK-75 : ELK GROVE VILLAGE 2.2 WSW* : 0.16 / MM / MM / MM IL-CK-294 : PALATINE 1.4 NNE * : 0.16 / MM / MM / MM IL-CK-192 : PARK RIDGE 0.7 WNW * : 0.16 / MM / MM / MM IL-CK-150 : ARLINGTON HEIGHTS 1.2 S * : 0.16 / MM / MM / MM IL-DP-175 : NAPERVILLE 0.9 ENE * : 0.16 / MM / MM / MM IL-DP-16 : AURORA 3.6 SE * : 0.16 / MM / MM / MM IL-DP-85 : VILLA PARK 1.0 NW * : 0.16 / MM / MM / MM IL-CK-168 : RAVENSWOOD MANOR 0.1 ESE * : 0.16 / MM / MM / MM IL-WL-72 : NEW LENOX 2.9 ENE * : 0.16 / MM / MM / MM IL-CK-366 : OAK PARK 1.0 NNE * : 0.16 / MM / MM / MM IL-DP-101 : AURORA 3.8 SE * : 0.16 / 0.0 / 0.0 / 0.00 IL-DP-42 : CAROL STREAM 0.3 SSE * : 0.16 / MM / MM / MM IL-WL-42 : MOKENA 1.3 W * : 0.15 / MM / MM / MM IL-DP-164 : WEST CHICAGO 3.5 SE * : 0.15 / MM / MM / MM IL-DP-40 : LOMBARD 1.0 NNW * : 0.15 / MM / MM / MM IL-DP-132 : WHEATON 2.0 NNE * : 0.15 / 0.0 / 0.0 / 0.00 IL-GY-16 : MORRIS 6.4 ESE * : 0.15 / MM / MM / MM IL-WL-173 : LOCKPORT 5.0 W * : 0.15 / MM / MM / MM IL-CK-63 : ELK GROVE VILLAGE 0.6 ESE* : 0.15 / MM / MM / MM IL-CK-320 : PARK FOREST 0.7 WNW * : 0.15 / MM / MM / MM IL-LE-23 : SUBLETTE 3.1 WNW * : 0.15 / 0.0 / 0.0 / 0.00 IL-CK-358 : BURR RIDGE 1.0 ENE * : 0.15 / MM / MM / MM IL-KN-33 : NORTH AURORA 1.5 NE * : 0.15 / MM / MM / MM IL-WL-23 : BEECHER 3.4 SSE * : 0.15 / MM / MM / MM IL-WL-16 : HOMER GLEN 0.8 ENE * : 0.15 / MM / MM / MM IL-WL-80 : LOCKPORT 1.3 SE * : 0.15 / MM / MM / MM IL-LK-100 : LONG LAKE 0.4 S * : 0.15 / MM / MM / MM IL-WL-142 : MOKENA 3.4 WNW * : 0.15 / MM / MM / MM IL-WL-25 : CRETE 2.6 E * : 0.15 / MM / MM / MM IL-GY-28 : MORRIS 1.5 SW * : 0.15 / MM / MM / MM IL-LK-23 : WINTHROP HARBOR 0.2 SSE * : 0.15 / MM / MM / MM IL-WL-26 : MANHATTAN 0.8 ESE * : 0.14 / MM / MM / MM IL-WL-97 : NEW LENOX 3.3 E * : 0.14 / 0.0 / 0.0 / 0.00 IL-CK-145 : OAK PARK 1.5 S * : 0.14 / MM / MM / MM IL-CK-325 : MOUNT PROSPECT 1.3 SSE * : 0.14 / MM / MM / MM IL-KN-123 : AURORA 2.8 WSW * : 0.14 / 0.0 / MM / MM IL-GY-27 : MORRIS 5.9 ESE * : 0.14 / MM / MM / MM IL-LK-103 : BUFFALO GROVE 1.3 ESE * : 0.14 / MM / MM / MM IL-CK-69 : PARK FOREST 0.8 NNE * : 0.14 / MM / MM / MM IL-LK-121 : LIBERTYVILLE 0.4 ESE * : 0.14 / MM / MM / MM IL-WL-154 : NAPERVILLE 2.9 SSE * : 0.14 / MM / MM / MM IL-LK-27 : WINTHROP HARBOR 0.7 SSW * : 0.14 / MM / MM / MM IL-WL-92 : NAPERVILLE 4.0 SSW * : 0.14 / MM / MM / MM IL-LK-19 : WAUKEGAN 2.2 N * : 0.13 / MM / MM / MM IL-WL-61 : CHANNAHON 0.8 NNE * : 0.13 / MM / MM / MM IL-LK-69 : HIGHWOOD 0.9 S * : 0.13 / 0.0 / 0.0 / MM IL-KK-40 : ST ANNE 3.2 NNE * : 0.13 / MM / MM / MM IL-WL-131 : HOMER GLEN 0.7 NNE * : 0.13 / MM / MM / MM IL-WL-159 : NEW LENOX 2.1 S * : 0.13 / MM / MM / MM IL-IR-20 : CHEBANSE 0.6 SSW * : 0.13 / MM / MM / MM IL-WL-121 : MONEE 4.9 W * : 0.13 / MM / MM / MM IL-KD-24 : OSWEGO 5.0 SSE * : 0.13 / MM / MM / MM IL-WL-51 : PLAINFIELD 2.4 SSE * : 0.13 / MM / MM / MM IL-WL-138 : CRETE 2.7 W * : 0.13 / MM / MM / MM IL-CK-50 : PALOS PARK 1.3 SW * : 0.13 / MM / MM / MM IL-GY-21 : COAL CITY 2.8 N * : 0.13 / MM / MM / MM IL-GY-10 : MINOOKA 0.3 NE * : 0.12 / MM / MM / MM IL-GY-1 : CARBON HILL 3.1 N * : 0.12 / 0.0 / 0.0 / MM IL-WL-167 : PLAINFIELD 3.7 SSW * : 0.12 / MM / MM / MM IL-CK-61 : OAK PARK 1.0 SW * : 0.12 / MM / MM / MM IL-WL-147 : NEW LENOX 2.0 ESE * : 0.12 / MM / MM / MM IL-DP-109 : ELMHURST 0.8 ESE * : 0.12 / 0.0 / 0.0 / 0.00 IL-KN-124 : AURORA 3.1 WSW * : 0.12 / MM / MM / MM IL-KK-28 : CHEBANSE 0.4 NNE * : 0.12 / MM / MM / MM IL-LS-57 : MENDOTA 0.4 ENE * : 0.12 / MM / MM / MM IL-CK-131 : SCHAUMBURG 2.0 E * : 0.12 / MM / MM / MM IL-WL-165 : FRANKFORT 1.3 ESE * : 0.12 / MM / MM / MM IL-CK-331 : NORTHFIELD 0.3 S * : 0.11 / MM / MM / MM IL-KD-34 : PLAINFIELD 4.8 SW * : 0.11 / 0.0 / 0.0 / MM IL-CK-321 : EVANSTON 0.9 S * : 0.11 / MM / MM / MM IL-WL-63 : NEW LENOX 1.8 SE * : 0.11 / MM / MM / MM IL-LK-13 : LAKE BLUFF 1.3 W * : 0.11 / MM / MM / MM IL-GY-20 : MORRIS 2.5 SSE * : 0.11 / MM / MM / MM IL-CK-361 : GLENVIEW 0.7 SE * : 0.10 / MM / MM / MM IL-CK-359 : CHICAGO 5.5 NNW * : 0.10 / MM / MM / MM IL-CK-345 : FRANKLIN PARK 0.5 SSE * : 0.10 / MM / MM / MM IL-CK-367 : MOUNT PROSPECT 0.2 NNE * : 0.10 / MM / MM / MM IL-LK-11 : LINCOLNSHIRE 0.9 N * : 0.10 / MM / MM / MM IL-CK-326 : MORTON GROVE 1.2 WNW * : 0.10 / MM / MM / MM IL-WL-20 : MANHATTAN 4.7 ENE * : 0.10 / 0.0 / 0.0 / MM IL-DP-38 : ELMHURST 0.4 SW * : 0.09 / MM / MM / MM IL-GY-37 : MAZON 2.4 SE * : 0.09 / MM / MM / MM IL-CK-53 : GLENCOE 0.1 NW * : 0.09 / MM / MM / MM IL-WL-149 : BULT FIELD-MONEE 4.9 SE * : 0.09 / 0.0 / 0.0 / MM IL-CK-336 : EVANSTON 0.8 ESE * : 0.08 / 0.0 / 0.0 / 0.00 IL-WL-46 : PEOTONE 0.4 ENE * : 0.08 / MM / MM / MM IL-DP-150 : BLOOMINGDALE 1.2 ESE * : 0.08 / MM / MM / MM IL-LS-1 : OTTAWA 1.3 NW * : 0.08 / MM / MM / MM IL-LE-22 : AMBOY 0.5 SSW * : 0.08 / 0.0 / 0.0 / 0.00 IL-IR-2 : ASHKUM 5.6 E * : 0.07 / MM / MM / MM IL-CK-323 : CHICAGO 6.8 NW * : 0.07 / MM / MM / MM IL-IR-21 : CLIFTON 0.5 WNW * : 0.07 / MM / MM / MM IL-LS-62 : OTTAWA 1.8 S * : 0.07 / MM / MM / MM IL-CK-334 : EVANSTON 0.6 S * : 0.07 / MM / MM / MM IL-KK-39 : HERSCHER 3.3 E * : 0.07 / 0.0 / 0.0 / MM IL-LS-39 : OTTAWA 0.5 NNW * : 0.06 / MM / MM / MM IL-IR-24 : CLIFTON 3.9 ESE * : 0.06 / MM / MM / MM IL-LS-49 : NORTH UTICA 6.3 N * : 0.05 / MM / MM / MM IL-LV-26 : * : 0.04 / MM / MM / MM IL-LS-34 : LA SALLE 0.1 W * : 0.03 / MM / MM / MM IL-LS-65 : GRAND RIDGE 3.2 ESE * : 0.03 / MM / MM / MM IL-LS-60 : PERU 0.7 ENE * : 0.03 / MM / MM / MM IL-IR-14 : WATSEKA 6.9 WNW * : 0.02 / MM / MM / MM IL-FD-9 : GIBSON CITY 3.0 WNW * : 0.00 / 0.0 / MM / MM IL-LV-6 : PONTIAC 1.0 SE * : 0.00 / 0.0 / MM / MM IL-FD-10 : GIBSON CITY 6.5 NE * : 0.00 / 0.0 / MM / MM IL-LV-21 : CHATSWORTH 1.2 S * : 0.00 / 0.0 / MM / MM IL-IR-16 : CISSNA PARK 0.6 S * : 0.00 / 0.0 / MM / MM :COCORAHS PRECIPITATION REPORTS IN INDIANA : SNOW SNOW WATER : PCPN FALL DEPTH EQUIV IN-LK-110 : HIGHLAND 0.7 SW * : 0.36 / MM / MM / MM IN-PT-165 : VALPARAISO 2.6 WNW * : 0.25 / MM / MM / MM IN-LK-91 : MUNSTER 1.5 NNW * : 0.22 / MM / MM / MM IN-LK-78 : SCHERERVILLE 1.4 E * : 0.20 / MM / MM / MM IN-PT-80 : PORTAGE 2.8 E * : 0.19 / MM / MM / MM IN-LK-26 : CROWN POINT 1.1 N * : 0.19 / MM / MM / MM IN-LK-50 : HOBART 1.6 E * : 0.19 / MM / MM / MM IN-JS-45 : DE MOTTE 1.2 SSW * : 0.18 / MM / MM / MM IN-LK-114 : HOBART 2.0 NNW * : 0.17 / MM / MM / MM IN-PT-92 : HEBRON 1.2 NW * : 0.17 / MM / MM / MM IN-NW-7 : BROOK 4.2 W * : 0.17 / MM / MM / MM IN-PT-172 : PORTER 0.5 S * : 0.17 / MM / MM / MM IN-PT-79 : LAKES OF THE FOUR SEASONS* : 0.17 / MM / MM / MM IN-LK-94 : GRIFFITH 1.2 N * : 0.16 / MM / MM / MM IN-PT-157 : PORTAGE 2.4 NNW * : 0.16 / MM / MM / MM IN-JS-47 : REMINGTON 0.3 N * : 0.16 / MM / MM / MM IN-LK-85 : HEBRON 6.0 SSW * : 0.15 / MM / MM / MM IN-LK-115 : GARY 5.9 ENE * : 0.15 / MM / MM / MM IN-PT-117 : VALPARAISO 5.5 SSW * : 0.15 / MM / MM / MM IN-PT-69 : PORTER 0.6 S * : 0.15 / MM / MM / MM IN-LK-99 : ST. JOHN 2.8 SE * : 0.14 / MM / MM / MM IN-LK-111 : HOBART 1.1 S * : 0.14 / MM / MM / MM IN-PT-12 : VALPARAISO 4.3 SW * : 0.14 / MM / MM / MM IN-JS-43 : RENSSELAER 10.5 NNE * : 0.13 / MM / MM / MM IN-LK-98 : GRIFFITH 1.2 N * : 0.13 / MM / MM / MM IN-JS-46 : WHEATFIELD 4.6 W * : 0.12 / MM / MM / MM IN-JS-73 : WHEATFIELD 4.1 WSW * : 0.12 / MM / MM / MM IN-PT-134 : VALPARAISO 1.7 N * : 0.12 / MM / MM / MM IN-JS-36 : DE MOTTE 1.3 SW * : 0.12 / MM / MM / MM IN-JS-49 : DE MOTTE 4.1 SW * : 0.11 / MM / MM / MM IN-LK-107 : LOWELL 3.1 NNW * : 0.11 / MM / MM / MM IN-PT-110 : CHESTERTON 1.4 ENE * : 0.11 / MM / MM / MM IN-PT-98 : VALPARAISO 0.9 NNW * : 0.10 / 0.0 / 0.0 / 0.00 IN-PT-8 : VALPARAISO 0.6 SE * : 0.10 / MM / MM / MM IN-JS-7 : RENSSELAER 1.9 SSW * : 0.10 / MM / MM / MM IN-PT-91 : CHESTERTON 4.2 E * : 0.10 / MM / MM / MM IN-JS-14 : RENSSELAER 5.2 NW * : 0.10 / MM / MM / MM IN-PT-133 : VALPARAISO 2.2 WNW * : 0.10 / MM / MM / MM IN-PT-3 : VALPARAISO 2.0 WSW * : 0.09 / MM / MM / MM IN-JS-54 : RENSSELAER 4.3 N * : 0.09 / MM / MM / MM IN-JS-16 : RENSSELAER 8.4 ENE * : 0.04 / MM / MM / MM IN-NW-3 : KENTLAND 0.3 ENE * : 0.03 / 0.0 / MM / MM IN-NW-6 : KENTLAND 1.7 SSE * : 0.03 / MM / MM / MM $$
Environment
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| SPC mesoanalysis of Most-Unstable CAPE at 1 AM. Values analyzed in excess of 4,000 J/kg indicate significant energy for severe thunderstorm development and maintenance over northern Illinois. | SPC mesoanalysis of Effective Deep Layer Shear at 1 AM. Values were strong, generally around 35-40 kts, across northeast Illinois supporting organized, sustained thunderstorm development. | SPC Mesoanalysis of Effective Storm-Relative Helicity at 1 AM. Values were maximized mainly north of the Illinois state line, indicate a more favorable region for QLCS tornado development. |
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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