Alert archive / Illinois / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 91, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jun 9, 2011, 3:20 AM CDT for Lee County, Illinois. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 9, 2011, 3:20 AM CDT (08:20 UTC)
- Expired
- Jun 9, 2011, 4:15 AM CDT
- In force
- 55 min
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lee County, IL
The radar
The Chicago radar (KLOT), 102 km from the middle of the area, began a volume at 08:20 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 8.3 hours before the alert went out and 101 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2717 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1625 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.9
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Chicago, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 9, 3:09 AM CDT, 11 minutes earlier.
Area forecast discussion, Jun 9, 3:09 AM CDT, 11 minutes before
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</html>Hazardous weather outlook, Jun 8, 3:49 PM CDT, 11 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 349 PM CDT WED JUN 8 2011 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 092100- WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE- DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON- IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON- 349 PM CDT WED JUN 8 2011 /449 PM EDT WED JUN 8 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...TONIGHT. WEATHER HAZARDS EXPECTED: THUNDERSTORMS...THE STRONGEST OF WHICH MAY PRODUCE: DAMAGING WIND GUSTS IN EXCESS OF 60 MPH. QUARTER SIZE HAIL. FREQUENT CLOUD TO GROUND LIGHTNING. LOCALLY HEAVY RAINFALL IN EXCESS OF AN INCH. AREAS AFFECTED AND TIMING: THUNDERSTORMS WILL BE POSSIBLE ACROSS NORTHWEST AND NORTH CENTRAL ILLINOIS EARLY THIS EVENING. THUNDERSTORMS WILL LIKELY SPREAD SOUTHEAST ACROSS THE REMAINDER OF THE OUTLOOK AREA LATER THIS EVENING AND OVERNIGHT. DISCUSSION: A COLD FRONT STRETCHING FROM WISCONSIN SOUTHWEST INTO KANSAS THIS AFTERNOON WILL BE THE FOCAL POINT FOR THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON INTO EARLY EVENING. THE AIRMASS AHEAD OF THE FRONTAL BOUNDARY IS VERY UNSTABLE AND THUNDERSTORMS ARE EXPECTED TO INITIATE ACROSS PORTIONS OF SOUTHERN WISCONSIN AND NORTHEASTERN IOWA LATE THIS AFTERNOON AS A MID LEVEL DISTURBANCE MOVES ACROSS THE REGION. THESE THUNDERSTORMS WILL LIKELY CONTINUE TO MOVE SOUTHEAST INTO NORTHWEST AND NORTH CENTRAL ILLINOIS THIS EVENING WITH A WIND AND HAIL THREAT ACROSS THESE AREAS. AS THE FRONT CONTINUES TO SAG SOUTH...THUNDERSTORMS WILL BECOME ORGANIZED INTO A LINE AND TRAINING OF THESE THUNDERSTORMS WILL POTENTIALLY BRING MULTIPLE ROUNDS OF HEAVY RAIN TO SOME AREAS. LOCALIZED FLASH FLOODING...MAINLY IN URBANIZED OR POOR DRAINAGE AREAS WILL BE A CONCERN OVERNIGHT. PORTIONS OF THE KANKAKEE RIVER WILL REMAIN IN FLOOD. PORTIONS OF THE ILLINOIS RIVER WILL REMAIN NEAR BANKFULL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. PERIODIC CHANCES OF THUNDERSTORMS WILL CONTINUE THURSDAY INTO EARLY SATURDAY. SOME OF THESE THUNDERSTORMS COULD BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL THURSDAY AFTERNOON...MAINLY SOUTH OF INTERSTATE 80. THERE IS ALSO A CHANCE OF SEVERE THUNDERSTORMS FRIDAY AFTERNOON AND EVENING...MAINLY ACROSS THE ILLINOIS PORTION OF THE OUTLOOK AREA. LOCALLY HEAVY RAINFALL MAY BE POSSIBLE WITH STORMS LATE FRIDAY. THERE IS A CHANCE OF THUNDERSTORMS AGAIN MONDAY AND TUESDAY. PORTIONS OF THE KANKAKEE RIVER WILL REMAIN IN FLOOD. PORTIONS OF THE ILLINOIS RIVER WILL REMAIN NEAR BANKFULL. OTHER RIVERS MAY SEE RISES IF HEAVY RAINFALL MATERIALIZES ACROSS PORTIONS OF THE OUTLOOK AREA THROUGH FRIDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTERS MAY BE NEEDED THIS EVENING AND TONIGHT. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO LMZ740>745-092100- WINTHROP HARBOR TO WILMETTE HARBOR- WILMETTE HARBOR TO NORTHERLY ISLAND- NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY- GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY- 349 PM CDT WED JUN 8 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. GUSTY SOUTHWEST WINDS WILL RESULT IN HAZARDOUS CONDITIONS FOR SMALL CRAFT THROUGH THIS EVENING. THUNDERSTORMS ARE LIKELY BY THIS EVENING. SOME STORMS COULD BE SEVERE DURING THE EVENING HOURS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. HAZARDOUS WAVE CONDITIONS FOR SMALL CRAFT ARE POSSIBLE THURSDAY AND FRIDAY. THERE WILL BE ADDITIONAL PERIODIC CHANCES OF THUNDERSTORMS THURSDAY THROUGH EARLY SATURDAY...AND AGAIN MONDAY AND TUESDAY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-092100- LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH FOX ISLAND 5 NM OFFSHORE- LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI- LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO MID LAKE- 349 PM CDT WED JUN 8 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. THUNDERSTORMS ARE LIKELY ACROSS THE LAKE THIS EVENING AND TONIGHT. SOME STORMS MAY BE SEVERE THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A CHANCE OF THUNDERSTORMS ON SOUTHERN LAKE MICHIGAN THURSDAY...AND ON MUCH OF THE LAKE FRIDAY INTO EARLY SATURDAY. THERE WILL BE ANOTHER CHANCE OF THUNDERSTORMS ON SOUTHERN AND CENTRAL LAKE MICHIGAN MONDAY AND TUESDAY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO BMD
In the hours before
Local storm report, Jun 9, 1:12 AM CDT, 2 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
112 AM CDT THU JUN 09 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0837 PM TSTM WND DMG ROCKTON 42.45N 89.07W
06/08/2011 WINNEBAGO IL PUBLIC
SMALL LIMBS AND LEAVES DOWN
0837 PM TSTM WND DMG SOUTH BELOIT 42.48N 89.03W
06/08/2011 WINNEBAGO IL BROADCAST MEDIA
5 INCH BRANCH DOWN.
0845 PM TSTM WND DMG POPLAR GROVE 42.37N 88.82W
06/08/2011 BOONE IL TRAINED SPOTTER
A FEW SHINGLES BLOWN OF HOUSE. 6 FOOT ASH TREE, 3 IN DIA
TRUNK SNAPPED AT 1 FOOT ABOVE GROUND.
0845 PM TSTM WND GST MACHESNEY PARK 42.36N 89.04W
06/08/2011 M55.00 MPH WINNEBAGO IL TRAINED SPOTTER
0856 PM TSTM WND GST SOUTH BELOIT 42.48N 89.03W
06/08/2011 M55.00 MPH WINNEBAGO IL TRAINED SPOTTER
ROUTE 251 AND RALSTON ROAD. TEMP DROP 20 DEGREES.
0921 PM HAIL ROSCOE 42.42N 89.01W
06/08/2011 E0.50 INCH WINNEBAGO IL TRAINED SPOTTER
ROSCOE RD AND US251
0924 PM TSTM WND DMG SPRING GROVE 42.44N 88.24W
06/08/2011 MCHENRY IL TRAINED SPOTTER
ROUTE 12 AND WINNEBAGO ROAD JUST WEST OF INTERSECTION 20
TO 30 YEAR OLD TREE SNAPPED. TRUNK DIAMETER ESTIMATED AT
1 FOOT.
0953 PM TSTM WND DMG VERNON HILLS 42.24N 87.96W
06/08/2011 LAKE IL TRAINED SPOTTER
15 FT LONG- 3IN DIA BRANCH DOWN.
1003 PM HAIL WINNEBAGO 42.27N 89.24W
06/08/2011 E1.75 INCH WINNEBAGO IL BROADCAST MEDIA
AT WREX-TV STUDIOS.
1003 PM HAIL ROSCOE 42.42N 89.01W
06/08/2011 E0.50 INCH WINNEBAGO IL BROADCAST MEDIA
REPORTED BY CO-WORKER OF WTVO.
1004 PM TSTM WND DMG FORRESTON 42.13N 89.58W
06/08/2011 OGLE IL LAW ENFORCEMENT
TREES AND POWER LINES DOWN.
1004 PM TSTM WND DMG FORRESTON 42.13N 89.58W
06/08/2011 OGLE IL LAW ENFORCEMENT
POWER LINES AND TREES DOWN. REPORT RELAYED FROM OGLE
COUNTY SHERIFF. TIME ESTIMATED FROM RADAR.
1007 PM HAIL GRAYSLAKE 42.35N 88.04W
06/08/2011 E0.50 INCH LAKE IL TRAINED SPOTTER
WEST TRAIL RD AND PATRICIA COURT.
1010 PM TSTM WND GST POPLAR GROVE 42.37N 88.82W
06/08/2011 E60.00 MPH BOONE IL TRAINED SPOTTER
1011 PM TSTM WND GST ROCKFORD AIRPORT 42.20N 89.10W
06/08/2011 M60.00 MPH WINNEBAGO IL ASOS
1012 PM HAIL POPLAR GROVE 42.37N 88.82W
06/08/2011 E1.00 INCH BOONE IL COCORAHS
3/4 TO 1 INCH HAIL.
1012 PM HAIL POPLAR GROVE 42.37N 88.82W
06/08/2011 E1.00 INCH BOONE IL TRAINED SPOTTER
SIZE RANGED FROM PENNY TO QUARTER.
1015 PM HAIL BELVIDERE 42.25N 88.85W
06/08/2011 E0.50 INCH BOONE IL TRAINED SPOTTER
APPLETON RD AND EAST STATE ST.
1015 PM HAIL 1 NE BELVIDERE 42.26N 88.83W
06/08/2011 E0.50 INCH BOONE IL COCORAHS
1016 PM TSTM WND DMG BYRON 42.13N 89.26W
06/08/2011 OGLE IL LAW ENFORCEMENT
POWER LINES AND TREES DOWN.
1016 PM TSTM WND DMG BYRON 42.13N 89.26W
06/08/2011 OGLE IL LAW ENFORCEMENT
POWER LINES AND TREES DOWN. REPORT RELAYED FROM OGLE
COUNTY SHERIFF. TIME ESTIMATED FROM RADAR.
1020 PM FLOOD ROCKFORD 42.27N 89.06W
06/08/2011 WINNEBAGO IL TRAINED SPOTTER
8 TO 10 INCHES OF WATER DOWNTOWN AT W 8TH ST AND CORT ST.
1022 PM HAIL 3 S BELVIDERE 42.21N 88.85W
06/08/2011 E1.75 INCH BOONE IL TRAINED SPOTTER
ESTIMATED HAIL FROM MARBLE TO GOLFBALL IN SIZE. SPOTTER
WAS SOUTH OF BELVIDERE. WINDS ESTIMATED TO 45 MPH.
1022 PM HAIL BELVIDERE 42.25N 88.85W
06/08/2011 E1.75 INCH BOONE IL TRAINED SPOTTER
SOUTH OF BELVIDERE - MARBLE TO GOLF BALL SIZED HAIL. VIA
BROADCAST MEDIA.
1023 PM HAIL BELVIDERE 42.25N 88.85W
06/08/2011 E0.50 INCH BOONE IL PUBLIC
PUBLIC REPORT VIA BROADCAST MEDIA.
1029 PM HAIL POLO 41.98N 89.58W
06/08/2011 E1.00 INCH OGLE IL EMERGENCY MNGR
1033 PM TSTM WND DMG PLANO 41.66N 88.53W
06/08/2011 KENDALL IL LAW ENFORCEMENT
TREE LIMB ON CAR. TIME ESTIMATED BASED ON RADAR.
1040 PM HAIL 2 S WOODSTOCK 42.28N 88.44W
06/08/2011 E0.50 INCH MCHENRY IL TRAINED SPOTTER
1042 PM TSTM WND DMG MACHESNEY PARK 42.36N 89.04W
06/08/2011 WINNEBAGO IL TRAINED SPOTTER
6 IN DIA TREE SNAPPED. 7800 BLOCK OF HILDRED RD.
1050 PM TSTM WND DMG ROCKFORD 42.27N 89.06W
06/08/2011 WINNEBAGO IL TRAINED SPOTTER
6 IN DIA TREE SNAPPED. ALPINE RD AND HARRISON.
1050 PM TSTM WND GST 2 N PINGREE GROVE 42.10N 88.41W
06/08/2011 E50.00 MPH KANE IL EMERGENCY MNGR
REINKEN RD NORTHWEST OF IL72. ALSO PEA SIZE HAIL.
1051 PM TSTM WND DMG MACHESNEY PARK 42.36N 89.04W
06/08/2011 WINNEBAGO IL TRAINED SPOTTER
10 INCH DIA TREE DOWN. WILSON WATERVIEW. POSSIBLE
LIGHTNING DAMAGE.
1105 PM HAIL LAKE ZURICH 42.19N 88.09W
06/08/2011 E0.50 INCH LAKE IL TRAINED SPOTTER
AT ROUTE 12 AND ROUTE 22.
1116 PM HAIL 1 SE BARTLETT 41.97N 88.19W
06/08/2011 E0.25 INCH DUPAGE IL COCORAHS
1117 PM HAIL 2 N ELBURN 41.92N 88.47W
06/08/2011 E0.25 INCH KANE IL TRAINED SPOTTER
1121 PM HAIL FRANKLIN GROVE 41.84N 89.30W
06/08/2011 E0.88 INCH LEE IL EMERGENCY MNGR
1139 PM TSTM WND GST GLEN ELLYN 41.87N 88.06W
06/08/2011 M55.00 MPH DUPAGE IL TRAINED SPOTTER
1150 PM TSTM WND DMG PLANO 41.66N 88.53W
06/08/2011 KENDALL IL LAW ENFORCEMENT
TELEPHONE POLE SNAPPED. NEAR FOX RIVER DR.
1153 PM TSTM WND DMG 3 S SUGAR GROVE 41.73N 88.46W
06/08/2011 KANE IL LAW ENFORCEMENT
LARGE TREES DOWN - IL47 AND BASELINE RD.
1210 AM TSTM WND DMG LISBON 41.48N 88.48W
06/09/2011 KENDALL IL LAW ENFORCEMENT
TREE DOWN NEAR US52 AND LISBON RD.
1217 AM HAIL ELWOOD 41.41N 88.11W
06/09/2011 E0.25 INCH WILL IL TRAINED SPOTTER
NEAR BASELINE RE AND ARSENAL RD.
1240 AM HAIL BRADLEY 41.15N 87.86W
06/09/2011 E0.75 INCH KANKAKEE IL TRAINED SPOTTER
HAIL RANGED FROM 1/2 INCH TO 3/4 INCH.
&&
THIS REPORT WILL BE UPDATED IF ADDITIONAL STROM REPORTS ARE RECEIVED.
CMSpecial weather statement, Jun 9, 1:44 AM CDT, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 144 AM CDT THU JUN 9 2011 ILZ003>006-008-011-012-014-090730- BOONE IL-COOK IL-DE KALB IL-KANE IL-LAKE IL-MCHENRY IL-OGLE IL- WINNEBAGO IL- 144 AM CDT THU JUN 9 2011 ...SPECIAL WEATHER STATEMENT... AT 139 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF RAPIDLY DEVELOPING THUNDERSTORMS FROM KINGSTON SOUTHWEST TOWARDS DAVIS JUNCTION. THUNDERSTORMS ARE MOVING EAST AT 45 MPH. NICKEL SIZE HAIL AND BRIEF MODERATE DOWNPOURS ARE POSSIBLE WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... GENOA... KINGSTON... KIRKLAND... MARENGO... HAMPSHIRE... HUNTLEY... LAKEWOOD... LAKE IN THE HILLS... GILBERTS... SLEEPY HOLLOW... ALGONQUIN... BULL VALLEY... PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL CAN LEAD TO FLOODING OF LOW LYING AREAS SUCH AS DITCHES...VIADUCTS...UNDERPASSES...CREEKS AND DRAINAGE AREAS. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. LAT...LON 4237 8820 4210 8806 4199 8910 4211 8916 BMD
Special weather statement, Jun 9, 2:02 AM CDT, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
202 AM CDT THU JUN 9 2011
ILZ003-008-090745-
OGLE IL-WINNEBAGO IL-
202 AM CDT THU JUN 9 2011
...SPECIAL WEATHER STATEMENT...
AT 200 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM NEAR FORRESTON...MOVING EAST AT 35 MPH.
NICKEL SIZE HAIL AND HEAVY DOWNPOURS ARE POSSIBLE WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
FORRESTON... MOUNT MORRIS... PECATONICA...
BYRON... WINNEBAGO... ROCKFORD AIRPORT...
STILLMAN VALLEY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL CAN LEAD TO FLOODING OF LOW LYING AREAS SUCH AS
DITCHES...VIADUCTS...UNDERPASSES...CREEKS AND DRAINAGE AREAS. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.
LAT...LON 4220 8969 4221 8941 4234 8940 4241 8920
4213 8904 4198 8969 4220 8970
BMDSpecial weather statement, Jun 9, 2:30 AM CDT, 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
230 AM CDT THU JUN 9 2011
ILZ010-090800-
LEE IL-
230 AM CDT THU JUN 9 2011
...SPECIAL WEATHER STATEMENT...
AT 226 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG
THUNDERSTORM 15 MILES SOUTHWEST OF WALTON...MOVING EAST AT 35 MPH.
NICKEL SIZE HAIL AND BRIEF HEAVY DOWNPOURS ARE POSSIBLE WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
WALTON... AMBOY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL CAN LEAD TO FLOODING OF LOW LYING AREAS SUCH AS
DITCHES...VIADUCTS...UNDERPASSES...CREEKS AND DRAINAGE AREAS. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.
LAT...LON 4176 8931 4158 8927 4158 8950 4158 8963
4159 8964 4170 8964
BMDLocal storm report, Jun 9, 2:45 AM CDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
245 AM CDT THU JUN 09 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0242 AM HAIL ROMEOVILLE 41.65N 88.09W
06/09/2011 E0.25 INCH WILL IL OFFICIAL NWS OBS
&&
CMLocal storm report, Jun 9, 3:13 AM CDT, 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
313 AM CDT THU JUN 09 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 AM TSTM WND GST EVERGREEN PARK 41.72N 87.70W
06/09/2011 M58 MPH COOK IL FIRE DEPT/RESCUE
SUSTAINED WINDS 48-50 MPH WITH PEAK GUST TO 58 MPH. PEA
SIZED HAIL. 91ST AND CLIFTON PARK.
&&
RATZERThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 8:46 PM CDT | Special Weather Statement | LOT | Boone, McHenry | 29 min |
| Jun 8, 9:10 PM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry, Winnebago | 65 min |
| Jun 8, 9:12 PM CDT | Special Marine Warning | LOT | 2 hr | |
| Jun 8, 9:27 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 50 min |
| Jun 8, 9:47 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Lee, Ogle, Winnebago | 58 min |
| Jun 8, 9:55 PM CDT | Special Marine Warning | LOT | 95 min | |
| Jun 8, 10:14 PM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry, Winnebago | 61 min |
| Jun 8, 10:20 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, McHenry | 55 min |
| Jun 8, 10:30 PM CDT | Areal Flood Advisory | LOT | Boone, Lake, McHenry, Winnebago | 6 hr |
| Jun 8, 10:44 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Lee, Ogle, Winnebago | 61 min |
| Jun 8, 11:01 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Lake | 59 min |
| Jun 8, 11:15 PM CDT | Special Marine Warning | LOT | 60 min | |
| Jun 8, 11:30 PM CDT | Special Marine Warning | LOT | 60 min | |
| Jun 8, 11:43 PM CDT | Severe Thunderstorm Warning | LOT | Kendall | 47 min |
| Jun 8, 11:55 PM CDT | Areal Flood Advisory | LOT | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 7 more | 6 hr |
| Jun 9, 1:44 AM CDT | Special Weather Statement | LOT | McHenry | 46 min |
| Jun 9, 2:02 AM CDT | Special Weather Statement | LOT | Winnebago | 43 min |
| Jun 9, 2:30 AM CDT | Special Weather Statement | LOT | Lee | 30 min |
| Jun 9, 2:33 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kendall, Will | 57 min |
| Jun 9, 2:37 AM CDT | Special Marine Warning | LOT | 83 min | |
| Jun 9, 3:13 AM CDT | Severe Thunderstorm Warning | LOT | Cook | 37 min |
| Jun 9, 4:04 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle | 56 min |
| Jun 9, 4:05 AM CDT | Small Craft Advisory | LOT | 29 hr | |
| Jun 9, 4:17 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee, Ogle | 45 min |
| Jun 9, 5:33 AM CDT | Flash Flood Warning | LOT | Cook, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more | 6 hr |
| Jun 9, 6:00 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 60 min |
| Jun 9, 6:40 AM CDT | Areal Flood Advisory | LOT | Cook, DuPage | 5 hr |
| Jun 9, 7:53 AM CDT | Special Weather Statement | LOT | Grundy, Livingston, Will | 37 min |
| Jun 9, 10:28 AM CDT | River Flood Warning | LOT | Cook | 43 hr |
| Jun 9, 10:35 AM CDT | River Flood Warning | LOT | Bureau, LaSalle | 9 days |
| Jun 9, 10:41 AM CDT | River Flood Advisory | LOT | LaSalle | 5 hr |
| Jun 9, 11:11 AM CDT | River Flood Warning | LOT | Will | 34 hr |
| Jun 9, 11:11 AM CDT | River Flood Warning | LOT | Will | 43 hr |
| Jun 9, 11:26 AM CDT | Flash Flood Warning | LOT | Cook, DeKalb, DuPage, Grundy, Kane, Kankakee and 5 more | 6 hr |
| Jun 9, 2:14 PM CDT | River Flood Advisory | LOT | Cook | 32 hr |
| Jun 9, 2:59 PM CDT | River Flood Advisory | LOT | DeKalb | 18 hr |
| Jun 9, 3:08 PM CDT | River Flood Warning | LOT | LaSalle | 42 hr |
| Jun 9, 3:18 PM CDT | River Flood Advisory | LOT | Kane, Kendall | 42 hr |
| Jun 9, 3:18 PM CDT | River Flood Advisory | LOT | Kankakee | 7 hr |
| Jun 9, 3:18 PM CDT | River Flood Advisory | LOT | Cook | 31 hr |
| Jun 9, 3:24 PM CDT | Flash Flood Watch | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kankakee and 7 more | 17 hr |
| Jun 9, 3:54 PM CDT | River Flood Warning | LOT | Grundy | 43 hr |
| Jun 9, 3:54 PM CDT | River Flood Warning | LOT | LaSalle | 61 hr |
| Jun 9, 5:00 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 60 min |
| Jun 9, 5:09 PM CDT | Tornado Warning | LOT | Ford, Iroquois | 39 min |
| Jun 9, 5:52 PM CDT | Areal Flood Warning | LOT | Cook, DeKalb, DuPage, Kane, Kendall, LaSalle and 2 more | 24 hr |
| Jun 9, 9:21 AM CDT | Flash Flood Warning | LOT | Jasper, Lake, Porter | 2 hr |
| Jun 9, 9:56 AM CDT | Rip Current Statement | LOT | Lake, Porter | 18 hr |
| Jun 9, 10:28 AM CDT | River Flood Warning | LOT | Lake | 46 hr |
| Jun 9, 2:14 PM CDT | River Flood Advisory | LOT | Lake | 9 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.