Alert archive / Illinois / Flash Flood Warnings in 2009
Flash Flood Warning 21, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Jun 19, 2009, 6:00 PM CDT for 5 counties in Illinois. It was in force for 6 hr. 9 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 19, 2009, 6:00 PM CDT (23:00 UTC)
- Expired
- Jun 19, 2009, 11:34 PM CDT
- In force
- 6 hr
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cook County, IL, DuPage County, IL, Kane County, IL, Lake County, IL, McHenry County, IL
The radar
The Chicago radar (KLOT), 63 km from the middle of the area, began a volume at 23:01 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 19, 6:20 PM CDT | FLASH FLOOD | Gurnee, IL | GRAND AVE AT SKOKIE HWY CLOSED DUE TO FLOODING |
| Jun 19, 6:40 PM CDT | HEAVY RAIN 2 | Woodstock, IL | MESURED IN LAST HOUR. |
| Jun 19, 6:57 PM CDT | FLASH FLOOD | 1 Se Ohare Airport, IL | N MANNHEIM RD BETWEEN I190 AND IRVING PARK RD CLOSED DUE TO FLOODING...SOUTHBOUND TRAFFIC BEING DIVERTED THROUGH OHARE AIRPORT |
| Jun 19, 6:57 PM CDT | FLASH FLOOD | Bartlett, IL | HWY 59 AT BARTLETT RD BLOCKED DUE TO FLOODING |
| Jun 19, 6:57 PM CDT | FLASH FLOOD | Mount Prospect, IL | ELMHURST RD BETWEEN DEMPSTER ST AND W OAKTON ST CLOSED DUE TO FLOODING |
| Jun 19, 7:00 PM CDT | HEAVY RAIN 1.13 | 3 W Grayslake, IL | MEASURED IN LAST HOUR. |
| Jun 19, 7:32 PM CDT | FLASH FLOOD | Vernon Hills, IL | NUMEROUS STREETS FLOODED. WATER DEPTH 6-8 INCHES. |
| Jun 19, 8:00 PM CDT | HEAVY RAIN 2.88 | 1 N Evanston, IL | 2.88 INCHES SO FAR WITH 1.00 INCH IN PAST 45 MINUTES. COCORAHS OBSERVER |
| Jun 19, 8:17 PM CDT | HEAVY RAIN 2.01 | 1 W Gurnee, IL | 2.01 INCHES IN THE PAST TWO HOURS. SOME STREET FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.0 hours before the alert went out and 215 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
- 2575 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 810 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 10.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS53 KLOT 192300
FFWLOT
ILC031-043-089-097-111-200500-
/O.NEW.KLOT.FF.W.0021.090619T2300Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 PM CDT FRI JUN 19 2009
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
KANE COUNTY IN NORTHEAST ILLINOIS...
LAKE COUNTY IN NORTHEAST ILLINOIS...
MCHENRY COUNTY IN NORTHEAST ILLINOIS...
* UNTIL MIDNIGHT CDT SATURDAY...
* AT 558 PM CDT...VERY HEAVY RAIN WAS REPORTED FROM A THUNDERSTORM
OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SKOKIE...
ELGIN...WILMETTE HARBOR...WOODSTOCK...WONDER LAKE...WINTHROP
HARBOR...WILMETTE...WHEELING...WAUKEGAN...WAUCONDA...WADSWORTH...
VERNON HILLS...RICHMOND...PRAIRIE GROVE... PALATINE...
NORTHFIELD...NORTHBROOK...NORTH CHICAGO... MCHENRY...
MARENGO...LONG GROVE...LINDENHURST...LINCOLNSHIRE...
LIBERTYVILLE...LAKEWOOD...LAKEMOOR...LAKE ZURICH...LAKE FOREST...
HUNTLEY...HIGHLAND PARK...HEBRON...HARVARD...HAMPSHIRE...GURNEE...
GRAYSLAKE...GLENVIEW...GLENCOE...GILBERTS...FOX LAKE...
CARPENTERSVILLE...BUFFALO GROVE...BARRINGTON...ARLINGTON HEIGHTS...
ANTIOCH AND ALGONQUIN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
PEOPLE ALONG CREEKS AND STREAMS SHOULD TAKE IMMEDIATE ACTION TO
PROTECT LIFE AND PROPERTY. DO NOT DRIVE ACROSS FLOODED ROADS.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CHICAGO.
HEAVY RAIN WILL RESULT IN FLOODING OF ROADS...VIADUCTS...
UNDERPASSES...CREEKS AND DRAINAGE AREAS. DO NOT DRIVE INTO FLOODED
AREAS AND KEEP CHILDREN AWAY FROM FLOOD WATERS.
&&
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$
BRUMER6 follow-up statements
000
WGUS53 KLOT 192304 CCA
FFWLOT
ILC031-043-089-097-111-200500-
/O.COR.KLOT.FF.W.0021.090619T2300Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 PM CDT FRI JUN 19 2009
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
KANE COUNTY IN NORTHEAST ILLINOIS...
LAKE COUNTY IN NORTHEAST ILLINOIS...
MCHENRY COUNTY IN NORTHEAST ILLINOIS...
* UNTIL MIDNIGHT CDT SATURDAY...
* AT 558 PM CDT...ANOTHER AREA OF STORMS IS MOVING INTO NORTHEAST
ILLINOIS AND WILL ADD ADDITIONAL RAINFALL TO AREAS ALREADY INUNDATED
WITH RAIN FROM THIS MORNINGS STORMS. THIS FLASH FLOOD WARNING
REPLACES THE FLOOD ADVISORY ALREADY IN EFFECT THROUGH 800 PM CDT.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SKOKIE...
ELGIN...WILMETTE HARBOR...WOODSTOCK...WONDER LAKE...WINTHROP
HARBOR...WILMETTE...WHEELING...WAUKEGAN...WAUCONDA...WADSWORTH...
VERNON HILLS...RICHMOND...PRAIRIE GROVE... PALATINE...
NORTHFIELD...NORTHBROOK...NORTH CHICAGO... MCHENRY...
MARENGO...LONG GROVE...LINDENHURST...LINCOLNSHIRE...
LIBERTYVILLE...LAKEWOOD...LAKEMOOR...LAKE ZURICH...LAKE FOREST...
HUNTLEY...HIGHLAND PARK...HEBRON...HARVARD...HAMPSHIRE...GURNEE...
GRAYSLAKE...GLENVIEW...GLENCOE...GILBERTS...FOX LAKE...
CARPENTERSVILLE...BUFFALO GROVE...BARRINGTON...ARLINGTON HEIGHTS...
ANTIOCH AND ALGONQUIN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
PEOPLE ALONG CREEKS AND STREAMS SHOULD TAKE IMMEDIATE ACTION TO
PROTECT LIFE AND PROPERTY. DO NOT DRIVE ACROSS FLOODED ROADS.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CHICAGO.
HEAVY RAIN WILL RESULT IN FLOODING OF ROADS...VIADUCTS...
UNDERPASSES...CREEKS AND DRAINAGE AREAS. DO NOT DRIVE INTO FLOODED
AREAS AND KEEP CHILDREN AWAY FROM FLOOD WATERS.
&&
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$
BRUMER000
WGUS73 KLOT 200005
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
705 PM CDT FRI JUN 19 2009
ILC031-043-089-097-111-200500-
/O.CON.KLOT.FF.W.0021.000000T0000Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-COOK IL-KANE IL-DUPAGE IL-
705 PM CDT FRI JUN 19 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
DUPAGE...KANE...NORTHERN COOK...LAKE AND MCHENRY COUNTIES...
AT 658 PM CDT...NATIONAL WEATHER SERVICE RADAR CONTINUED TO INDICATE
AREAS OF THUNDERSTORMS PRODUCING HEAVY RAIN MOVING THROUGH THE
WARNED AREA. WITH SATURATED GROUND FROM EARLIER RAINS ALONG WITH
THESE NEW DELUGES...FLASH FLOODING WILL BE A CERTAINTY IN MANY PARTS
OF NORTHEAST ILLINOIS. NEW RAINFALL AMOUNTS OF AT LEAST 1 TO 2 INCHES
CAN BE EXPECTED WITH THESE STORMS.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CHICAGO.
DO NOT LET CHILDREN PLAY IN FLOOD SWOLLEN CREEKS...STREAMS...DRAINAGE
DITCHES...CULVERTS...OR RETENTION PONDS WHERE POWERFUL CURRENTS MAY
EXIST.
HEAVY RAIN WILL RESULT IN FLOODING OF ROADS...VIADUCTS...
UNDERPASSES...CREEKS AND DRAINAGE AREAS. DO NOT DRIVE INTO FLOODED
AREAS AND KEEP CHILDREN AWAY FROM FLOOD WATERS.
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$000
WGUS73 KLOT 200102
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
802 PM CDT FRI JUN 19 2009
ILC031-043-089-097-111-200500-
/O.CON.KLOT.FF.W.0021.000000T0000Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-COOK IL-KANE IL-DUPAGE IL-
802 PM CDT FRI JUN 19 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
DUPAGE...KANE...NORTHERN COOK...LAKE AND MCHENRY COUNTIES...
AT 757 PM CDT...THE LAST OF THE HEAVIER RAINS IS MOVING THROUGH
NORTHEAST ILLINOIS. MOST OF THE RAINS...RESULTING IN SOME OF THE
WORST FLOODING...OCCURRED IN MCHENRY AND LAKE COUNTIES. AN INCH OR
LESS FELL ACROSS DUPAGE AND COOK COUNTIES...ADDING TO ONGOING
FLOODING OR SLOWING THE RECEDING OF EARLIER FLOOD WATERS. AN END TO
THE RAIN SHOULD OCCUR ACROSS NORTHEAST ILLINOIS BY 830 PM. HOWEVER
IT WILL TAKE HOURS FOR FLOOD WATERS TO RECEDE EVEN AFTER THE RAIN
ENDS.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CHICAGO.
DO NOT LET CHILDREN PLAY IN FLOOD SWOLLEN CREEKS...STREAMS...DRAINAGE
DITCHES...CULVERTS...OR RETENTION PONDS WHERE POWERFUL CURRENTS MAY
EXIST.
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$
BRUMER000
WGUS73 KLOT 200157
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
857 PM CDT FRI JUN 19 2009
ILC031-043-089-097-111-200500-
/O.CON.KLOT.FF.W.0021.000000T0000Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-COOK IL-KANE IL-DUPAGE IL-
857 PM CDT FRI JUN 19 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
DUPAGE...KANE...NORTHERN COOK...LAKE AND MCHENRY COUNTIES...
AT 856 PM CDT...SIGNIFICANT RAIN HAS ENDED ACROSS NORTHEAST
ILLINOIS. HOWEVER IT WILL BE SEVERAL HOURS BEFORE FLOOD WATERS
RECEDE.
UNTIL THEN...BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS MORE
DIFFICULT TO SEE WATER ON THE ROAD OR JUDGE HOW DEEP IT IS.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ROMEOVILLE.
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$
BRUMER000
WGUS73 KLOT 200257
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
957 PM CDT FRI JUN 19 2009
ILC031-043-089-097-111-200500-
/O.CON.KLOT.FF.W.0021.000000T0000Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-COOK IL-KANE IL-DUPAGE IL-
957 PM CDT FRI JUN 19 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
DUPAGE...KANE...NORTHERN COOK...LAKE AND MCHENRY COUNTIES...
THUNDERSTORMS WHICH PRODUCED HEAVY RAINFALL ACROSS NORTHEAST
ILLINOIS EARLIER THIS EVENING HAVE MOVED TO THE EAST AND OUT OF THE
AREA. HOWEVER...RUNOFF FROM EARLIER HEAVY RAINFALL WILL CONTINUE TO
PRODUCE FLOODING ACROSS NORTHEAST ILLINOIS FOR THE NEXT SEVERAL
HOURS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS MORE DIFFICULT TO SEE
WATER ON THE ROAD OR JUDGE HOW DEEP IT IS.
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$
RATZER000
WGUS73 KLOT 200434
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1134 PM CDT FRI JUN 19 2009
ILC031-043-089-097-111-200442-
/O.CAN.KLOT.FF.W.0021.000000T0000Z-090620T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-COOK IL-KANE IL-DUPAGE IL-
1134 PM CDT FRI JUN 19 2009
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR DUPAGE...KANE...
NORTHERN COOK...LAKE AND MCHENRY COUNTIES...
HEAVY RAIN HAS ENDED AND THE THREAT OF FLASH FLOODING HAS
DIMINISHED. HOWEVER...FLOODING OF CREEKS...SMALL STREAMS...AND LOW
LYING AREAS WILL CONTINUE OVERNIGHT. AN AREAL FLOOD WARNING IS NOW
IN EFFECT FOR PART OF NORTH CENTRAL AND NORTHEAST ILLINOIS UNTIL 930
AM.
LAT...LON 4239 8780 4232 8783 4224 8781 4211 8773
4206 8766 4185 8761 4175 8754 4174 8860
4216 8859 4216 8871 4249 8870 4249 8779
$$
ALLSOPPThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 1:13 AM CDT | Special Marine Warning | LOT | 2 hr | |
| Jun 19, 1:27 AM CDT | Severe Thunderstorm Warning | LOT | Boone, Lake, McHenry, Winnebago | 63 min |
| Jun 19, 2:02 AM CDT | Special Marine Warning | LOT | 118 min | |
| Jun 19, 4:42 AM CDT | Special Marine Warning | LOT | 77 min | |
| Jun 19, 4:48 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Lake | 24 min |
| Jun 19, 7:49 AM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry, Winnebago | 45 min |
| Jun 19, 8:01 AM CDT | Special Marine Warning | LOT | 89 min | |
| Jun 19, 8:31 AM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry | 47 min |
| Jun 19, 8:55 AM CDT | Tornado Warning | LOT | Kane, McHenry | 22 min |
| Jun 19, 9:17 AM CDT | Flash Flood Warning | LOT | Boone, DeKalb, Kane, McHenry, Ogle, Winnebago | 4 hr |
| Jun 19, 9:31 AM CDT | Special Marine Warning | LOT | 119 min | |
| Jun 19, 9:35 AM CDT | Severe Thunderstorm Warning | LOT | Boone, Ogle, Winnebago | 70 min |
| Jun 19, 9:46 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Lake | 29 min |
| Jun 19, 10:01 AM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane | 42 min |
| Jun 19, 10:03 AM CDT | Flash Flood Warning | LOT | Cook, DuPage, Lake | 4 hr |
| Jun 19, 10:04 AM CDT | River Flood Warning | LOT | Lake | 9 days |
| Jun 19, 10:10 AM CDT | River Flood Advisory | LOT | Cook | 2 hr |
| Jun 19, 10:12 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee, Ogle | 63 min |
| Jun 19, 10:28 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 47 min |
| Jun 19, 10:57 AM CDT | Special Marine Warning | LOT | 115 min | |
| Jun 19, 11:07 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Kane, Lake, McHenry | 53 min |
| Jun 19, 11:23 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DeKalb, DuPage, Kane | 67 min |
| Jun 19, 11:29 AM CDT | Special Marine Warning | LOT | 80 min | |
| Jun 19, 12:25 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 50 min |
| Jun 19, 12:27 PM CDT | River Flood Warning | LOT | Cook | 8 days |
| Jun 19, 1:08 PM CDT | Flash Flood Watch | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more | 8 hr |
| Jun 19, 2:13 PM CDT | River Flood Warning | LOT | Cook | 53 hr |
| Jun 19, 2:41 PM CDT | Special Marine Warning | LOT | 53 min | |
| Jun 19, 4:35 PM CDT | River Flood Advisory | LOT | Boone | 4 days |
| Jun 19, 5:36 PM CDT | Flash Flood Warning | LOT | Boone, DeKalb, Lee, Ogle, Winnebago | 6 hr |
| Jun 19, 5:46 PM CDT | Tornado Warning | LOT | Boone | 29 min |
| Jun 19, 5:49 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Ford, Grundy, Kane, Kendall, LaSalle and 2 more | 41 min |
| Jun 19, 6:00 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 32 min |
| Jun 19, 6:03 PM CDT | Special Marine Warning | LOT | 87 min | |
| Jun 19, 6:05 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 55 min |
| Jun 19, 6:12 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Lee, Ogle, Winnebago | 63 min |
| Jun 19, 6:16 PM CDT | Tornado Warning | LOT | Ford, Iroquois | 35 min |
| Jun 19, 6:23 PM CDT | Special Marine Warning | LOT | 112 min | |
| Jun 19, 6:23 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 7 more | 52 min |
| Jun 19, 6:28 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Lake, McHenry | 29 min |
| Jun 19, 6:38 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Grundy, Kendall, LaSalle, Lee, Livingston | 67 min |
| Jun 19, 6:56 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Iroquois, Kankakee, Will | 94 min |
| Jun 19, 6:56 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Cook, DeKalb, DuPage, Kane, Lake and 1 more | 43 min |
Nearby
Flash Flood Warnings in Illinois, 2009Every flash flood warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.