Alert archive / Illinois / Flash Flood Warnings in 2012
Flash Flood Warning 9, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at May 7, 2012, 12:26 AM CDT for Ford County, Iroquois County, Kankakee County, Illinois. It was in force for 7 hr. 4 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
- May 7, 2012, 12:26 AM CDT (05:26 UTC)
- Expired
- May 7, 2012, 7:12 AM CDT
- In force
- 7 hr
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ford County, IL, Iroquois County, IL, Kankakee County, IL
The radar
The Chicago radar (KLOT), 72 km from the middle of the area, began a volume at 05:29 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 |
|---|---|---|---|
| May 7, 1:30 AM CDT | FLASH FLOOD | Cabery, IL | IN AND AROUND CABERRY MULTIPLE ROADWAYS HAD SIGNATURES THAT THE WATER HAD COME UP QUICKLY AND ENCOMPASSED THE ROADS WITH FIELD AND MUD DEBRIS. IL HIGHWAY 115 WAS ONE OF THE COVERED ROADS. START TIME ESTIMATED PER RADAR. |
| May 7, 3:00 AM CDT | FLOOD | 1 E Cabery, IL | ALMOST ALL FIELDS FLOODED. ONE CREEK OVER A ROADWAY JUST EAST OF CABERRY NUMEROUS HOURS AFTER THE HEAVIEST OF RAINFALL. |
| May 7, 3:30 AM CDT | FLOOD | 1 Ne Danforth, IL | OLD US HIGHWAY 45 WAS COVERED WITH WATER AND REMAINED AS SUCH AT LEAST INTO THE AFTERNOON. NUMEROUS FIELDS IN THE AREA WERE ALSO FLOODED. START TIME ESTIMATED PER RADAR. ORIGINAL REPORT RELAYED BY IDOT HOURS AFTER THE RAIN. |
| May 7, 6:45 AM CDT | FLASH FLOOD | Cabery, IL | HIGH WATER ON RT. 115 NEAR CABERY. START TIME OF FLOODING UNKNOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 5.4 hours before the alert went out and 106 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
- 1208 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1947 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
621 WGUS53 KLOT 070526 FFWLOT ILC053-075-091-071330- /O.NEW.KLOT.FF.W.0009.120507T0526Z-120507T1330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1226 AM CDT MON MAY 7 2012 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A * FLASH FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN... KANKAKEE COUNTY IN NORTHEAST ILLINOIS... NORTH CENTRAL FORD COUNTY IN EAST CENTRAL ILLINOIS... NORTHERN IROQUOIS COUNTY IN EAST CENTRAL ILLINOIS... * UNTIL 830 AM CDT * AT 1219 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING INTO THE WARNED AREA. DOPPLER RADAR INDICATES THAT THESE STORMS WILL BE CAPABLE OF PRODUCING 1 TO 2 INCHES OF ADDITIONAL RAINFALL OVER THE NEXT 1 TO 2 HOURS. AREAS THAT RECEIVED HEAVY RAINFALL EARLIER WILL BE AFFECTED. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BOURBONNAIS...BRADLEY...KANKAKEE...MOMENCE...AROMA PARK...ASHKUM... CHEBANSE...CLIFTON...HERSCHER...HOPKINS PARK AND ST. ANNE. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 4081 8824 4119 8825 4120 8753 4081 8753 $$ MDB
4 follow-up statements
818 WGUS73 KLOT 070621 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 121 AM CDT MON MAY 7 2012 ILC053-075-091-071330- /O.CON.KLOT.FF.W.0009.000000T0000Z-120507T1330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANKAKEE IL-IROQUOIS IL-FORD IL- 121 AM CDT MON MAY 7 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTH CENTRAL FORD... NORTHERN IROQUOIS AND KANKAKEE COUNTIES UNTIL 830 AM CDT... AT 116 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATES THAT AROUND AN INCH OF RAIN HAS FALLEN IN THE LAST HOUR ACROSS CENTRAL AND SOUTHERN KANKAKEE COUNTY AND EXTREME NORTHERN FORD COUNTY. HEAVY RAIN WILL CONTINUE ACROSS KANKAKEE AND NORTHERN FORD COUNTIES AND SPREAD INTO NORTHERN IROQUOIS COUNTY OVER THE NEXT 1 TO 2 HOURS. AN ADDITIONAL 1 TO 2 INCHES OF RAIN IS LIKELY IN THIS TIME BEYOND WHAT HAS ALREADY FALLEN. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BOURBONNAIS...BRADLEY...KANKAKEE...MOMENCE...AROMA PARK...ASHKUM... CHEBANSE...CLIFTON...HERSCHER...HOPKINS PARK AND ST. ANNE. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BOURBONNAIS... BRADLEY...KANKAKEE...MOMENCE...AROMA PARK...ASHKUM...CHEBANSE... CLIFTON...HERSCHER...HOPKINS PARK AND ST. ANNE. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 4081 8824 4119 8825 4120 8753 4081 8753 $$ MDB
243 WGUS73 KLOT 070736 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 236 AM CDT MON MAY 7 2012 ILC053-075-091-071330- /O.CON.KLOT.FF.W.0009.000000T0000Z-120507T1330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANKAKEE IL-IROQUOIS IL-FORD IL- 236 AM CDT MON MAY 7 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTH CENTRAL FORD... NORTHERN IROQUOIS AND KANKAKEE COUNTIES UNTIL 830 AM CDT... AT 235 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR INDICATES THAT 1 TO 2 INCHES HAS FALLEN ACROSS NORTHERN FORD AND NORTHERN IROQUOIS COUNTIES AND FAR SOUTHERN KANKAKEE COUNTY IN THE LAST HOUR. THUNDERSTORMS CONTINUE TO RE-DEVELOP ACROSS THE AREA AND AN ADDITIONAL 1 TO 2 INCHES OF RAIN COULD FALL IN SPOTS. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BOURBONNAIS...BRADLEY...KANKAKEE...MOMENCE...AROMA PARK...ASHKUM... CHEBANSE...CLIFTON...HERSCHER...HOPKINS PARK AND ST. ANNE. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 4081 8824 4119 8825 4120 8753 4081 8753 $$ MDB
556 WGUS73 KLOT 070927 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 427 AM CDT MON MAY 7 2012 ILC053-075-091-071330- /O.CON.KLOT.FF.W.0009.000000T0000Z-120507T1330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANKAKEE IL-IROQUOIS IL-FORD IL- 427 AM CDT MON MAY 7 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTH CENTRAL FORD... NORTHERN IROQUOIS AND KANKAKEE COUNTIES UNTIL 830 AM CDT... AT 423 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SCATTERED LIGHT TO MODERATE SHOWERS AND THUNDERSTORMS ACROSS THE WARNED AREA. RADAR ESTIMATES THAT 1 TO 3 INCHES OF RAIN...WITH LOCALIZED AMOUNTS OF AROUND 4 INCHES...HAS FALLEN OVER THE LAST 3 HOURS. ADDITIONAL SHOWERS AND THUNDERSTORMS ARE APPROACHING FROM THE WEST AND SOUTHWEST WHICH WILL BRING LIGHT TO MODERATE RAIN...WITH BRIEF HEAVY DOWNPOURS AT TIMES. AN ADDITIONAL ONE HALF TO ONE INCH OF RAIN IS POSSIBLE THROUGH MID MORNING WITH ISOLATED HIGHER AMOUNTS. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... BOURBONNAIS...BRADLEY...KANKAKEE...MOMENCE...AROMA PARK...ASHKUM... CHEBANSE...CLIFTON...HERSCHER...HOPKINS PARK AND ST. ANNE. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 4081 8824 4119 8825 4120 8753 4081 8753 $$ MDB
293 WGUS73 KLOT 071212 FFSLOT FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 712 AM CDT MON MAY 7 2012 ILC053-075-091-071221- /O.CAN.KLOT.FF.W.0009.000000T0000Z-120507T1330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KANKAKEE IL-IROQUOIS IL-FORD IL- 712 AM CDT MON MAY 7 2012 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTH CENTRAL FORD...NORTHERN IROQUOIS AND KANKAKEE COUNTIES IS CANCELLED AND HAS BEEN REPLACED BY AN AREAL FLOOD WARNING DUE TO ONGOING FLOODING AND MINIMAL ADDITIONAL RAINFALL... LAT...LON 4081 8824 4119 8825 4120 8753 4081 8753 $$ MDB
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 9:01 PM CDT | Special Weather Statement | LOT | Cook | 59 min |
| May 6, 9:23 PM CDT | River Flood Watch | LOT | Lake | 13 hr |
| May 6, 9:40 PM CDT | River Flood Advisory | LOT | Will | 24 hr |
| May 6, 9:40 PM CDT | River Flood Advisory | LOT | Iroquois | 67 hr |
| May 6, 9:55 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Will | 50 min |
| May 6, 10:32 PM CDT | Special Weather Statement | LOT | Cook | 43 min |
| May 6, 10:35 PM CDT | Special Weather Statement | LOT | Cook | 40 min |
| May 6, 10:58 PM CDT | Areal Flood Advisory | LOT | DeKalb, LaSalle, Lee | 6 hr |
| May 6, 11:09 PM CDT | Special Weather Statement | LOT | Grundy | 36 min |
| May 6, 11:22 PM CDT | Flash Flood Warning | LOT | Grundy, Kendall, LaSalle, Livingston | 8 hr |
| May 6, 11:24 PM CDT | Flash Flood Warning | LOT | Cook, Grundy, Kankakee, Kendall, Will | 6 hr |
| May 7, 1:43 AM CDT | Flash Flood Warning | LOT | Iroquois | 6 hr |
| May 7, 2:02 AM CDT | River Flood Advisory | LOT | Kane, Kendall | 8 hr |
| May 7, 3:56 AM CDT | Flash Flood Warning | LOT | Ford, Livingston | 4 hr |
| May 7, 5:05 AM CDT | Areal Flood Advisory | LOT | DeKalb, LaSalle, Lee | 2 hr |
| May 7, 5:42 AM CDT | Areal Flood Warning | LOT | Grundy, Kankakee, Will | 12 hr |
| May 7, 6:15 AM CDT | River Flood Warning | LOT | Bureau, LaSalle | 5 days |
| May 7, 6:23 AM CDT | River Flood Advisory | LOT | Grundy | 16 hr |
| May 7, 6:23 AM CDT | River Flood Advisory | LOT | LaSalle | 16 hr |
| May 7, 7:00 AM CDT | Areal Flood Warning | LOT | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston | 22 hr |
| May 7, 8:18 AM CDT | River Flood Warning | LOT | LaSalle | 9 hr |
| May 7, 10:06 AM CDT | River Flood Advisory | LOT | Grundy, Will | 68 hr |
| May 7, 10:06 AM CDT | River Flood Advisory | LOT | Grundy | 8 hr |
| May 7, 3:36 PM CDT | River Flood Advisory | LOT | Iroquois | 7 hr |
| May 7, 5:30 PM CDT | River Flood Warning | LOT | Grundy | 28 hr |
| May 7, 5:31 PM CDT | Areal Flood Warning | LOT | Grundy, Kankakee, Will | 12 hr |
Nearby
Flash Flood Warnings in Illinois, 2012Every flash flood warning in 2012
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.