Alert archive / Illinois / Flash Flood Warnings in 2014
Flash Flood Warning 13, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Jun 21, 2014, 7:02 PM CDT for Will County, Illinois. It was in force for 6 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
- Jun 21, 2014, 7:02 PM CDT (00:02 UTC)
- Expired
- Jun 22, 2014, 1:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Flood severity
- None
County Will County, IL
The radar
The Chicago radar (KLOT), 26 km from the middle of the area, began a volume at 00:04 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 21, 7:08 PM CDT | HEAVY RAIN 2.35 | 2 N Joliet, IL | STORM TOTAL 2.35 INCHES...BULK OF WHICH FELL IN 35-40 MINUTES. |
| Jun 21, 7:19 PM CDT | HEAVY RAIN 2.5 | 3 Ese Lockport, IL | RAINFALL SO FAR. MINOR FLOODING. |
| Jun 21, 7:24 PM CDT | HEAVY RAIN 2.43 | Peotone, IL | STORM TOTAL 2.43 INCHES WITH 1.26 INCHES IN THE PAST 30 MINUTES. |
| Jun 21, 7:42 PM CDT | HEAVY RAIN 2.68 | Peotone, IL | 2.68 INCHES OF RAINFALL SO FAR WITH 1.57 INCHES IN THE PAST HOUR. STILL RAINING. |
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, 0.0 hours before the alert went out and 152 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
- 11 J/kg
- Mixed-layer CIN
- -306 J/kg
- Mixed-layer LCL
- 1877 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 302 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
422
WGUS53 KLOT 220002
FFWLOT
ILC197-220600-
/O.NEW.KLOT.FF.W.0013.140622T0002Z-140622T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
702 PM CDT SAT JUN 21 2014
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WILL COUNTY IN NORTHEAST ILLINOIS...
* UNTIL 100 AM CDT
* AT 701 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH TORRENTIAL RAINFALL ACROSS THE
WARNED AREA. RAINFALL RATES OF UP TO ONE INCH IN 20 TO 30 MINUTES
ARE OCCURRING OVER PARTS OF THE WARNED AREA. IN EXCESS OF TWO
INCHES OF RAIN HAS ALREADY FALLEN IN SOME AREAS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHANNAHON...FRANKFORT...INGALLS PARK...JOLIET...LOCKPORT...
MOKENA...NEW LENOX...PEOTONE...STEGER...UNIVERSITY PARK...
WILMINGTON...BEECHER...BRAIDWOOD...CRETE AND ELWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO
CROSS A FLOWING STREAM... EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE.
&&
LAT...LON 4130 8794 4129 8801 4127 8802 4126 8825
4161 8826 4161 8791 4156 8791 4156 8779
4147 8779 4147 8752 4130 8753
$$
RC3 follow-up statements
168
WGUS73 KLOT 220038
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
738 PM CDT SAT JUN 21 2014
ILC197-220600-
/O.CON.KLOT.FF.W.0013.000000T0000Z-140622T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILL IL-
738 PM CDT SAT JUN 21 2014
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WILL COUNTY UNTIL 100 AM
CDT...
AT 734 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
TORRENTIAL RAINFALL ACROSS PARTS OF THE WARNED AREA. BASED ON
REPORTS AND RADAR ESTIMATES...UP TO 2 TO 3 INCHES OF RAIN HAVE
FALLEN ACROSS THE WARNED AREA. WEATHER SPOTTERS REPORTED THAT FLASH
FLOODING WAS OCCURRING NORTHEAST OF BEECHER ILLINOIS AROUND 7PM
CDT...WITH ONE FOOT OF FLOWING WATER ON OSSNER ROAD. FLOODING WAS
ALSO REPORTED IN JOLIET ON ROUTE 30.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CHANNAHON...
FRANKFORT...INGALLS PARK...JOLIET...LOCKPORT...MOKENA...NEW LENOX...
PEOTONE...STEGER...UNIVERSITY PARK...WILMINGTON...BEECHER...
BRAIDWOOD...CRETE AND ELWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.
&&
LAT...LON 4130 8794 4129 8801 4127 8802 4126 8825
4161 8826 4161 8791 4156 8791 4156 8779
4147 8779 4147 8752 4130 8753
$$
RC054
WGUS73 KLOT 220153
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
853 PM CDT SAT JUN 21 2014
ILC197-220600-
/O.CON.KLOT.FF.W.0013.000000T0000Z-140622T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILL IL-
853 PM CDT SAT JUN 21 2014
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WILL COUNTY UNTIL 100 AM
CDT...
AT 852 PM CDT...FLASH FLOODING WAS LIKELY STILL OCCURRING ACROSS
PORTIONS OF THE WARNED AREA DUE TO RUNOFF FROM THE TWO TO THREE
INCHES OF RAIN THAT FELL IN THUNDERSTORMS EARLIER THIS EVENING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CHANNAHON...
FRANKFORT...INGALLS PARK...JOLIET...LOCKPORT...MOKENA...NEW LENOX...
PEOTONE...STEGER...UNIVERSITY PARK...WILMINGTON...BEECHER...
BRAIDWOOD...CRETE AND ELWOOD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... UNDERPASSES AND LOW LYING AREAS.
MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.
&&
LAT...LON 4130 8794 4129 8801 4127 8802 4126 8825
4161 8826 4161 8791 4156 8791 4156 8779
4147 8779 4147 8752 4130 8753
$$
RC446
WGUS73 KLOT 220251
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
951 PM CDT SAT JUN 21 2014
ILC197-220306-
/O.CAN.KLOT.FF.W.0013.000000T0000Z-140622T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILL IL-
951 PM CDT SAT JUN 21 2014
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WILL COUNTY IS
CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE WIDESPREAD FLOOD THREAT. BE ALERT FOR LINGERING
AREAS OF PONDING ON ROADWAYS. IF FLOODING HAS BEEN OBSERVED...PLEASE
REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 4130 8794 4129 8801 4127 8802 4126 8825
4161 8826 4161 8791 4156 8791 4156 8779
4147 8779 4147 8752 4130 8753
$$
RCThe office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 7:12 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois, Kankakee | 53 min |
| Jun 21, 7:25 PM CDT | Areal Flood Advisory | LOT | Kankakee, Will | 6 hr |
| Jun 21, 8:22 PM CDT | River Flood Warning | LOT | Kane, Kendall | 17 hr |
| Jun 21, 8:32 PM CDT | River Flood Advisory | LOT | Will | 53 hr |
| Jun 22, 4:30 AM CDT | River Flood Advisory | LOT | Grundy | 41 hr |
| Jun 22, 5:27 AM CDT | River Flood Warning | LOT | Cook | 14 hr |
| Jun 22, 12:01 PM CDT | River Flood Warning | LOT | Bureau, LaSalle | 5 days |
| Jun 22, 3:21 PM CDT | River Flood Advisory | LOT | Grundy, Will | 36 hr |
Nearby
Flash Flood Warnings in Illinois, 2014Every flash flood warning in 2014
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.