Alert archive / Illinois / Flash Flood Warnings in 2013

Flash Flood Warning 21, NWS Chicago, IL

June 26, 20134 counties in Illinois

NWS Chicago, IL issued this flash flood warning at Jun 26, 2013, 5:26 AM CDT for 4 counties in Illinois. It was in force for 6 hr. 26 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 26, 2013, 5:26 AM CDT (10:26 UTC)
Expired: Jun 26, 2013, 11:30 AM CDT
In force: 6 hr
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Flood severity: None

Counties Boone County, IL, Cook County, IL, Lake County, IL, McHenry County, IL

The radar

The Chicago radar (KLOT), 67 km from the middle of the area, began a volume at 10:28 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 26, 5:35 AM CDT	HEAVY RAIN 2.79	Woodstock, IL	24 HOUR TOTAL WITH MOST OF IT THIS MORNING. WATER COVERING STREETS OF DOWNSTOWN WOODSTOCK ABOUT 3 INCHES DEEP AT THIS TIME.
Jun 26, 5:39 AM CDT	FLASH FLOOD	5 Wnw Arlington Heights, IL	U.S. 14 BETWEEN U.S. 59 AND LAKE COOK RD CLOSED
Jun 26, 5:59 AM CDT	FLASH FLOOD	1 S Mchenry, IL	ENTIRE ROADS COVERED WITH THREE TO FOUR INCHES OF WATER...FLOWING IN PLACES. SOME AREAS IMPASSABLE. ON RTE 31 SOUTH OF MCHENRY.
Jun 26, 6:25 AM CDT	FLASH FLOOD	5 Nw Evanston, IL	SHERMER RD CLOSED AT WEST LAKE AVE
Jun 26, 6:30 AM CDT	HEAVY RAIN 2.58	1 N Lincolnshire, IL	24 HOUR TOTAL
Jun 26, 6:41 AM CDT	HEAVY RAIN 4.5	Crystal Lake, IL	24 HOUR TOTAL
Jun 26, 6:51 AM CDT	HEAVY RAIN 5.31	Lake Zurich, IL	24 HOUR TOTAL. RELAYED VIA FACEBOOK.
Jun 26, 6:54 AM CDT	HEAVY RAIN 5.29	2 Ne Mchenry, IL	MOST FELL BETWEEN 3AM AND 6AM.
Jun 26, 6:57 AM CDT	HEAVY RAIN 4.2	Wheeling, IL	BETWEEN 4AM AND 7AM
Jun 26, 7:00 AM CDT	HEAVY RAIN 2.56	Mundelein, IL
Jun 26, 7:00 AM CDT	HEAVY RAIN 6	4 Ne Algonquin, IL	RAIN IN PAST 2 HOURS
Jun 26, 7:03 AM CDT	FLASH FLOOD	2 N Lake Forest, IL	U.S. 41 FLOODED AND CLOSED AT GAGE AVE. VIA WBBM780 TRAFFIC WEBSITE
Jun 26, 7:04 AM CDT	HEAVY RAIN 3.65	Arlington Heights, IL	SINCE 4 AM. HINTZ RD AND WINDSOR.
Jun 26, 7:11 AM CDT	FLASH FLOOD	4 Nw Barrington, IL	U.S. ROUTE 22 HALF DAY RD CLOSED AT KELSEY AVE. VIA WBBM780 TRAFFIC WEBSITE
Jun 26, 7:18 AM CDT	FLASH FLOOD	5 Se Arlington Heights, IL	WOLF RD CLOSED AT HWY 58/GOLF RD. VIA WBBM 780 WEBSITE
Jun 26, 7:30 AM CDT	FLASH FLOOD	5 Ene Algonquin, IL	DEMPSTER CLOSED BETWEEN WAUKEGAN RD AND HARLEM. VIA WBBM 780 TRAFFIC WEBSITE
Jun 26, 7:35 AM CDT	HEAVY RAIN 3.1	Island Lake, IL	24 HOUR TOTAL
Jun 26, 7:59 AM CDT	FLOOD	1 E Des Plaines, IL	APPROX 1 FT STANDING WATER AT INTERSECTION OF DEMPSTER ST AND DEE RD.
Jun 26, 8:00 AM CDT	HEAVY RAIN 4.72	Woodstock, IL	STORM TOTAL. 2.79 INCHES 24 HOURS ENDING 530 AM CDT. ADDITIONAL 1.93 INCHES AFTER 530 AM THIS MORNING.
Jun 26, 8:18 AM CDT	HEAVY RAIN 3.71	Arlington Heights, IL
Jun 26, 8:53 AM CDT	FLASH FLOOD	Park Ridge, IL	STANDING WATER ON MAYFIELD DR
Jun 26, 9:14 AM CDT	FLASH FLOOD	2 Ne Des Plaines, IL	GOLF RD CLOSED BETWEEN RIVER RD AND THE TRI STATE TOLLWAY
Jun 26, 9:40 AM CDT	FLOOD	Northbrook, IL	LAKE COOK RD AND LEE RD. HIGH STANDING WATER 4 INCHES DEEP.
Jun 26, 9:43 AM CDT	FLASH FLOOD	2 Ne Barrington, IL	CUBA RD CLOSED AT ELA RD. VIA WBBM 780 WEBSITE
Jun 26, 9:55 AM CDT	FLASH FLOOD	4 Wsw Island Lake, IL	ROUTE 176 EAST AT KNAACK CLOSED DUE TO FLOODING. VIA WBBM 780 WEBSITE
Jun 26, 10:40 AM CDT	FLASH FLOOD	5 Ne Arlington Heights, IL	WOLF RD CLOSED AT DUNDEE RD. REPORT VIA WBBM 780 WEBSITE

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 00:00Z, 10.4 hours before the alert went out and 209 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2162 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

585 
WGUS53 KLOT 261026
FFWLOT
ILC007-031-097-111-261630-
/O.NEW.KLOT.FF.W.0021.130626T1026Z-130626T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
526 AM CDT WED JUN 26 2013

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* FLASH FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
  EASTERN BOONE COUNTY IN NORTH CENTRAL ILLINOIS...
  LAKE COUNTY IN NORTHEAST ILLINOIS...
  MCHENRY COUNTY IN NORTHEAST ILLINOIS...
  NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 1130 AM CDT

* AT 524 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RADAR ESTIMATES OF IN EXCESS OF 3 INCHES OF RAIN HAS  
  FALLEN OVER THE AREA AND ONGOING THUNDERSTORMS WILL PRODUCE        
  ADDITIONAL HEAVY RAINFALL.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ALGONQUIN...ARLINGTON HEIGHTS...BARRINGTON...BUFFALO GROVE...
  DEERFIELD...DES PLAINES...EVANSTON...FOX LAKE...GAGES LAKE...
  GLENCOE...GLENVIEW...GRAYSLAKE...GURNEE...HARVARD AND HIGHLAND
  PARK.


OTHER LOCATIONS AFFECTED...
COLLEGE OF LAKE COUNTY...GREAT LAKES NAVAL TRAINING CENTER...HARPER
COLLEGE...LAKE COUNTY IL FAIRGROUNDS...LAKE FOREST COLLEGE...MCHENRY
COUNTY COLLEGE...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS...VIADUCTS...AND UNDERPASSES.
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 4238 8783 4223 8781 4210 8771 4195 8763
      4204 8824 4215 8824 4215 8874 4250 8883

$$

KREIN

4 follow-up statements

051 
WGUS73 KLOT 261116
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
616 AM CDT WED JUN 26 2013

ILC007-031-097-111-261630-
/O.CON.KLOT.FF.W.0021.000000T0000Z-130626T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-BOONE IL-LAKE IL-COOK IL-
616 AM CDT WED JUN 26 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN COOK...LAKE...
EASTERN BOONE AND MCHENRY COUNTIES UNTIL 1130 AM CDT...

AT 609 AM CDT...WEATHER SPOTTERS REPORTED THUNDERSTORMS WITH VERY
HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATES OF UP TO 4 
INCHES OF RAIN HAS FALLEN OVER THE PAST FEW HOURS.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ALGONQUIN...ARLINGTON HEIGHTS...BARRINGTON...BUFFALO GROVE...
DEERFIELD...DES PLAINES...EVANSTON...FOX LAKE...GAGES LAKE...
GLENCOE...GLENVIEW...GRAYSLAKE...GURNEE...HARVARD AND HIGHLAND PARK.

A TRAINED SPOTTER HAS REPORTED VERY HEAVY RAINFALL AND FLOODED ROADS 
IN THE WOODSTOCK AREA OF MCHENRY COUNTY.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES OF RAINFALL ARE 
POSSIBLE IN THE WARNED AREA.  PARTICULARLY HARD HIT ARE THE FOX 
RIVER...FLINT CREEK...SALT CREEK...AND BUFFALO CREEK BASINS.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS...VIADUCTS AND UNDERPASSES. 
ADDITIONALLY...RURAL ROADS AND FARMLANDS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE ALSO SUBJECT TO 
FLOODING.

&&

LAT...LON 4238 8783 4223 8781 4210 8771 4195 8763
      4204 8824 4215 8824 4215 8874 4250 8883

$$

KREIN

668 
WGUS73 KLOT 261257
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
757 AM CDT WED JUN 26 2013

ILC007-031-097-111-261630-
/O.CON.KLOT.FF.W.0021.000000T0000Z-130626T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-BOONE IL-LAKE IL-COOK IL-
757 AM CDT WED JUN 26 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN COOK...LAKE...
EASTERN BOONE AND MCHENRY COUNTIES UNTIL 1130 AM CDT...

AT 748 AM CDT...WEATHER SPOTTERS REPORTED THUNDERSTORMS WITH VERY
HEAVY RAINFALL ACROSS THE WARNED AREA. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ALGONQUIN...ARLINGTON HEIGHTS...BARRINGTON...BUFFALO GROVE...
DEERFIELD...DES PLAINES...EVANSTON...FOX LAKE...GAGES LAKE...
GLENCOE...GLENVIEW...GRAYSLAKE...GURNEE...HARVARD AND HIGHLAND PARK.

TRAINED SPOTTERS HAVE REPORTED 6 INCHES OF RAINFALL IN 
ALGONQUIN...5.3 INCHES IN MCHENRY...3.7 INCHES IN ARLINGTON HEIGHTS.

NUMEROUS ROAD CLOSURES HAVE BEEN REPORTED...INCLUDING...THE EDENS 
EXPRESSWAY FROM PRATT TO MONTROSE...U.S. ROUTE 22 AT KELSER 
AVE...WHEELING ROAD BETWEEN HINTZ ROAD AND DUNDEE ROAD...WOLF ROAD 
AT GOLF ROAD...AND DEMPSTER ROAD BETWEEN WAUKEGAN ROAD AND HARLEM 
ROAD.

OTHER LOCATIONS AFFECTED...
COLLEGE OF LAKE COUNTY...GREAT LAKES NAVAL TRAINING CENTER...HARPER
COLLEGE...LAKE COUNTY IL FAIRGROUNDS...LAKE FOREST COLLEGE...LOYOLA
UNIVERSITY...MCHENRY COUNTY COLLEGE...MCHENRY COUNTY FAIRGROUNDS...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF UP TO ONE INCH ARE POSSIBLE IN
THE WARNED AREA.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS...VIADUCTS AND UNDERPASSES. ADDITIONALLY...
RURAL ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE ALSO SUBJECT TO FLOODING.

&&

LAT...LON 4238 8783 4223 8781 4210 8771 4195 8763
      4204 8824 4215 8824 4215 8874 4250 8883

$$

KREIN

735 
WGUS73 KLOT 261412
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
912 AM CDT WED JUN 26 2013

ILC007-031-097-111-261630-
/O.CON.KLOT.FF.W.0021.000000T0000Z-130626T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-BOONE IL-LAKE IL-COOK IL-
912 AM CDT WED JUN 26 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHERN COOK...LAKE...
EASTERN BOONE AND MCHENRY COUNTIES UNTIL 1130 AM CDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH 
VERY HEAVY RAINFALL MOVED ACROSS THE WARNED AREA. RADAR ESTIMATES 
AND SPOTTERS REPORT 4 TO 6 INCHES OF RAIN FELL IN A SWATH FROM 
HARVARD TO WOODSTOCK TO CRYSTAL LAKE TO BARRINGTON TO GLENVIEW.  

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CONTINUE TO CAUSE FLASH 
FLOODING TO OCCUR. 

ADDITIONAL SCATTERED THUNDERSTORMS WERE DEVELOPING AND WILL CONTINUE 
TO MOVE THROUGH THE AREA. MANY ROADS ARE CLOSED IN THE NORTH SUBURBS 
DUE TO FLOODING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...FLOODING OF ROADS...URBAN AREAS...
HIGHWAYS...UNDERPASSES AND LOW LYING AREAS.

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 4238 8783 4223 8781 4210 8771 4195 8763
      4204 8824 4215 8824 4215 8874 4250 8883

$$

ALLSOPP

859 
WGUS73 KLOT 261540
FFSLOT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1040 AM CDT WED JUN 26 2013

ILC007-031-097-111-261554-
/O.CAN.KLOT.FF.W.0021.000000T0000Z-130626T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-BOONE IL-LAKE IL-COOK IL-
1040 AM CDT WED JUN 26 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN COOK...
LAKE...EASTERN BOONE AND MCHENRY COUNTIES HAS BEEN REPLACED BY A NEW 
FLASH FLOOD WARNING...

LAT...LON 4238 8783 4223 8781 4210 8771 4195 8763
      4204 8824 4215 8824 4215 8874 4250 8883

$$

ALLSOPP

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 11:28 PM CDT	River Flood Watch	LOT	Bureau, LaSalle	12 hr
Jun 25, 11:28 PM CDT	Special Weather Statement	LOT	Iroquois	47 min
Jun 25, 11:33 PM CDT	River Flood Advisory	LOT	Lee	11 hr
Jun 25, 11:33 PM CDT	River Flood Advisory	LOT	Kane, Kendall	12 hr
Jun 26, 12:11 AM CDT	Special Weather Statement	LOT	Iroquois	34 min
Jun 26, 2:53 AM CDT	Special Weather Statement	LOT	Boone	37 min
Jun 26, 3:52 AM CDT	Areal Flood Advisory	LOT	Boone, McHenry	6 hr
Jun 26, 4:33 AM CDT	Areal Flood Advisory	LOT	Cook, Lake, McHenry	6 hr
Jun 26, 5:43 AM CDT	River Flood Warning	LOT	Winnebago	10 days
Jun 26, 7:13 AM CDT	Flash Flood Warning	LOT	Cook, DuPage, Kane	4 hr
Jun 26, 8:34 AM CDT	Severe Thunderstorm Warning	LOT	Ford, Grundy, Kankakee, Kendall, LaSalle, Livingston and 1 more	26 min
Jun 26, 8:37 AM CDT	River Flood Warning	LOT	Cook	56 hr
Jun 26, 8:37 AM CDT	River Flood Warning	LOT	Kane, McHenry	9 days
Jun 26, 9:03 AM CDT	Special Weather Statement	LOT	Ford, Iroquois, Kankakee, Will	57 min
Jun 26, 9:25 AM CDT	Special Weather Statement	LOT	Boone, DeKalb, McHenry, Winnebago	65 min
Jun 26, 9:43 AM CDT	Areal Flood Advisory	LOT	Boone, Winnebago	3 hr
Jun 26, 9:52 AM CDT	Special Weather Statement	LOT	Cook	38 min
Jun 26, 10:14 AM CDT	River Flood Warning	LOT	Winnebago	9 days
Jun 26, 10:23 AM CDT	Flash Flood Warning	LOT	Boone, Winnebago	6 hr
Jun 26, 10:37 AM CDT	River Flood Watch	LOT	Lee	5 hr
Jun 26, 10:38 AM CDT	Flash Flood Warning	LOT	Boone, Cook, DuPage, Kane, Lake, McHenry	6 hr
Jun 26, 10:56 AM CDT	River Flood Advisory	LOT	Boone	5 hr
Jun 26, 10:56 AM CDT	River Flood Advisory	LOT	Winnebago	5 hr
Jun 26, 11:06 AM CDT	River Flood Warning	LOT	Kane, Kendall	6 days
Jun 26, 11:19 AM CDT	River Flood Watch	LOT	Cook	22 hr
Jun 26, 11:22 AM CDT	River Flood Advisory	LOT	Lake	70 hr
Jun 26, 11:34 AM CDT	River Flood Advisory	LOT	Cook	23 hr
Jun 26, 11:44 AM CDT	River Flood Advisory	LOT	Bureau, LaSalle	23 hr
Jun 26, 1:37 PM CDT	River Flood Advisory	LOT	Lake	16 hr
Jun 26, 3:46 PM CDT	River Flood Warning	LOT	Ogle	5 days
Jun 26, 3:46 PM CDT	River Flood Warning	LOT	Lee	28 hr
Jun 26, 3:46 PM CDT	River Flood Warning	LOT	Boone	42 hr
Jun 26, 3:46 PM CDT	River Flood Warning	LOT	Winnebago	60 hr
Jun 26, 3:46 PM CDT	River Flood Warning	LOT	Winnebago	28 hr
Jun 26, 4:27 PM CDT	Flash Flood Warning	LOT	Boone, Cook, Kane, Lake, McHenry	18 hr

Nearby

Flash Flood Warnings in Illinois, 2013 Every flash flood warning in 2013

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.