589  
WGUS83 KLOT 041241  
FLSLOT  
 
FLOOD ADVISORY  
NATIONAL WEATHER SERVICE CHICAGO IL  
741 AM CDT SAT JUL 4 2026  
 
ILC031-043-041700-  
/O.CON.KLOT.FA.Y.0061.000000T0000Z-260704T1700Z/  
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/  
COOK IL-DUPAGE IL-  
741 AM CDT SAT JUL 4 2026  
   
..FLOOD ADVISORY REMAINS IN EFFECT UNTIL NOON CDT TODAY  
 
* WHAT...FLOODING CAUSED BY MULTIPLE ROUNDS OF THUNDERSTORMS  
CONTINUES.  
 
* WHERE...A PORTION OF NORTHEAST ILLINOIS, INCLUDING THE FOLLOWING  
COUNTIES, COOK AND DUPAGE.  
 
* WHEN...UNTIL NOON CDT.  
 
* IMPACTS...FLOODING IS OCCURRING IN POOR DRAINAGE AND URBAN AREAS.  
WATER MAY BE COVERING ROADWAYS, ESPECIALLY ALONG ROUTE 53 NEAR THE  
MORTON ARBORETUM. HIGH WATER MAY RECEDE SLOWLY FROM FLOODED AREAS,  
POSSIBLY STALLED BY CLOGGED DRAINS.  
 
* ADDITIONAL DETAILS...  
- AT 739 AM CDT, FLOODING WAS OCCURRING IN THE WARNED AREA. IN  
THE PAST 48 HOURS, BETWEEN 3 AND 5 INCHES OF RAIN HAS FALLEN.  
RIVER GAUGES INDICATE THAT CREEKS AND RIVERS ARE AT OR ABOVE  
BANKFULL, SUGGESTING THERE ARE AREAS FLOODING IN THE AREA.  
- THE WORST FLOODING IS OCCURRING NEAR THE DUPAGE RIVER IN  
DOWNERS GROVE AND LISLE, PARTICULARLY NEAR THE MORTON  
ARBORETUM.  
- SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...  
CHICAGO, NAPERVILLE, CICERO, ARLINGTON HEIGHTS, EVANSTON,  
SCHAUMBURG, SKOKIE, DES PLAINES, BERWYN, MOUNT PROSPECT,  
WHEATON, OAK PARK, DOWNERS GROVE, GLENVIEW, ELMHURST,  
LOMBARD, OHARE AIRPORT, CAROL STREAM, PARK RIDGE AND ADDISON.  
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A FLOOD ADVISORY MEANS MINOR FLOODING ALONG WATERWAYS AND OTHER POOR  
DRAINAGE AREAS IS IMMINENT OR MAY ALREADY BE OCCURRING. PERSONS IN  
THE ADVISORY AREA SHOULD USE CAUTION AND AVOID FLOOD WATERS.  
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE  
DANGERS OF FLOODING.  
 
 
 
LAT...LON 4207 8797 4208 8767 4199 8764 4197 8762  
4196 8762 4195 8762 4193 8762 4191 8770  
4180 8784 4176 8798 4176 8811 4199 8811  
 
 
 
BORCHARDT  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab IL Page
The Nexlab IN Page
Main Text Page