940
WGUS73 KLOT 180226
FFSLOT
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
926 PM CDT FRI APR 17 2026
ILC007-097-111-180700-
/O.CON.KLOT.FF.W.0011.000000T0000Z-260418T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BOONE IL-LAKE IL IL-MCHENRY IL-
926 PM CDT FRI APR 17 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 AM CDT SATURDAY FOR
BOONE, LAKE IL AND MCHENRY COUNTIES...
AT 926 PM CDT, DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN WITH RATES IN EXCEED OF 1 INCH
PER 30 MINUTES. MULTIPLE REPORTS OF ROADWAY FLOODING HAVE BEEN
RECEIVED FROM AREAS NEAR HARVARD. UP TO 2 INCHES OF RAIN HAVE
FALLEN. FLASH FLOODING IS ALREADY OCCURRING.
HAZARD...FLASH FLOODING.
SOURCE...RADAR AND AUTOMATED GAUGES.
IMPACT...RAPID-ONSET FLOODING OF CREEKS, STREAMS, DRAINAGE
DITCHES, STREETS, UNDERPASSES, LOW-LYING AREAS, AND
OTHER POOR DRAINAGE AREAS.
SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
WAUKEGAN, BUFFALO GROVE, CRYSTAL LAKE, NORTH CHICAGO, GURNEE,
MUNDELEIN, ALGONQUIN, HIGHLAND PARK, LAKE IN THE HILLS, ROUND LAKE
BEACH, MCHENRY, BELVIDERE, VERNON HILLS, WOODSTOCK, ZION, HUNTLEY,
LOVES PARK, GRAYSLAKE, LIBERTYVILLE AND LAKE ZURICH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS RAPID-ONSET FLOODING IS IMMINENT OR MAY
ALREADY BE OCCURRING. PERSONS ALONG CREEKS, DRAINAGE DITCHES, AND
OTHER WATERWAYS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE
AND PROPERTY.
TURN AROUND, DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
LAT...LON 4247 8894 4247 8882 4249 8874 4249 8866
4249 8780 4247 8778 4246 8778 4238 8779
4235 8781 4231 8781 4229 8782 4221 8779
4215 8774 4216 8776 4216 8777 4215 8874
4222 8894
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...1 INCH IN 30 MINUTES
WSL
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