Headline:
Flash Flood Warning issued April 17 at 9:26PM CDT until April 18 at 2:00AM CDT by NWS Chicago IL
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
April 17, 2026 - 7:26pm
Expires:
April 18, 2026 - 12:00am
Description:
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.
Instruction:
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.
Area Description:
Boone, IL; Lake, IL; McHenry, IL
Forcast Office:
NWS Chicago IL
Sender: