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. During flooding, rapidly-moving water in drainage ditches, culverts, and detention ponds are especially unsafe and banks may quickly erode. Stay away or be swept away.

FLASH FLOOD WARNING FOR AN ICE JAM REMAINS IN EFFECT UNTIL 915 AM CST SATURDAY FOR EAST CENTRAL GRUNDY AND SOUTHWESTERN WILL COUNTIES... At 743 PM CST, emergency management and river gauge data indicated renewed ice jamming near the I-55 bridge, which has caused river levels to quickly rise to 15.5 ft to the east of I-55. Shifting of the ice jam and subsequent rapid break up are imminent, which will result in potentially life threatening flash flooding downstream of I-55. HAZARD...Life threatening flash flooding from an ice jam. SOURCE...Emergency management. IMPACT...Life-threatening flash flooding of areas near the ice jam. Flash flooding will occur from near the Interstate 55 bridge to the confluence with the Illinois River. Sudden shifting of this ice jam as it moves down river may cause rapid rises of water and flooding of property along the banks. Water is expected to rise up to 3-5 feet and will move downstream toward the mouth of the Kankakee River, which may flood roadways and structures along the banks. Flowing ice may damage roadways and structures along the immediate banks of the river. FLASH FLOOD...OBSERVED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE