Illinois Severe Flash Flood Warning | Effective 07/02/2026 22:16

Headline: 
Flash Flood Warning issued July 3 at 12:16AM CDT until July 3 at 3:15AM CDT by NWS Chicago IL
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 2, 2026 - 10:16pm
Expires: 
July 3, 2026 - 1:15am
Description: 
FFWLOT The National Weather Service in Chicago has issued a * Flash Flood Warning for... Southeastern De Kalb County in north central Illinois... Southern Kane County in northeastern Illinois... Northwestern Kendall County in northeastern Illinois... * Until 315 AM CDT. * At 1216 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding. SOURCE...Radar. 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... Aurora, St. Charles, Batavia, Geneva, Plano, Sandwich, North Aurora, Sugar Grove, Elburn, Hinckley, Somonauk, Waterman, Big Rock, Kaneville and Little Rock.
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.
Area Description: 
De Kalb, IL; Kane, IL; Kendall, IL
Forcast Office: 
NWS Chicago IL