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weather NWS minor Boone, IL; De Kalb, IL; Lake, IL; Lee, IL; McHenry, IL; Ogle, IL; Winnebago, IL June 12, 2026 at 1:42 PM

Flood Advisory issued June 12 at 8:42AM CDT until June 12 at 7:00PM CDT by NWS Chicago IL

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Portions of north central and northeast Illinois, including the following counties, in north central Illinois, Boone, De Kalb, Lee, Ogle and Winnebago. In northeast Illinois, Lake IL and McHenry. * WHEN...Until

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