Flood Advisory issued July 27 at 12:26PM CDT until July 27 at 3:30PM CDT by NWS Chicago IL
Issue date: 2026-07-27T17:26+00:00
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northeast Illinois, including the following county, Lake IL. * WHEN...Until 330 PM CDT. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - At 1226 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. Between 1 and 2 inches of rain have fallen. - Some locations that will experience flooding include... Waukegan, North Chicago, Gurnee, Round Lake Beach, Zion, Grayslake, Libertyville, Antioch, Lake Villa, Lindenhurst, Beach Park, Gages Lake, Park City, Winthrop Harbor, Lake Bluff, Grandwood Park, Green Oaks, Wadsworth, Venetian Village and Lake Catherine. - http://www.weather.gov/safety/flood
Beach Hazards Statement issued July 27 at 11:20AM CDT until July 29 at 10:00AM CDT by NWS Chicago IL
Issue date: 2026-07-27T16:20+00:00
* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 5 to 9 ft expected. * WHERE...In Illinois, Lake, Northern Cook and Central Cook Counties. In Indiana, Lake and Porter Counties. * WHEN...From late tonight through Wednesday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.
Heat Advisory issued July 27 at 9:33AM CDT until July 27 at 9:00PM CDT by NWS Chicago IL
Issue date: 2026-07-27T14:33+00:00
* WHAT...Heat index values in excess of 105 expected. * WHERE...In Illinois, Central Cook, DuPage, Lake IL, Northern Cook, and Southern Cook Counties. In Indiana, Benton, Jasper, Lake IN, and Newton Counties. * WHEN...Until 9 PM CDT /10 PM EDT/ this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Heat Advisory issued July 27 at 8:03AM CDT until July 27 at 9:00PM CDT by NWS Chicago IL
Issue date: 2026-07-27T13:03+00:00
* WHAT...Peak heat index values up to 100 to 110 degrees expected. * WHERE...Iroquois, Central Cook, DuPage, Eastern Will, Kankakee, Lake IL, Northern Cook, Northern Will, Southern Cook, and Southern Will Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
