Moderate Expected Likely Beach Hazards Statement Beach Hazards Statement issued September 21 at 9:25AM CDT until September 23 at 7:00PM CDT by NWS Chicago IL Sep 21, 9:25 AM → Sep 23, 7:00 PM WHAT: High wave action and dangerous currents expected at LakeMichigan beaches. Waves 5 to 8 ft expected. WHERE: Lake IL, Northern Cook and Central Cook Counties. WHEN: Through Wednesday evening. IMPACTS: Swimming conditions will be life threatening,especially for inexperienced swimmers. + Read More Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures. Updated: Sep 21, 2:12 PM Source: NWS Alert