Moderate Expected Likely Beach Hazards Statement Beach Hazards Statement issued May 20 at 4:11PM CDT until May 21 at 1:00PM CDT by NWS Chicago IL May 20, 4:11 PM → May 21, 1:00 PM WHAT: High wave action and dangerous currents expected at LakeMichigan beaches. Waves 3 to 6 ft expected. WHERE: Lake IL, Northern Cook and Central Cook Counties. WHEN: Through Thursday afternoon. IMPACTS: Swimming conditions will be life threatening,especially for inexperienced swimmers. For information on swimadvisories or bans at Chicago beaches: www. cpdbeaches. com. + 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: May 20, 5:15 PM Source: NWS Alert