What: High wave action and dangerous currents expected at Lake Michigan beaches. Waves 4 to 6 ft expected.
Where: Lake IL, Northern Cook and Central Cook Counties.
When: Through Monday afternoon.
Impacts: Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.
Additional Details: Winds will shift to the north and abruptly increase, leading to quickly building waves mid afternoon. Hazardous waves and swimming conditions will continue into Monday afternoon.
Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.