* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 3 to 6 feet expected.
* WHERE...Lake IL, Northern Cook and Central Cook Counties.
* WHEN...Until 3 PM CDT this afternoon.
* IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.
* ADDITIONAL DETAILS...An additional period of dangerous swimming conditions is expected tonight into early next week.