* WHAT. North winds to 30 kt and significant waves to 8 ft occasionally to 10 ft expected. * WHERE. Calumet Harbor IL to Michigan City IN. * WHEN. From 9 PM this evening to 9 PM CDT Monday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE. Ottawa, Allegan and Van Buren counties. * WHEN. From 8 PM EDT this evening through Monday evening. * IMPACTS. Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS. North winds of 15 to 25 mph will build waves this evening that will persist into Monday. Dangerous waves and currents are expected from this evening through Monday evening. North side of north piers will be dangerous places to swim. The worst conditions will likely occur Monday afternoon and evening.

* WHAT. North winds 15 to 25 knots and waves 3 to 6 feet expected. Waves will be highest both this evening and again Monday afternoon and evening. * WHERE. St Joseph to Manistee. * WHEN. Until 11 PM EDT Monday. * IMPACTS. Conditions will be hazardous to small craft. * ADDITIONAL DETAILS. Waves will build this evening towards sunset and higher winds develop out of the north. A brief period where the winds and waves will subside a bit will be Monday morning, before conditions ramp up again Monday afternoon and evening.

* WHAT. North winds 15 to 25 knots and waves 3 to 6 feet expected. Waves will be highest both this evening and again Monday afternoon and evening. * WHERE. St Joseph to Manistee. * WHEN. Until 11 PM EDT Monday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE. Ottawa, Allegan and Van Buren counties. * WHEN. From 8 PM EDT this evening through Monday evening. * IMPACTS. Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.

* WHAT. North winds to 30 kt and significant waves to 8 ft occasionally to 10 ft expected. * WHERE. Calumet Harbor, IL to Michigan City, IN. * WHEN. Until 9 PM CDT Monday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. High wave action and dangerous currents expected at Lake Michigan beaches. Waves 5 to 8 ft expected. * WHERE. In Illinois, Lake IL, Northern Cook and Central Cook Counties. In Indiana, Lake IN and Porter Counties. * WHEN. From 9 PM CDT this evening through late Monday night. * 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. Waves are expected to build rapidly after 7 to 8 pm this evening.