* WHAT...Southwest winds 10 to 20 knots with gusts up to 25 knots and waves 3 to 6 feet expected. * WHERE...St Joseph to Manistee. * WHEN...From 11 PM this evening to 2 PM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. * ADDITIONAL DETAILS...Winds with gusts around 25 knots will gradually expand south this evening with waves building into Thursday morning. Waves 4 feet or higher are expected north of South Haven. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.