* WHAT. South winds 15 to 20 knots with gusts up to 30 knots and waves 2 to 5 feet expected. * WHERE. Grand Haven to Manistee. * WHEN. From 10 AM this morning to 8 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft. * ADDITIONAL DETAILS. Frequent gusts over 22 knots will be the primary hazard to small craft today. Large waves are possible near and offshore Big and Little Sable Points.

* WHAT. High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves. * WHERE. Mason and Oceana counties. * WHEN. From 10 AM EDT this morning through this evening. * IMPACTS. Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. * ADDITIONAL DETAILS. Winds will be from the south-southeast today. The beaches with highest swim risk include areas between Whitehall and Little Sable Point including Silver Lake State Park, and also near Big Sable Point including Ludington State Park.