* WHAT...For the first Small Craft Advisory, Highest gusts up to 25 kts from the west and highest waves around 4 feet. For the second Small Craft Advisory, Highest gusts up to 25 kts from the west and highest waves around 3 feet expected. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island, St Ignace to False Detour Channel and 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island. * WHEN...For the first Small Craft Advisory, until 7 AM EDT this morning. For the second Small Craft Advisory, from 2 PM this afternoon to 8 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.