The areas affected include. Nearshore and Open Waters from St Joseph to Manistee MI. At 834 PM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from 12 nm west of Ludington Light to 40 nm west of the St. Joseph Light, moving northeast at 35 knots. These thunderstorms will be capable of both winds to around 30 knots over the next 1 to 2 hours as well as cloud to water lightning strikes. Boaters between St. Joseph and Manistee should be alert to changing conditions and seek safe harbor if threatening weather approaches. Locations impacted include. South Haven Light, Saugatuck Pier Heads, St. Joseph Light, White Lake Pier Heads, The White Lake Pierheads, Little Sable Point Light, Grand Haven Light, Muskegon Light, and St. Joseph.

* WHAT. Dense fog will reduce visibility to less than 1 NM. * WHERE. Southern Two Thirds of the Open Waters of Lake Michigan south of a line from Rock Island Passage WI to Charlevoix MI. * WHEN. Until 11 PM CDT this evening. * IMPACTS. Low visibility will make navigation difficult. * ADDITIONAL DETAILS. Marine dense fog continues to affect the open waters of Lake Michigan, especially in the western half.