The areas affected include. Nearshore and Open Waters from St Joseph to Pentwater MI. At 421 AM EDT, Doppler radar indicated an area of thunderstorms, capable of producing winds to around 30 knots. They stretched from was located 10 nm northwest of St. Joseph Light northward to Whitehall. They were moving northeast at 50 knots. Locations impacted include. South Haven Light, Saugatuck Pier Heads, St. Joseph Light, White Lake Pier Heads, Mona Lake Channel, The White Lake Pierheads, Little Sable Point Light, Grand Haven Light, Muskegon Light, and St. Joseph.