Weather Forecasting & Route Planning With GRibs

Mark Thornton began sailing on Lake Erie in 1994 and he currently owns Osprey, a 1985 C&C 35. His interest in weather forecasting grew from his experiences cruising and racing on the lake. Mark is a 2006 graduate of the Penn State University Certificate of Achievement in Weather Forecasting, a two-year program that develops skills in general, tropical and severe weather forecasting.