Mark Thornton has been boating on the Great Lakes for more than 30 years. Mark recently transitioned from sailing and now owns Osprey, a Mainship 34 Pilot. He 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. He is the president of LakeErieWX LLC, a company dedicated to providing marine weather education and forecasting resources for recreational boaters (www.lakeeriewx.com). Mark publishes a marine weather blog and teaches basic forecasting seminars to recreational boaters during the off-season. He has served as the Race Meteorologist for the Bayview Race to Mackinac since 2014. Mark is employed as a Teaching Assistant in the Certificate of Achievement in Weather Forecasting Program at Penn State University.