Cruisers are naturally drawn to the tropics by the promise of shimmering blue water, warm sandy beaches, and predictable trade winds. However, the tropics are also the breeding ground for nature’s most destructive storms – tropical cyclones. Join us to learn more about Tropical Weather systems, and the forecasting and planning that can help assure safe passages in the tropics.

Weather forecasting in the tropics is very different than forecasting in the mid-latitudes. Tropical Weather Forecasting begins with a review of the prevailing weather patterns in the tropics. From there, we’ll discuss where to find weather forecasting products covering the region and learn how to interpret them. We’ll also delve into resources that cover the formation, movement, and evolution of tropical cyclones (tropical depressions, tropical storms and hurricanes). If your cruising plans include the tropics, don’t miss this introduction to tropical weather forecasting.


Online webinars at GLCC School

April 26, 2022

8:00 pm to 9:30 pm, Eastern Time


Please send questions regarding the webinar to Mark Thornton at Please click here to view the speaker's biography.

About The Presenter

Mark Thornton has been sailing for more than 25 years and currently owns Osprey, a C&C 35. His interest in weather forecasting grew from his experiences cruising and racing on the Great Lakes. 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.

He is the president of LakeErieWX LLC, a company dedicated to providing marine weather education and forecasting resources for recreational boaters ( 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 Mackinac Race since 2014. Mark is also employed as a Teaching Assistant in the Certificate of Achievement in Weather Forecasting Program at Penn State University.