Marine Weather Seminars and Clinics

Full-Day Seminar Descriptions

Great Lakes Basic Marine Weather Seminar

Format: 8 Hours (Including Lunch)

Learn a little weather forecasting and reduce the uncertainty of boating on the Great Lakes. While it isn’t possible to predict the weather with total precision, it doesn’t mean that the weather must be entirely unpredictable. The Great Lakes Basic Marine Weather Seminar is designed to provide Great Lakes power boaters and sailors with an understanding of basic marine weather forecasting (click here to read more.....)


Basic Marine Weather For Paddlers

Format: 8 Hours (Including Lunch)

Paddling requires many skills. Regardless of where your adventures take you, no aspect is more important than an understanding of marine weather forecasting. During the Marine Weather Forecasting Seminar you will gain an understanding of basic weather principles and learn how to use a wide variety of forecasting resources. (click here to read more....)


Preparing Your Bayview Mack Weather Forecast

Format: 8 Hours (Including Lunch)

Long distance sailors must be weather-savvy. The ability to prepare a detailed long-range forecast before the start of the race and monitor changing conditions on the way to the Island is critically important. Seasoned Bayview Mack sailors understand that conditions on Lake Huron can quickly deteriorate. Misjudging the wind forecast can quickly send you to the back of your fleet, while failing to properly assess the risk for severe weather can unnecessarily jeopardize the safety of the crew. (Click here for more information.)


Preparing Your Chicago Mac Weather Forecast

Format: 8 Hours (Including Lunch)

Long-distance sailing and weather forecasting are inseparable. Experienced Chicago Mac sailors understand that developing a detailed weather forecast and monitoring its evolution on the racecourse is an important strategic and safety aspect of participating in this summer classic. Misjudging the wind forecast can quickly send you to the back of your fleet, while failing to properly assess the risk for severe weather can unnecessarily jeopardize the safety of the crew (click here to read more ....)


Coastal & Offshore Marine Weather Forecasting-Master Class

Format: 14 Hours (Two Days Including Lunch)

Coastal and off-shore cruising requires many skills. Regardless of where your adventures may take you, no aspect of cruising is more important than an understanding of marine weather forecasting. During the 2-day Marine Weather Forecasting Masters Class, you will gain an understanding of basic weather principles and learn how to use a wide variety of forecasting resources. These skills will improve your cruise planning and reduce the likelihood that you will be exposed to uncomfortable or hazardous weather conditions. (click here to read more...)

Half-Day Seminar & Clinic Descriptions

Basic Marine Weather For Junior Sailors

Format: 4 Hours

Sailing a small boat requires many skills, however no aspect of boating is more important than understanding marine weather forecasting. The weather determines when it is safe to leave port and whether your outing will be safe and enjoyable. During this four-hour seminar, high school age junior sailors will learn basic weather principles and how to use a wide variety of forecasting resources. These skills will reduce the potential that they will encounter uncomfortable or hazardous weather conditions while they are on the water. (click here to read more ....)


Basic Marine Weather Clinic

Format: 4 Hours

Learn a little weather forecasting and reduce the uncertainty of boating on the Great Lakes. While it isn’t possible to predict the weather with total precision, it doesn’t mean that the weather must be entirely unpredictable. The half-day Basic Marine Weather Clinic is designed to provide Great Lakes power boaters and sailors with an understanding of basic marine weather forecasting (click here to read more.....)


Understanding & Avoiding Thunderstorms

Format: 4 Hours

Thunderstorms can quickly spoil an outing in many ways—strong winds, large waves, dangerous lightning, waterspouts, or visibility-limiting rain. This four-hour clinic will examine the various types of thunderstorms and the ingredients that lead to their formation. The clinic will cover why thunderstorms often ‘pop-up’ late on summer afternoons and why some storms have short life-spans while others persist for several hours. (click here to read more...)


Weather Forecasting & Route Planning With GRibs

Format: 4 Hours

GRibs (an abbreviation for gridded binary) are small, readily-available data files that contain a wealth of weather forecasting information. Using GRibs is a great way for long-distance, cruising, and day sailors to forecast the weather and plan the most favorable route, particularly when restricted by a slow Internet connection. (Click here for more information...)



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 (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 also employed as a Teaching Assistant in the Certificate of Achievement in Weather Forecasting Program at Penn State University.

Click here to view my meteorological resume or here to read about my marine weather forecasting seminars and workshops.

Interested in reading and learning more about marine weather? A few times each year, I publish an article on an interesting marine weather event. Click here to subscribe to my email distribution list.

Email: Mark@LakeErieWX.com
Phone: 440.250.9179






Basic Marine Weather-Masters Class
Cruisers University-Annapolis Boat Shows
Date: October 7 & 8, 2020

Click here for more information on this 2-day seminar

Click here for the complete seminar schedule.

Seminar Reviews
"You have a passion for meteorology that is contagious and a gift for communicating a complex subject.".

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