Three-part Webinar three Wednesdays: March 12, 19, and 26 from 7-8:30 p.m. (recordings available) for sailors, powerboaters, and paddlers with instructor Mark Thornton of LakeErieWX. This live webinar series will examine the various types of thunderstorms and the ingredients that lead to their formation. The webinar will cover why thunderstorms often ‘pop-up’ late on summer afternoons and why some storms have short lifespans while others persist for several hours. The webinar will also introduce the many readily available resources for forecasting and monitoring thunderstorms. The webinar is designed for all boaters who would like to reduce their chances of a hair-raising or windswept encounter with a thunderstorm. $90 for the series; $85 if you sign up by Dec. 31 with the code Spinsheet-Save5. Sign up here: https://www.lakeeriewx.com/Seminars/Event_Spinsheet_Thunderstorms/Spinsheet-Thunderstorms.html