UPDATE - My final two slides on Cockpit Weather implied that U.S. contest rules did NOT allow weather in the cockpit. I stand corrected. Since 2017 and under current rules, weather data can be used in the cockpit for competitions.

Andy Blackburn summarized the U.S. rules committee position. "The RC view is that since this is ubiquitously available on mobile phones it is impossible to police except by honor system and it creates a number of issues to deny pilots information that could improve their safety during extreme weather events, such as thunderstorms."

Walt Rogers WX