“Join Skywarn Youth ham radio operators for the second year in a row as we operate Special Event Station: N0A (November Zero Alpha), March 15th through March 29th, in an effort to encourage hams throughout the U.S. and around the world to learn about Severe Weather Awareness.”

skywarnyouth.net/special-event/

qrz.com/db/N0A

Thanks to Len KF8EJA for the reference