Does your family know what to do? 30/30 rule
9/26/2014 (Permalink)
Does your family know what to do before, during, and after a lightning storm? Learn the facts and practice your plan. The 30/30 rule is if there is less than 30 seconds between a flash of lightning and the sound of thunder, seek shelter. Wait at least 30 minutes after the last clap of thunder before leaving shelter.