fixed addition bug in bunkers storm motion code; updated to be current with Bunkers et. al 2014
fixed addition bug in bunkers storm motion code; updated to be current with Bunkers et. al 2014

blizzardwarriorwx/SHARPpy,scollis/SHARPpy,djgagne/SHARPpy,djgagne/SHARPpy,djgagne/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,blizzardwarriorwx/SHARPpy,scollis/SHARPpy,blizzardwarriorwx/SHARPpy,djgagne/SHARPpy,scollis/SHARPpy