NEW : Snow is falling at Up to three feet , down from Up to three feet . NEW : Some motorists were stranded on Interstate 90 for about 20 hours . Some hopped highway fences after being stuck for about 20 hours , a witness says . 3 inches per hour of snow fell in some Buffalo -area locations over every day .
NEW : Snow is falling at a half-inch per hour , down from 3 inches per hour . NEW : Some motorists were stranded on Interstate 90 for about 20 hours . Some hopped highway fences after being stuck for 16 hours , a witness says . Up to three feet of snow fell in some Buffalo-area locations over two days .