Nightly News | November 13, 2013
>>> one of the moments when mother nature chose to remind us that we are tiny and inconsequential and sometimes our job is to sit back and watch the show. beautiful pictures from texas of what's called a roll cloud . it's a horizontal vortex in the sky. for these we can thank bonnie mask, a truck driver who happened to take the day off. when a cold wind passed over her house in texas she grabbed her camera and captured the rare event.