This is an awesome picture. Supercell Thunderstorm by Sean Heavey, nationalgeographic: A supercell thunderstorm rolls across the Montana prairie at sunset. This was a winning shot in the 2010 National Geographic Nature Gallery Photo Contest.
"The road to thunder." I remember going down a road in Arizona, in the middle of the desert, nobody around. and a storm was raging overhead. The lightning was purple and the sky was grey. It was beautiful