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.
Waterspout In Tampa Bay taken by Photos de Jeremy Kappell WDRB .Waterspouts, for the unfamiliar, are basically water-tornados, often weaker than land tornados but still completely terrifying. As is the case with this waterspout, which hit Tampa Bay.