This wall cloud kept taking on a different form and shape almost every minute. They make great camera subjects because of this. Note the green skies underneath, signifying very large hail falling. I was quite happy snapping away at the storm on its own, but when the truck appeared racing through I was well chuffed. It really helps with a sense of scale.
Olympus E3, 12-60mm SWD - F5.6, 1/40s
tornadostormssupercelltornado alleyoklahomamark humpageelemental project