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from 99TravelTips

101 Most Beautiful Places To Visit Before You Die! (Part III)

Sunlight bending through ice crystals in cirrform produces bands of color called Sundogs ~ the air turns the sky red at mid-day and purple at sunset. atmos.ed.com

from Telegraph.co.uk

Adventures in Tornado Alley

But when a storm arrives, the results can be awe-inspiring. This thunderstorm is a supercell, the largest, most severe class of thunderstorms. The photographer describes this picture as one of his all-time favorites.

"Sprites are a true space weather phenomenon," explains lightning scientist Oscar van der Velde of Sant Vicenç de Castellet, Spain. "They develop in mid-air around 80 km altitude, growing in both directions, first down, then up. This happens when a fierce lightning bolt draws lots of charge from a cloud near Earth's surface. Electric fields [shoot] to the top of Earth's atmosphere--and the result is a sprite. The entire process takes about 20 milliseconds." (Thunderheads are below the…