Weather and Sky Gallery :: Thunderstorms
	Towering cumulus over Boulder, Colorado.		Arcus cloud in northern Colorado.
	Hailstorm over Denver, Colorado, and smoke plume drawn into updraft.		Cumulonimbus mammatus over Boulder, Colorado.
	Cumulonimbus over Eldorado Springs, Colorado.		Cumulonimbus with horizontal vortex in anvil region.
	Developing cumulonimbus east of Boulder, Colorado.		Dissipating cumulonimbus over Pawnee Grasslands, northeast Colorado.
	Towering cumulus over Florida Keys.		Cumulonimbus mammatus over eastern Colorado.
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