cold fjord writes: The CS Monitor reports, "A thunderstorm bigger than our planet churned Saturn's atmosphere like an egg beater, reaching deep into Saturn's gassy interior and flinging water up to the ammonia-gas cloudtops.
... From December 2010 through August 2011, a superstorm raged across Saturn. The storm moved west, leaving behind a wake so enormous that ultimately the head collided with its own tail, encircling the giant gas planet with a belt of turbulence over 9,000 miles wide and 190,000 miles long. And in studying it, scientists found water. This massive thunderstorm – the head alone was bigger than planet Earth – churned Saturn's atmosphere like an egg beater, reaching deep down into Saturn's gassy interior, finding water vapor, and flinging it up with "hundreds of miles per hour of upward motion ... Scientists have suspected for years that water vapor must be hiding in Saturn's lower atmosphere, but finding proof was tricky. "As far as water in measurable quantities, at the level of the visible cloud tops – this is the first indication," says Dr. Sromovsky. The first scientists who studied the storm noted its size and power, but missed the scent of water. " More at Universe Today.