Giant methane storms on Uranus

Giant methane storms on Uranus:
"Most of the times we have looked at Uranus, it has seemed to be a relatively calm place.
...However, all we have previously known about the atmosphere of Uranus has been 'thrown to the wind' with observations made last year.
In August 2014 a group led by Imke de Pater pointed the Keck telescope at Uranus and were a little bit surprised to see storms raging.
It wasn't as though clouds haven't been seen before, but the clouds they spotted last year were very much brighter than any seen before.
The fact that the storms are bright in the methane spectrum isn't a surprise – Uranus, and its neighbour Neptune, are pretty much just big balls of methane, water and ammonia (but it does make for a snigger-worthy headline)."