SGC - The chap who started the Cloud Appreciation Society (Gavin Pretor-Pinney ?) has recently had a new classification of cloud named after him.
I must admit that the 'Tempest' reference went right over my head (if you pardon the pun) until the next day. I was fixated on looking at the dark radiator intake shape. We all missed the oportunity to be witty about Typhoons, and Whirlwinds... oh, wait, that was a twin.