For all of you, who'd like to model the cloud shape of a hurricane in 3d, here is a series of pictures from within 'Katarina':
http://www.spiegel.de/fotostrecke/0,5538,PB64-SUQ9MTExODAmbnI9MQ_3_3,00.html
Please notice that all images are made at an alditude of 1,700 meters, while the cloud top seen is at an altitude of 15,000 meters - a hurricanes eye does look much more like a flat bowl than like a deep hole.
maxim