murray
25-05-2006, 01:11 PM
The clouds are called Mammatus clouds. They do not precede a tornado, or foretell a storm, but are formed when the air is already saturated with rain droplets and/or ice crystals and begins to sink. The worst of the storm is usually over when these kinds of clouds are seen.
These pics taken in Hastings, Nebrasksa, USA.
http://forums.permaculture.org.au/images/mammatus1.jpg
http://forums.permaculture.org.au/images/mammatus2.jpg
http://forums.permaculture.org.au/images/mammatus3.jpg
http://forums.permaculture.org.au/images/mammatus4.jpg
These pics taken in Hastings, Nebrasksa, USA.
http://forums.permaculture.org.au/images/mammatus1.jpg
http://forums.permaculture.org.au/images/mammatus2.jpg
http://forums.permaculture.org.au/images/mammatus3.jpg
http://forums.permaculture.org.au/images/mammatus4.jpg