Never heard of mammatus clouds. I've never seen anything like them in my life. Gorgeous! Scary!
Here's the explanation of what they are and why they take that form.
(via Norm)
Posted by sheilaAround here, they're usually a sign that you're in for a long night of storm-watching.
Which I always love!
Posted by: mitch at July 17, 2005 9:51 PMVery cool. I grew up not far from Hastings, Nebraska where these were photographed.
Posted by: Carl V. at July 17, 2005 10:49 PM