On Jan 14, 4:17*pm, smithcorp wrote:
On Jan 15, 2:56*am, Jim Meade wrote:

Here is an interesting story on an undular bore or atmospheric bore
over Iowa in 2007. *Click on the graphic to see a time-lapse sequence
of the clouds. *Check out the Nexrad radar graphic. *Very interesting.

http://science.nasa.gov/headlines/y2...ndularbore.htm

Thanks Jim for the fascinating link.

further graphics and commentary on the Iowa event at:
http://www.jamesspann.com/wordpress/?p=3758