Tsunami Clouds

[NorCal Dan]

http://ca.news.yahoo.com/giant-tsunami-shape-clouds-roll-across-alabama-sky-192102289.html

Makes me wonder what weather conditions would produce these ground clouds...nature sure is amazing...

[ve3gsi]

Hi Dan
There is a similar pattern in one of my weather books, they maybe a variation of the Kelvin-Helmholtz waves. 
My dial-up connection does not allow for efficient surfing, maybe you will have better luck verifying my book.
Eric.

[Scalphunter]

Wind shear at high level for the layman understanding

[kimhumpries]

Once again nature provides the best art.

[Weather Display]

There is a similar pattern in one of my weather books, they maybe a variation of the Kelvin-Helmholtz waves. 

yes , along those lines
Have seen them here even

[travfare]

High Rise Condo Cloud Tsunami in Florida,

http://photoblog.msnbc.msn.com/_news/2012/02/10/10375026-spectacular-cloud-tsunami-rolls-over-florida-high-rise-condos

[KeithW]

High Rise Condo Cloud Tsunami in Florida,

http://photoblog.msnbc.msn.com/_news/2012/02/10/10375026-spectacular-cloud-tsunami-rolls-over-florida-high-rise-condos

Nice!

-Keith