Another strange hole in the cloud, reported from Mobile, Alabama USA, Dec. 2003 (and covered by BBC News):

Photo taken in Melbourne, Australia in 2003:

...that make our sky worthy to look at from time to time (those who only look at the computer monitor, take note). Here is an extremely strong thunderstorm cloud that brewed over northwest Calgary:

Another supercell cloud in Alberta skies, this time over Edmonton:

Another cloud "wave", similar to the one over South Dakota Badlands (see here):

Roll clouds... get into a small plane and start "surfing" them! -