By Published: May 26, 2015
Luke Meyers just recently published this time lapse video of a rather strange-looking lenticular cloud over Mt. Rainier last March. It's a good illustration of how they form -- the clouds look stationary but there's quite a bit of movement in them as air rises just enough to saturate, then dries enough as it sinks to "go invisible" again.
Here is another recent photo, taken by YouNews contributor "troxa41622511086":
Find out more about lenticular clouds here