As a meteorologist I am always fascinated by time-lapse videos of clouds moving.  They really show that the atmosphere is a fluid not much different than water.  This week I ran across two beautiful examples that really capture this.

The first one is a video of a sky covered by a cloud type called Undulatus Asperatus.  You can see the video at  This was taken by by Alex Schueth on July 7, 2014 over Lincoln, Nebraska.

The second video is a compilation of time lapse videos of storms in the Desert Southwest showing the shafts of rain falling out of the thunderstorms during the North American Monsoon, which occurs during the summer months.  You can see the video along with an explanation of it at the CoCoRaHS blog site at  Be sure to expand the video and turn up the sound for the full effect.