Clouds on my Mind

I've had my eyes skyward lately and last night was no exception. After photographing prairie flowers at the state park it was time to work on time-lapse cloud sequences.  While waiting for the 15 minutes of images this was shot with the iPhone which is usually used to prevent me from shutting down the time lapse sequence prematurely.  If you are interested in reading about clouds and would like to see unique images check out: Cloud Appreciation Society.