A wonderful picture of a wave-form cloud in the sky over Huntington Beach, California, on May 07, 2014.
A similar cloud was captured in October 2012, in the same city as shown in the video below:
As explained in the video information, this rare and fantastic “Roll Cloud” stretched across the the entire length of Orange County, California, USA on April 25, 2012. It was reported from Huntington Beach, CA, to Laguna Beach making its way south. It looked like a giant wave or Tsunami sweeping over from horizon to horizon, similar to the alien ships in the beginning of Independence Day.