Here is a video of a hail storm in Oklahoma that took place on May 16th. The video shows golf ball sized hail hitting the owner's swimming pool and create large splashes upon impact. The intensity of the hail really picks up about a minute into the video. The photographer apologized for the all OMGs. The photographer said, "This was the most insane hail storm or storm in general I have ever seen! it was may 16th 2010. Sorry about all of the oh my Gods. I was just in shock."
