This squall comes due north along side the beach one February afternoon. We are in our ocean front unit on the 19th floor at Oceana Palms with friends. I notice dark clouds & walk onto our balcony to take a look at the sky when I notice this squall approaching ( it was fast moving and blows in real fast ). I grab my camera and capture still images and video of the entire squall.

That's a big wall of water coming out of those clouds which I estimate is moving at a good 35-40 moh. Small boats were speeding along, but none of them were going to out run this thing. It's less than a minute from when I take this picture to when the wall of water is atop us. There's rotating winds in that cloud which obscures everything so that you could not even see the edge of the ocean below you.