Helicopter pilot Mike Schaeffer was wrapping up a tour when he spotted this incredible weather phenomenon along the coast of Panama City Beach, Fl. on Sunday.

As soon as he landed, he alerted Panhandle Helicopter owner JR Hott of the "cloud form waves," and together they went up for a better view. They moved quickly knowing that it is only in very specific weather conditions that this beautiful effect occurs. While the online community has dubbed this a "cloud tsunami," Hott disagrees with the popular moniker:
I wouldn't call it a "cloud tsunami." The term tsunami implies a natural disaster. The event, while it can form quickly, moves gently and slowly. It isn't something that happens with more than a gentle breeze.
Meteorologist Dan Satterfield explains this occurrence on his blog:

Cool air offshore was very nearly at the saturation point, with a temperature near 20ºC and a dew point of about 19.5ºC. The air at this temperature can only hold a certain amount of water vapor, and how much it can hold depends heavily on the temperature. If you add more water into the air, a cloud will form, but you can also get a cloud to form by cooling the air. Drop the temperature, and it can no long hold as much water vapor, so some of it will condense out and a cloud will form.