In this stunning capture by Gonzalo G. Useta, we see a massive shelf cloud off the coast of Montevideo, Uruguay. A shelf cloud is a low, horizontal, wedge-shaped Arcus cloud. They are typically attached to the base of a parent cloud, which is usually a thunderstorm, but could form on any type of convective cloud.
Picture of the Day: The Ocean TornadoIn this amazing capture by Joey Mole, we see a waterspout near Tampa Bay, Florida. According to NASA, the Atlantic Ocean off the coast of Florida is arguably the most active area in the world for waterspouts. 空島に行ける？