One of the most commonly used weather terms during the spring and summer months is "supercell thunderstorm." Most weather enthusiasts (myself included) use the term with the assumption that people know what a supercell is, but many people don't. Supercells are the miniature engines of Earth's atmosphere. They're fascinating to watch both on radar and in person, but they're also responsible for the most destructive tornadoes in history.
The media can't survive without a scare term to make you tune in. This winter saw the not-at-all-new-but-scary-sounding polar vortex. Sandy wasn't really a "superstorm" but hey, let's just call it one anyway. And every summer for the last few years, we've seen the derecho. It sounds new and terrifying, but what is it?