A week of wild waterspouts produced several astonishing videos across the globe — from ropelike waterspouts dancing harmlessly over European waters to one that ran aground and briefly spun into a tornado, sending beachgoers scrambling for safety. There are two dominant types of waterspouts — supercell waterspouts and what are often called “fair-weather” waterspouts. Supercell waterspouts are associated with strong, rotating thunderstorms and share many characteristics with twisters that form on