Tornado paths range from 100 yards to 2.6 miles wide and rarely travel more than 15 miles, although some strong tornadoes on record have crossed through multiple states (e.g. the Tri-State Tornado of 1925). They can last from several seconds to more than an hour, but most don't exceed 10 minutes. Most tornadoes travel from the southwest to northeast with an average speed of 30 mph. However, observed speeds have been recorded between almost no motion and 70 mph.