Portal:Tornadoes/Anniversaries/July 21

July 21
 * 1983 – A small tornado outbreak hit the Northeastern United States. An F2 tornado caused significant damage near Hartly, Delaware, killing two people and injuring nine. Another F2 tornado moved through Saugatuck, Michigan, creating a wall of water as it crossed the Kalamazoo River, drowning one person. An F3 tornado caused major damage in Stafford, New Jersey.
 * 1987 – An F4 tornado moved through portions of the Teton Wilderness and Yellowstone National Park, destroying about 15,000 acres of trees but causing no human injuries or deaths. The tornado struck forests at elevations of 8500 to 10000 ft, the highest altitude at which a violent (F4 or F5) tornado has been recorded in the United States. It was also the strongest tornado on official record in Wyoming.