page_title: Tornadoes of 2010
section_title: July 21–24
hierarchical_section_title: Tornadoes of 2010 / July / July 21–24
caption_attribution_description: English: A record-setting hailstone that fell in Vivian, South Dakota on July 23, 2010. The hailstone broke the United States records for largest hailstone by diameter (7.9 inches) and weight (1 pound 15 ounces).
context_page_description: This page documents the tornadoes and tornado outbreaks of 2010. The majority of tornadoes form in the U.S., but they can occur almost anywhere under the right conditions. A lesser number occur outside the U.S., most notably in parts of neighboring southern Canada during the Northern Hemisphere's summer season, but are also known in South America, Europe, Asia, and Australia.
  There were 1,282 tornadoes confirmed in the United States in 2010, with 45 confirmed fatalities. Elsewhere in the world, 62 people were killed in tornadoes: 51 in China, six in Argentina, three in the Bahamas and one each in Bangladesh and Germany. The year was near average for tornadoes despite an extremely quiet early spring period, however such changed after a huge upswing starting in late April and a busy late spring and summer period. The autumn months were slightly above average.
context_section_description: Several stalled fronts across a large swath from the Upper Midwest to New England resulted in an active stretch of weather. In addition to extensive wind damage, numerous tornadoes were reported on both days. The strongest on July 21 were rated EF1. More tornadoes touched down on July 22, with the greatest concentration in southern Wisconsin. An EF2 tornado was reported in Waukesha County, Wisconsin with significant damage. There were three confirmed EF1 tornadoes which affected southern Maine. The towns of Alfred, Limerick, Buxton, and Gorham experienced heavy tree damage and some structural collapses. No injuries were reported. The tornadoes ranged from 200–250 yds in width. The Buxton/Gorham tornado traveled around 5 miles, collapsing a barn and killing two cows, before dissipating. 
  On July 22 tornadoes two tornadoes touched down in Calhoun County, Michigan, both by Battle Creek. Tornado sirens were sounded across the county, and damage included the roof torn off of a mobile home. These storms triggered tornado warning across the southern portions of the state was they moved west. A tornado watch was put in effect for the rest of the evening in southern Michigan, and a tornado warning was issued in the early hours of July 23 for southeast Calhoun County and southwest Jackson County.
  Over the following days, more tornadoes touched down, including two EF2 tornadoes in western New York and another EF2 tornado in Honesdale, Pennsylvania. Several people were injured by those tornadoes. In addition, on July 23, the largest hailstone ever recorded in the US fell in Vivian, South Dakota alongside a weak tornado. The hailstone measured 8 inches (20 cm) in diameter.
caption: Record hailstone near Vivian, South Dakota
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