Since the National Weather Service began keeping records in 1950 there have been about 13,000 tornadoes recorded in the United States in May. The actual number is probably much higher as many of the weaker tornadoes were missed in the earlier part of this period.
Global statistics are not available. Based on a preliminary count, there were 186 tornadoes in the United States in May 2013.
There were 94 tornadoes in Alabama in 2008.
15 tornadoes occurred in Michigan in 2011.
There were 105 tornadoes in Iowa in 2008.
There were 1,103 tornadoes in the U.S. in 2006.
There were 20 tornadoes in Ohio in 2014.
There were 16 confirmed tornadoes in Arkansas in 2007.
There were 1,817 tornadoes recorded in the U.S. in 2004.
The U.S. had 1075 confirmed tornadoes in 2000.
65 tornadoes occurred in North Carolina in 2011.
There were 1374 tornadoes confirmed in the United States in 2003.
1,282 tornadoes occurred in the US. in 2010, with an unknown number worldwide.