The F5 tornado that hit Oklahoma City on May 3, 1999 killed 36 people. On the same day, 3 other killer tornadoes struck Oklahoma, killing an additional 4 people.
That tornado killed 36 people alone in Oklahoma city and 50 in the 1999 outbreak
The Moore, Oklahoma tornado of May 20, 2013 killed 24 people. A tornado in Shawnee, Oklahoma the day before killed 2 people.
The Moore, Oklahoma tornado of May 20, 2013 killed 23 people. One other person died from causes not directly related to the tornado.
There were 78 tornadoes in Oklahoma in 2003, none of which resulted in any deaths.
The 2013 El Reno tornado killed 8 people.
The Lone Grove, Oklahoma tornado of February 10, 2009 killed 8 people. Other tornadoes hit Oklahoma in 2009, but none resulted in any deaths.
There were numerous tornadoes in Oklahoma in 2013, three of which were killers. The Shawnee EF4 tornado of May 19 killed 2 people. The Moore EF5 tornado of May 20 killed 24 people. The El Reno EF3 tornado of May 31 killed 8 people.
There were 3 tornado deaths in the U.S. on May 10, 2010 from 2 separate tornadoes. The first was an EF4 that went through the suburbs on the southern and eastern sides of Oklahoma City, killing 2 people. The second tornado was also an EF4. It formed south of Norman and killed 1 person.
There were four tornadoes in Oklahoma in March of 2012, none of which resulted in any deaths.
In the United States tornadoes killed 53 people in May of 1999. 36 of them were killed by a single tornado on May 3.
The Xenia, Ohio tornado of 1974 killed 32 people directly. Two others died from indirect effects of the tornado.
The Kirksville, Missouri tornado of May 13, 2009 killed 2 people.