May 23, 2013
After the EF5 tornado tore through Moore, OK Monday I was doing some searching around for data and came across some interesting stuff. Iowa ranks tied for second with the six F5/EF5 tornadoes behind Oklahoma and Alabama with 7.

# of F5/EF5 Tornadoes Per State
7 Oklahoma
7 Alabama
6 Iowa
6 Kansas
6 Texas
4 Ohio
4 Mississippi
Here is a map showing the location and path of the 6 tornadoes.

This is how they are listed by the Storm Prediction Center for Iowa:
June 27, 1953 Adair
October 14, 1966 Belmond
May 15, 1968 Maynard
May 15, 1968 Charles City
June 13, 1976 Jordan
May 25, 2008 Parkersburg
There have been 59 F5/EF5 tornadoes (including Moore, OK) since good record keeping began in 1950.
There have been 7 EF5 tornadoes in the last 3 years. The 7 previous F5/EF5 tornadoes came in a 12 year period.
The southern most F5 tornado was on May 27, 1997 in Jarrell, TX.
The northern most F5 tornado was on June 20, 1957 in Fargo, ND.
The eastern most F5 tornado was on May 31, 1985 in Niles, OH
The western most F5 tornado was on May 11, 1970 in Lubbock, TX.
The winds are estimated to be 200+ mph in an F5/EF5 tornado.
Posted under Severe Weather