As of February 13, 2015 the last recorded EF5 tornado struck Moore, Oklahoma on May 20, 2013.
The last F5 or EF5 tornado to hit the United States was on May 20, 2013 in Moore, Oklahoma. The last U.S. tornado to be rated F5 on the original Fujita scale (though EF5 is essentially the same rating) was the Bridgecreek-Moore, Oklahoma tornado of May 3, 1999.
Moore, Oklahoma has been struck by a number of significant tornadoes. The two most well-known and most destructive were an F5 on May 3, 1999 and an EF5 on May 20, 2013. Moore was also hit by an F3 tornado on November 19, 1973 and an F4 tornado on May 8, 2003. The last tornado to hit Moore was an EF2 on March 25, 2015.
As of June 2, 2013, the last confirmed tornado to affect Oklahoma appears to have been an EF0 on the north side of Moore on May 31. However, surveys are still underway, and more tornadoes from later that same day may be confirmed. The tornado was one of several that affected the Oklahoma City area on that day, including an EF3 that killed at least 7 people near El Reno.
The last time a tornado hit Oklahoma City was on May 6, 2015, as part of a severe weather outbreak in the region. The tornado caused damage in various parts of the city but no fatalities were reported.
As of May 3, 2012 the last tornado to hit Oklahoma was on April 30.
The last tornado to hit Seattle was in 1971.
Assuming you mean the F5 tornado that touched down in Oklahoma on May 3, 1999, that tornado lasted 1 hour and 25 minutes.
Oklahoma has been in the news recently due to the EF5 tornado that blew through there on May 20, 2013. Oklahoma is in the American Midwest. It borders Arkansas, Colorado, Kansas, Missouri, New Mexico, and Texas.
Toby Keith Covel,"The Big Dog Daddy",lives in Norman,OK.
April 2013
As of October 9, 2013, the last confirmed tornado in Ohio was an EF0 near the town of Byesville on September 12.