It is impossible to make such predictions. For a general region the threat of tornadoes can be predicted a few days in advance, mostly for major events and even then there is a lot of uncertainty. Minor events are even more difficult. For a specific location, we often don't know if there is a tornado until reports of damage or sightings come in.
Yes. Tornadoes hit the U.S. in every month and hundreds hit the U.S. every year. It is inevitable that there will be more. However there is no way of knowing where or when they will hit.
The tri-state tornado hit the states of Missouri, Illinois, and Indiana in the US.
Tornadoes hit the U.S. every year.
The infamous Waco tornado occurred on May 11, 1953. It is unknown when a tornado might hit Waco again.
The worst (or at least the deadliest) tornado to hit the U.S. was the Camilla, Georgia tornado of February 13, which killed 11 people.
The Tri-State tornado of March 18, 1925. The tornado killed 695 people, 613 of them in Illinois.
The highest elevation tornado on record in the US was an F0 that hit Sequoia National Park on July 7, 2004. It was recorded at an elevation of 12,000 feet.
There were hundreds of tornadoes in the US in 2011. Some of the most notable ones include an EF4 that hit Vilonia and Mayflower, Arkansas on April 27, killing 16. The next day another EF4 hit Louisville, Mississippi, killing 10. On June 16, yet another EF4 tornado destroyed half the town of Pilger, Nebraska.
That would be 3 hence the "tri" MO, IL & IN
The deadliest tornado to hit the U.S. tore across portions of Missouri, Illinois and Indiana on March 18, 1925, killing 695 people.
The worst tornado in U.S. history was the Tri-State tornado of March 18, 1925. The tornado first formed north of Ellington, Missouri. The tornado devastated numerous towns in Missouri, Illinois, and Indiana along a path 219 miles long.
As of November 9, 2012 the last large tornado to hit the U.S. occurred northwest of the town of Newton, Mississippi. The tornado was rated EF3 and got up to half a mile wide.