Since official record keeping began in 1950, there have been 58,009 tornadoes recorded in the U.S. The actual number of tornadoes is likely much higher though, as in the early part of this period we missed many of the weaker tornadoes.
Modern records suggest the U.S. averages between 1,200 and 1,300 tornadoes per year. This suggests that more than 75,000 tornadoes ocurred in this time period, and likely more than 80,000.
The Tri-State tornado of March 18, 1925. The tornado killed 695 people, 613 of them in Illinois.
The worst tornado in U.S. history was the Tri-State tornado of March 18, 1925. This F5 tornado carved a 219 mile damage path across parts of Missouri, Illinois, and Indiana, killing 695 and injuring over 2,000.
As of January 17, 2013 the last tornado in the U.S. was an EF1 near Poplarville, Mississippi on January 13. It was one of four weak tornadoes to occur in the southern U.s. that day.
The first recorded tornado in the US was in Rehoboth, Massachusetts in August of 1671.
1925. There were 794 tornado deaths in the U.S. that year, 695 from a single tornado.
The tri-state tornado hit the states of Missouri, Illinois, and Indiana in the US.
Tornadoes hit the U.S. every year.
about 4 times
That would be 3 hence the "tri" MO, IL & IN
As of November 23, 2015 the last fatal tornado in the US killed one person near Cameron, Texas on May 25. It was rated EF2.
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.
Tornado Alley.
Mississippi has experienced three of the top 25 deadliest tornadoes in US history, according to data from the Storm Prediction Center. These are the Tupelo-Gainesville tornado of 1936, the Natchez tornado of 1840, and the Yazoo City tornado of 1844.
The deadliest tornado to hit the U.S. tore across portions of Missouri, Illinois and Indiana on March 18, 1925, killing 695 people.