There have been 19 F4/EF4 tornadoes in February since 1950. This works out to an average of 0.3 each February or a little less than 1 F4 every 3 Februaries.
Typically, the greatest number of Minnesota tornadoes occur in June.
Based on data from 1991-2011 (when the number of tornadoes in the U.S. was accurately recorded) F4 and EF4 tornadoes averaged about 0.5% of all tornadoes.
Yes. The state has seen a number of major outbreaks with tornadoes as strong as F4.
There have been a number of tornadoes that have stuck St. Louis including a few F4 tornadoes. The most significant tornado to strike the city, which occurred on May 27, 1896 and killed 255 was an F4.
There have been many F4 and EF4 tornadoes. Tornadoes of this intensity have been known to hit the U.S., Canada, Mexico, The UK, Germany and are believed to have struck a number of others. The link below shows the locations of F4 and EF4 tornadoes in the U.S. from 1950 through 2010.
About 1.1% of tornadoes are rated F4, and less than .1% are rated F5.
A little more than 1% of tornadoes are rated F4 and F5 with F5 tornadoes being less than 0.1%
Oklahoma has had the most F4 and F5 tornadoes. Though it is tied with Texas, Iowa, and Alabama in terms of F5 tornadoes in the past 60 years.
There have only been 2 F4 tornadoes in Florida.
As will all years,the tornadoes of 1999 varied greatly in strength. Here is the breakdown of tornadoes in the U.S. by rating in 1999: F0: 830 F1: 323 F2: 122 F3: 51 F4: 12 F5: 1 The number of F3 and stronger tornadoes in 1999 was well above the average of the past 30 years.
Yes. There have been a number of tornadoes in Maryland. Most notable among these was the F4 that struck the town of La Plata on April 28, 2002.
There have been there have been 112 known F5 or EF5 tornadoes based on records since 1880. However, the number in older records is likely higher. It is very difficult to tell the difference between F4 and F5 tornadoes based on old records, and in the case of uncertainty an F4 rating is given.