How many tornadoes have occurred in the last 100 years?

Answer 1

Unfortunately full records for 100 years of tornado data are not available. Official record keeping in the United States did not begin until 1950 and many countries do not keep official records even today. Even in the U.S. many of the weaker tornadoes were missed until about 20 years ago.
Since 1950 there have been just under 56,300 recorded tornadoes in the U.S.. Prior to that, accessible accounts give an estimate of about 6,000 tornadoes from 1916 to 1949 . Estrapolating this for the earliest few years this would probably gives us close to 64,000 recorded tornadoes for the U.S. in the past 100 years. However, if the more accurate counts from more recent years are any indicator, the actual number of tornadoes in the U.S. is probably at least twice this figure or more than 128,000.