List of F4, EF4, and IF4 tornadoes

Each year, more than 2,000 tornadoes are recorded worldwide, with the vast majority occurring in North America and Europe.

[1][2] In order to assess the intensity of these events, meteorologist Ted Fujita devised a method to estimate maximum wind speeds within tornadic storms based on the damage caused; this became known as the Fujita scale.

The National Weather Service in the United States did not rate any tornadoes prior to 1950.

Other organizations like the European Severe Storms Laboratory (ESSL) and Environment and Climate Change Canada (ECCC) on the other hand, did rate tornadoes prior to 1950.

Published academic papers or presentations at academically held meteorological conferences that rate tornadoes as F4/EF4/IF4 or present some evidence to support damage or winds in that category are also ways a tornado can be added to this list.