when there is a severe thunderstorm
Most tornadoes are supercell tornadoes.
Tornado in the U.S. most frequently occur on the Great Plains.
Tornadoes most frequently form on the Great Plains in the United States.
Tornadoes can occur in any part of Virginia, but most frequently happen in the eastern part of the state.
Tornadoes occur the most in Tornado Alley, a region in the United states that includes Texas, Kansas, Oklahoma, Nebraska, Missouri, South Dakota and Iowa. While tornadoes can occur elsewhere, nowhere else in the world do they occur more frequently.
Tornadoes can happen at any time of year but occur most frequently in spring an early summer.
Oklahoma averages about 65 tornadoes per year, though they are not evenly distributed throughout the year. Tornadoes tend to occur in outbreaks which hit Oklahoma most frequently in the spring.
Most tornadoes occur in spring.
Yes. In fact tornadoes occur fairly frequently in Argentina.
More in the afternoon because that is when the air is warmest and thus has the most energy to power storms.
Tornadoes occur frequently in Florida and Texas, but are rare in Nevada.
Although tornadoes occur in all states, the state with the most tornadoes is Texas.