The classic answer for how tornado form states that warm and cold air come together and swirl up, or something to that effect.
Many tornadoes are associated with cold fronts (where cooler air pushes into warmer air) and on occasion are associated with warm fronts (where cold air retreats and warm air comes in. However the front is not the direct cause of the tornado. The front lifts the warmer air which, if there is enough instability, can trigger thunderstorms. Given a few other conditions such as wind shear these storms can start to rotate and potentially produce tornadoes.
However, these storms do not necessarily form along a warm or cold front. Many tornadic thunderstorms form along a dry line, where dry air pushes into moist air with relatively little temperature difference. In fact a dry line is often better at producing tornadic storms than a cold front is. Tornadoes can also form in the thunderstorms generated by tropical cyclones (hurricanes, tropical storms etc.) where there are no notable boundaries such as those discussed above. On rare occasions tornadoes can form with thunderstorms that develop in the absence of an organized system. However such tornadoes are short lived and weak.
tornadoes can form every where
Most tornadoes form from thunderstorms along a front associated with a cyclone, but most cyclones do not produce tornadoes.
Tornadoes usually form from a type of thunderstorm called a supercell. Tornadoes themselves are a unique type of windstorm.
Entirely in updrafts. Tornadoes form in the updraft portion of a thunderstorm.
Guam has been the site of tornadoes before. Tornadoes can form anywhere cold and warm air collide, causing an imbalance in air pressure.
Yes. Some tornadoes form in low precipitation or LP supercells, which produce little to no rain. Additionally, many tornadoes that form in "classic" supercells often occur in a rain-free section of the storm.
Not necessarily. Some tornadoes are produced by LP (low precipitation) supercells, which produce little or no rain. Even in classic supercells tornadoes typically form in a rain-free section of the storm.
Yes, tornadoes can form. Hundreds, even thousands of tornadoes form every year.
Yes. Tornadoes form from thunderstorms.
Tornadoes form from the sky.
Tornadoes can form in mountains, but most do not.
No. Tornadoes form from cumulonimbus clouds.
Yes. Tornadoes form from cumulonimbus clouds.
When thunderstorms occur with strong, intense winds. tornadoes form when those winds start to rotate tornadoes form
Antarctica is too cold for tornadoes to form. Tornadoes need energy from warm air.
Tornadoes can only form during thunderstorms.
Yes. Tornadoes form from thunderstorms, usually supercells.