The formation of tornadoes is complicated.
First, a condition called wind shear, in which the speed or direction of the wind changes with altitude. If the shear is strong enough it can essentially tilt a thunderstorm, this separates the updraft and downdraft of the thunderstorm, preventing them from interfering with one another. This allows the storm to become stronger and last longer.
Additionally, if the wind shear is strong enough it can start the air rolling in what is called horizontal vorticity. This horizontal vorticity can then be turned vertical by a thunderstorm's updraft. When this happens, the thunderstorm may start rotating. The rotation is especially strong in an updraft called a mesocyclone. If the storm intensifies rapidly enough, a relatively warm downdraft called a rear-flank downdraft or RFD can wrap around the bottom part of the mesocyclone. This can then tighten and intensify its rotation and bring it down to the ground to produce a tornado.
As to their affects, the wind and flying debris in a tornado can damage or destroy vegetation and man-made structures, sometimes to the point of complete obliteration. People and animals caught in a tornado may be injured or killed.
Tornadoes can form in mountains, but most do not.
Hurricanes form over warm ocean water. Tornadoes can form just about anywhere.
Tornadoes can form at any time of day or night. The time from 3 PM to 9 PM is the most common time for tornadoes to form.
No, tornadoes typically form over land in association with thunderstorms. Waterspouts, which are tornadoes that form over water, can occur in tropical oceans under specific conditions, but they are generally much weaker than tornadoes that form over land.
Tornadoes do not form under clear, sunny, or stable weather conditions, of if the weather is too cold. They cannot form without thunderstorms.
Yes, tornadoes can form. Hundreds, even thousands of tornadoes form every year.
Tornadoes can form in mountains, but most do not.
No. Tornadoes form from cumulonimbus clouds.
Antarctica is too cold for tornadoes to form. Tornadoes need energy from warm air.
well tornadoes can badly damage or destroy parts of communities
Yes. Tornadoes form from the clouds of a thunderstorm.
Tornadoes most often form on land, but they can form over water.
Tornadoes can destroy the homes of people and animals and can kill or injure them.
No it does not come from tornadoes . :] .....
Tornadoes need thunderstorms to form.
Tornadoes mostly form from cumulonimbus clouds. :D
Tornadoes usually form from a type of thunderstorm called a supercell. Tornadoes themselves are a unique type of windstorm.