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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.
What else can I help you with?
Can a plane start a tornado?
No. A plane cannot start a tornado.
Can a tornado start on a hill?
Yes. A tornado can start on a hill just as easily as it would on a plain.
Does a fire tornado start with a fire on the ground or does the fire come down with the tornado or start from lightning?
The "fire tornado" forms from the fire; it doesn't really matter how the fire starts. Also, a "fire tornado" is more properly called a fire whirl as it technically isn't a tornado.
How can humans start a tornado?
Humans cannot start tornadoes.
When did they start using the word tornado?
The first known use of the word "tornado" was in 1556.
Can a thunder storm start a tornado?
Yes, in fact a thunderstorm is the only thing that can produce a tornado.
What is the lifespan of a typical tornado from start to finish?
A typical tornado lasts 1-5 minutes.
What is the name of the tornado that start with the letter T?
Twister
Where to go if there is a tornado?
Out of its way would be a good start.
In simplest terms how is a tornado formed?
Thunderstorms form and start rotating. This rotation can then tighten asn intensify into a tornado.
When did Katrina tornado start?
There was never a "Katrina tornado"Hurricane Katrina first formed on August 23, 2005.
What weather words start with a t?
· temperature · thunder · thunderstorm · tornado · tornado alley · trade winds · turbulence · typhoon
