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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.
What else can I help you with?
What type of wind do tornadoes form from?
Tornadoes usually form from a type of thunderstorm called a supercell. Tornadoes themselves are a unique type of windstorm.
Do mostly tornadoes form in updrafts?
Entirely in updrafts. Tornadoes form in the updraft portion of a thunderstorm.
Can tornadoes form over water?
Yes. Tornadoes formed over water are called waterspouts.
Do tornadoes form in a cyclone?
No, tornadoes typically form in severe thunderstorms, not cyclones. Cyclones are large rotating weather systems that develop over warm ocean waters and can bring strong winds and rain, but tornadoes are more commonly associated with severe thunderstorms in a different type of weather system.
Where do tornadoes form a warm front or a cold front?
Tornadoes are more likely to form along a cold front, but they can occasionally form along a warm front. Many tornadoes form in an area called Larko's triangle, between a warm front and cold front. Some tornadoes form along a dry line, and in fact a try line can be more proficient at producing tornadoes than a cold front. Still other tornadoes form from tropical systems, which do not involve any sort of front.
Do you have to have rain to have a tornado?
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.
Can tornadoes form?
Yes, tornadoes can form. Hundreds, even thousands of tornadoes form every year.
Can a tornado happen without rain?
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.
Do tornadoes form on mountains?
Tornadoes can form in mountains, but most do not.
Do tornadoes form from stratus clouds?
No. Tornadoes form from cumulonimbus clouds.
Why do tornadoes not form in antarcica?
Antarctica is too cold for tornadoes to form. Tornadoes need energy from warm air.
Do tornadoes come form clouds?
Yes. Tornadoes form from the clouds of a thunderstorm.
Does tornadoes form by land or water?
Tornadoes most often form on land, but they can form over water.
Is various form of energy from tornadoes?
No it does not come from tornadoes . :] .....
What do thunderstorms have to do with Tornadoes?
Tornadoes need thunderstorms to form.
What kind of clouds to tornadoes form from?
Tornadoes mostly form from cumulonimbus clouds. :D
Are there different categories or types of tornadoes?
Yes. The Enhanced Fujita scale has six intensity categories ranging from EF0 for the weakest tornadoes to EF5 for the strongest. This identifies different levels of strength rather than actual types of tornado. As far as actual types, there are classic supercell tornadoes, which form from a larger mesocyclone, and weaker landspouts, which form as a result of processes beneath a thunderstorm.
