What causes tornadoes?

Question

What causes tornadoes?

Answer 1

"over the oceans"? What about tornadoes over the land?

Tornadoes are caused by rotating masses of air in a thunderstorm. Sometimes, a huge rotating mass of cloud will form, called a supercell. It's cause by warm air rising up into the thunderstorm. If there's an oncoming flow of air, it will squeeze the supercell and speed up its rotation. This will eventually form a tornado.

Answer 2

rosie odonnell gasping for air. hahahaha

Answer 3

Hot and cold air mixing together over the oceans.

Answer 4

Supercells, which are long-lasting, large thunderstorms are responsible for most strong tornadoes. They are most likely to form in areas where winds at different levels of the atmosphere are coming from different directions. Normally winds near the surface are coming from the south or southeast, feeding warm humid air into the area. Dry wind from the southwest around 10,000 feet from the ground helps add energy to thunderstorms.

Finally, supercells are likely under the area where generally west-to-east jet stream winds are speeding up. Even though the jet stream is 25,000 feet or higher above the ground, it helps pull air upward, increasing the thunderstorm's violence.

Tornadoes form in the air rising into a thunderstorm, in the updraft. The strongest tornadoes are often near the edge of the updraft, not far from where air is descending from the thunderstorms.

More at the link.

Answer 5

when cold and hot air come togheter and twist over the ocean

Answer 6

wind

Answer 7

a low pressure front and a high pressure front overlapping

Answer 8

Atmospheric phenomenoms when variating temperatures collide.!

Answer 9

wind, ya plonker!