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This best seems to describe a multiple vortex tornado. This is a tornado that has smaller vortices, called suction vortices, circling inside the main vortex. The development of such a tornado is complicated. Let's start with a single vortex tornado. Contrary to popular belief the strongest winds in a tornado are at the edge of the funnel rather than at the center. However, the lowest pressure in a tornado is at the center. While air mostly moves up in a tornado, in some especially strong ones, the low pressure causes a downdraft to move down the center of the tornado. This is a process called vortex breakdown. When this downdraft reaches ground level the air must move outward, but it soon meets the air flowing into the tornado. This interaction creates and area of very strong convergence where the inflow and outflow meet, and some of the tornado's angular momentum gets converted into smaller vortices within the main circulation.
These suction vortices create looping swaths of more severe damage within the main damage path.
What else can I help you with?
Do tornadoes form on mountains?
Tornadoes can form in mountains, but most do not.
What do hurricanes and tornadoes form over?
Hurricanes form over warm ocean water. Tornadoes can form just about anywhere.
Do tornadoes form around 3PM and 9PM?
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.
Do tornadoes normally form in tropical oceans?
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.
When do tornadoes not form?
Tornadoes do not form under clear, sunny, or stable weather conditions, of if the weather is too cold. They cannot form without thunderstorms.
Can tornadoes form?
Yes, tornadoes can form. Hundreds, even thousands of tornadoes form every year.
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
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 tornadoes form in Antarctica?
While they happen everywhere else, tornadoes are not known to form in Antarctica.
Do mostly tornadoes form in updrafts?
Entirely in updrafts. Tornadoes form in the updraft portion of a thunderstorm.
