What causes tornado wind speeds to increase? PLEASE ANSWER QUICK!?
While the two previous responses give you excellent and true information about mechanics of cyclonic systems, there is a simple answer to your question. That answer is pressure differential. The ONLY cause for wind of any type is pressure differential. Always. Wind flows from high pressure to low pressure. For tornado winds to increase, the tornado cell must decrease its pressure relative to the surrounding atmosphere. Hurricanes, which are a large heat engine, work the same way. For the maximum sustained winds of a hurricane to increase, the rising heat at the core, or eye, must create a low pressure cell relative to the surrounding area. The lower the pressure, the more dramatic the gradient, and the more powerful the hurricane. Hurricanes, however, are more complex than tornadoes, an are affected by external weather patterns as well.
