It s the spot where competing up and down air drafts cancel each other out. This is the eye of the storm. A portion of the United States, stretching roughly from Texas to Nebraska and Iowa, which receives the most tornadoes annually. In America there is even a place called tornado alley. A radar system that utilizes the Doppler effect for measuring wind velocity.
Scientists know a tornado is forming when they spot a particular shape on the radar screen.
This is what a storm looks like on Doppler Radar. When pockets of air are warmed up by the sun, they rise. The higher the pocket gets, the cooler it gets. This process causes the water vapor in the air to condense onto dust particles and turn back into the water droplets, which form clouds. With a device that s over 200 years old.