Tornadoes are one of the most deadliest types of weather, killing hundreds in minutes. What causes this weather phenomenon?
The first step for this amazing twister to form is when cold, dry and warm, humid air meet. When cold and warm air meet, the warm air moves upward and the cold air traps the warm air which causes it to rotate. Most of this action happens in the "Tornado Alley." The "Tornado Alley," is an area in the United States, where many tornadoes occur. States that are located in the "Tornado Alley," are Texas, Minnesota, Colorado, Oklahoma, Kansas, Iowa, South Dakota, and Nebraska. So many tornadoes occur in the "Tornado Alley," because that is where the cold, dry air from Canada meets the warm, moist, air from the Gulf of Mexico.
After the cold, dry and warm, humid air meet, and the warm air starts to rotate, a funnel cloud forms. The warm air, still rotating, gradually grows. Pretty soon, the warm air over powers the cold air, which then causes the cold air to go beneath the warm air. After this process is finished, a funnel cloud is born.
There is on more step before a tornado is officially created. Finally, the funnel cloud touches the ground, causing a tornado to be formed.
Bigger tornadoes for in a slightly different process. Super cells rotate with a large circulation. Once that process has started, the temperature changes around the edge of the downdraft air which is wrapping around the rotating air.
Tornadoes form with three major steps. The first step is that cold air meets warm air, causing the warm air to rotate. From there, a funnel cloud forms. The final step, is that the funnel cloud touches the ground.
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| Tornado Alley |
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