How do tornados start, and how do they end?

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How do tornados start, and how do they end?

In: Physics

**Start:** Most tornadoes form from thunderstorms. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these two air masses meet, they create instability in the atmosphere. A change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere. Rising air within the updraft tilts the rotating air from horizontal to vertical. An area of rotation, 2-6 miles wide, now extends through much of the storm. Most strong and violent tornadoes form within this area of strong rotation.

**Finish:** Tornadoes are able to die off when they move over colder ground or when the cumulonimbus clouds above them start to break up.

• *https://www.wfmz.com/weather/how-do-tornadoes-die_20160526093008828/16506105*

• * https://www.weatherwizkids.com/weather-tornado.htm*