tornadoes 急~急~

1. A tornado is a violently rotating column of air which is in contact with both a cumulonimbus cloud or, in rare cases, a cumulus cloud base and the surface of the earth.

2. Tornadoes occur with thunderstorms. There are a couple of ways that
they form. Most strong and violent tornadoes occur with supercell
thunderstorms.

3. What do you mean?

4. Most occur in the United States.[4] They also commonly occur in southern Canada, south-central and eastern Asia, east-central South America, Southern Africa, northwestern and central Europe, Italy, western and southeastern Australia, and New Zealand

5. It can destroy everything like building, houses etc.

6. It can block moisture and atmospheric flow, allowing drier air at mid-levels of the troposphere, and causing cyclogenesis downstream to the east of the mountains.