Fewer homes would be destroyed in tornado-prone areas and we would not have storm cellars or tornado sirens. Severe thunderstorms would not be considered as dangerous as they are. Fewer people in the US would die from storms. Thunderstorms that would spawn tornadoes would expend their energy in some other way.
Trailer parks would last longer
Tornadoes can happen anywhere - they're usually formed from severe thunderstorms.
On averages there are 11 tornadoes in California a year.
Yes. The Phoenix area has had a few weak tornadoes.
Yes. About 42% of tornadoes happen at night.
Trailer parks would last longer
If two tornadoes come together they merge into one tornado.
Tornadoes can happen in any place that gets thunderstorms.
Tornadoes happen every year.
Tornadoes happen in Miami for the same reason they happen anywhere else. See the related question for how tornadoes form in general.
Tornadoes happen in Africa because of the mountains they have or because of the weather.
Tornadoes can happen in Ottawa. Canada does get tornadoes, though not as often as the U.S. due to its cooler climate.
Tornadoes can happen anywhere in the world except cold areas like Antarctica and the north pole. Tornadoes are mostly common in United States.
Most tornadoes in the U.S. happen in spring and early summer.
Yes, tornadoes can happen at any time as long as the weather is right.
Tornadoes happen in the summer every year.
Tornadoes can happen anywhere - they're usually formed from severe thunderstorms.