There are no specific temperatures at which a tornado occurs. They typically occur with temps in the 60s and 70s, but can occur at warmer or much cooler temps. The main aspect is not what the temperature is, but how much instability (availability for rising air) and wind shear (change in wind direction and speed with height in the atmosphere) is present.
Tornadoes can happen in any place that gets thunderstorms.
Tornadoes happen in Miami for the same reason they happen anywhere else. See the related question for how tornadoes form in general.
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.
Yes. Tornadoes, including some significant ones, can and do happen the the Philippines.
Tornadoes happen in the summer every year.
Most tornadoes in the U.S. happen in spring and early summer.
Tornadoes can happen anywhere - they're usually formed from severe thunderstorms.
Sicily Tornadoes happened in 1851.
well tornadoes can happen anywhere any time so yes
Tornadoes happen in all seasons but are most common in the spring.
Tornadoes do not happen IN the Gulf of Mexico. Tropical storms and hurricanes happen in the Gulf of Mex, but not tornadoes. Tornado-like features over water are called waterspouts.