No. While strange colors have been reported before or during a tornado, such phenomena are not directly linked with tornadoes, nor are they necessary for tornadoes to occur.
Yes. Tornadoes form from cumulonimbus clouds.
No. Tornadoes form from cumulonimbus clouds.
Yes. Tornadoes form from the clouds of a thunderstorm.
Tornadoes mostly form from cumulonimbus clouds. :D
Tornadoes are a product of thunderstorms, which take the form of cumulonimbus clouds.
No. Tornadoes only form with thunderstorms.
Yes, Tornadoes are produce by thunderstorms which form from cumulonimbus clouds.
Wall clouds can form from cumulonimbus clouds that often form tornadoes.
Tornadoes form from thunder clouds that are recently pasing the town.
Yes. In fact nearly all tornadoes form from cumulonimbus clouds.
Tornadoes are a product of severe thunderstorms, which take the form of cumulonimbus clouds.
Yes.