Is there an F0?

An F0 tornado is the weakest tornado on the retired Fujita Scale. An F0 will have wind speeds less than 73 mph (116 km/h).

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Thereof, why are tornadoes black?

Usually a tornado starts off as a white or gray cloud but if it stays around for a while, the dirt and debris it sucks up eventually turns it into black one. 3 out of every 4 tornadoes in the world happen in the United States. Are there tornadoes in Russia? A tornado has hit the eastern Russian city of Blagoveshensk, killing one person and injuring 28. The twister reportedly left thousands of people without electricity after knocking out power lines. This amateur video shows the tornado as it swept across the city and hit electricity pylons.

Why tornadoes don't occur in India?

TWC India. Tornadoes are rare in India. Scientists have believed that tornadoes are born in the clouds of thunderstorms in the form of funnel-like wind systems and make their way down towards the Earth, sucking air from the surroundings, in a conical formation?lifting and whirling everything that comes in their way. Can you have a tornado without rain? Tornadoes often occur when it is not raining. Tornadoes are associated with a powerful updraft, so rain does not fall in or next to a tornado. Very large hail, however, does fall in the immediate area of the tornado.

Also, does a tornado have to touch the ground?

If it does not reach the ground, then it is called a funnel cloud. If it does reach the ground, it's a tornado. Debris and dust are kicked up where the narrow end of the funnel touches the ground. Tornadoes, also called twisters, are columns of air rotating dangerously fast. Can you breathe inside a tornado? Researchers estimate that the density of the air would be 20% lower than what's found at high altitudes. To put this in perspective, breathing in a tornado would be equivalent to breathing at an altitude of 8,000 m (26,246.72 ft). At that level, you generally need assistance to be able to breathe.