There are about 100,000 thunderstorms that occur in the United States, but only about 1% of those storms produce tornadoes. That doesn't seem like a lot, but if you think about it, that's 1,000 storms that produce tornadoes each year.
Yes and no. The funnel of a tornado does not have to reach the ground for damaging winds to occur at ground level. However, if those winds reach the ground then the tornado has touched down even if the funnel hasn't.
By definition a tornado must be in contact with both the ground and the cloud base. So, in that sense, yeas. But this only means that the violent circulation must make this connection, not necessarily the visible funnel. Additionally, sometimes a tornado starts to form, but dissipates before touching down, but in that case it is not considered a tornado.
A tornado becomes a tornado when the circulation reaches the ground.
Air near the ground spirals inward and upward in and near the tornado.
It becomes a tornado, obviously.
A tornado. a tornado
a funnel cloud touching the ground is then called a tornado
A tornado often appears dark were it is touching the ground be cause the powerful winds of the tornado lift dirt from the ground.
A funnel cloud that touches the ground is a tornado.
tornado
Yes and no. The funnel of a tornado does not have to reach the ground for damaging winds to occur at ground level. However, if those winds reach the ground then the tornado has touched down even if the funnel hasn't.
Yes, it must extend from cloud base to the ground.
A funnel cloud is typically visible before a tornado touches down
A waterspout can transition from water to land but becomes a tornado as long as it is touching land; if it is not touching the ground it would be called a "funnel cloud".
In a sense. Some tornadoes are only in intermittent contact with the ground, touching down and lifting multiple times.
When a tornado touches down it means that it has reached the ground and can now cause damage. Prior to touching down a funnel cloud is usually visible, hanging fro the base of the thunderstorm. It does not qualify as a tornado until damaging winds reach ground level.
For getting proper earthing. And it will reduce the chance for getting electric shock