tornado

Tornado tornado is a pillar of violently rotating air spreading from the thunderstorm cloud to the surface of the earth. Because of their shape and role, they are sometimes called twister. Tornado's wind speed is usually less than 100 mph. You can exceed 250 miles per hour with + F4. They usually stay on track below mile and are less than 100 yards. It is wide. Several conditions are necessary for the occurrence of a tornado. The tornado not only needs rich, low level and unstable atmosphere but also thunderstorm is necessary.

The tornado consists of a violent cyclone and a funnel shaped cloud. Tornades are often associated with severe weather conditions such as thunderstorms and hurricanes. The tornado is very destructive. The average width of tornadoes is 300 to 500 yards. Those routes can be extended to 50 miles and funnel clouds will travel from 10 to 50 miles per hour. The wind speed in the funnel cloud is estimated to be 100 to 500 miles per hour. About 2% of all tornadoes are "fierce" tornadoes with wind speed over 300 mph, average route width of 425 yards and average route length of 26 miles. The tornado season peaks in the US from March to August, peaks from April to June, but tornadoes may occur throughout the year.

Tornades usually start with a funnel-like cloud with no strong wind on the surface, not all funnel-shaped clouds evolve into tornadoes. Most tornadoes produce strong winds on the ground, visible funnels are still on the ground, it is difficult to distinguish the difference between funnel clouds and tornadoes from distance. Occasionally storms will create multiple tornados simultaneously or continuously. Multiple tornadoes produced by the same stormy cell are known as "tornado". Tornadoes can occur many times from the same large storm system. If activity is not interrupted, this is considered a tornado outbreak (the term "tornado outbreak" has various definitions). In the same general area (caused by several meteorological systems), the period of tornadoes ejected continuously for several days is a tornado burst sequence, sometimes called expansion tornado generation.