When it comes to natural disasters, many pieces of message come to our minds. such as forest fires, typhoons(hurricanes), earthquakes, floods, and so on. Human beings do not like natural disasters, yet there are some people who have interests in them. I might beone of those who love chasing tornados. For me, tornados are like mysterious and naughty boy. People do not know precisely when they will finish playing the "ruthless games."However, still there is something we can be sure. Here I want to talk about the areas affected by tornados, factors of their formation, and waterspouts.
Most tornados which we often hear about appear in North America and near the Mexican gulf. The people there areafraid of the destructive power. they view tornados as their nightmares because wherever these monsters pass, there are full of debris, blew down trees, and incomplete houses. Actually, in the U.S Great Plain tornados usually occor in April, May, and June. Also, this place has the most advantageous surroundings to form tornados; in Mexico, tornados almost appear in late autumn. They often strike Texas, Oklahoma, and so forth. These areas are called" the track of tornados."
The unstable heat is the factor of forming a tornado, especially during the daytime. When the heated air ascends as the cold air descends, a tornado is likely to occur. We can hardly observe the change of humidity and temperature. Both of them will cause tornados if they are severe enough. Moreover, tornados can be devided into six degrees--from F0~F5, and the intensity can be seperated into weak, strong, and violent. The rotating directions are also different in the North and the South. In the North, the rotating direction is counterclockwise; onthe other hand, in the South, the one is clockwise.
Tornados occur not only on land but also on the sea. The latter ones are called" waterspouts." If two tornados or waterspouts meet each other, one of them will change to the opposite rotation direction, and then the two tornados will merge into a bigger ones. In some areas, waterspouts are similar to tornados. Strictly speaking, both of them belong to whirlwind,and formfrom bottom. This year, a waterspout also struck Taiwan, but it is a rare phenomenon because the convection near Taiwan area isnot obvious than in North America. If the tornado is strong enough, trucks or even houses would be inhaled into the twister.
Tornados come and go fast. After the rude game. the sun is as shinny as before, and then the government will distribute the troops th help the threatened counties. Although I've learned such much information about tornados, I still cannot refuse to chase after the naughty boys because they are also charming and mysterious to me. Even though tornados claim many lives, they sre still one of the masterpieces of the Mother Nature. People of some where cannot totally get free from them, but fatality can be decreased ifthey learn more information about this natural phenomenon. After all, we should discover the way tolive in harmony with these acts of God.
