TORNADO

 

                  A tornado is a rotating column of air that form the tight relationship between cumulonimbus clouds to the soil  surface. With its narrow end touches the earth and is often surrounded by a cloud of debris

                         

                 Generally, tornadoes have wind speeds of 177 km / hour or more with an average reach of  75 m and travel several kilometers before disappearing. Although tornadoes are rare Indonesian but this is often happens in countries such as the United States, Canada, Latin America, South Africa, Italy, Australia and New Zealand.

 Tornado Attack
     Sometimes, some tornadoes are formed from large-scale storm system is the same. If there is a destructive tornado activity, this is considered to be a tornado attack. Period of several days in a row by a tornado attack in the same location (formed by multiple weather systems) is a series of tornado attacks, which are sometimes called wide tornado attack. 

Tornadoes can be classified into :

-Multi-vortex tornado is a type of tornado in which two or more rotating column of air that surrounds the central clot. Multi-vortex structure can occur in almost any circulation, However very often observed in a devastating tornado.

-The satellite tornado is a term for weak tornado formed near the strong big tornado that occurred in the same mesosiklon.

- Waterspout is a tornado that crossed the waters. However, researchers generally characterize tornado "weather" is derived from a tornado .This wind can be formed across the waters like a tornado mesosiklon, or a tornado that came out of the ground waters. Since the wind is made up of destroyers and lightning storms can be far more powerful, faster, and last longer than the tornado weather, the wind is considered far more dangerous

Damage caused by a number of tornadoes categorized among other :

-Small
Some damage to chimneys, branches broken and  torn leaves, shallow rooted trees pushed pointer boards damaged and collapsed.

-Medium
  Scattered rooftops semi-permanent houses collapsed and even shifts large trees uprooted, broken glass is not strong  Zinc and asbestos .

-Severe

Flying roof and the walls were badly damaged and even permanent houses collapsed, trains overturned, most trees in forest uprooted,big car was thrown from ground level.

-Great
  Permanent home shattered building with semi-permanent foundations were swept,large missiles triggered,cars and other heavy objects thrown flying,all flying tree.

-Very powerful

A house with good foundations swept frame, large missiles flying through the air up to 100 meter, other extraordinary phenomena will appear.

 So, even though tornadoes are rare in Indonesia, but we should remain vigilant carefully and if there are any indications of this.

The video :

*Note:

- The purpose of this explanation text is giving detail explanation on how tornado happens.

- The above explanation text is mostly written in Simple Present Tense. 

- The Generic Structure is as follow:
1.General Statement; from the 1^st  paragraph it is what we call of “general statement” of the          discussion about a tornado.
2.Sequenced Explanation; 2^nd -5^rd paragraph describe how a tornado happens.