Typhoon definition

August 24th, 2013

typhoon definition

Typhoon definition - a typhoon is a violent storm that occurs in the northwest parts of pacific basin or ocean. This name is derived from a Chinese word tai-fung meaning great wind. They feature strong winds with magnitudes of reaching 74 miles per hour and accompanied by heavy rains. Within this region they are experienced throughout the year. Majority occur often during late summer whilst tropical cyclones reduce its intensity in the months of December to May. Similar phenomena in other parts of the world are referred to as hurricanes or tropical cyclones. Typhoons move from the west heading northeast directions.

Typhoon formation and development requires existence of: sufficient Coriolis force that aids in creation of a low pressure center, enough warm sea surface temperatures, unstable atmosphere, and high humidity levels in the lower parts of the troposphere, existing low level disturbances and low vertical wind gradient. But the above ingredients do not guarantee the formation of the typhoon. The ocean temperatures must be about 26.5˚c and above spanning at depths greater than 50 meters for maintenance of the warm core which drive the cyclone. The formation area should also lye between 5 to 20 degrees latitude form the equator. Westerly winds are known to have the greatest impact in the development of the tropical cyclones.

Inside a hurricane, strong winds blow counterclockwise within the area of low pressure referred to as the eye. The eye measures 16 to 64 kilometers in diameter and has a ring of clouds surrounding it. The pacific basin is the most active having the highest frequency and intensity of the storms. During august to October is when they are at the peak. During the months of June and November they shift to the northern part of the Indian Ocean.

The unique thing about them is that they follow defined paths: a parabolic direction affecting eastern china, Korea, Japan, Taiwan and eastern Philippines. The Straight runner path on the west affecting Philippines, southern china, Vietnam and Taiwan. Lastly, northward track which its effects are felt only on the small islands around the way.

These storms are known to be devastating in nature and cause massive destruction. When a typhoon is experienced, the following damages and losses are incurred:

A lot of property is destroyed. The heavy rains lead to landslides, floods and large quantities of running water that sweeps away weak structures and uproots roads. Also the abrasive force of the wind destroys property.

Loss of lives. Any time the storms appear, they take away many lives of unsuspecting dwellers in the coastal areas. Lives are lost in events of collapsing of building, cars being swept away, flooding that leads to people drowning.

Loss of plants and animals. Vegetation and animals on land are also affected. Plants are uprooted while animals die from drowning.

Contamination of water. These storms destroy pipe works and sewerage systems leading to mixing of clean and dirty water. Spills of petroleum products also get their way into the ocean waters endangering sea life.

Financial burden to countries. When hurricanes hit an area, huge financial losses are incurred and restructuring requires heavy funding and is very costly.

Displacement of people. Areas that are prone to this natural calamities are pronounced unsafe for people. This leads to evictions and displacement of people from their lands to safer regions.

Despite their negative effect, they are of benefit in this circumstances. They drive rains to dry parts of the land, aid in navigation of ships which take advantage of the weaker regions and in direction heats pole wards.

Difference hurricane and typhoon

August 24th, 2013

typhoon vs hurrican

Difference hurricane and typhoon

During different prognoses on the weather channels we may hear about hurricanes and typhoons forming above the oceans in different parts of the world. What people commonly do not understand is the actual difference between a hurricane and typhoon. Actually, both the term “hurricane” and “typhoon” define the same thing if speaking from a purely meteorological point of view. Nevertheless, each term is used in a different situation. To eliminate any type of confusion – here is a comparison between the two from both a meteorological and geographical perspective.
From a meteorological perspective, there is absolutely no difference between hurricanes and typhoons. If we look at the structure of the storm itself, there is no real difference among hurricanes, typhoons, tropical cyclones, or even severe cyclonic storms. They are all low-pressure systems of tropical origin, which contain organized thunderstorm activity, producing winds of speeds no lower than 74 miles per hour.

So a hurricane and a typhoon have the same structure, but what about the names? Well, from a geographical point of view there actually is a difference between them. Typhoons and hurricanes are known by different names in various regions of the planet.
The term “hurricane” is used for weather phenomena, which form in either parts of the Atlantic Ocean, or the Eastern Pacific Ocean, but in other parts of the world, and according to the basin where the phenomenon is formed. If the formation happens in, for example, the Western Pacific Ocean, then the term “typhoon” is used.
The names of the other weather phenomena, which have the same structure, also vary only according to the location. Severe cyclonic storms develop in the North Indian Ocean, while tropical cyclones develop in the South and Southwest Indian Ocean. Severe tropical cyclones develop in the Southwest Pacific Ocean and the Southeast Indian Ocean.
There is also, however, the matter of the used adjectives. For example, “Super” Typhoon Megi. Well, the adjectives themselves vary according to the wind-speeds of the storm. Hurricanes and typhoons are measured using different scales. So, if a typhoon surpasses the threshold of 150 miles per hour, it is deemed a “super” typhoon.
However, the term “super” is not used for hurricanes. Hurricanes are categorized by the Saffir-Simpson Hurricane Wind Scale. So if a hurricane’s sustained winds reach at least 111 miles per hour, it is deemed to be a “major” hurricane.
So there it is – hurricanes and typhoons are technically the same thing, but they simply form in different regions of the world and are measured in different ways.

WHAT ARE THE DIFFERENT TYPES OF TYPHOON

August 24th, 2013

type of typhoon

Typhoon or an equatorial cyclone is a structure of high winds and low pressure which transpires very frequently in the Pacific or Indian oceans. When ocean’s water temperature intensifies above 26.5 Celsius a periodic cyclone is triggered. The temperature rise also increases the low-pressure belt as well and that results in water vapors and humid air. These water vapors initiate the production of high heat. Heat absorbs the strong winds, shaping up a conoidal storm. These storms occur with heavy rains and huge waives. This coned shape system with high winds and water is known as typhoon. There are five different categories of typhoon. Depending upon their scale, timings and characteristics one can identify their mature. 5 type of typhoon:

 

1) Destructive Typhoon (category 5)

A destructive typhoon is represented by winds exceeding 155miles/h of speed. “Sepat” was announces as category 5, destructive typhoon, by Joint Typhoon Warning Centre. “Sepat” was the 8th equatorial (tropical) storm in 2007. It affected Philippines, Mainland China, Fujian and Taiwan to a great extent. It caused 43 deaths with over $600 million worth of damage.

 

2) Hurricane or an acute Typhoon (category 4)

This hurricane is accompanied by winds with a speed of 130 miles/h or moreand is reported to be one of the most dangerous storms of nature. It has the highest element of risks and that makes it a category 4 typhoon. The highest peak of this typhoon was recorded in 1979 with a width of 2,220 km. It highly impacted Japan and guan. With 99 people dead it is one of the fiercest typhoons of history. “Elsie” with 250km/h hit Hong Kong with violent thunderstorm in 1975, between 9 and 15th October.

3) Stong Typhoon (category 3)

With an organization if low pressure and winds between 105 to 120miles/h, a category 3 typhoon is triggered. South Korea was hit by “Maemi” in 2003, taking 117 lives and destruction worth of million. In October 2007 “Krosa” destructed Taiwan and china with 120miles/h of winds.

 

4) Tropical Strom (category 2)

With winds of 93miles/h to 67miles per hour a tropical storm is an organized destructive system of powerful thunderstorm that with violent progression. In 2001 Texas, USA was hit by category typhoon taking 41 lives with causing damage up to $5 billion. In 2009 another tropical typhoon “Molave” hit Hong Kong causing 5 deaths.

 

5) Equatorial Depression (category 1)

It sustains winds of 73miles/h, which can go up to 92 miles/h. It forms up a hurricane really fast in its first few level. “Morakot” affected Chine, Taiwan, South Korea and the Philippines n 2009. It is the last and the fifth type of typhoon ever recorded.

 

So here are five major type of typhoon that you can find in the history that has struck human kind all over the world.