How many typhoon in a year

Table 1 Average number of tropical cyclone crossing within km of Hong Kong and average number of tropical cyclone signals for different periods. The decrease in the year averages in the last few decades is an interesting subject to look into. The inter-annual and inter-decadal variations in tropical cyclone frequency in the western North Pacific are likely related to a number of factors which affect the sea surface temperature and atmospheric circulations in the region.

Moreover, some recent research suggested that the long term sea surface temperature rise due to human-induced climate change[3] could also affect the tropical cyclone frequency, intensity and movement. Since the causes of the variations in the tropical cyclone frequency in the western North Pacific and the South China Sea are rather complex and may comprise both natural and human-induced influences, more studies are still required to further understand the relative contributions of natural variations e.

The Filipino is basically of Malay stock with a sprinkling of Chinese, American, Spanish and Arab blood, and other ethnic minorities. Overview of Disasters Located along the typhoon belt in the Pacific, the Philippines is visited by an average of 20 typhoons every year, five of which are destructive. Pinatubo June Volcanic eruption of the Mount Pinatubo in June was the largest volcanic explosion in the 20th century. It killed , affected 1,, About 40, houses were destroyed, and more than 70, houses were damaged.

It affected a total of 3,, Families or 16,, Persons. Killing 6, persons, 28, were injured and 1, were still missing.

Though the national capital, Manila, was largely spared, the storm destroyed tens of thousands of homes on the island, displaced more than , people, and killed at least 20 people. As of November 2 , the Philippine Red Cross reported Catanduanes Island had no access to electricity, water, and cellular network. The image on the right shows brightness temperature data, which is useful for distinguishing cloud structures blue from the surface below yellow.

Goni started to rapidly intensify on October 28, increasing from a tropical depression with kilometer mile per hour winds to a kilometer mile per hour super typhoon in 54 hours. Conditions for intensification were nearly ideal : Goni encountered a moist atmosphere, very warm ocean temperatures, and little wind shear.

On average, the country experiences 20 storms and typhoons per year. However, the last typhoons to approach the region at this strength were Super Typhoon Meranti in and Super Typhoon Haiyan in Goni has since weakened to a tropical storm and is expected to make landfall in central Vietnam this week.