2010-11
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Abele
Bingiza
Cherono
Dalilou
Elvire
Francis
Giladi
Haingo
Igor
Jani
Khabonina
Lumbo
Maina
Naledi
Onani
Paulette
Qiloane
Rafael
Stella
Tari
Unjaty
Vita
Willy
Ximene
Yasmine
Zama
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The RSMC La Réunion area of responsibility is Southwest Indian Ocean. Madagascar, Reunion, Seychelles, Comores, and Mauritius use a common list of names for identifying tropical depressions.
Mauritius is responsible for naming depressions forming in the region lying between longitude 55°E and 90°E. Madagascar is responsible for the region west of longitude 55°E.
Whenever a cyclone moves from the Australian region of responsibility to that of Mauritius, it is given a hyphenated name comprising the names from both regions for a period of about 24 hours. Thereafter it is known by the South West Indian Ocean name.
North Indian Ocean
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List I
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List II
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List III
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List IV
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Bangladesh
India
Maldives
Myanmar
Oman
Pakistan
Sri Lanka
Thailand
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Onil
Agni
Hibaru
Pyarr
Baaz
Fanoos
Mala
Mukda
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Ogni
Akash
Gonu
Yemyin
Sidr
Nargis
Rashmi
Khai-Muk
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Nisha
Bijli
Aila
Phyan
Ward
Laila
Bandu
Phet
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Giri
Jal
Keila
Thane
Murjan
Nilam
Mahasen
Phailin
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List V
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List VI
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List VII
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List VIII
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Bangladesh
India
Maldives
Myanmar
Oman
Pakistan
Sri Lanka
Thailand
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Helen
Lehar
Madi
Nanauk
Hudhud
Nilofar
Priya
Komen
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Chapala
Megh
Roanu
Kyant
Nada
Vardah
Asiri
Mora
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Ockhi
Sagar
Mekunu
Daye
Luban
Titli
Gigum
Phethai
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Fani
Vayu
Hikaa
Kyarr
Maha
Bulbul
Soba
Amphan
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RSMC New Delhi, India is responsible for the Bay of Bengal and the Arabian Sea.
These lists will be used sequentially. The first name in any given year is the one immediately following the last name from the previous year.
Each year beginning around June 1st, the Gulf and East Coast states are at great risk for tropical cyclones. While most people know that tropical cyclones can contain damaging wind, many do not realize that they also produce several other hazards, both directly and indirectly. Following is vital information you need to help minimize the impact of tropical cyclones on you and your loved ones. This is your call to action.
Storm Surge
Storm surge is simply water that is pushed toward the shore by the force of the winds swirling around the storm. This advancing surge combines with the normal tides to create the hurricane storm tide, which can increase the average water level 15 feet (4.5 m) or more.
In addition, wind driven waves are superimposed on the storm tide. This rise in water level can cause severe flooding in coastal areas, particularly when the storm tide coincides with the normal high tides. Because much of the United States' densely populated Atlantic and Gulf Coast coastlines lie less than 10 feet above mean sea level, the danger from storm tides is tremendous.
The level of surge in a particular area is also determined by the slope of the continental shelf. A shallow slope off the coast will allow a greater surge to inundate coastal communities. Communities with a steeper continental shelf will not see as much surge inundation, although large breaking waves can still present major problems. Storm tides, waves, and currents in confined harbors severely damage ships, marinas, and pleasure boats.
Wind and Squalls
Hurricanes are known for their damaging wind. They are rated in strength by their wind also. However, when the NWS's National Hurricane Center issues a statement concerning the wind and catagory, that value is for sustained wind only. This hurricane scale does not include gusts or squalls.
Gusts are short but rapid bursts in wind speed and are primarily caused by turbulence over land mixing faster air aloft to the surface. Squalls, on the other hand, are longer periods of increased wind speeds and are generally associated with the bands of thunderstorms which make-up the spiral bands around the hurricane.
A tropical cyclones wind damages and destroys structures two ways. First, many homes are damaged or destroyed when the high wind simply lifts the roof off of the dwellings. The process involved is called Bernoulli's Principle which implies the faster the air moves the lower the pressure within the air becomes. The high wind moving over the top of the roof creates lower pressure on the exposed side of the roof relative to the attic side.
The higher pressure in the attic helps lift the roof. Once lifted, the roof acts as a sail and is blown clear of the dwelling. With the roof gone, the walls are much easier to be blown down by the hurricane's wind.
The second way the wind destroys buildings can also be a result of the roof becoming airborne. The wind picks up the debris (i.e. wood, metal siding, toys, trash cans, tree branches, etc.) and sends them hurling at high speeds into other structures. Based on observations made during damage investigations conducted by the Wind Science and Engineering Research Center at Texas Tech University, researchers realized that much of the damage in windstorms is caused by flying debris.
They found, based on damage investigations, sections of wooden planks are the most typical type of debris observed due to tornado. A 15-lb 2x4 timber plank in a 250 mph (400 km/h) wind would travel at 100 mph (161 km/h). While 250 mph (400 km/h) is considerably more than even the strongest hurricane's sustained wind, the wind in squalls and tornadoes, could easily reach that speed.
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