how does a cyclone form?

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Answer by specky Magee
Submitted on 6/22/2006
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Tropical Cyclone Hazards 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'sNational 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 cyclone's 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.

Answer by Katy
Submitted on 3/27/2007
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A Cyclone��s Life The average cyclone��s life span is around nine days, but it can also range from either over 20 days or only two or three. The cyclone, a water-based storm, can only form in certain weather conditions. It develops mostly in the north-west Pacific, north and south-west Indian Ocean, south-west Pacific, north and west Australia, north-west Atlantic, and north-east Pacific, the north-west Pacific being the most active. Cyclones of eastern North America usually come from the Gulf of Mexico (early season), Eastern Atlantic (mid-season), and last the Caribbean (late season). First, there has to be a warm ocean surface (above 26 Celsius), high humidity, and an area of low pressure that collides with a strong swirling cloud. This cloud moves west, and it spins towards the equator (counter-clockwise in the north, clockwise in the south). Then the cyclone starts moving towards the nearest pole, and will build up in force. An eye forms, and this is the cyclone at its nastiest. But for this to happen the weather has to stay good. If the ocean surface temperature suddenly cools down or the cyclone moves onto land, it will weaken and die. It will die faster on land, because it��s missing the warm ocean surface, and because there is much more friction, but, it can revive if it gets back to the ocean fast enough. Yeah, I know. It's a lot of info, isn't it?

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Question by mart
Submitted on 8/14/2003
Related FAQ: FAQ: HURRICANES, TYPHOONS AND TROPICAL CYCLONES (Part 1 of 2)
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how does a cyclone form?

Answer by robine
Submitted on 3/11/2004
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i don't know

Answer by ryhno
Submitted on 9/17/2004
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i don't know

Answer by **andy
Submitted on 10/17/2004
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Like a Hurricane :)

Answer by LIN
Submitted on 11/24/2004
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Air moves because of the differences in atmospheric pressure. Air moves from high pressure to low pressure. The bigger the difference between the high and low, the stronger the winds

Answer by mouse
Submitted on 2/23/2005
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well that was stupid

Answer by me
Submitted on 2/27/2005
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It has something to do with areas of low pressure forming a swirling tunnel that then gets pushed over by the wind. I'm not too sure, but I plan to find out!

Answer by damo w
Submitted on 3/2/2005
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because of warm air rising and they usually form near the equator where its warm and also forms over the ocean.

Answer by shrume swan
Submitted on 3/15/2005
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i what to know how the cyclone come to the world ?

Answer by number 1jess
Submitted on 3/17/2005
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how does a tropical cyclone form

Answer by JJ
Submitted on 4/25/2005
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It depends on your point of view. Go to www.ngcforums.tk to find out more!

Answer by banana
Submitted on 6/16/2005
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hola huga waga HU!!! RAGA MA LOMI KU!!! :)

Answer by joey
Submitted on 7/24/2005
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ya mum

Answer by Preast
Submitted on 7/25/2005
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How does a cyclone form

Answer by Jenn
Submitted on 9/26/2005
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I don't know.

Answer by killsmuslims
Submitted on 12/19/2005
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muslims should eat some pork it tastes good=)

Answer by yer get ova mah name asshole
Submitted on 5/2/2006
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Fuk this site is fuken gay!!!!! get a hobby then sitting on ya fuken gay computer all day aye.. u frigen look lyk nerds ew! no1 wanna hang around nerds.. they ugly, smelly, too smart, obsessed with school and wont eva get a gf/bf!! haha i DONT feel sorry for u bahahahhaha GO TO HELL

Answer by random
Submitted on 8/30/2006
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Angelo bow she wag me Pareto fa BO shebang ti Chang Chang this is a stupid website how much do u get paid 5cents a message lo

Answer by Joe Mamma
Submitted on 4/26/2007
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For a cyclone to form there must be warm waters (at least 26.5�C), an unstable atmosphere (one that cools quickly with height), deep water (at least 50m) and it must also form at least 500km from the equator (there is not enough spin to form a low pressure system any closer). Also needed is a weak spin to start the cyclone and a moist atmosphere (a dry atmosphere will prevent a storm occurring). Without warm waters and depth there is not enough evaporation (fuel) for a decent sized storm, without an unstable atmosphere a necessary storm cannot be formed

Answer by col
Submitted on 10/10/2005
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beacuse

Answer by chris
Submitted on 2/16/2006
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billabong

Answer by Robine sucks
Submitted on 3/2/2006
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robin does not no how to answer anything dumb ass

Answer by MihiI
Submitted on 3/19/2006
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I know but im not telling you!

Answer by ggggghf
Submitted on 3/25/2006
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no idea

Answer by casey
Submitted on 4/3/2006
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i think there formed by the wind pressure

Answer by Kelly
Submitted on 4/6/2006
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a Cyclone is formed in the late hot summer days (most likely in the Atlantic Ocean or the Indiana Ocean witch the the hot air drifts up into the sky witch forms big thunder storm clouds and then the thunder storm is created witch then may follow behind it a hurricane hope thats what you wanted!

Answer by g-a-n-g-s-t-a
Submitted on 4/27/2006
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Tropical cyclones such as Cyclone Larry are born over the warm tropical waters, which have temperatures of 27�C, in the warmest month. After several days of hot calm weather a patch of ocean and the air above it become warm. The colder denser air over the surrounding ocean forces this warmer less dense air to rise. A small low pressure cell forms in the area of rising air and is called a tropical depression.

Answer by sticks
Submitted on 5/15/2006
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warm air and cold air

Answer by 3bby
Submitted on 5/23/2006
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Um... it is formed from the sea

Answer by hunter
Submitted on 6/8/2006
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cyclones form from air moisture and pressure forming the winds to go round n round and it gets stronger in the sea. by the way i guessed

Answer by seandrouillard
Submitted on 6/8/2006
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?

Answer by hardcore
Submitted on 6/11/2006
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they need a water temperature of 26.5 degrees Celsius or above and a high and a low wind pressure meeting

Answer by Jaz
Submitted on 9/20/2006
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Go to google and look it up, duh!

Answer by My Soc Head
Submitted on 10/25/2006
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I like to eat bannanas

Answer by ghost boy
Submitted on 11/15/2006
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To mart A cyclone is made by the hot air and cold air chasing each other up and down until a cyclone comes and they start usually by a storm so beat that robine.

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