how are hurricanes formed?

Answer 1

hurricanes are formed over warm water near equator (preferably) the warm air above the water rises and cools to form clouds. More warm air comes in from all sides to replace the air that was rising. This inward wind rotates because of the Coriolis Effect and is why hurricanes look like pin-wheels from above. Hurricanes use energy from the warm ocean water to grow stronger. As long as it has warm water a hurricane will continue to grow. This is why hurricanes don't last very long once they move over land.
Hurricanes form in the tropics where the water and air are warm and moist. There are many factors which need to be just right in order for a hurricane to form. Scientists aren't sure why all these factors are needed but know that they are important. A study found that out of 608 possible storms only 50 developed into tropical storms.

One ingredient is a low pressure area which forms over a large area of warm water. The air being drawn into the central low pressure is curved due to the Coriolis Effect. Surface friction also causes the wind around the low to spiral toward the center. This gives the hurricane a circular rotation. The incoming air must go somewhere so it rises. This rising air, which is saturated with water, cools and condenses to form clouds. The latent heat given off when the water condenses causes the upper air to warm and increase in pressure. This high pressure area is the reason why weather is nice in the eye of a hurricane. This is the start of a feedback mechanism which continues to intensify the hurricane as long as there is warm water from which to draw energy. Once a hurricane moves over land, the large energy supply from the ocean is no longer available and the feedback no longer intensifies the storm. As it continues over land it begins to lose strength and eventually dissipates.
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Answer 2

Hurricanes can only be formed in he ocean and not on land. Hurricanes form when the water gets warm because that makes the energy in which hurricanes need to form. The strongest possible is a Category 5. The weakest tropical storm is the tropical depression. The wall of the hurricane (outer edge) is the strongest and the eye has no hurricane effect. Hurricanes aren't just dangerous because of the wind and rain, it's also dangerous because it can cause tornadoes as well which winds can get up to 300 MPH. Hurricanes also have a lot of moisture.

Answer 3

Hurricanes form over tropical waters (between 8 and 20 degrees latitude) in areas of high humidity, light winds, and warm sea surface temperatures [typically 26.5 degrees Celsius (80 Fahrenheit) or greater]. These conditions usually prevail in the summer and early fall months of the tropical North Atlantic and North Pacific Oceans, and for this reason, hurricane “season” in the northern hemisphere runs from June through November.
The first sign of hurricane genesis (development) is the appearance of a cluster of thunderstorms over the tropical oceans, called a tropical disturbance. Tropical disturbances generally form in one of three ways, all of which involve the convergence of surface winds. When winds come together (converge), the force of the collision forces air to rise, initiating thunderstorms
One trigger for convergence is the meeting of the Northern and Southern Hemisphere easterly trade winds near the equator. The meeting of these wind belts triggers numerous, daily thunderstorms in a region called the Intertropical Convergence Zone (ITCZ). Occasionally, a cluster of thunderstorms will break away from the ITCZ and organize into a more unified storm system.

Answer 4

Hurricanes are formed at the lower levels of the atmosphere as areas of Low Pressure and Convection come together fueled by warm ocean waters generally over 80 degrees. Basically warm waters and low upper atmospheric winds ( which is what kills hurricanes and land.) Is what creates an extremely powerful hurricane.

Answer 5

Hurricanes can often live for a long period of time -- as much as two to three weeks. They may initiate as a cluster of thunderstorms over the tropical ocean waters. Once a disturbance has become a tropical depression, the amount of time it takes to achieve the next stage, tropical storm, can take as little as half a day to as much as a couple of days. It may not happen at all. The same may occur for the amount of time a tropical storm needs to intensify into a hurricane

Answer 6

The hurricanes form over a sea surface when there are some favourables conditions and these favourable conditions are as follows:
(a)Warm ocean surface(atleast 26.5 degree celcius)upto a depth of atleast 50 metres.(b)Steep lapse rate(decrease of temperature with height).That means the atmosphere over the place should be unstable.(c) warm,moist air upto a height of atleast 5 Kms.(d) A minimum distance of 600 Kms from the equator for the coriolis force to act and deflect the wind(e)A pre-existing disturbance near the surface with sufficient vorticity and convergence to trigger the development and (f) Absence of vertical wind shear(sudden change of wind direction with height).
The energy of the hurricane is derived from the latent heat of condensation of the ascending moist air.Hence when they cross the shore ,the moisture source is cut off and the storm weakens.

Answer 7

Hurricanes can form in the ocean not on land. The ocean has to be warm. Usually between the Equator and the Tropic of Capricorn. That's where the water is usually warmest but occasionally they can form as north as being parallel to North Carolina,USA. They usually start off as a Tropical Depression usually symboled by an L on a weather map and it has winds less than 63 km/h (39 m.p.h.) and it's turning counter-clockwise. They're usually identified by a number and it's the number that that specific storm is for the season. Then if it intensifies enough it will be a Tropical Storm and it's identified by a person's name within the letter A-W excluding Q & U and it will have winds between 63-118 km/h (39-73 m.p.h.). Then a few days later after if intensifies even further it will become a Hurricane with winds 119 km/h (74 m.p.h.) or greater. Then it just keeps on intensifiying and it's based in to Category's from 1-5 on the Saffir-Simpson Scale and here it is below.

Category 1
Category 1
Sustained winds 33–42 m/s 64–82 kt
119–153 km/h 74–95 mph
Storm surge 1.2–1.5 m 4–5 ft
Central pressure 980 mbar 28.94 inHg

Category 1 storms usually cause no real damage to building structures; however, these storms can still cause damage, primarily to unanchored mobile homes, shrubbery, and trees. Also, they produce some coastal flooding, as well as minor pier damage.[5]

Storms of this intensity include Bess, in 1974; Jerry, in 1989; Ismael, in 1995; Danny, in 1997, and Gaston in 2004.

[edit] Category 2
Category 2
Sustained winds 43–49 m/s 83–95 kt
154–177 km/h 96–110 mph
Storm surge 1.8–2.4 m 6–8 ft
Central pressure 965–979 mbar 28.50–28.91 inHg

Storms of this intensity damage some roofing material, and also produce damage to doors and windows. Considerable damage is caused to vegetation, mobile homes, poorly constructed signs, and piers. Also, small craft in unprotected anchorages may break their moorings.[5]

Hurricanes that peaked at Category 2 intensity, and made landfall while still in that category include Carol of 1954; Diana in 1990; Erin during the 1995 Atlantic hurricane season; Marty in 2003; and Juan, which struck Canada in 2003.

[edit] Category 3
Category 3
Sustained winds 50–58 m/s 96–113 kt
178–209 km/h 111–130 mph
Storm surge 2.7–3.7 m 9–12 ft
Central pressure 945–964 mbar 27.91–28.47 inHg

Tropical cyclones of this intensity and higher receive the name of major hurricanes when located in the Atlantic or Eastern Pacific basins. These storms can cause some structural damage to small residences and utility buildings, with a minor amount of curtainwall failures. Buildings that lack a solid foundation, such as mobile homes, are usually destroyed. Flooding near the coast destroys smaller structures, while larger structures are hit by floating debris. Additionally, terrain may be flooded well inland.[5]

A few examples of storms of this intensity include Alma of 1966, Alicia of 1983, Roxanne of 1995, Fran of 1996, and Isidore of 2002.

[edit] Category 4
Category 4
Sustained winds 59–69 m/s 114–135 kt
210–249 km/h 131–155 mph
Storm surge 4.0–5.5 m 13–18 ft
Central pressure 920–944 mbar 27.17–27.88 inHg

Category 4 hurricanes tend to produce more extensive curtainwall failures, with some complete roof structural failure on small residences. They also cause major erosion of beach areas. Terrain may be flooded well inland as well.[5]

Hurricanes of this intensity are extremely dangerous to populated areas. The Galveston Hurricane of 1900, the deadliest natural disaster to hit the United States, would be classified as Category 4 if it were to occur today. Other examples of storms at this intensity are Hazel (1954), Iniki (1992), Iris (2001) and Charley (2004).

[edit] Category 5
Category 5
Sustained winds ≥70 m/s ≥136 kt
≥250 km/h ≥156 mph
Storm surge ≥5.5 m ≥19 ft
Central pressure <920 mbar <27.17 inHg inHg


Category 5 is the highest category a tropical cyclone can obtain in the Saffir-Simpson scale. These storms cause complete roof failure on many residences and industrial buildings, and some complete building failures with small utility buildings blown over or away. The storm's flooding causes major damage to the lower floors of all structures near the shoreline. Massive evacuation of residential areas may be required if the hurricane threatens populated areas.[5]

Storms of this intensity can be extremely damaging. Several historical examples include the Labor Day Hurricane of 1935, the 1959 Mexico Hurricane, Hurricane Camille in 1969, Gilbert in 1988, Andrew in 1992, Wilma in 2005, Dean, and Felix in 2007.

Eventually the Hurricane will hit land and then it's winds will weaken rapidly and it's air pressure will start to increase and a few hours after it makes landfall it will be a Tropical Storm and then the next day it will be a Tropical Depression and it will eventually be downgraded to a Tropical Rainstorm which no longer has sufficient winds to be considered a Tropical Depression and it will just keep on weakening and weakening while the air pressure will increase and it will eventually just go away.

Tropical Cyclones of Hurricane strength can hit anywhere between the Northern Part of South America all the way up to New Foundland,Canada. NO MATTER WHAT ANYONE TELLS YOU THE NORTHEAST U.S. CAN BE HIT BY A MAJOR HURRICANE BECAUSE THE WATERS ARE WARM ENOUGH TO SUPPORT ONE AND MOST PEOPLE WHO SAY THAT THE WATERS AREN'T WARM ENOUGH TO SUPPORT ONE AND THINK THEY KNOW WHAT THEY ARE TALKING ABOUT ARE WRONG. SO IF YOU LIVE ON THE COAST OF THE ATLANTIC OCEAN ALWAYS BE PREPARED BECAUSE IT ONLY TAKES ONE AND ESPECIALLY THE NORTHEAST U.S. AND COASTAL CANADA THOSE HURRICANES INCREASE IN FOWARD SPEED AS THEY MOVE NORTH AND IT CAN FROM AND HIT THERE WITHIN A WEEK.

Answer 8

Hurricanes are referred to as such in Gulf of Mexico and Caribbean sea and such structures are referred to as Typhoons in west Pacefic and Cyclones in Indian Seas. Hurricanes or Typhoons or Cyclones are seen interior the Tropical West and East parts of the Pacefic and the Atlantic Oceans and interior the Tropical Indian Ocean. you are able to touch hurricane learn Centre in Florida and climate places of work world extensive.