and why do they form only during certain months over the ocean?
Answers (9)
thax...
All hurricanesform from a cluster of thunderstorms called a tropical wave. In the Atlantic, most tropical waves originate off the coast of Africa or in the Gulf of Mexico. In the Pacific, these waves originate off the coast of Central America and Mexico. However, these waves can develop in all the oceans of the tropics. When these waves being to organize themselves into a swirl, they become tropical depressions. These depressions carry top sustained winds, wind lasting more than one minute, of 35 miles per hour.
Hurricanes also known asa tropical cyclone they occur at
The east of continent at early autorm,because the temperature
At the sea at this time it gets to 25•C above ,making the ocean to
Enough moisture,and this occur at the present of coriolis force
And harricane will be formed and blown by the westelies wind
To the interior
A severe tropical cyclone in the North Atlantic Ocean, Caribbean Sea, Gulf of Mexico, or in the eastern North Pacific off the west coast of Mexico, with winds of 74 miles per hour (119 kph) or greater accompanied by rain, lightning, and thunder that sometimes moves into temperate latitudes.
Tropical cyclones are like giant engines that use warm, moist air as fuel. That is why they form only over warm ocean waters near the equator. The warm, moist air over the ocean rises upward from near the surface. Because this air moves up and away from the surface, there is less air left near the surface. Another way to say the same thing is that the warm air rises, causing an area of lower air pressure below.
Cumulonimbus cloud
A cumulonimbus cloud. A tropical cyclone has so many of these, they form huge, circular bands.
Air from surrounding areas with higher air pressure pushes in to the low pressure area. Then that "new" air becomes warm and moist and rises, too. As the warm air continues to rise, the surrounding air swirls in to take its place. As the warmed, moist air rises and cools off, the water in the air forms clouds. The whole system of clouds and wind spins and grows, fed by the ocean's heat and water evaporating from the surface.
Storms that form north of the equator spin counterclockwise. Storms south of the equator spin clockwise. This difference is because of Earth's rotation on its axis.
As the storm system rotates faster and faster, an eye forms in the center. It is very calm and clear in the eye, with very low air pressure. Higher pressure air from above flows down into the eye.
Hurricanes only form over really warm ocean water of 80°F or warmer. The atmosphere (the air) must cool off very quickly the higher you go. Also, the wind must be blowing in the same direction and at the same speed to force air upward from the ocean surface. Winds flow outward above the storm allowing the air below to rise. Hurricanes typically form between 5 to 15 degrees latitude north and south of the equator. The Coriolis Force is needed to create the spin in the hurricane and it becomes too weak near the equator, so hurricanes can never form there.
Very carefully