How Hurricanes Form

Sunday, July 21, 2019


Hurricanes can be both beautiful and incredibly destructive
When a tropical cyclone reaches sustained winds of 74 mph, it is called a hurricane.
The official hurricane season is June 1 to November 30, but hurricanes sometimes occur outside of this season.
In the North Atlantic, and the central North Pacific, the term hurricane is used.
The same type of disturbance in the Northwest Pacific is called a typhoon.
Meanwhile, in the South Pacific and the Indian Ocean, the generic term tropical cyclone is used.

Hurricanes need the following ingredients in order to occur

A group of thunderstorms that move over the ocean

Warm moist water. In fact, the water needs to be 80 degrees or higher.
Also, this warm water needs to be about 200 feet deep

Unstable air that allows the moist air to rise  this rising air needs to be humid up to 18,000 feet
This large amount of water vapor supplies latent heat energy for the storm

Gentle winds in the upper atmosphere traveling at the same speed and direction to avoid ripping the storm apart

A high-pressure system in the upper atmosphere

Put all of these ingredients together and you may get a hurricane

Storms that form north of the equator spin counterclockwise. Storms south of the equator spin clockwise.

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