A hurricane happens when there are high speeds and wind that form over bodies of water in areas that are tropical.
The eye of the hurricane, which is the middle of the hurricane, has winds of at least 74 miles per hour.
This storm is formed by low pressure.
As a hurricane gets closer to land, it can become weaker.
This can happen often, and they become much smaller by the time they reach the shore.
Meteorologists will then downgrade the hurricane to a tropical storm or tropical depression.
Most people call a hurricane, a hurricane, but in other areas, they have different names.
In Asia Northwest Pacific (near Japan) they are called typhoons.
When a hurricane forms from the Indian Ocean, they are called cyclones. A hurricane has a scientific name and the name is tropical cyclone.
Hurricanes are also given other names that are formal names. Most of the hurricanes that form from the Atlantic Ocean are given names by the World Meteorological Organization.
These names go in an order that is alphabetical and this repeats itself each year.
So the first name of the year always starts with the letter “A” and there are six different lists, and each year there is a new list.
They will have women’s names and men’s names
Hurricanes form in tropical areas or the tropics, the weather is much warmer they have warm water.
When warm air flows over water, it becomes wet, and it becomes cooler because of the cooler air.
When this cool air hits with the warm air, it begins to rise, and this causes there to be large clouds.
The large storm clouds start to rotate.
As the Earth is spinning and the rotation of the cloud begins, a storm system is formed.
If this happens over large water areas, it will repeat and then it will cause there to be more clouds and will increase the speed of the wind.
This causes the hurricane to form.
In the southern hemisphere, the wind flow of hurricanes is clockwise
in the northern hemisphere, the wind flow of hurricanes is counterclockwise.
A tropical cyclone or a hurricane happens over oceans.
Most of these storms happen close to the equator because this is where the land is the warmest.
With there being large oceans and warm air, these storm systems can form.
Most hurricanes that form from the Atlantic Ocean happen between June 1st and November 30th each year. This timeframe is considered to be Hurricane season.
Hurricanes, like any other type of storm, can be dangerous.
When they hit the land, they can cause a lot of damage.
Most of the damage is from flooding.
Hurricanes also create tornadoes high waves called storm surges.
A storm surge is when the ocean waves are big and go over the coastline and it causes flooding along the coast.
This happens because of the strong winds.
The high winds can cause much damage to homes, businesses and it can cause trees to blow down and roofs to fly off.
This is where most of the home damage comes in. Sometimes because of the change in the wind, tornados are formed after a hurricane form.
A hurricane has different parts; the eye, the eyewall, rain bands, diameter, and height.
The eye of the hurricane is the center of the hurricane.
In the center of the hurricane, the air pressure is low.
The eye does not have clouds, the wind is very calm.
Even though these are all facts, the center of the hurricane has the eyewall which is the most dangerous part of the hurricane.
Around the eye is the Eyewall
This area of the hurricane is the most dangerous because it is where the high winds are found.
Some of the winds can go up to 155mph.
The rain band is the large band that spirals. This is the area of the hurricane that causes heavy rain.
These bands bring heavy rains that can cause flooding when the storm reaches land.
Since hurricanes can be very large storms, the diameter of the storm is important to measure. Some hurricanes go over 600 miles of land.
The height of a hurricane is measured by the clouds. When there is a very large hurricane, it can go up to 9 miles high into the Earth’s atmosphere.
A hurricane has different levels that are called categories. This is categorized by how hard the wind is blowing and how fast.
If the wind is blowing 38 miles or less, it is only called a tropical depression. If the wind is blowing 39-73 miles per hour, this is called a tropical storm.
Category 1 is when the winds are 74-95 miles per hour.
Category 2 is when the winds are 96-110 miles per hour.
Category 3 is when the winds are 111-129 miles per hour.
Category 4 is when the winds are 120-156 miles per hour
Category 5 is when the winds are 157 miles per hour or more.
Largest hurricane on record
In 1969 category 5 Hurricane Camille struck the Mississippi coast, bringing an estimated 190mph winds. This was the highest wind speed on record.
Deadliest hurricane on record
In 1900 The Great Galveston Hurricane hit the US and is classed as the deadliest natural disaster in US history. Between 6,000 and 12,000, people lost their lives. It was responsible for destroying over 3600 building.