Hurricanes are some of the most powerful and dangerous storms on Earth. They can cause a lot of damage when they hit land, but before they do, they form under specified conditions over warm ocean waters.
Hurricanes need warm water, typically 80°F (27°C) or higher, to form. These storms usually begin near the equator where the sun heats the ocean. The warmer the water, the more energy is available to fuel the storm. When the water heats up, so does the air.
How warm air rises
Warm air is lighter than cooler air. Hence, when the air over the warm ocean water heats up, it rises into the sky. This creates an area of low pressure at the surface of the water. Low pressure means the air is lighter and there’s less of it pushing down.
As the warm air rises, it cools down. When it does so, it can’t hold as much moisture, and the water vapor in the air turns into droplets. This is what forms clouds. As more warm air rises and cools, more clouds form, building up the storm.
The winds start to spin
Now, we have warm air rising and creating clouds, but we don’t have a hurricane just yet. The next step is wind. When the warm air rises, the surrounding air with higher pressure moves in to fill the space. This movement of air creates wind.
Because the Earth is spinning, the wind doesn’t blow in a straight line. Instead, it starts to rotate or spin. This spinning effect called the Coriolis Effect is what makes the winds swirl around the center of the storm. The more air that rises and cools, the stronger the winds become, and the storm begins to take shape.
The formation of a hurricane
As the wind spins faster and faster, the storm grows bigger. At the center of this storm is an area called the “eye.” The eye of the hurricane is usually calm, with little or no wind. Surrounding the eye is a ring of strong winds and heavy rain known as the “eye wall.” This is the most dangerous part of the hurricane because the winds here are the strongest.
If the winds within the storm reach 74 miles per hour (about 120 kilometers per hour), it becomes a hurricane. Before reaching that speed, the storm is called a tropical depression or tropical storm, depending on its strength.
How hurricanes grow stronger
Hurricanes can grow stronger as long as they remain over warm ocean water. The heat from the water provides the energy the storm needs to keep going. The more heat the storm can take in, the more powerful it becomes.
Once a hurricane moves over cooler water or land, it begins to weaken. This is because it loses its source of energy. However, even a weakened hurricane can still bring heavy rain and cause flooding, so itis important to take these storms seriously.
The impact of hurricanes on land
When hurricanes make landfall, they can cause massive damage. The strong winds can knock down trees, power lines, and buildings. Heavy rain can cause flooding, and large waves called “storm surges” can push water far inland, flooding homes and roads.
Some areas are more prone to hurricanes than others, especially coastal regions. In the United States, places like Florida, Texas, and Louisiana are often in the path of hurricanes. People who live in these areas are usually warned ahead of time so they can prepare or evacuate.
How scientists predict hurricanes
Predicting hurricanes is an important job. Scientists use satellites to watch the oceans for signs of storm development. They look for clusters of thunderstorms over warm water and track the movement of air. When they see a storm forming, they give it a name and keep track of its path.
As the storm gains strength, meteorologists (weather scientists) can predict where it will go and how strong it will be when it reaches land. This helps people know when they need to evacuate or take other safety measures.
See all the latest news from Greece and the world at Greekreporter.com. Contact our newsroom to report an update or send your story, photos and videos. Follow GR on Google News and subscribe here to our daily email!
