Science Facts

What Is The Eye Of A Hurricane? – Eyewall Of Hurricane

Hurricane Eye

Hurricane eye is the driving part that makes it strong and weak. Scientists can determine the intensity of a hurricane by this eye. Wind pressure, temperature variation and all types of the characteristic of a hurricane depends on its eye. So it is one of the essential and analytic parts of any storm or hurricane.

Hurricane Irma has winds of 185 miles per hour. That’s a category five hurricane. It is hard to believe that hurricane hunters fly into the eye. They use radar and even drop special instrument packages through the storm.

What is the eye of a hurricane?

The main parts of a tropical cyclone or hurricane are the eye, eyewall, and rainbands. The eye of the storm is where it’s relatively calm with light winds and mostly cloud-free.

  • The eye spans typically from 20-40 miles across and usually forms when a tropical cyclone has reached hurricane status with winds exceeding 74 MPH.

It is also the area where barometric pressure is the lowest. The eye formation isn’t fully understood, but likely due to the combination of angular momentum and centrifugal force conservation. Since air moves from high to low pressure, the air moves toward the center of the storm, and the Coriolis force acts on the flow of air, causing it to spiral.

The centrifugal force works opposite of the air’s direction drawing it away from the center. The strong rotation of air around the cyclone balances inflow to the center. Simultaneously, air ascends roughly 10-20 miles from the center, forming the eyewall. This circulation creates a vacuum within the eye, causing some airflow from the eyewall’s top to sink and replace air mass loss near the center. This leaves unfavorable conditions for cloud formation. As the hurricane’s eye makes landfall, the storm appears to slow down, when in fact, it’s about halfway through its devastation.

Inside the eye of a hurricane: Wind gusts increased by the hour accompanied by heavy flooding rain. It’s the most severe weather within a hurricane, and all this wrath happens within the eyewall. It’s by far the most feared region within the storm system, known as the eyewall. It surrounds the tranquil eye with a vertical wall of clouds. The clouds sloped out and up, making the eye look a bit like a stadium. Within the wall, there are dark towering thunderstorms that dance in a circular fashion around the eye. At the surface, the winds rushed toward the center of the hurricane forcing the air upwards.

In the eyewall, the air is lifted faster and more force than in any other part of the hurricane. This energy easily transports the moisture from the ocean upwards, forming heavy bands of rain. These bands can measure up to nine miles high. They rotate around the low-pressure found in the eye or sometimes even remain stationary.

  • Winds blow about 10% higher within these towers than the rest of the eyewall.

Some gusts are reaching up to 225 miles per hour. Sometimes when a hurricane makes landfall, these towers become tornadoes. The more compact the eye is within a hurricane, the stronger the eyewall’s winds and the more destructive the hurricane.

A bunch of thunderstorms move in a big circle and move slowly. This is how the eye forms a thunderstorm that it’s all a part of a hurricane. However, in the middle, that’s where air rise and forces to fall into the center. The air will also fall on the outside of the hurricane. That’s part of why the air fall in the area, subsiding so low pressure, rising air on the outside.

That’s high pressure and falling air. There is a big area of high pressure on top of it. It’s really hot and sinks. Air is getting warmer as it comes closer to the surface. And that’s why high temperatures occur.

What is the eyewall of a hurricane?

The strong part of the hurricane is the eyewall. The air around their hurricane spirals in and converges at the center that air coming in has to go somewhere. It can’t go down into the ocean. So it goes up and ends up in the spiral going up into the upper levels of the atmosphere. The eyewall is where the most intense thunderstorms with the strongest winds are. The eyewall doesn’t occur in all hurricanes because sometimes this vertical kind of structure. The upper-level winds are not entirely favorable.

So there will occur a part of an eyewall or no eyewall at all. Those are in weaker hurricanes in well-developed storms with just the atmospheric conditions. That converging air comes flying up into the upper atmosphere and then spreads out aloft. It pulls in more air at the surface, and that makes the hurricane stronger. That’s the hurricane ology of the eyewall. What is the most dangerous part of a hurricane? The hurricane’s right side is the most dangerous part of the hurricane wind speed’s additive effect.

If you’re on the track of a hurricane, it is important to follow officials’ safety precautions.


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Sources:

“Glossary of NHC Terms.” United States National Hurricane Center.
“Tropical cyclone facts: What is a tropical cyclone?”. United Kingdom Met Office.

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