Why hurricane Irma is so powerful and other questions about the elements - ForumDaily
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Why hurricane Irma is so powerful and other questions about the elements

Photo: NOA video

The biggest hurricane in the history of Irma threatens millions of people in the Caribbean and Florida. Here are some answers to questions about Irma and other hurricanes.

Where did the hurricane come from?

Irma is a classic Cape Verdean hurricane that formed on August 30, 2017 near the Cape Verde Islands when a strong tropical wave emerged from continental Africa. Almost simultaneously with Irma, Hurricane Jose formed in the Atlantic Ocean and Hurricane Katya formed in the Gulf of Mexico.

Why is a hurricane formed now?

The hurricane season begins on June 1 and ends on November 30. For the occurrence of a hurricane is necessary that the water in the ocean was not lower than 26 degrees Celsius. The peak of the hurricane season is in the middle of August - the middle of October. The most powerful hurricanes occur 10-11 September.

What does the average hurricane season look like?

According to the National Weather Service, 12 storms usually occur during the season. Hurricane Katya is a 11 storm for the season. Element names are assigned after the wind reaches 63 km per hour. In the normal season, 6 hurricanes occur, three of which are powerful with wind speeds of approximately 179 km per hour and higher. This year, two major hurricanes have passed - Harvey and Irma, two new ones are expected on Wednesday - Katya and Jose, and Franklin and Gert are also coming.

Can meteorologists predict a year with strong hurricanes?

Yes. In May, the meteorological service predicted 70% the probability that this year there will be from 11 to 17 storms of which 5-9 will become hurricanes. They also predicted that hurricane 2-4 would be powerful. In early August, the forecast changed - 60% probability that there will be 14-19 storms, 5-9 hurricanes and 2-5 powerful hurricanes.

Is the current storm unusual?

If Irma gets to Florida in the category 4 or 5 points, then it will be a historic moment. According to Phil Klotzbach, a professor of meteorology at the University of Colorado, if this happens, then for the first time in 1 history, two 4-5 ballroom storms will hit the United States.

In addition, a hurricane of such power was only once in the year 2013 in the Philippines. Typhoon Haiyan claimed the lives of more than 6000 people.

Was there a hurricane lull?

Before Hurricane Harvey, which hit the United States last month, not a single major storm reached America. The last major hurricane that hit Florida was in 2005, Hurricane Wilma. Scientists believe that a hurricane lull is rather an exception to the rule. The number of hurricanes was standard, just none got to the United States.

Why is Hurricane Irma so powerful?

The occurrence of hurricanes begins with the formation of small areas of low pressure above the surface of the southern seas, where warm, humid air begins to rise rapidly. Several tons of water vapor condense, and a huge amount of heat is released, which gives an additional boost to the ascending air. And soon begins the cycle of wet winds around the "eye of the storm."

The hurricane rages until it reaches the land or cold section of the sea surface and spends the entire amount of moisture. Irma was formed in very thermal water, and a powerful wind was also recorded, which provoked a hurricane at such a speed - 299 km per hour. The stronger hurricane was recorded in 1980 year - Hurricane Allen at a speed of 306 km per hour.

Read also on ForumDaily:

The most powerful hurricanes over the Atlantic since 1980 of the year

How to prepare for a hurricane: step by step instructions

What to do if a hurricane caught you in the car

Miscellanea In the U.S. Hurricane storm weather element Educational program Irma
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