Why are there so many hurricanes?

A A A


Another week, another hurricane. Is this year unprecedented?

Another week, another hurricane. Is this year unprecedented?

Just about. The only time on record that anything like this happened before was in 1947, when two hurricanes and one tropical storm hit Florida within five weeks. In the 38 years since 1966 only one hurricane - Andrew in 1992 - hit the state before last month.

Anything else?

Yes, since you ask. August saw a record number of tropical storms so big that they were given names. Eight of them. And the US suffered 173 tornadoes last month, easily outstripping the previous record of 128.

Is this the end of it?

Unlikely. Friday marked the half-way point in the hurricane season. Prof William Gray of Colorado State University, one of the world's top hurricane forecasters, predicts at least one more this month. But he foresees a quiet October, partly because another disturbance - El Niño - is gathering pace in the Pacific, and this tends to suppress hurricanes in the Atlantic.

Haven't there been rather a lot of hurricanes over the last few years?

Yes, indeed. The years since 1995 have been the worst on record. And experts predict it will go on for decades more.

What's going on?

A combination of factors must combine to make a hurricane. These include thunderstorms, distance from the Equator, and particular wind conditions. But one of the most vital is warm seawater: the Atlantic is very warm this year.

So it's all down to global warming?

Hard to say. There are natural cycles in the temperature of the oceans. But most scientists agree that hurricanes will get stronger as the world warms up. Whether they will be more frequent is a much more open question.

Life and Style
A monstrous idea? Body transplants might no longer be science fiction
Science An Italian neurosurgeon believes so - and it's not quite as implausible as it sounds, says Steve Connor
Sport
Demba Ba (right) celebrates after Besiktas win on penalties
footballThere was no happy return to the Ataturk Stadium, where the Reds famously won Champions League
Arts and Entertainment
Natural beauty: Aidan Turner stars in the new series of Poldark
arts + ents
News
Mia Freedman, editorial director of the Mamamia website, reads out a tweet she was sent.
arts + ents
Have you tried new the Independent Digital Edition apps?
News
people
Arts and Entertainment
The write stuff: masters of story-telling James Joyce, left, and Thomas Hardy
arts + ents...begging to differ, John Walsh can't even begin to number the ways
Sport
Jose Mourinho on Sky Sports
footballEXCLUSIVE COLUMN Paul Scholes: It was not a leg-breaking tackle, as the Chelsea manager had claimed
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
iJobs Job Widget
iJobs General

Recruitment Genius: Bookkeeper

£23000 - £26000 per annum: Recruitment Genius: This small, friendly, proactive...

Recruitment Genius: Photographic Event Crew

£14500 - £22800 per annum: Recruitment Genius: This is a fantastic opportunity...

Recruitment Genius: Software Developers - .NET / ASP.NET / WebAPI / JavaScript

Negotiable: Recruitment Genius: A Software Developer is required to join a lea...

Austen Lloyd: Corporate Tax Solicitor - City

Excellent Salary: Austen Lloyd: A first rate opportunity to join a top ranking...

Day In a Page

HIV pill: Scientists hail discovery of 'game-changer' that cuts the risk of infection among gay men by 86%

Scientists hail daily pill that protects against HIV infection

Breakthrough in battle against global scourge – but will the NHS pay for it?
How we must adjust our lifestyles to nature: Welcome to the 'Anthropocene', the human epoch

Time to play God

Welcome to the 'Anthropocene', the human epoch where we may need to redefine nature itself
MacGyver returns, but with a difference: Handyman hero of classic 1980s TV series to be recast as a woman

MacGyver returns, but with a difference

Handyman hero of classic 1980s TV series to be recast as a woman
Tunnel renaissance: Why cities are hiding roads down in the ground

Tunnel renaissance

Why cities are hiding roads underground
'Backstreet Boys - Show 'Em What You're Made Of': An affectionate look at five middle-aged men

Boys to men

The Backstreet Boys might be middle-aged, married and have dodgy knees, but a heartfelt documentary reveals they’re not going gently into pop’s good night
Crufts 2015: Should foreign dogs be allowed to compete?

Crufts 2015

Should foreign dogs be allowed to compete?
10 best projectors

How to make your home cinema more cinematic: 10 best projectors

Want to recreate the big-screen experience in your sitting room? IndyBest sizes up gadgets to form your film-watching
Manchester City 1 Barcelona 2 player ratings: Luis Suarez? Lionel Messi? Joe Hart? Who was the star man?

Manchester City vs Barcelona player ratings

Luis Suarez? Lionel Messi? Joe Hart? Who was the star man at the Etihad?
Arsenal vs Monaco: Monaco - the making of Gunners' manager Arsene Wenger

Monaco: the making of Wenger

Jack Pitt-Brooke speaks to former players and learns the Frenchman’s man-management has always been one of his best skills
Cricket World Cup 2015: Chris Gayle - the West Indies' enigma lives up to his reputation

Chris Gayle: The West Indies' enigma

Some said the game's eternal rebel was washed up. As ever, he proved he writes the scripts by producing a blistering World Cup innings
In Ukraine a dark world of hybrid warfare and murky loyalties prevails

In Ukraine a dark world of hybrid warfare

This war in the shadows has been going on since the fall of Mr Yanukovych
'Birdman' and 'Bullets Over Broadway': Homage or plagiarism?

Homage or plagiarism?

'Birdman' shares much DNA with Woody Allen's 'Bullets Over Broadway'
Broadchurch ends as damp squib not even David Tennant can revive

A damp squib not even David Tennant can revive

Broadchurch, Series 2 finale, review
A Koi carp breeding pond, wall-mounted iPads and a bathroom with a 'wellness' shower: inside the mansion of Germany's 'Bishop of Bling'

Inside the mansion of Germany's 'Bishop of Bling'

A Koi carp breeding pond, wall-mounted iPads and a bathroom with a 'wellness' shower