Hurricane Ida: Thousands flee as category four storm bears down on Louisiana

Tens of thousands of people are fleeing the US state of Louisiana as Hurricane Ida closes in from the Gulf of Mexico.

Ida is now a category four hurricane, one below the highest level, with up to 150mph (240km/h) sustained winds.

It is expected to make landfall on Sunday, bringing a “life-threatening” storm surge. Ida is likely to be stronger than Hurricane Katrina, which devastated much of New Orleans in 2005.

Traffic jams clogged motorways as residents heeded orders to evacuate.

The National Hurricane Center said “potentially catastrophic wind damage and flooding rainfall will impact portions of the northern Gulf coast beginning later this morning” (Sunday).

The current 150mph maximum sustained wind speed is only 7mph short of a category five hurricane. No category five has ever hit Louisiana.

Governor John Bel Edwards warned residents on Saturday: “Your window of time is closing. By the time you go to bed tonight you need to be where you intend to ride the storm out and you need to be as prepared as you can be, because weather will start to deteriorate very quickly tomorrow.”

The governor of neighbouring Mississippi has declared a state of emergency.

President Joe Biden said Ida was “turning into a very, very dangerous storm” and the federal government was ready to provide help.

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Position of Ida at 01:00 local time (06:00 GMT) on Sunday. Source: National Hurricane Center

The NHC said that, at 12:00 GMT on Sunday, Ida was about 50 miles south-west of the mouth of the Mississippi river and was moving north-west at about 15mph. While still over water, it has the capacity to strengthen even further.

media captionTomasz Schafernaker says Hurricane Ida is due to make landfall on Sunday afternoon
Ida earlier battered part of Cuba, bringing down trees and tearing off roofs, while Jamaica suffered heavy rains. No-one was reported killed.

Sunday marks the 16th anniversary of Hurricane Katrina, which devastated New Orleans after making landfall as a category three. Katrina flooded 80% of the city and killed more than 1,800 people.

With stronger storm defences now in place, there’s hope that levees in New Orleans will be able to withstand the impact of the hurricane.

But experts warn that if storm surges hit at a time that coincides with high tides, sea water could flood the New Orleans levee system and enter the city again.

“Please understand this, there is the possibility that conditions could be unliveable along the coast for some time and areas around New Orleans and Baton Rouge could be without power for weeks,” the National Weather Service wrote on Saturday.

“We have all seen the destruction and pain caused by [Hurricanes] Harvey, Michael and Laura. Anticipate devastation on this level and if it doesn’t happen then we should all count our blessings.”

Alessandra Jerolleman, a senior fellow in emergency management at New Orleans’ Tulane University, told the BBC as she fled in her car: “I am absolutely devastated thinking about those communities under mandatory evacuation orders.

“They can expect to see catastrophic and substantial damage… streets can be expected to flood, vehicles can be expected to be lost.”

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Hurricanes get stronger on land in a warmer world
More than 80 oil rigs in the Gulf of Mexico have been evacuated and half the region’s oil and gas output has been suspended.

Hurricane categories on the Saffir-Simpson scale
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The impact of climate change on the frequency of storms is still unclear, but increased sea surface temperatures warm the air above and make more energy available to drive hurricanes, cyclones and typhoons.

As a result, they are likely to be more intense with more extreme rainfall.

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