A rise of 25 to 30 cm in sea level on the American coasts by 2050

Residents clean a flooded home on August 31, 2021 in Ponchatoula, Louisiana.

Some cities on the American coast will soon have their feet in the water almost permanently.

Getty Images via AFP - SEAN RAYFORD

Text by: RFI Follow

1 min

This is the latest very official estimate from the United States published in a report by six federal agencies including NASA.

According to US agencies, this is the fastest rise ever recorded.

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With our correspondent in Miami, 

Thirty centimeters more in thirty years is as much as the increase in sea level observed over the last hundred years.

According to this report led by the US National Oceanic and Atmospheric Agency (NOAA), 140,000 homes now live with the risk of more violent storms and especially chronic flooding. 

Some cities on the American coast will soon have their feet in water almost permanently with floods that could occur every month.

And on average, major floods will be five times more frequent.

"A red alert"

These estimates are based on the quantities of CO2 already emitted.

Clearly, they are considered irremediable.

But if global warming continues, NOAA estimates that sea level rise could reach 60cm by 2100. 

" 

's climate adviser

who has promised to halve

when the United States is today the second largest emitter on the planet. after China.

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• United States

• Environment