[ravingnutter]

A massive chunk of La Palma, the most volcanically active island in the Canaries archipelago, is unstable, says Simon Day, of the Benfield Grieg Hazard Research Centre at University College London.

He calculates that its flank could collapse the next time the volcano, Cumbre Vieja, erupts.

If so, that would send a dome-shaped wall of water up to 100 metres high racing across the Atlantic at 800 kilometres per hour, hitting the western coast of Africa and southern coast of England within a few hours.

Some eight hours after the collapse, the US East Coast and Caribbean would bear the brunt. Cities from Miami to New York would get swamped by waves up to 50 metres high, capable of surging up to 20 kilometres inland, according to Day's research.

US also faces tsunami threat

While some researchers discount this, we have to remember that it is very difficult to make timeline predictions in matters such as this. Also, there are NO warning devices on the East coast, only the West coast.

[Born to Conserve]

"If so, that would send a dome-shaped wall of water up to 100 metres high racing across the Atlantic at 800 kilometres per hour, hitting the western coast of Africa and southern coast of England within a few hours."

We don't have to worry then, because we don't use metric in the U.S.

[laurav]

See my post re Manhattan -- even if it came 20km inland, that barely gets the tsunami over Brooklyn and Staten Island. NYC became a big town because it's a sheltered harbor.