The mega tsunami could wash away major cities like Seattle and Portand in minutes, while great swathes of US costal land would be at risk of flooding or sinking 6.5 feet under water Parts of America could be wiped out by a mega-tsunami (Image: Getty Images/Photononstop RF)

Several major US cities and states along the US Pacific Coast are at risk of being wiped out almost instantly by a colossal tsunami if a huge earthquake hits the Cascadia Subduction Zone, scientists have ominously warned. ‌

A team of researchers issued the terrifying warning about one of North America ’s most dangerous fault lines in a Virginia tech study which was published in the Proceedings of the National Academy of Sciences. ‌

The Cascasdia Subduction Zone (CSZ) runs almost 600 miles from northe

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