[RayChuang88]

Scientists have pretty much agreed that the entire northern coast of the island of Crete was wiped out by a major tsunami circa 1500 BC. The source? The major eruption of the Thera volcano on Santorini, which collapsed a huge portion of the island into the Aegean Sea and triggered of a huge tsunami that not only wiped out northern Crete, but possibly much the coastlines along the eastern Mediterranean.

The major fear is that if this volcano erupts in a big way and a much of the mountain slides into the sea, we could be seeing waves over 200 feet high along the African continent shore closest to the Canary Islands, the city of Lisbon would be threatened with waves over 100 feet high, and the entire US East Coast could face a tsunami about 25-28 feet high, threatening millions of lives and potentially costing over US$10 TRILLION in damages.

[winoneforthegipper]

Interesting info I did not know...

Largest quake yet about an hour ago...and at 10km

http://www.emsc-csem.org/Earthquake/earthquake.php?id=238439

[PIF]

... the city of Lisbon would be threatened with waves over 100 feet high ...

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Interestingly enough, it was a tsunami which ended the Portuguese Empire in 1755. The tsunami wiped out the royal archives where all the navigation maps and charts were stored (the then eyes only, top secret stuff).