Massive quake expected to trigger tsunami

Bulgaria Strong Earthquake in the North Pacific

A tsunami advisory is in effect for Alaska's Aleutian Islands after a 7.8 magnitude natural disaster struck off Russia's Kamchatka Peninsula Monday evening.

The powerful natural disaster hit off the coast of northeastern Russian Federation, some 200 km from the city of Nikol'skoye on Bering island.

The quake was originally reported as a 7.4 magnitude, but it was subsequently upgraded to 7.8.

It was also very shallow, only 10km below the seabed, which would have amplified its effect, but it was far from any mainland.

He said the population of Nikolskoye had been warned of tsunami.

The quake occurred at 7:34 p.m. EDT approximately 124 miles east-southeast of Nikol'skoye, Russia, off the coast of Russia's Kamchatka Peninsula, at a depth of 7.3 miles.

All areas within 186 miles (300 km) may see hazardous tsunami waves, the PTWC said.

Civil Defence said it was assessing the risk to New Zealand but swiftly confirmed there was no risk.

Note that with a magnitude 9.0 natural disaster, the probability of an aftershock with a magnitude exceeding 7.5 is not negligible.

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