7.8-magnitude earthquake hits off Russia’s Kamchatka: USGS | world-news | Hindustan Times
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7.8-magnitude earthquake hits off Russia’s Kamchatka: USGS

A tsunami advisory was prompted for parts of the Pacific, including Alaska’s remote Aleutian Islands and Russia. The National Tsunami Warning Center in Palmer, Alaska, cancelled the advisory because the tsunami no longer posed a threat.

world Updated: Jul 18, 2017 19:44 IST
A woman is silhouetted as she carries bricks from the debris of a monastery damaged during the 2015 earthquake, in Swayambhunath Stupa, in Kathmandu, Nepal.
A woman is silhouetted as she carries bricks from the debris of a monastery damaged during the 2015 earthquake, in Swayambhunath Stupa, in Kathmandu, Nepal.(REUTERS/Representative image)

A powerful earthquake of magnitude 7.8 struck in the northern Pacific Ocean between the tip of Alaska’s Aleutian Islands and Russia’s Kamchatka Peninsula, the US Geological Survey said on Monday.

The quake struck at 11:34 am on Tuesday (2334 GMT on Monday) some 125 miles (200 km) from the city of Nikol’skoye on Bering island off the Kamchatka Peninsula. The epicentre was west of Attu, the westernmost and largest island in the Near Islands group of Alaska’s remote Aleutian Islands.

The earthquake was very shallow, only 6 miles (10 km) below the seabed, which would have amplified its effect, but it was far from any mainland but it was far from any mainland and there were no immediate reports of any casualties or damage..

Map of Russia locating a 7.8-magnitude quake off the east coast on Monday. (AFP Photo)

The Kamchatka branch of Russia’s emergency situations ministry had warned that waves up to 50 cm (1-2/2 feet) high could reach Nikolskoye.

The US Pacific Tsunami Warning Center had warned earlier that “hazardous tsunami waves were possible for coasts within 300 km (186 miles) of the earthquake epicentre.” But it later said that based on all available data the tsunami threat from this earthquake had passed.

The quake was initially reported as a magnitude 7.7 before being revised down to 7.4 and finally upgraded to 7.8, a major quake normally capable of causing widespread and heavy damage when striking on or near land.

The quake was followed by numerous aftershocks, including several above magnitude 5.0.