Is there risk in Oregon from 7.7 magnitude quake off Japan?

A 7.7 magnitude earthquake shook northern Japan on Monday, elevating that country's risk advisory for a "mega-quake."

7.7 quake hits north of Japan; brings slightly elevated risk of mega-quake

A large earthquake prompted a short-lived tsunami warning and a slightly higher-than-average risk of a mega-quake. The Cabinet Office, along with the Japan Meteorological Agency, said the risk of a mega-quake was increased from the typical .

Six hurt but no serious damage from powerful quake that struck Japan on April 20

The jolt shook large buildings in the capital, hundreds of kilometres from the epicentre. Read more at straitstimes.com. Read more at straitstimes.com.