Homecascadia faults 4.7M earthquake recorded off the Oregon Coast byThe Great Pacific Northwest Earthquake -October 24, 2021 PORTLAND, Ore. — A 4.7 magnitude earthquake struck off the Oregon Coast early Sunday morning, according to a report from the United States Geological Survey. More Tags cascadia faults Oregon Earthquake 2021 Pacific Northwest Seismic Network seatthe area earthquakes Facebook Twitter Share:4.7M earthquake recorded off the Oregon Coast Facebook Twitter WhatsApp Pinterest LinkedIn Reddit Tumblr Telegram Email