Japan Earthquake Off Miyako Triggers Tsunami Warnings

A blue sign sitting on the side of a road next to the ocean (Photo by Fay on Unsplash )

A blue sign sitting on the side of a road next to the ocean (Photo by Fay on Unsplash)

Summary
  • Magnitude 7.4 quake struck off Miyako prompting tsunami warnings for northern coasts
  • Japan Meteorological Agency warned waves could reach about 3 meters 9.84 feet
  • Tide gauges reported maximum 0.8 meters 2.62 feet at Kujiko
  • Pacific Tsunami Warning Center said no threat to western US or British Columbia

A japan earthquake measuring magnitude 7.4 struck off the coast near Miyako, prompting tsunami warnings for northern Japanese coasts, the Japan Meteorological Agency said.

The agency placed the central Pacific coast of Hokkaido, Aomori Prefecture and Iwate Prefecture under a tsunami warning and said waves could reach about 9.84 feet three meters in height.

Officials reported tsunamis at several coastal stations but none exceeded about 2.62 feet 0.8 meters, with the highest recorded reading at Kujiko, according to agency statements.

Tsunami advisories were extended along other stretches of Japan’s coastline, including the eastern and western Pacific coasts of Hokkaido, the Japan Sea coast of Aomori Prefecture, and the Fukushima and Miyagi prefectures.

The Pacific Tsunami Warning Center said there was no threat to the western United States, including California, Oregon and Washington, and also noted no threat to Alaska or British Columbia in Canada.

Local Effects And Additional Reports

Separately, a report said a magnitude 7.5 quake shook a train in northern Japan to a stop and prompted tsunami warnings for Hokkaido, Aomori and Iwate prefectures.

That report warned waves up to about 10 feet were possible along some coasts in those prefectures, while other monitoring stations registered smaller wave heights.

Authorities halted rail services where shaking affected trains and issued local advisories to coastal communities, as instruments continued to record sea level changes at multiple stations.

Agencies continue to monitor conditions and to update warnings and advisories for coastal areas as officials assess observations from tide gauges and coastal monitoring stations.