Major Earthquake, Japan

A major undersea earthquake struck off the coast of Japan’s central island of Honshu this afternoon.

The magnitude 7.0 quake, which struck at 2:40 p.m. on Saturday the 19th of July 2008 New Zealand time, was located 125 km east-north-east of Iwaki, Honshu (130 km east-south-east of Sendai, 305 km north-east of the capital Tokyo). The U.S. Geological Survey estimates the quake’s depth at 40 km.

The Pacific Tsunami Warning Centre issued bulletins for the Pacific and Hawaii at 2:49 p.m. reporting the quake at magnitude 6.6 at a depth of 10 km. The bulletin for the Pacific area stated that no destructive widespread tsunami threat existed based on historical data.

The Japan Meteorological Agency has issued a tsunami advisory for Miyagi and Fukushima prefectures advising that tsunami waves of about 0.5 metres were “expected to arrive right away” in Miyagi Prefecture.

The quake was followed 8 minutes later by a magnitude 5.3 earthquake nearby.

[Compiled from data supplied by the U.S. Geological Survey and its contributing agencies; the U.S. National Oceanic & Atmospheric Administration’s Pacific Tsunami Warning Centre, and the Japan Meteorological Agency.]

One Response to “Major Earthquake, Japan”

  1. Ken says:

    Update at 16:35 NZST

    Japan Meteorological Agency reports waves with a maximum height of 20 cm were recorded from 3:16 p.m. NZST (12:16 JST) and the tsunami advisories for parts of the Honshu coast have now been cancelled.

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