Strong quake shakes Tokyo area; no damage seen

USGS National Earthquake Information Center
USGS National Earthquake Information Center

TOKYO (AP) — A strong earthquake shook the Tokyo area and eastern Japan early Wednesday, though no injuries or damage was immediately reported.

The Japan Meteorological Agency said the quake registered a magnitude of 6.9 but was centered offshore near Torishima, part of the Izu Islands about 600 kilometers (370 miles) south of Tokyo.

A quake of that magnitude is at the upper range of a “strong” earthquake capable of causing major damage to buildings in populated areas. Most buildings in Japan meet modern standards for earthquake resistance and would withstand shaking that might cause major damage elsewhere.

Despite the remoteness of the epicenter, tremors were felt from the north of the main island of Honshu to the west. In Tokyo, buildings swayed for several moments.

The national broadcaster NHK said some train lines stopped briefly for safety checks as a precaution. No tsunami alert was issued.

The U.S. Geological Survey measured the quake at 6.5 magnitude and said it was 404 kilometers (251 miles) deep.

In March 2011, a magnitude 9.0 earthquake offshore of northeastern Japan, and ensuing tsunami, killed more than 18,000 people and devastated the coastline for hundreds of miles. It also crippled the Fukushima Dai-ichi nuclear power plant, causing meltdowns in three of its reactors.

Japan’s Nuclear Regulation Authority said no abnormalities were reported at Fukushima and two other nuclear plants in northern Japan that were shaken by Wednesday morning’s quake.

The eastern-central region of Japan is said to be due for a major quake and smaller temblors are common.

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Earthquake information from the USGS

M6.5 – Izu Islands, Japan region
2013-09-04 00:18:24 UTC

Nearby Cities

  • 356km (221mi) SSW of Hachijo-jima, Japan
  • 494km (307mi) SSE of Shingu, Japan
  • 514km (319mi) S of Oyama, Japan
  • 515km (320mi) SSE of Owase, Japan
  • 637km (396mi) S of Tokyo, Japan

Scientific (Location and Magnitude contributed by: USGS, NEIC)

  • Magnitude: 6.5 Mwp ± 0.06
  • Location: 29.986°N, 138.811°E ± 12.1 km
  • Depth: 404.8 km ± 9.1 km
  • Minimum Distance: 359.6 km (3.23°)
  • Travel Time Residual: 1.29 sec
  • Azimuthal Gap: 38°
  • Review Status: MANUAL
  • Event ID: usb000jgfc
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