Magnitude 6.6 - NEAR THE WEST COAST OF HONSHU, JAPAN

2004 October 23 08:56:00 UTC

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Earthquake Details

  • This event has been reviewed by a seismologist.
Magnitude6.6
Date-Time
Location37.231°N, 138.753°E
Depth16 km (9.9 miles) set by location program
RegionNEAR THE WEST COAST OF HONSHU, JAPAN
Distances 80 km (50 miles) SSW of Niigata, Honshu, Japan
85 km (50 miles) NE of Nagano, Honshu, Japan
95 km (60 miles) NNW of Maebashi, Honshu, Japan
195 km (120 miles) NNW of TOKYO, Japan
Location Uncertaintyhorizontal +/- 4.5 km (2.8 miles); depth fixed by location program
ParametersNST=283, Nph=283, Dmin=91.2 km, Rmss=0.98 sec, Gp= 32°,
M-type=teleseismic moment magnitude (Mw), Version=S
Source
  • USGS NEIC (WDCS-D)
Event IDuspyal
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Earthquake Summary Map

  • USGS News Release
  • Felt Reports

    MW 6.5 (NIED). At least 33 people killed, 2,900 injured, 395 buildings destroyed and 3,473 damaged in Niigata Prefecture. A high-speed train derailed; several roads, bridges and rail lines damaged; at least 151 landslides and 11 fires occurred; several gas, water and power lines damaged in Niigata Prefecture. Felt in Chiba, Fukushima, Gumma, Kanagawa, Miyagi, Saitama and Tokyo Prefectures.

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