2004 Chūetsu earthquake
| 新潟県中越地震 | |
| UTC time | 2004-10-23 08:56:00 |
|---|---|
| ISC event | 7421058 |
| USGS-ANSS | ComCat |
| Local date | October 23, 2004 |
| Local time | 17:56 Japan Standard Time |
| Magnitude | 6.6 Mw |
| Depth | 13 km |
| Fault | Muikamachi Fault |
| Areas affected | Japan, Niigata Prefecture |
| Max. intensity | JMA 7 (MMI IX) |
| Peak acceleration | 2.56 g |
| Casualties | 68 dead, 4,805 injured |
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The Chūetsu earthquakes (中越地震, Chūetsu jishin) occurred in Niigata Prefecture, Japan, at 17:56 local time (08:56 UTC) on Saturday, October 23, 2004. The Japan Meteorological Agency (JMA) named it the "Heisei 16 Niigata Prefecture Chuetsu Earthquake" (平成16年新潟県中越地震, Heisei ju-roku-nen Niigata-ken Chuetsu Jishin). Niigata Prefecture is located in the Hokuriku region of Honshu, the largest island of Japan. The initial earthquake had a magnitude of 6.6 and caused noticeable shaking across almost half of Honshu, including parts of the Tōhoku, Hokuriku, Chūbu, and Kantō regions.