Moderate mag. 4.8 earthquake - 43 km southwest of Noshiro, Akita, Japan, on Sunday, September 18, 1983 at 13:12 GMT
Moderate magnitude 4.8 earthquake at 41 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Earthquake details
| Date & time | Sep 18, 1983 13:12:39 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 4.8 |
| Depth | 41.2 km |
| Epicenter latitude / longitude | 39.961°N / 139.634°E  (Japan Sea, Japan) |
| Antipode | 39.961°S / 40.366°W |
| Shaking intensity | Light shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Megata (8 km / 5 mi) |
| Nearby towns and cities | 475 km (295 mi) N of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby |
| Estimated seismic energy released | 1 x 1012 joules (278 megawatt hours, equivalent to 239 tons of TNT) | about seismic energy |
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Mag. | Depth | Location | Source |
| 4.8 | 41 km | near the west coast of Honshu, Japan | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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