Moderate mag. 4.7 earthquake - 87 km west of Noshiro, Akita, Japan, on Sunday, June 12, 1983 at 03:00 GMT
Quake Data | Interactive map | User Reports | Earlier quakes here | Quakes in Japan | Akita | Aomori | Yamagata | Iwate | Honshu-miyagi-ken | Tokyo


Moderate magnitude 4.7 earthquake at 33 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Earthquake details
Date & time | Jun 12, 1983 03:00:11 UTC |
Local time at epicenter | |
Status | Confirmed |
Magnitude | 4.7 |
Depth | 33.0 km |
Epicenter latitude / longitude | 40.232°N / 139.002°E ![]() |
Antipode | 40.232°S / 40.998°W |
Shaking intensity | Light shaking near epicenter |
Felt | 0 reports |
Primary data source | USGS (United States Geological Survey) |
Nearest volcano | Megata (69 km / 43 mi) |
Nearby towns and cities | 87 km (54 mi) W of Noshiro (pop: 51,100) | Show on map | Quakes nearby 90 km (56 mi) WNW of Tennō (Katagami) (pop: 22,700) | Show on map | Quakes nearby 111 km (69 mi) WNW of Akita (pop: 320,100) | Show on map | Quakes nearby 131 km (81 mi) WSW of Hirosaki (pop: 175,000) | Show on map | Quakes nearby 132 km (82 mi) W of Ōdate (pop: 64,500) | Show on map | Quakes nearby 160 km (100 mi) WSW of Aomori (pop: 298,400) | Show on map | Quakes nearby 164 km (102 mi) NNW of Sakata (pop: 100,400) | Show on map | Quakes nearby 192 km (120 mi) WNW of Morioka (pop: 295,200) | Show on map | Quakes nearby 271 km (169 mi) NW of Sendai (pop: 1,063,100) | Show on map | Quakes nearby 509 km (316 mi) N of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby |
Estimated seismic energy released | 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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 |
4.7 | 33 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.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!