Strong mag. 6.1 earthquake - North Pacific Ocean, 549 km northeast of Tokyo, Japan, on Friday, 17 May 1968 at 18:17 (GMT)
Quake Data | Interactive map | User Reports | Aftershocks | Earlier quakes in same area | Quakes in Japan | Iwate | Aomori | Hokkaido | Tokyo
Strong magnitude 6.1 earthquake at 35 km depth
Magnitude: 6.1
Depth: 34.9 km
Epicenter latitude / longitude: 39.684°N / 143.366°E
(North Pacific Ocean, Japan)Nearest volcano: Nanashigure (197 km / 122 mi)
Nearby towns and cities:
122 km (76 mi) E of Miyako (pop: 51,700) --> See nearby quakes!
124 km (77 mi) ENE of Yamada (Shimohei-gun) (pop: 20,100) --> See nearby quakes!
131 km (81 mi) ENE of Ōtsuchi (Kamihei-gun) (pop: 16,500) --> See nearby quakes!
136 km (85 mi) ENE of Kamaishi (pop: 43,100) --> See nearby quakes!
157 km (98 mi) ENE of Ōfunato (pop: 35,400) --> See nearby quakes!
183 km (114 mi) ESE of Hachinohe (pop: 239,000) --> See nearby quakes!
190 km (118 mi) E of Morioka (pop: 295,200) --> See nearby quakes!
198 km (123 mi) ENE of Kitakami (pop: 93,900) --> See nearby quakes!
412 km (256 mi) SSE of Sapporo (pop: 1,883,000) --> See nearby quakes!
549 km (341 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 atomic bombs!) More info
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.
| Magnitude | Depth | Location | Source |
| M 6.1 | 35 km | off the east 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.
There are no user reports for this quake yet. If you felt it be the first to report it!
Aftershocks of the 6.1 quake North Pacific Ocean, 549 km northeast of Tokyo, Japan, 17 May 1968 18:17 GMT
More info
Recorded aftershocks, latest first (7 quakes):- 25 Aug 1968 09:13 UTC| M 5.7 |21.5 km (13.4 mi) depth|41 km (26 mi) distance| USGS | Details
- 25 Aug 1968 09:07 UTC| M 5.7 |21 km (13 mi) depth|47 km (29 mi) distance| USGS | Details
- 12 Jul 1968 03:56 UTC| M 6.0 |19.9 km (12.4 mi) depth|10 km (6 mi) distance| USGS | Strong mag. 6.0 earthquake - North Pacific Ocean, 539 km northeast of Tokyo, Japan, on Friday, 12 July 1968 at 03:56 (GMT)
- 12 Jul 1968 00:44 UTC| M 6.0 |21.8 km (13.5 mi) depth|18 km (11 mi) distance| USGS | Strong mag. 6.0 earthquake - North Pacific Ocean, 531 km northeast of Tokyo, Japan, on Friday, 12 July 1968 at 00:44 (GMT)
- 25 Jun 1968 23:33 UTC| M 5.8 |20.7 km (12.9 mi) depth|22 km (14 mi) distance| USGS | Details
- 13 Jun 1968 21:10 UTC| M 6.2 |30 km (18.6 mi) depth|37 km (23 mi) distance| USGS | Strong mag. 6.2 earthquake - North Pacific Ocean, 512 km northeast of Tokyo, Japan, on Thursday, 13 June 1968 at 21:10 (GMT)
- 12 Jun 1968 13:41 UTC| M 7.0 |32.1 km (19.9 mi) depth|32 km (20 mi) distance| USGS | Major magnitude. 7.0 earthquake - North Pacific Ocean, 518 km northeast of Tokyo, Japan, on Wednesday, 12 June 1968 at 13:41 (GMT)
Earlier earthquakes in the same area
Strong mag. 6.1 earthquake - North Pacific Ocean, 549 km northeast of Tokyo, Japan, on Friday, 17 May 1968 at 18:17 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!
