Strong mag. 6.1 earthquake - North Pacific Ocean, 129 km northeast of Miyako, Iwate, Japan, on Saturday, 25 May 1968 at 11:52 (GMT)
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Strong magnitude 6.1 earthquake at 32 km depth
Magnitude: 6.1
Depth: 31.8 km
Epicenter latitude / longitude: 40.179°N / 143.29°E

Nearest volcano: Osore-yama (184 km / 114 mi)
Nearby towns and cities:
129 km (80 mi) ENE of Miyako (pop: 51,700) --> See nearby quakes!
139 km (87 mi) NE of Yamada (Shimohei-gun) (pop: 20,100) --> See nearby quakes!
149 km (93 mi) NE of Ōtsuchi (Kamihei-gun) (pop: 16,500) --> See nearby quakes!
156 km (97 mi) ESE of Hachinohe (pop: 239,000) --> See nearby quakes!
158 km (98 mi) NE of Kamaishi (pop: 43,100) --> See nearby quakes!
171 km (106 mi) ESE of Misawa (pop: 42,800) --> See nearby quakes!
190 km (118 mi) ENE of Morioka (pop: 295,200) --> See nearby quakes!
211 km (131 mi) ENE of Kitakami (pop: 93,900) --> See nearby quakes!
359 km (223 mi) SSE of Sapporo (pop: 1,883,000) --> See nearby quakes!
591 km (367 mi) NNE 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 | 32 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.
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There are no user reports for this quake yet. If you felt it Aftershocks of the 6.1 quake North Pacific Ocean, 129 km northeast of Miyako, Iwate, Japan, 25 May 1968 11:52 GMT
More info
Recorded aftershocks, latest first (8 quakes):- 13 Nov 1968 18:41 UTC| M 6.2 |46 km (28.6 mi) depth|46 km (29 mi) distance| USGS | Strong mag. 6.2 earthquake - North Pacific Ocean, 92 km northeast of Miyako, Iwate, Japan, on Wednesday, 13 November 1968 at 18:41 (GMT)
- 11 Nov 1968 14:41 UTC| M 5.9 |27.1 km (16.8 mi) depth|13 km (8 mi) distance| USGS | Details
- 25 Aug 1968 09:13 UTC| M 5.7 |21.5 km (13.4 mi) depth|16 km (10 mi) distance| USGS | Details
- 25 Aug 1968 09:07 UTC| M 5.7 |21 km (13 mi) depth|14 km (9 mi) distance| USGS | Details
- 23 Jul 1968 23:02 UTC| M 6.0 |26.7 km (16.6 mi) depth|29 km (18 mi) distance| USGS | Strong mag. 6.0 earthquake - North Pacific Ocean, 170 km east of Hachinohe, Aomori, Japan, on Tuesday, 23 July 1968 at 23:02 (GMT)
- 12 Jul 1968 03:56 UTC| M 6.0 |19.9 km (12.4 mi) depth|62 km (38 mi) distance| USGS | Strong mag. 6.0 earthquake - North Pacific Ocean, 115 km east of Miyako, Iwate, Japan, on Friday, 12 July 1968 at 03:56 (GMT)
- 10 Jul 1968 20:40 UTC| M 5.9 |20 km (12.4 mi) depth|16 km (10 mi) distance| USGS | Details
- 22 Jun 1968 01:12 UTC| M 6.1 |18.2 km (11.3 mi) depth|48 km (30 mi) distance| USGS | Strong mag. 6.1 earthquake - North Pacific Ocean, 192 km east of Hachinohe, Aomori, Japan, on Saturday, 22 June 1968 at 01:12 (GMT)
Earlier earthquakes in the same area
Strong mag. 6.1 earthquake - North Pacific Ocean, 129 km northeast of Miyako, Iwate, Japan, on Saturday, 25 May 1968 at 11:52 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!