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Very strong mag. 6.4 earthquake - 261 km southeast of Morioka, Iwate, Japan, on Monday, June 17, 1968 at 18:57 GMT

Very strong mag. 6.4 earthquake - 261 km southeast of Morioka, Iwate, Japan, on Monday, June 17, 1968 at 18:57 GMT

Very strong magnitude 6.4 earthquake at 25 km depth

Date & time: Jun 17, 1968 18:57:30 UTC
Magnitude: 6.4
Depth: 25.0 km
Epicenter latitude / longitude: 38.745°N / 143.918°E (North Pacific Ocean, Japan)
Antipode: 38.745°S / 36.082°W
Nearby towns and cities:
187 km (116 mi) ESE of Kamaishi (pop: 43,100) --> See nearby quakes!
188 km (117 mi) ESE of Ōtsuchi (Kamihei-gun) (pop: 16,500) --> See nearby quakes!
188 km (117 mi) ESE of Yamada (Shimohei-gun) (pop: 20,100) --> See nearby quakes!
194 km (121 mi) E of Ofunato (pop: 35,400) --> See nearby quakes!
198 km (123 mi) ESE of Miyako (pop: 51,700) --> See nearby quakes!
231 km (143 mi) E of Ishinomaki (pop: 117,200) --> See nearby quakes!
261 km (162 mi) ESE of Morioka (pop: 295,200) --> See nearby quakes!
271 km (168 mi) ENE of Sendai (pop: 1,063,100) --> See nearby quakes!
505 km (314 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
528 km (328 mi) NE of Yokohama (pop: 3,574,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | about seismic energy
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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.
6.425 kmoff the east coast of Honshu, JapanUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from 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.
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Recorded aftershocks, latest first (1 quake)

Date and timeMag
Aug 16, 1968 10:39
54 years ago

15 km
472 km NE of Tokyo, JapanMore

Earlier earthquakes in the same area

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