Very strong mag. 6.4 earthquake - 261 km southeast of Morioka, Iwate, Japan, on Monday, June 17, 1968 at 18:57 GMT
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Very strong magnitude 6.4 earthquake at 25 km depth
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
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.
|6.4||25 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.
Recorded aftershocks, latest first (1 quake)
|Date and time||Mag|
|Aug 16, 1968 10:39|
54 years ago
|472 km NE of Tokyo, Japan||More|