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Very strong mag. 6.4 earthquake - 127 km east of Miyako, Iwate, Japan, on Friday, September 24, 1971 at 01:10 GMT

Very strong mag. 6.4 earthquake - 127 km east of Miyako, Iwate, Japan, on Friday, September 24, 1971 at 01:10 GMT

Very strong magnitude 6.4 earthquake at 22 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: Sep 24, 1971 01:10:02 UTC
Magnitude: 6.4
Depth: 22.0 km
Epicenter latitude / longitude: 39.345°N / 143.37°E (North Pacific Ocean, Japan)
Antipode: 39.345°S / 36.63°W
Nearest volcano: Nanashigure (209 km / 130 mi)
Nearby towns and cities:
123 km (76 mi) E of Yamada (Shimohei-gun) (pop: 20,100) --> See nearby quakes!
127 km (79 mi) ESE of Miyako (pop: 51,700) --> See nearby quakes!
129 km (80 mi) E of Kamaishi (pop: 43,100) --> See nearby quakes!
146 km (91 mi) ENE of Ofunato (pop: 35,400) --> See nearby quakes!
194 km (120 mi) E of Hanamaki (pop: 73,100) --> See nearby quakes!
194 km (121 mi) E of Kitakami (pop: 93,900) --> See nearby quakes!
194 km (121 mi) E of Mizusawa (pop: 61,300) --> See nearby quakes!
195 km (121 mi) E of Morioka (pop: 295,200) --> See nearby quakes!
503 km (313 mi) NE of Saitama (pop: 1,193,400) --> See nearby quakes!
520 km (323 mi) NE of Tokyo (pop: 8,336,600) --> 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.
6.422 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

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There are no user reports for this quake.
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Recorded aftershocks, latest first (0 quake)

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