Very strong mag. 6.4 earthquake - 127 km east of Miyako, Iwate, Japan, on Friday, September 24, 1971 at 01:10 GMT
Quake Data | Interactive map | User Reports | Aftershocks | Earlier quakes here | Quakes in Japan | Iwate | Saitama | Tokyo
Very strong magnitude 6.4 earthquake at 22 km depth
1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
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
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||22 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 (0 quake)
So far, no aftershocks have been registered.