Very strong mag. 6.6 earthquake - 121 km east of Miyako, Iwate, Japan, on Sunday, October 26, 1952 at 15:46 GMT
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Very strong magnitude 6.6 earthquake at 28 km depth
Magnitude: 6.6
Depth: 27.8 km
Epicenter latitude / longitude: 39.515°N / 143.336°E

Antipode: 39.515°S / 36.664°W
Nearest volcano: Nanashigure (200 km / 124 mi)
Nearby towns and cities:
119 km (74 mi) E of Yamada (Shimohei-gun) (pop: 20,100) --> See nearby quakes!
121 km (75 mi) E of Miyako (pop: 51,700) --> See nearby quakes!
129 km (80 mi) ENE of Kamaishi (pop: 43,100) --> See nearby quakes!
148 km (92 mi) ENE of Ofunato (pop: 35,400) --> See nearby quakes!
188 km (117 mi) E of Morioka (pop: 295,200) --> See nearby quakes!
191 km (119 mi) SE of Hachinohe (pop: 239,000) --> See nearby quakes!
191 km (119 mi) E of Hanamaki (pop: 73,100) --> See nearby quakes!
192 km (120 mi) E of Kitakami (pop: 93,900) --> See nearby quakes!
428 km (266 mi) SSE of Sapporo (pop: 1,883,000) --> See nearby quakes!
533 km (331 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 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.
Mag. | Depth | Location | Source |
6.6 | 28 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.
Aftershocks
[More info]
Recorded aftershocks, latest first (8 quakes)
Date and time![]() | Mag Depth | Location | Details |
Oct 31, 1952 16:37 70 years ago | 6.5 20 km | 144 km SE of Miyako, Iwate, Japan | More |
Oct 28, 1952 16:45 70 years ago | 6.0 15 km | 131 km E of Miyako, Iwate, Japan | More |
Oct 28, 1952 06:31 70 years ago | 6.3 15 km | 120 km E of Miyako, Iwate, Japan | More |
Oct 27, 1952 03:17 70 years ago | 6.5 23 km | 109 km E of Miyako, Iwate, Japan | More |
Oct 26, 1952 20:27 70 years ago | 5.9 23 km | 139 km E of Miyako, Iwate, Japan | More |
Oct 26, 1952 19:19 70 years ago | 6.3 24 km | 107 km E of Miyako, Iwate, Japan | More |
Oct 26, 1952 18:02 70 years ago | 6.5 25 km | 144 km E of Miyako, Iwate, Japan | More |
Oct 26, 1952 15:53 70 years ago | 6.5 28 km | 100 km E of Miyako, Iwate, Japan | More |
Earlier earthquakes in the same area
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