Major magnitude 7.0 earthquake - North Pacific Ocean, 118 km east of Miyako, Iwate, Japan, on Wednesday, March 23, 1960 at 00:23 (GMT)

Major magnitude 7.0 earthquake - North Pacific Ocean, 118 km east of Miyako, Iwate, Japan, on Wednesday, March 23, 1960 at 00:23 (GMT)

Major magnitude 7.0 earthquake at 15 km depth

Date & time: Mar 23, 1960 00:23:28 UTC
Magnitude: 7
Depth: 15.0 km
Epicenter latitude / longitude: 39.635°N / 143.316°E (North Pacific Ocean, Japan)
Antipode: 39.635°S / 36.684°W
Nearest volcano: Nanashigure (194 km / 121 mi)
Nearby towns and cities:
118 km (73 mi) E of Miyako (pop: 51,700) --> See nearby quakes!
131 km (81 mi) ENE of Kamaishi (pop: 43,100) --> See nearby quakes!
151 km (94 mi) ENE of Ofunato (pop: 35,400) --> See nearby quakes!
182 km (113 mi) ESE of Hachinohe (pop: 239,000) --> See nearby quakes!
186 km (115 mi) E of Morioka (pop: 295,200) --> See nearby quakes!
191 km (119 mi) E of Hanamaki (pop: 73,100) --> See nearby quakes!
193 km (120 mi) ENE of Kitakami (pop: 93,900) --> See nearby quakes!
196 km (122 mi) ENE of Mizusawa (pop: 61,300) --> See nearby quakes!
415 km (258 mi) SSE of Sapporo (pop: 1,883,000) --> See nearby quakes!
542 km (337 mi) NE of Tokyo (pop: 8,336,600) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 1015 joules (554 gigawatt hours, equivalent to 4.8 x 105 tons of TNT or 29.8 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.
Mag.DepthLocationSource
7.015 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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Aftershocks

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Recorded aftershocks, latest first (11 quakes)

Date and timeMag
Depth
LocationDetails
Jun 19, 1961 07:38
61 years ago
6.0

35 km
North Pacific Ocean, 127 km E of Miyako, Iwate, JapanMore
Jun 19, 1961 02:45
61 years ago
5.7

25 km
North Pacific Ocean, 143 km E of Miyako, Iwate, JapanMore
Feb 23, 1961 04:16
61 years ago
6.2

15 km
North Pacific Ocean, 436 km NE of Tokyo, JapanMore
Aug 13, 1960 07:11
62 years ago
5.8

53 km
North Pacific Ocean, 83 km E of Hachinohe, Aomori, JapanMore
Jul 29, 1960 17:31
62 years ago
6.8

53 km
North Pacific Ocean, 73 km E of Hachinohe, Aomori, JapanMore
Jun 15, 1960 15:36
62 years ago
5.8

45 km
North Pacific Ocean, 90 km NE of Miyako, Iwate, JapanMore
Mar 23, 1960 22:22
62 years ago
6.2

15 km
North Pacific Ocean, 126 km E of Miyako, Iwate, JapanMore
Mar 23, 1960 11:51
62 years ago
5.8

25 km
North Pacific Ocean, 147 km E of Kamaishi, Iwate, JapanMore
Mar 23, 1960 10:28
62 years ago
5.9

25 km
North Pacific Ocean, 150 km E of Kamaishi, Iwate, JapanMore
Mar 23, 1960 08:46
62 years ago
5.9

15 km
North Pacific Ocean, 111 km E of Miyako, Iwate, JapanMore
Mar 23, 1960 01:07
62 years ago
6.4

15 km
North Pacific Ocean, 119 km E of Miyako, Iwate, JapanMore

Earlier earthquakes in the same area

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