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Major magnitude 8.4 earthquake - 233 km east of Miyako, Iwate, Japan, on Thursday, March 2, 1933 at 17:31 GMT

Major magnitude 8.4 earthquake - 233 km east of Miyako, Iwate, Japan, on Thursday, March 2, 1933 at 17:31 GMT Major magnitude 8.4 earthquake - 233 km east of Miyako, Iwate, Japan, on Thursday, March 2, 1933 at 17:31 GMT

Major magnitude 8.4 earthquake at 15 km depth

Date & time: Mar 2, 1933 17:31:00 UTC
Magnitude: 8.4
Depth: 15.0 km
Epicenter latitude / longitude: 39.209°N / 144.59°E (North Pacific Ocean, Japan)
Antipode: 39.209°S / 35.41°W
Nearby towns and cities:
229 km (142 mi) E of Yamada (Shimohei-gun) (pop: 20,100) --> See nearby quakes!
233 km (145 mi) E of Miyako (pop: 51,700) --> See nearby quakes!
235 km (146 mi) E of Kamaishi (pop: 43,100) --> See nearby quakes!
298 km (185 mi) E of Mizusawa (pop: 61,300) --> See nearby quakes!
298 km (185 mi) ENE of Ishinomaki (pop: 117,200) --> See nearby quakes!
299 km (186 mi) E of Kitakami (pop: 93,900) --> See nearby quakes!
300 km (186 mi) E of Hanamaki (pop: 73,100) --> See nearby quakes!
300 km (187 mi) E of Morioka (pop: 295,200) --> See nearby quakes!
340 km (211 mi) ENE of Sendai (pop: 1,063,100) --> See nearby quakes!
583 km (362 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 1017 joules (69775 gigawatt hours, equivalent to 6 x 107 tons of TNT or 3752.2 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
8.415 km1933 Sanriku (Sanriku-oki) Earthquake, 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

[More info]

Recorded aftershocks, latest first (20 quakes)

Date and timeMag
Depth
LocationDetails
Mar 2, 1936 03:19
86 years ago
6.7

25 km
129 km S of Kushiro, Hokkaido, JapanMore
Oct 18, 1935 14:53
87 years ago
6.4

15 km
248 km E of Morioka, Iwate, JapanMore
Oct 18, 1935 00:12
87 years ago
7.1

15 km
251 km E of Morioka, Iwate, JapanMore
Oct 12, 1935 16:45
87 years ago
7.0

15 km
132 km NE of Miyako, Iwate, JapanMore
Oct 2, 1935 05:32
87 years ago
6.4

35 km
68 km S of Shikotan, Sakhalin Oblast, RussiaMore
Sep 11, 1935 14:04
87 years ago
7.2

35 km
47 km S of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
Jul 19, 1935 00:49
87 years ago
6.7

10 km
84 km SE of Iwaki, Fukushima, JapanMore
Mar 30, 1935 21:19
87 years ago
6.3

35 km
93 km E of Namie, Futaba-gun, Fukushima, JapanMore
Jun 13, 1934 01:50
88 years ago
6.3

70 km
88 km E of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
Apr 6, 1934 19:09
88 years ago
5.9

35 km
31 km E of Namie, Futaba-gun, Fukushima, JapanMore
Jul 20, 1933 23:13
89 years ago
5.8

15 km
282 km E of Miyako, Iwate, JapanMore
Jul 9, 1933 12:30
89 years ago
6.6

15 km
RussiaMore
Jul 9, 1933 01:30
89 years ago
6.4

15 km
RussiaMore
Jun 18, 1933 21:37
89 years ago
7.2

30 km
110 km E of Ishinomaki, Honshu-miyagi-ken, JapanMore
May 1, 1933 19:51
89 years ago
6.3

35 km
287 km E of Yuzhno-Kurilsk, Sakhalin Oblast, RussiaMore
Apr 23, 1933 07:13
89 years ago
6.4

15 km
147 km E of Kamaishi, Iwate, JapanMore
Apr 9, 1933 02:46
89 years ago
6.7

15 km
160 km E of Miyako, Iwate, JapanMore
Mar 11, 1933 14:22
89 years ago
6.3

15 km
138 km SE of Shikotan, Sakhalin Oblast, RussiaMore
Mar 3, 1933 09:38
89 years ago
6.3

15 km
190 km E of Miyako, Iwate, JapanMore
Mar 3, 1933 09:12
89 years ago
6.4

15 km
142 km E of Miyako, Iwate, JapanMore

Earlier earthquakes in the same area

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