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Strong mag. 6.3 earthquake - 137 km east of Shikotan, Sakhalin Oblast, Russia, on Wednesday, May 21, 1986 at 05:47 GMT

Strong mag. 6.3 earthquake - 137 km east of Shikotan, Sakhalin Oblast, Russia, on Wednesday, May 21, 1986 at 05:47 GMT

Strong magnitude 6.3 earthquake at 39 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: May 21, 1986 05:47:10 UTC
Magnitude: 6.3
Depth: 39.1 km
Epicenter latitude / longitude: 43.684°N / 148.416°E (North Pacific Ocean, Russia)
Antipode: 43.684°S / 31.584°W
Nearest volcano: Urbich Caldera (141 km / 88 mi)
Nearby towns and cities:
137 km (85 mi) E of Shikotan (pop: 2,100) --> See nearby quakes!
177 km (110 mi) SSE of Kuril'sk (pop: 1,720) --> See nearby quakes!
208 km (129 mi) E of Yuzhno-Kurilsk (pop: 6,470) --> See nearby quakes!
209 km (130 mi) E of Otrada (pop: 3,220) --> See nearby quakes!
233 km (145 mi) E of Nemuro (Japan) (pop: 31,200) --> See nearby quakes!
264 km (164 mi) E of Shibetsu (Japan) (pop: 21,700) --> See nearby quakes!
335 km (208 mi) E of Abashiri (Japan) (pop: 42,500) --> See nearby quakes!
336 km (209 mi) ENE of Kushiro (Japan) (pop: 183,600) --> See nearby quakes!
347 km (216 mi) E of Motomachi (Abashiri District, Japan) (pop: 23,000) --> See nearby quakes!
364 km (226 mi) E of Kitami (Japan) (pop: 113,100) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 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
6.339 kmeast of the Kuril Islands (Russia)USGS
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 (13 quakes)

Date and timeMag
Depth
LocationDetails
Nov 14, 1986 11:08
36 years ago
4.9

39 km
135 km E of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
Sep 28, 1986 16:59
36 years ago
4.7

38 km
93 km E of Shikotan, Sakhalin Oblast, RussiaMore
Sep 14, 1986 13:54
36 years ago
5.1

49 km
72 km E of Shikotan, Sakhalin Oblast, RussiaMore
Sep 4, 1986 02:43
36 years ago
4.5

33 km
64 km E of Shikotan, Sakhalin Oblast, RussiaMore
Jul 2, 1986 13:23
36 years ago
4.9

47 km
RussiaMore
Jun 6, 1986 04:12
36 years ago
5.3

49 km
81 km E of Shikotan, Sakhalin Oblast, RussiaMore
May 29, 1986 21:56
36 years ago
4.5

33 km
RussiaMore
May 24, 1986 20:58
36 years ago
4.6

33 km
122 km E of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
May 22, 1986 13:39
36 years ago
4.8

34 km
137 km E of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
May 22, 1986 10:29
36 years ago
4.9

42 km
136 km E of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
May 21, 1986 17:51
36 years ago
5.0

33 km
127 km E of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, RussiaMore
May 21, 1986 06:52
36 years ago
5.1

39 km
147 km E of Shikotan, Sakhalin Oblast, RussiaMore
May 21, 1986 06:16
36 years ago
5.1

40 km
135 km E of Shikotan, Sakhalin Oblast, RussiaMore

Earlier earthquakes in the same area

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