Very strong mag. 6.9 earthquake - Ostrov Shumshu, 29 km east of Severo-Kuril'sk, Sakhalin Oblast, Russia, on Friday, September 4, 1953 at 07:23 GMT
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Very strong magnitude 6.9 earthquake at 56 km depth
Magnitude: 6.9
Depth: 56.3 km
Epicenter latitude / longitude: 50.645°N / 156.532°E

Antipode: 50.645°S / 23.468°W
Nearest volcano: Ebeko (36 km / 22 mi)
Nearby towns and cities:
29 km (18 mi) E of Severo-Kuril'sk (pop: 2,420) --> See nearby quakes!
95 km (59 mi) S of Ozernovskiy (pop: 2,620) --> See nearby quakes!
284 km (176 mi) SSW of Paratunka (pop: 1,770) --> See nearby quakes!
285 km (177 mi) SSW of Vilyuchinsk (Yelizovsky District) (pop: 25,200) --> See nearby quakes!
305 km (190 mi) SSW of Petropavlovsk-Kamchatskiy (pop: 187,300) --> See nearby quakes!
310 km (193 mi) SSW of Yelizovo (pop: 40,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1015 joules (392 gigawatt hours, equivalent to 3.4 x 105 tons of TNT or 21.1 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 |
6.9 | 56 km | Kuril Islands (Russia) | 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 (7 quakes)
Date and time![]() | Mag Depth | Location | Details |
Dec 13, 1953 06:56 68 years ago | 6.0 20 km | 284 km S of Petropavlovsk-Kamchatskiy, Kamchatka, Russia | More |
Nov 10, 1953 23:40 69 years ago | 6.6 57 km | 47 km E of Ostrov Kambal’nyy Island, Kamchatka, Russia | More |
Oct 28, 1953 12:09 69 years ago | 6.0 35 km | 55 km S of Ostrov Dym Island, Sakhalin Oblast, Russia | More |
Oct 11, 1953 13:08 69 years ago | 6.6 50 km | 49 km S of Ostrov Ptenets Island, Sakhalin Oblast, Russia | More |
Sep 26, 1953 01:02 69 years ago | 6.1 46 km | 45 km SE of Ostrov Kambal’nyy Island, Kamchatka, Russia | More |
Sep 23, 1953 02:14 69 years ago | 6.6 55 km | 38 km SE of Ostrov Ptenets Island, Sakhalin Oblast, Russia | More |
Sep 5, 1953 18:58 69 years ago | 6.1 51 km | 33 km SE of Ostrov Serdtse Alaida Island, Kamchatka, Russia | More |
Earlier earthquakes in the same area
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