Strong mag. 6.3 earthquake - 50 km east of Onekotan Island, Sakhalin Oblast, Russia, on Wednesday, October 19, 1955 at 09:54 GMT
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Strong magnitude 6.3 earthquake at 50 km depth
Magnitude: 6.3
Depth: 50.0 km
Epicenter latitude / longitude: 49.312°N / 155.412°E

Antipode: 49.312°S / 24.588°W
Nearest volcano: Tao-Rusyr (52 km / 32 mi)
Nearby towns and cities:
160 km (99 mi) SSW of Severo-Kuril'sk (pop: 2,420) --> See nearby quakes!
255 km (158 mi) SSW of Ozernovskiy (pop: 2,620) --> 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
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 |
6.3 | 50 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 (1 quake)
Date and time![]() | Mag Depth | Location | Details |
Jan 3, 1956 15:41 66 years ago | 5.8 57 km | 468 km SW of Petropavlovsk-Kamchatskiy, Kamchatka, Russia | More |
Earlier earthquakes in the same area
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