Strong mag. 6.5 earthquake - North Pacific Ocean, 35 km southeast of Ostrov Ptenets Island, Sakhalin Oblast, Russia, on Sunday, August 18, 1957 at 21:42 (GMT)
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Strong magnitude 6.5 earthquake at 57 km depth
Depth: 57.4 km
Epicenter latitude / longitude: 50.057°N / 156.229°E (North Pacific Ocean, Russia)
Antipode: 50.057°S / 23.771°W
Nearest volcano: Vernadskii Ridge (58 km / 36 mi)
Nearby towns and cities:
69 km (43 mi) S of Severo-Kuril'sk (pop: 2,420) --> See nearby quakes!
161 km (100 mi) S of Ozernovskiy (pop: 2,620) --> See nearby quakes!
352 km (219 mi) SSW of Paratunka (pop: 1,770) --> See nearby quakes!
353 km (220 mi) SSW of Vilyuchinsk (Yelizovsky District) (pop: 25,200) --> See nearby quakes!
373 km (232 mi) SSW of Petropavlovsk-Kamchatskiy (pop: 187,300) --> See nearby quakes!
379 km (235 mi) SSW of Yelizovo (pop: 40,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 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.
|6.5||57 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.
Recorded aftershocks, latest first (2 quakes)
|Date and time||Mag|
|Oct 25, 1957 10:03|
64 years ago
|North Pacific Ocean, 26 km E of Ostrov Chaykina Island, Sakhalin Oblast, Russia||More|
|Sep 7, 1957 06:48|
64 years ago
|North Pacific Ocean, 49 km SE of Ostrov Ptenets Island, Sakhalin Oblast, Russia||More|