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Major mag. 8.5 Earthquake - North Pacific Ocean, 134 km east of Staten Island, Kurilsky District, Sakhalin Oblast, Russia, on Sunday, Oct 13, 1963, at 03:17 pm (GMT +10)

A powerful magnitude 8.5 earthquake occurred in the North Pacific Ocean 73 km (45 mi) from  Russia in the early afternoon of Sunday, Oct 13, 1963 at 3.17 pm local time (GMT +10). The quake had a shallow depth of 35 km (22 mi) .

Major mag. 8.5 Earthquake - North Pacific Ocean, 134 km east of Staten Island, Kurilsky District, Sakhalin Oblast, Russia, on Sunday, Oct 13, 1963, at 03:17 pm (GMT +10) Major mag. 8.5 Earthquake - North Pacific Ocean, 134 km east of Staten Island, Kurilsky District, Sakhalin Oblast, Russia, on Sunday, Oct 13, 1963, at 03:17 pm (GMT +10)

Major magnitude 8.5 earthquake at 35 km depth

Earthquake details

Date & timeOct 13, 1963 05:17:59 UTC
Local time at epicenterSunday, Oct 13, 1963, at 03:17 pm (GMT +10)
StatusConfirmed
Magnitude8.5
Depth35.0 km
Epicenter latitude / longitude44.872°N / 149.483°E North Pacific Ocean, Russia
Seismic antipode44.872°S / 30.517°W
Shaking intensitySevere shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoMedvezhia (76 km / 47 mi)
Estimated seismic energy released3.5 x 1017 joules (98559 gigawatt hours, equivalent to 8.5 x 107 tons of TNT or 5300.2 atomic bombs!) | about seismic energy
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Earthquake statistics

Average number of earthquakes

Based on data from the past 10 years and our earthquake archive back to 1900, there are about 231 quakes on average per year in the area near the epicenter of this quake (within 100 km/61 mi):
  • Mag. 8 or higher: 0.02 quakes per year (or 1 quake every 62.5 years)
  • Mag. 7 or higher: 0.11 quakes per year (or 1 quake every 8.8 years)
  • Mag. 6 or higher: 0.72 quakes per year (or 1 quake every 1.4 years)
  • Mag. 5 or higher: 9.2 quakes per year
  • Mag. 4 or higher: 34 quakes per year
  • Mag. 3 or higher: 38.9 quakes per year
  • Mag. 2 or higher: 38.9 quakes per year
The area where this quake occurred has a very high level of seismic activity. It has had at least 2 quakes above magnitude 8 since 1900, which suggests that larger earthquakes of this size occur infrequently, probably on average approximately every 60 to 65 years.

Number of quakes per year