Strong mag. 6.4 earthquake - Gulf of Alaska, 14 mi west of Sutwik Island, Lake and Peninsula County, Alaska, USA, on Tuesday, 1 January 1963 at 23:39 (GMT)
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Strong magnitude 6.4 earthquake at 75 km depth
Magnitude: 6.4
Depth: 74.8 km
Epicenter latitude / longitude: 56.575°N / 157.542°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Aniakchak (51 km / 32 mi)
Nearby towns and cities:
62 km (38 mi) ENE of Chignik (pop: 87) --> See nearby quakes!
78 km (48 mi) ESE of Port Heiden (pop: 98) --> See nearby quakes!
83 km (52 mi) ENE of Chignik Lake (pop: 73) --> See nearby quakes!
124 km (77 mi) NE of Perryville (pop: 113) --> See nearby quakes!
230 km (143 mi) NE of Sand Point (pop: 1,060) --> See nearby quakes!
338 km (210 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
343 km (213 mi) ENE of King Cove (pop: 1,010) --> See nearby quakes!
490 km (304 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
5951 km (3698 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
5951 km (3698 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) More info
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.
| Magnitude | Depth | Location | Source |
| M 6.4 | 75 km | Alaska Peninsula (USA) | 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 yet. If you felt it be the first to report it!
So far, no aftershocks have been registered.
Aftershocks of the 6.4 quake Gulf of Alaska, 14 mi west of Sutwik Island, Lake and Peninsula County, Alaska, USA, 1 January 1963 23:39 GMT
More info
Recorded aftershocks, latest first (0 quakes):So far, no aftershocks have been registered.
Earlier earthquakes in the same area
Strong mag. 6.4 earthquake - Gulf of Alaska, 14 mi west of Sutwik Island, Lake and Peninsula County, Alaska, USA, on Tuesday, 1 January 1963 at 23:39 (GMT)
Click here to search our database for earlier earthquakes in the same area since 1900!
