Very strong mag. 6.2 earthquake - Gulf of Alaska, 178 mi south of Anchorage, Alaska, USA, on Tuesday, 23 April 1968 at 20:29 (GMT)

Very strong mag. 6.2 earthquake - Gulf of Alaska, 178 mi south of Anchorage, Alaska, USA, on Tuesday, 23 April 1968 at 20:29 (GMT)

Very strong magnitude 6.2 earthquake at 20 km depth

Date & time: 23 Apr 1968 20:29:15 UTC
Magnitude: 6.2
Depth: 20.1 km
Epicenter latitude / longitude: 58.645°N / 150.086°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Douglas (201 km / 125 mi)
Nearby towns and cities:
124 km (77 mi) SSE of Halibut Cove (pop: 76) --> See nearby quakes!
139 km (86 mi) SE of Homer (pop: 5,520) --> See nearby quakes!
140 km (87 mi) SSE of Fritz Creek (pop: 1,930) --> See nearby quakes!
166 km (103 mi) NE of Kodiak (pop: 6,250) --> See nearby quakes!
209 km (130 mi) SSE of Kalifornsky (pop: 7,850) --> See nearby quakes!
214 km (133 mi) S of Sterling (pop: 5,620) --> See nearby quakes!
222 km (138 mi) SSE of Kenai (pop: 7,660) --> See nearby quakes!
286 km (178 mi) S of Anchorage (pop: 298,700) --> See nearby quakes!
299 km (186 mi) S of Eagle River (pop: 24,800) --> See nearby quakes!
299 km (186 mi) S of Eagle River (Anchorage County) (pop: 24,800) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1014 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1.9 atomic bombs!) More info
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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.
MagnitudeDepthLocationSource
M 6.220 kmGulf of Alaska (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

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Aftershocks

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Recorded aftershocks, latest first (0 quakes):
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Earlier earthquakes in the same area

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