Moderate mag. 4.7 earthquake - Gulf of Alaska, 92 mi south of Kodiak, Alaska, USA, on Saturday, 22 April 1978 at 13:24 (GMT)

Moderate mag. 4.7 earthquake - Gulf of Alaska, 92 mi south of Kodiak, Alaska, USA, on Saturday, 22 April 1978 at 13:24 (GMT)

Moderate magnitude 4.7 earthquake at 33 km depth

Date & time: 22 Apr 1978 13:24:04 UTC
Magnitude: 4.7
Depth: 33.0 km
Epicenter latitude / longitude: 56.483°N / 152.824°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (220 km / 137 mi)
Nearby towns and cities:
85 km (53 mi) SSE of Old Harbor (pop: 221) --> See nearby quakes!
97 km (60 mi) ESE of Akhiok (pop: 72) --> See nearby quakes!
134 km (83 mi) S of Womens Bay (pop: 719) --> See nearby quakes!
137 km (85 mi) SSE of Larsen Bay (pop: 88) --> See nearby quakes!
143 km (89 mi) S of Kodiak Station (pop: 1,300) --> See nearby quakes!
147 km (92 mi) S of Kodiak (pop: 6,250) --> See nearby quakes!
154 km (96 mi) S of Port Lions (pop: 197) --> See nearby quakes!
359 km (223 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
371 km (230 mi) S of Anchor Point (pop: 1,930) --> See nearby quakes!
373 km (232 mi) SSW of Fritz Creek (pop: 1,930) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) 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
4.733 kmKodiak Island region, Alaska (USA)USGS
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User reports for this quake

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