Moderate mag. 4.7 earthquake - Gulf of Alaska, 99 mi south of Kodiak, Alaska, USA, on Sunday, 21 May 1978 at 14:55 (GMT)
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Moderate magnitude 4.7 earthquake at 33 km depth
Date & time: 21 May 1978 14:55:32 UTC
Depth: 33.0 km
Epicenter latitude / longitude: 56.356°N / 152.582°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (240 km / 149 mi)
Nearby towns and cities:
104 km (65 mi) SSE of Old Harbor (pop: 221) --> See nearby quakes!
117 km (73 mi) ESE of Akhiok (pop: 72) --> See nearby quakes!
148 km (92 mi) S of Womens Bay (pop: 719) --> See nearby quakes!
157 km (97 mi) SE of Larsen Bay (pop: 88) --> See nearby quakes!
157 km (97 mi) S of Kodiak Station (pop: 1,300) --> See nearby quakes!
160 km (99 mi) S of Kodiak (pop: 6,250) --> See nearby quakes!
169 km (105 mi) S of Port Lions (pop: 197) --> See nearby quakes!
371 km (230 mi) S of Homer (pop: 5,520) --> See nearby quakes!
383 km (238 mi) S of Anchor Point (pop: 1,930) --> See nearby quakes!
383 km (238 mi) S 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
Data for the same earthquake reported by different agencies
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|4.7||33 km||Kodiak Island region, Alaska (USA)||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.