Moderate mag. 4.7 earthquake - Gulf of Alaska, 19 mi west of Chernabura Island, Aleutians East County, Alaska, USA, on Friday, 20 August 1993 at 21:22 (GMT)

Moderate mag. 4.7 earthquake - Gulf of Alaska, 19 mi west of Chernabura Island, Aleutians East County, Alaska, USA, on Friday, 20 August 1993 at 21:22 (GMT)

Moderate magnitude 4.7 earthquake at 33 km depth

Date & time: 20 Aug 1993 21:22:47 UTC
Magnitude: 4.7
Depth: 33.0 km
Epicenter latitude / longitude: 54.816°N / 160.017°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Stepovak Bay 1 (117 km / 73 mi)
Nearby towns and cities:
66 km (41 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
134 km (83 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
150 km (93 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
152 km (94 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
177 km (110 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
179 km (111 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
191 km (118 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
217 km (135 mi) E of False Pass (pop: 40) --> See nearby quakes!
252 km (157 mi) SSW of Port Heiden (pop: 98) --> See nearby quakes!
380 km (236 mi) ENE of Akutan (pop: 1,040) --> 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
M 4.733 kmAlaska Peninsula (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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