Moderate mag. 4.9 earthquake - Gulf of Alaska, 37 mi east of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 24 April 1985 at 22:06 (GMT)

Moderate mag. 4.9 earthquake - Gulf of Alaska, 37 mi east of Simeonof Island, Aleutians East County, Alaska, USA, on Wednesday, 24 April 1985 at 22:06 (GMT)

Moderate magnitude 4.9 earthquake at 33 km depth

Date & time: 24 Apr 1985 22:06:49 UTC
Magnitude: 4.9
Depth: 33.0 km
Epicenter latitude / longitude: 55.066°N / 158.374°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Veniaminof (138 km / 86 mi)
Nearby towns and cities:
106 km (66 mi) SSE of Perryville (pop: 113) --> See nearby quakes!
135 km (84 mi) S of Chignik Lake (pop: 73) --> See nearby quakes!
138 km (86 mi) E of Sand Point (pop: 1,060) --> See nearby quakes!
139 km (86 mi) S of Chignik Lagoon (pop: 78) --> See nearby quakes!
206 km (128 mi) ESE of Nelson Lagoon (pop: 52) --> See nearby quakes!
209 km (130 mi) S of Port Heiden (pop: 98) --> See nearby quakes!
251 km (156 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
277 km (172 mi) E of Cold Bay (pop: 123) --> See nearby quakes!
465 km (289 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
476 km (296 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 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 4.933 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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