Strong mag. 5.8 earthquake - Gulf of Alaska, 32 mi southeast of Sitkinak Island, Kodiak Island, Alaska, USA, on Saturday, 18 April 1964 at 20:16 (GMT)
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Strong magnitude 5.8 earthquake at 23 km depth
Date & time: 18 Apr 1964 20:16:18 UTC
Depth: 22.5 km
Epicenter latitude / longitude: 56.125°N / 153.814°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Kialagvik (216 km / 134 mi)
Nearby towns and cities:
94 km (58 mi) SSE of Akhiok (pop: 72) --> See nearby quakes!
124 km (77 mi) SSW of Old Harbor (pop: 221) --> See nearby quakes!
187 km (116 mi) SSW of Womens Bay (pop: 719) --> See nearby quakes!
197 km (122 mi) SSW of Kodiak Station (pop: 1,300) --> See nearby quakes!
204 km (127 mi) SSW of Kodiak (pop: 6,250) --> See nearby quakes!
413 km (257 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
423 km (263 mi) SSW of Anchor Point (pop: 1,930) --> See nearby quakes!
428 km (266 mi) ENE of Sand Point (pop: 1,060) --> See nearby quakes!
428 km (266 mi) SSW of Fritz Creek (pop: 1,930) --> See nearby quakes!
511 km (318 mi) SSW of Seward (pop: 2,790) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.2 x 1013 joules (8.78 gigawatt hours, equivalent to 7558 tons of TNT or 0.5 atomic bombs!) More info
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.
|5.8||23 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.