Moderate mag. 4.6 earthquake - Gulf of Alaska, 99 mi south of Kodiak, Alaska, USA, on Wednesday, 12 April 1978 at 04:47 (GMT)
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Moderate magnitude 4.6 earthquake at 15 km depth
Date & time: 12 Apr 1978 04:47:16 UTC
Depth: 15.0 km
Epicenter latitude / longitude: 56.352°N / 152.559°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (242 km / 150 mi)
Nearby towns and cities:
105 km (65 mi) SSE of Old Harbor (pop: 221) --> See nearby quakes!
119 km (74 mi) ESE of Akhiok (pop: 72) --> See nearby quakes!
148 km (92 mi) S of Womens Bay (pop: 719) --> See nearby quakes!
157 km (98 mi) S of Kodiak Station (pop: 1,300) --> See nearby quakes!
158 km (98 mi) SE of Larsen Bay (pop: 88) --> See nearby quakes!
160 km (99 mi) S of Kodiak (pop: 6,250) --> See nearby quakes!
170 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!
384 km (238 mi) S of Fritz Creek (pop: 1,930) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) 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.
|4.6||15 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.