Moderate mag. 4.5 earthquake - Gulf of Alaska, 99 mi south of Kodiak, Alaska, USA, on Tuesday, 18 April 1978 at 02:18 (GMT)
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| Alaska | Alaska
Moderate magnitude 4.5 earthquake at 33 km depth
Date & time: 18 Apr 1978 02:18:08 UTC
Depth: 33.0 km
Epicenter latitude / longitude: 56.374°N / 152.845°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Unnamed 57.87°N/155.42°W (228 km / 142 mi)
Nearby towns and cities:
96 km (60 mi) SSE of Old Harbor (pop: 221) --> See nearby quakes!
156 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!
371 km (231 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
383 km (238 mi) S of Anchor Point (pop: 1,930) --> See nearby quakes!
385 km (239 mi) SSW of Fritz Creek (pop: 1,930) --> See nearby quakes!
459 km (285 mi) SSW of Kalifornsky (pop: 7,850) --> See nearby quakes!
469 km (292 mi) SSW of Soldotna (pop: 4,540) --> See nearby quakes!
474 km (295 mi) S of Kenai (pop: 7,660) --> See nearby quakes!
479 km (297 mi) SSW of Sterling (pop: 5,620) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 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.
|4.5||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.