Major magnitude 6.5 earthquake - North Pacific Ocean, 26 mi southeast of Tigalda Island, Aleutians East County, Alaska, USA, on Wednesday, 6 February 1974 at 04:04 (GMT)
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Major magnitude 6.5 earthquake at 2 km depth
Date & time: 6 Feb 1974 04:04:07 UTC
Magnitude: 6.5
Depth: 2.0 km
Epicenter latitude / longitude: 53.799°N / 164.672°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Westdahl (80 km / 50 mi)
Nearby towns and cities:
81 km (51 mi) ESE of Akutan (pop: 1,040) --> See nearby quakes!
122 km (76 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
123 km (77 mi) E of Dutch Harbor (pop: 4,380) --> See nearby quakes!
143 km (89 mi) SW of False Pass (pop: 40) --> See nearby quakes!
199 km (124 mi) SW of Cold Bay (pop: 123) --> See nearby quakes!
207 km (129 mi) SW of King Cove (pop: 1,010) --> See nearby quakes!
294 km (183 mi) ENE of Nikolski (pop: 18) --> See nearby quakes!
319 km (198 mi) WSW of Sand Point (pop: 1,060) --> See nearby quakes!
330 km (205 mi) SW of Nelson Lagoon (pop: 52) --> See nearby quakes!
425 km (264 mi) WSW of Perryville (pop: 113) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 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.
| Magnitude | Depth | Location | Source |
| M 6.5 | 2 km | Unimak 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.
There are no user reports for this quake yet. If you felt it be the first to report it!
Aftershocks
More info
Recorded aftershocks, latest first (4 quakes):- 02 Jun 1974 18:05 UTC| M 4.2 |72 km (44.7 mi) depth|70 km (43 mi) distance| USGS | Details
- 31 May 1974 03:13 UTC| M 4.8 |33 km (20.5 mi) depth|60 km (37 mi) distance| USGS | Details
- 14 May 1974 14:07 UTC| M 4.8 |27 km (16.8 mi) depth|67 km (42 mi) distance| USGS | Details
- 17 Feb 1974 21:19 UTC| M 4.7 |33 km (20.5 mi) depth|76 km (47 mi) distance| USGS | Details
Earlier earthquakes in the same area
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