Very strong mag. 6.2 earthquake - Gulf of Alaska, 25 mi southeast of Tugidak Island, Kodiak Island County, Alaska, USA, on Sunday, 29 March 1964 at 06:04 (GMT)
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Very strong magnitude 6.2 earthquake at 26 km depth
Date & time: 29 Mar 1964 06:04:46 UTC
Magnitude: 6.2
Depth: 26.1 km
Epicenter latitude / longitude: 56.177°N / 154.342°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Kialagvik (186 km / 116 mi)
Nearby towns and cities:
86 km (54 mi) S of Akhiok (pop: 72) --> See nearby quakes!
131 km (81 mi) SSW of Old Harbor (pop: 221) --> See nearby quakes!
196 km (122 mi) SSW of Womens Bay (pop: 719) --> See nearby quakes!
206 km (128 mi) SSW of Kodiak Station (pop: 1,300) --> See nearby quakes!
214 km (133 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
396 km (246 mi) ENE of Sand Point (pop: 1,060) --> See nearby quakes!
419 km (260 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
427 km (265 mi) SSW of Anchor Point (pop: 1,930) --> See nearby quakes!
435 km (270 mi) SSW of Fritz Creek (pop: 1,930) --> See nearby quakes!
523 km (325 mi) SW of Lowell Point (pop: 2,790) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1014 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1.9 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 6.2 | 26 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.
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Aftershocks
More info
Recorded aftershocks, latest first (7 quakes):- 08 May 1964 16:21 UTC| M 5.8 |24 km (14.9 mi) depth|41 km (25 mi) distance| USGS | Details
- 18 Apr 1964 20:16 UTC| M 5.8 |22.5 km (14 mi) depth|33 km (21 mi) distance| USGS | Details
- 15 Apr 1964 15:30 UTC| M 6.1 |25.6 km (15.9 mi) depth|34 km (21 mi) distance| USGS | Very strong mag. 6.1 earthquake - Gulf of Alaska, 5.7 mi south of Trinity s Island, Kodiak Island County, Alaska, USA, on Wednesday, 15 April 1964 at 15:30 (GMT)
- 05 Apr 1964 01:41 UTC| M 6.0 |24.9 km (15.5 mi) depth|43 km (27 mi) distance| USGS | Strong mag. 6.0 earthquake - Gulf of Alaska, 36 mi southeast of Sitkinak Island, Kodiak Island County, Alaska, USA, on Sunday, 5 April 1964 at 01:41 (GMT)
- 05 Apr 1964 01:22 UTC| M 6.3 |20 km (12.4 mi) depth|57 km (36 mi) distance| USGS | Very strong mag. 6.3 earthquake - Gulf of Alaska, 32 mi southeast of Sitkinak Island, Kodiak Island County, Alaska, USA, on Sunday, 5 April 1964 at 01:22 (GMT)
- 04 Apr 1964 17:59 UTC| M 6.5 |25 km (15.5 mi) depth|31 km (20 mi) distance| USGS | Very strong mag. 6.5 earthquake - Gulf of Alaska, 7.6 mi south of Trinity s Island, Kodiak Island County, Alaska, USA, on Saturday, 4 April 1964 at 17:59 (GMT)
- 04 Apr 1964 17:46 UTC| M 6.8 |18.4 km (11.4 mi) depth|18 km (11 mi) distance| USGS | Major magnitude 6.8 earthquake - Gulf of Alaska, 14 mi southeast of Tugidak Island, Kodiak Island County, Alaska, USA, on Saturday, 4 April 1964 at 17:46 (GMT)
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