Very strong mag. 6.1 earthquake - Gulf of Alaska, 28 mi southeast of Old Harbor, Kodiak Island County, Alaska, USA, on Saturday, 28 March 1964 at 10:35 (GMT)
Quake Data | Interactive map | User Reports | Aftershocks | Earlier quakes in same area | Quakes in the US| Alaska | Alaska
Very strong magnitude 6.1 earthquake at 22 km depth
Date & time: 28 Mar 1964 10:35:39 UTC
Magnitude: 6.1
Depth: 22.4 km
Epicenter latitude / longitude: 57.031°N / 152.616°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Steller (188 km / 117 mi)
Nearby towns and cities:
46 km (28 mi) ESE of Old Harbor (pop: 221) --> See nearby quakes!
73 km (45 mi) S of Womens Bay (pop: 719) --> See nearby quakes!
82 km (51 mi) S of Kodiak Station (pop: 1,300) --> See nearby quakes!
85 km (53 mi) S of Kodiak (pop: 6,250) --> See nearby quakes!
297 km (185 mi) SSW of Homer (pop: 5,520) --> See nearby quakes!
384 km (239 mi) SSW of Kalifornsky (pop: 7,850) --> See nearby quakes!
395 km (245 mi) SSW of Soldotna (pop: 4,540) --> See nearby quakes!
400 km (248 mi) S of Kenai (pop: 7,660) --> See nearby quakes!
404 km (251 mi) SSW of Sterling (pop: 5,620) --> See nearby quakes!
414 km (257 mi) S of Nikiski (pop: 4,490) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 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 6.1 | 22 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.
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 (7 quakes):- 12 May 1964 18:16 UTC| M 6.3 |20 km (12.4 mi) depth|67 km (42 mi) distance| USGS | Very strong mag. 6.3 earthquake - Gulf of Alaska, 53 mi southeast of Twoheaded Island, Kodiak Island County, Alaska, USA, on Tuesday, 12 May 1964 at 18:16 (GMT)
- 06 May 1964 15:26 UTC| M 5.9 |20 km (12.4 mi) depth|55 km (34 mi) distance| USGS | Details
- 23 Apr 1964 14:56 UTC| M 5.6 |25 km (15.5 mi) depth|50 km (31 mi) distance| USGS | Details
- 12 Apr 1964 01:24 UTC| M 6.3 |15 km (9.3 mi) depth|67 km (42 mi) distance| USGS | Very strong mag. 6.3 earthquake - Gulf of Alaska, 93 mi south of Kodiak, Alaska, USA, on Sunday, 12 April 1964 at 01:24 (GMT)
- 04 Apr 1964 09:10 UTC| M 5.9 |20.6 km (12.8 mi) depth|25 km (16 mi) distance| USGS | Details
- 30 Mar 1964 16:09 UTC| M 6.0 |15.5 km (9.6 mi) depth|61 km (38 mi) distance| USGS | Very strong mag. 6.0 earthquake - Gulf of Alaska, 55 mi southeast of Sitkalidak Island, Kodiak Island County, Alaska, USA, on Monday, 30 March 1964 at 16:09 (GMT)
- 30 Mar 1964 02:18 UTC| M 6.7 |18.6 km (11.6 mi) depth|61 km (38 mi) distance| USGS | Very strong mag. 6.7 earthquake - Gulf of Alaska, 41 mi southeast of Twoheaded Island, Kodiak Island County, Alaska, USA, on Monday, 30 March 1964 at 02:18 (GMT)
Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Depth|Age|Distance| Details
- 09 Oct 1900 12:25| 7.9 |unknown|120 years ago|53km / 33mi| Gulf of Alaska, 10.2 mi SW of Old Harbor, Kodiak Island County, Alaska, USA
- 07 Nov 1912 07:40| 7.3 |90km / 56mi|108 years ago|153km / 95mi| Gulf of Alaska, 57 mi W of Kodiak Island, Alaska, USA
- 23 Dec 1906 17:22| 7.3 |unknown|114 years ago|80km / 50mi| 12 mi SE of Akhiok, Kodiak Island County, Alaska, USA
- 10 Apr 1957 11:30| 7.0 |15km / 9.3mi|64 years ago|154km / 95mi| Gulf of Alaska, 145 mi SW of Kodiak, Alaska, USA
- 05 Dec 1912 12:27| 6.9 |90km / 56mi|108 years ago|98km / 61mi| 2.9 mi S of Larsen Bay, Kodiak Island County, Alaska, USA
- 29 Nov 1952 23:46| 6.8 |20km / 12.4mi|68 years ago|120km / 74mi| Gulf of Alaska, 17 mi S of Sitkinak Island, Kodiak Island County, Alaska, USA
- 28 Mar 1964 09:01| 6.5 |15km / 9.3mi|57 years ago|78km / 48mi| Gulf of Alaska, 97 mi S of Kodiak, Alaska, USA
- 15 Jun 1953 17:47| 6.5 |20km / 12.4mi|68 years ago|124km / 77mi| Gulf of Alaska, 18 mi S of Sitkinak Island, Kodiak Island County, Alaska, USA
- 01 Apr 1941 10:41| 6.5 |15km / 9.3mi|80 years ago|125km / 78mi| Gulf of Alaska, 43 mi SE of Sitkinak Island, Kodiak Island County, Alaska, USA
- 14 May 1934 22:12| 6.5 |60km / 37mi|87 years ago|83km / 52mi| Gulf of Alaska, 1.8 mi E of Refuge Island, Kodiak Island County, Alaska, USA
Hint: Click on Date/Time to show latest first
Show all
