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Strong mag. 6.5 earthquake - Kenai Peninsula, Alaska (USA) on Saturday, 28 March 1964

Strong mag. 6.5 earthquake  - Kenai Peninsula, Alaska (USA) on Saturday, 28 March 1964
Date & time: Saturday, 28 March 1964 20:29 UTC
Magnitude: 6.5
Depth: 15.0 km
Epicenter latitude / longitude: 59.684°N / 148.979°W (Alaska, United States)
Nearest volcano: Redoubt (227 km / 141 mi)
Nearby towns and cities:
50 km (31 mi) SE of Lowell Point (pop: 100)
53 km (33 mi) SE of Seward (pop: 2,800)
58 km (36 mi) SE of Bear Creek (pop: 2,000)
152 km (95 mi) SE of Kalifornsky (pop: 7,900)
178 km (111 mi) SE of Anchorage (pop: 298,700)
185 km (115 mi) S of Eagle River (pop: 24,800)
Primary data source: USGS
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
Sat, 28 Mar 20:29 UTCM 6.5 / 15 kmKenai Peninsula, Alaska (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from 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 of the 6.5 quake: Kenai Peninsula, Alaska (USA), 28 Mar 1964 20:29

More info
Recorded aftershocks, latest first (5 quakes):
  • 23 Jul 1964 19:08 UTC
    | M 5.6 |
    22.5 km (14 mi) depth
    31 km (19 mi) distance
    | USGS | Details
  • 02 Apr 1964 11:41 UTC
    | M 5.7 |
    21.5 km (13.4 mi) depth
    88 km (55 mi) distance
    | USGS | Details
  • 30 Mar 1964 02:03 UTC
    | M 5.1 |
    26 km (16.2 mi) depth
    88 km (54 mi) distance
    | USGS | Details
  • 29 Mar 1964 10:08 UTC
    | M 5.7 |
    15 km (9.3 mi) depth
    26 km (16 mi) distance
    | USGS | Details
  • 29 Mar 1964 01:09 UTC
    | M 5.9 |
    20.9 km (13 mi) depth
    17 km (11 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.5 earthquake - Kenai Peninsula, Alaska (USA) on Saturday, 28 March 1964

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