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Major mag. 7.1 earthquake - Southern Alaska (USA) on Wednesday, 28 February 1979

Major mag. 7.1 earthquake - Southern Alaska (USA) on Wednesday, 28 February 1979
Date & time: Wednesday, 28 February 1979 21:27 UTC
Magnitude: 7.1
Depth: 15.0 km
Epicenter latitude / longitude: 60.642°N / 141.593°W (Alaska, United States)
Nearest volcano: Churchill (83 km / 52 mi)
Nearby towns and cities:
160 km (99 mi) NW of Yakutat (pop: 700)
181 km (113 mi) SE of Chitina (pop: 100)
Primary data source: USGS
Estimated released energy: 2.8 x 1015 joules (783 gigawatt hours, equivalent to 6.7 x 105 tons of TNT or 42.1 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
Wed, 28 Feb 21:27 UTCM 7.1 / 15 kmSouthern 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!
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Aftershocks of the 7.1 quake: Southern Alaska (USA), 28 Feb 1979 21:27

More info
Recorded aftershocks, latest first (503 quakes):
  • 07 Feb 1981 03:59 UTC
    | M 3.7 |
    33 km (20.5 mi) depth
    |
    80 km (50 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 30 Oct 1980 17:11 UTC
    | M 4.3 |
    15 km (9.3 mi) depth
    |
    71 km (44 mi) distance
    | USGS | Details
  • 13 Oct 1980 07:38 UTC
    | M 3.5 |
    15 km (9.3 mi) depth
    |
    73 km (45 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 06 Oct 1980 23:33 UTC
    | M 3.9 |
    15 km (9.3 mi) depth
    |
    76 km (47 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 13 Sep 1980 21:19 UTC
    | M 3.3 |
    33 km (20.5 mi) depth
    |
    152 km (94 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 28 Jul 1980 02:29 UTC
    | M 3.1 |
    28 km (17.4 mi) depth
    |
    74 km (46 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
  • 25 Jul 1980 03:35 UTC
    | M 3.7 |
    15 km (9.3 mi) depth
    |
    82 km (51 mi) distance
    | USGS | Details
  • 01 Jan 1970 00:00 UTC
    | M |
    0 km (0 mi) depth
    |
    12523 km (7782 mi) distance
    | | Details
    • Show all

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Earlier earthquakes in the same area

Major mag. 7.1 earthquake - Southern Alaska (USA) on Wednesday, 28 February 1979
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