Very strong mag. 6.0 earthquake - North Pacific Ocean, 46 mi southeast of Herbert Island, Aleutians West, Alaska, USA, on Sunday, 24 March 1957 at 11:06 (GMT)

Very strong mag. 6.0 earthquake - North Pacific Ocean, 46 mi southeast of Herbert Island, Aleutians West, Alaska, USA, on Sunday, 24 March 1957 at 11:06 (GMT)

Tremblement de terre très fort magnitude 6.0 at 20 km depth

Date & time: 24 Mar 1957 11:06:14 UTC
Magnitude: 6
Profondeur: 20.0 km
Epicenter latitude / longitude: 52.166°N / 169.62°W (Océan Pacifique Nord, Alaska, États-Unis)
Volcan le plus près: Herbert (72 km / 45 mi)
Nearby towns and cities:
100 km SSO de Nikolski (pop: 18) --> Voir les séismes à proximité!
281 km SO de Unalaska (pop: 4,490) --> Voir les séismes à proximité!
312 km E de Atka (pop: 64) --> Voir les séismes à proximité!
337 km SO de Akutan (pop: 1,040) --> Voir les séismes à proximité!
508 km SO de False Pass (pop: 40) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 atomic bombs!) Plus d'infos
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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.
MagnitudeProfondeurLieuSource
6.020 kmFox Islands, Aleutian Islands, 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.
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Aftershocks

More info
Recorded aftershocks, latest first (4 quakes):
  • 01 Aug 1957 16:18 UTC
    | M 5.6 |
    0 km (0 mi) depth
    |
    32 km (20 mi) distance
    | USGS | Details
  • 13 Jul 1957 00:59 UTC
    | M 5.7 |
    25.8 km (16 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 29 Apr 1957 04:30 UTC
    | M 5.6 |
    25 km (15.5 mi) depth
    |
    53 km (33 mi) distance
    | USGS | Details
  • 09 Apr 1957 20:24 UTC
    | M 5.7 |
    25 km (15.5 mi) depth
    |
    39 km (24 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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