Very strong mag. 6.5 earthquake - South Pacific Ocean, 27 km west of Valparaiso, Chile, on Friday, 5 October 1973 at 05:45 (GMT)

Very strong mag. 6.5 earthquake - South Pacific Ocean, 27 km west of Valparaiso, Chile, on Friday, 5 October 1973 at 05:45 (GMT)

Very strong magnitude 6.5 earthquake at 14 km depth

Date & time: 5 Oct 1973 05:45:27 UTC
Magnitude: 6.5
Depth: 14.0 km
Epicenter latitude / longitude: 32.987°S / 71.916°W (South Pacific Ocean, Chile)
Nearest volcano: Tupungatito (202 km / 126 mi)
Nearby towns and cities:
27 km (17 mi) W of Valparaiso (pop: 282,400) --> See nearby quakes!
34 km (21 mi) W of Viña del Mar (pop: 294,600) --> See nearby quakes!
45 km (28 mi) W of Quilpué (pop: 130,300) --> See nearby quakes!
51 km (32 mi) W of Villa Alemana (pop: 97,300) --> See nearby quakes!
61 km (38 mi) W of Limache (Marga Marga) (pop: 35,900) --> See nearby quakes!
63 km (39 mi) W of Quillota (pop: 67,800) --> See nearby quakes!
69 km (43 mi) WSW of Hacienda La Calera (pop: 49,100) --> See nearby quakes!
73 km (46 mi) NNW of San Antonio (pop: 85,700) --> See nearby quakes!
129 km (80 mi) WNW of Santiago de Chile (pop: 4,837,300) --> See nearby quakes!
143 km (89 mi) WNW of Puente Alto (pop: 510,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.5 x 1014 joules (98.6 gigawatt hours, equivalent to 84802 tons of TNT or 5.3 atomic bombs!) More info
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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.
MagnitudeDepthLocationSource
M 6.514 kmoffshore Valparaiso, ChileUSGS
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 (40 quakes):
  • 23 Mar 1974 19:28 UTC
    | M 4.4 |
    51 km (31.7 mi) depth
    |
    46 km (29 mi) distance
    | USGS | Details
  • 01 Mar 1974 04:36 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    25 km (15 mi) distance
    | USGS | Details
  • 27 Feb 1974 00:11 UTC
    | M 4.7 |
    46 km (28.6 mi) depth
    |
    44 km (28 mi) distance
    | USGS | Details
  • 13 Feb 1974 07:30 UTC
    | M 4.3 |
    47 km (29.2 mi) depth
    |
    48 km (30 mi) distance
    | USGS | Details
  • 14 Jan 1974 13:15 UTC
    | M 4.9 |
    26 km (16.2 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 07 Jan 1974 19:37 UTC
    | M 5.1 |
    24 km (14.9 mi) depth
    |
    14 km (8 mi) distance
    | USGS | Details
  • 25 Nov 1973 11:11 UTC
    | M 3.9 |
    70 km (43.5 mi) depth
    |
    102 km (63 mi) distance
    | USGS | Details
  • 17 Nov 1973 19:28 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 17 Nov 1973 19:19 UTC
    | M 3.9 |
    24 km (14.9 mi) depth
    |
    28 km (17 mi) distance
    | USGS | Details
  • 08 Nov 1973 12:17 UTC
    | M 4.8 |
    33 km (20.5 mi) depth
    |
    49 km (30 mi) distance
    | USGS | Details
  • 31 Oct 1973 06:58 UTC
    | M 4.5 |
    24 km (14.9 mi) depth
    |
    20 km (12 mi) distance
    | USGS | Details
  • 27 Oct 1973 02:02 UTC
    | M 4.1 |
    27 km (16.8 mi) depth
    |
    30 km (18 mi) distance
    | USGS | Details
  • 20 Oct 1973 12:31 UTC
    | M 4.9 |
    38 km (23.6 mi) depth
    |
    27 km (17 mi) distance
    | USGS | Details
  • 12 Oct 1973 04:09 UTC
    | M 5.1 |
    29 km (18 mi) depth
    |
    17 km (10 mi) distance
    | USGS | Details
  • 10 Oct 1973 21:09 UTC
    | M 4.5 |
    46 km (28.6 mi) depth
    |
    30 km (19 mi) distance
    | USGS | Details
  • 08 Oct 1973 04:07 UTC
    | M 4.0 |
    33 km (20.5 mi) depth
    |
    30 km (19 mi) distance
    | USGS | Details
    • Show all

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Earlier earthquakes in the same area since 1900


Map of earlier quakes

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