Strong mag. 6.3 earthquake - Antofagasta, Chile, on Monday, 17 January 1977 at 21:27 (GMT)

Strong mag. 6.3 earthquake - Antofagasta, Chile, on Monday, 17 January 1977 at 21:27 (GMT)

Strong magnitude 6.3 earthquake at 33 km depth

Date & time: 17 Jan 1977 21:27:12 UTC
Magnitude: 6.3
Depth: 33.0 km
Epicenter latitude / longitude: 24.848°S / 68.674°W (Chile)
Nearest volcano: Llullaillaco (20 km / 12 mi)
Nearby towns and cities:
193 km (120 mi) ENE of Taltal (Antofagasta) (pop: 10,000) --> See nearby quakes!
218 km (136 mi) NE of Diego de Almagro (pop: 18,100) --> See nearby quakes!
219 km (136 mi) SE of Antofagasta (pop: 309,800) --> See nearby quakes!
267 km (166 mi) S of Calama (pop: 143,100) --> See nearby quakes!
325 km (202 mi) NNE of Copiapo (pop: 129,300) --> See nearby quakes!
329 km (205 mi) W of Salta (Argentina) (pop: 512,700) --> See nearby quakes!
344 km (214 mi) SSE of Tocopilla (pop: 24,500) --> See nearby quakes!
349 km (217 mi) WSW of San Salvador de Jujuy (Argentina) (pop: 305,900) --> See nearby quakes!
464 km (288 mi) NNE of Vallenar (pop: 44,900) --> See nearby quakes!
976 km (607 mi) N of Santiago de Chile (pop: 4,837,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 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 6.333 kmAntofagasta, 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.
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 6.3 quake Antofagasta, Chile, 17 January 1977 21:27 GMT

More info
Recorded aftershocks, latest first (2 quakes):
  • 21 Jun 1977 23:28 UTC
    | M 4.7 |
    101 km (62.8 mi) depth
    |
    58 km (36 mi) distance
    | USGS | Details
  • 22 May 1977 19:55 UTC
    | M 4.6 |
    134 km (83.3 mi) depth
    |
    60 km (37 mi) distance
    | USGS | Details

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Earlier earthquakes in the same area

Strong mag. 6.3 earthquake - Antofagasta, Chile, on Monday, 17 January 1977 at 21:27 (GMT)
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