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Major mag. 7.8 earthquake - Valparaiso, Chile on Friday, 9 July 1971

Major mag. 7.8 earthquake  - Valparaiso, Chile on Friday, 9 July 1971
Date & time: Friday, 9 July 1971 03:03 UTC
Magnitude: 7.8
Depth: 60.3 km
Epicenter latitude / longitude: 32.601°S / 71.076°W (Chile)
Nearest volcano: Tupungato (148 km / 92 mi)
Nearby towns and cities:
22 km (14 mi) SE of La Ligua (pop: 24,900)
24 km (15 mi) NE of Hacienda La Calera (pop: 49,100)
29 km (18 mi) NW of Llaillay (pop: 16,600)
65 km (40 mi) NE of Viña del Mar (pop: 294,600)
103 km (64 mi) NW of Santiago (pop: 4,837,300)
122 km (76 mi) NW of Puente Alto (pop: 510,400)
Primary data source: USGS
Estimated released energy: 3.2 x 1016 joules (8784 gigawatt hours, equivalent to 7.6 x 106 tons of TNT or 472.4 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
Fri, 9 Jul 03:03 UTCM 7.8 / 60.3 kmValparaiso, 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!

Aftershocks of the 7.8 quake: Valparaiso, Chile, 9 Jul 1971 03:03

More info
Recorded aftershocks, latest first (40 quakes):
  • 28 Jun 1973 16:42 UTC
    | M 4.1 |
    62 km (38.5 mi) depth
    |
    140 km (87 mi) distance
    | USGS | Details
  • 24 Jun 1973 16:08 UTC
    | M 3.9 |
    46 km (28.6 mi) depth
    |
    63 km (39 mi) distance
    | USGS | Details
  • 09 Jun 1973 05:12 UTC
    | M 4.1 |
    52 km (32.3 mi) depth
    |
    283 km (176 mi) distance
    | USGS | Details
  • 30 May 1973 17:00 UTC
    | M 4.1 |
    122 km (75.8 mi) depth
    |
    201 km (125 mi) distance
    | USGS | Details
  • 28 May 1973 01:53 UTC
    | M 4.6 |
    5 km (3.1 mi) depth
    |
    226 km (140 mi) distance
    | USGS | Details
  • 25 May 1973 09:45 UTC
    | M 4.3 |
    25 km (15.5 mi) depth
    |
    198 km (123 mi) distance
    | USGS | Details
  • 15 May 1973 07:34 UTC
    | M 4.2 |
    125 km (77.7 mi) depth
    |
    191 km (119 mi) distance
    | USGS | Details
  • 13 May 1973 17:34 UTC
    | M 4.6 |
    77 km (47.8 mi) depth
    |
    48 km (30 mi) distance
    | USGS | Details
  • 08 May 1973 20:28 UTC
    | M 4.6 |
    111 km (69 mi) depth
    |
    255 km (159 mi) distance
    | USGS | Details
  • 06 May 1973 21:12 UTC
    | M 4.6 |
    59 km (36.7 mi) depth
    |
    196 km (122 mi) distance
    | USGS | Details
  • 03 May 1973 16:00 UTC
    | M 4.7 |
    33 km (20.5 mi) depth
    |
    289 km (180 mi) distance
    | USGS | Details
  • 26 Apr 1973 06:54 UTC
    | M 3.9 |
    70 km (43.5 mi) depth
    |
    223 km (139 mi) distance
    | USGS | Details
  • 23 Apr 1973 15:25 UTC
    | M 5.2 |
    85 km (52.8 mi) depth
    |
    157 km (98 mi) distance
    | USGS | Details
  • 22 Apr 1973 14:54 UTC
    | M 4.5 |
    50 km (31.1 mi) depth
    |
    82 km (51 mi) distance
    | USGS | Details
  • 04 Apr 1973 04:14 UTC
    | M 4.1 |
    62 km (38.5 mi) depth
    |
    67 km (42 mi) distance
    | USGS | Details
  • 03 Apr 1973 22:07 UTC
    | M 4.3 |
    196 km (121.8 mi) depth
    |
    225 km (140 mi) distance
    | USGS | Details
  • Show all

Earlier earthquakes in the same area

Major mag. 7.8 earthquake - Valparaiso, Chile on Friday, 9 July 1971
 

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