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Major mag. 7.4 earthquake - Peru-Ecuador Border Region on Tuesday, 27 July 1971

Major mag. 7.4 earthquake  - Peru-Ecuador Border Region on Tuesday, 27 July 1971
Date & time: Tuesday, 27 July 1971 02:02 UTC
Magnitude: 7.4
Depth: 120.0 km
Epicenter latitude / longitude: 2.839°S / 77.322°W (Peru)
Nearest volcano: Sangay (147 km / 91 mi)
Nearby towns and cities:
53 km (33 mi) NE of Sargento Puño (pop: 100)
64 km (40 mi) NE of Papayacu (pop: 100)
76 km (47 mi) NE of Ampama (pop: 100)
187 km (116 mi) E of Cuenca (pop: 277,000)
196 km (122 mi) SE of Riobamba (pop: 124,500)
1024 km (636 mi) N of Lima (pop: 7,737,000)
Primary data source: USGS
Estimated released energy: 7.9 x 1015 joules (2206 gigawatt hours, equivalent to 1.9 x 106 tons of TNT or 118.7 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
Tue, 27 Jul 02:02 UTCM 7.4 / 120 kmPeru-Ecuador Border RegionUSGS
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 7.4 quake: Peru-Ecuador Border Region, 27 Jul 1971 02:02

More info
Recorded aftershocks, latest first (10 quakes):
  • 09 Jun 1973 13:24 UTC
    | M 4.6 |
    109 km (67.7 mi) depth
    |
    203 km (126 mi) distance
    | USGS | Details
  • 04 Jun 1973 13:14 UTC
    | M 4.3 |
    177 km (110 mi) depth
    |
    178 km (110 mi) distance
    | USGS | Details
  • 30 May 1973 04:38 UTC
    | M 5.7 |
    111 km (69 mi) depth
    |
    148 km (92 mi) distance
    | USGS | Details
  • 10 May 1973 13:46 UTC
    | M 4.9 |
    131 km (81.4 mi) depth
    |
    185 km (115 mi) distance
    | USGS | Details
  • 03 May 1973 15:50 UTC
    | M 4.1 |
    72 km (44.7 mi) depth
    |
    153 km (95 mi) distance
    | USGS | Details
  • 01 Mar 1973 17:49 UTC
    | M 4.9 |
    86 km (53.4 mi) depth
    |
    129 km (80 mi) distance
    | USGS | Details
  • 23 Feb 1973 23:10 UTC
    | M 4.6 |
    33 km (20.5 mi) depth
    |
    131 km (82 mi) distance
    | USGS | Details
  • 23 Feb 1973 06:41 UTC
    | M 5.0 |
    89 km (55.3 mi) depth
    |
    130 km (81 mi) distance
    | USGS | Details
  • 23 Feb 1973 04:26 UTC
    | M 5.7 |
    67 km (41.6 mi) depth
    |
    129 km (80 mi) distance
    | USGS | Details
  • 25 Jan 1973 13:06 UTC
    | M 4.7 |
    186 km (115.6 mi) depth
    |
    159 km (99 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Major mag. 7.4 earthquake - Peru-Ecuador Border Region on Tuesday, 27 July 1971
 

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