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Major mag. 7.1 earthquake - Vanuatu on Saturday, 20 August 2011

Major mag. 7.1 earthquake  - Vanuatu on Saturday, 20 August 2011
Date & time: Saturday, 20 August 2011 18:19 UTC
Magnitude: 7.1
Depth: 28.0 km
Epicenter latitude / longitude: 18.311°S / 168.218°E (Vanuatu)
Nearest volcano: Fatmalapa (84 km / 52 mi)
Nearby towns and cities:
65 km (40 mi) S of Port-Vila (pop: 35,900)
177 km (110 mi) NW of Isangel (pop: 1,400)
Primary data source: USGS
Estimated released energy: 2.8 x 1015 joules (783 gigawatt hours, equivalent to 6.7 x 105 tons of TNT or 42.1 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
Sat, 20 Aug 18:19 UTCM 7.1 / 28 km VanuatuUSGS
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) scale.

Aftershocks of the 7.1 quake: Vanuatu, 20 Aug 2011 18h19

Show info about this
List of recorded aftershocks, latest first (376 quakes):
  • 24 Jul 2013 00:30 UTC
    | M 4.9 |
    35.3 km (21.9 mi) depth
    |
    126 km (79 mi) distance
    | USGS | Details
  • 20 Jul 2013 06:10 UTC
    | M 4.5 |
    53.8 km (33.4 mi) depth
    |
    143 km (89 mi) distance
    | USGS | Details
  • 19 Jul 2013 14:54 UTC
    | M 4.9 |
    17.4 km (10.8 mi) depth
    |
    118 km (73 mi) distance
    | USGS | Details
  • 18 Jul 2013 09:59 UTC
    | M 5.1 |
    19.1 km (11.9 mi) depth
    |
    103 km (64 mi) distance
    | USGS | Details
  • 16 Jun 2013 06:26 UTC
    | M 4.9 |
    25.9 km (16.1 mi) depth
    |
    125 km (78 mi) distance
    | USGS | Details
  • 11 Jun 2013 19:12 UTC
    | M 5.4 |
    75.2 km (46.7 mi) depth
    |
    37 km (23 mi) distance
    | USGS | Details
  • 30 May 2013 08:55 UTC
    | M 4.4 |
    258.4 km (160.6 mi) depth
    |
    146 km (91 mi) distance
    | USGS | Details
  • 29 May 2013 11:25 UTC
    | M 4.7 |
    10.1 km (6.3 mi) depth
    |
    67 km (41 mi) distance
    | USGS | Details
  • 10 May 2013 11:18 UTC
    | M 4.6 |
    145.7 km (90.5 mi) depth
    |
    57 km (35 mi) distance
    | USGS | Details
  • 01 May 2013 09:51 UTC
    | M 5.1 |
    8.5 km (5.3 mi) depth
    |
    89 km (55 mi) distance
    | USGS | Details
  • 01 May 2013 00:48 UTC
    | M 4.6 |
    51.6 km (32.1 mi) depth
    |
    78 km (49 mi) distance
    | USGS | Details
  • 30 Apr 2013 21:04 UTC
    | M 4.5 |
    15 km (9.3 mi) depth
    |
    74 km (46 mi) distance
    | EMSC | Details
  • 30 Apr 2013 20:17 UTC
    | M 4.9 |
    7.8 km (4.8 mi) depth
    |
    82 km (51 mi) distance
    | USGS | Details
  • 24 Apr 2013 14:08 UTC
    | M 5.3 |
    231.1 km (143.6 mi) depth
    |
    114 km (71 mi) distance
    | USGS | Details
  • 10 Apr 2013 13:04 UTC
    | M 4.6 |
    10 km (6.2 mi) depth
    |
    77 km (48 mi) distance
    | USGS | Details
  • 19 Mar 2013 08:01 UTC
    | M 4.9 |
    30.6 km (19 mi) depth
    |
    103 km (64 mi) distance
    | USGS | Details
  • Show all

Map of aftershocks

Significant earthquakes in the same area since 1900

Major mag. 7.1 earthquake - Vanuatu on Saturday, 20 August 2011
 

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