Strong mag. 6.3 earthquake - Vanuatu on Thursday, 15 August 1991 at 13:35 (GMT)

Strong mag. 6.3 earthquake  - Vanuatu on Thursday, 15 August 1991 at 13:35 (GMT)

Strong magnitude 6.3 earthquake at 171 km depth

Date & time: 15 Aug 1991 13:35:59 UTC
Magnitude: 6.3
Depth: 170.8 km
Epicenter latitude / longitude: 16.064°S / 168.01°E (Vanuatu)
Nearest volcano: Ambrym (24 km / 15 mi)
Nearby towns and cities:
64 km (40 mi) E of Lakatoro (pop: 705) --> See nearby quakes!
66 km (41 mi) E of Norsup (pop: 3,000) --> See nearby quakes!
109 km (68 mi) ESE of Luganville (pop: 13,400) --> See nearby quakes!
152 km (94 mi) SE of Port-Olry (pop: 1,950) --> See nearby quakes!
189 km (117 mi) N of Port Vila (pop: 35,900) --> See nearby quakes!
248 km (154 mi) SSE of Sola (pop: 1,170) --> See nearby quakes!
410 km (254 mi) NNW of Isangel (pop: 1,440) --> 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.
M 6.3171 kmVanuatuUSGS
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 Vanuatu 15 August 1991 13:35 GMT

More info
Recorded aftershocks, latest first (4 quakes):
  • 16 Jan 1992 19:56 UTC
    | M 4.7 |
    121.2 km (75.3 mi) depth
    77 km (48 mi) distance
    | USGS | Details
  • 29 Oct 1991 23:13 UTC
    | M 5.6 |
    177 km (110 mi) depth
    14 km (8 mi) distance
    | USGS | Details
  • 06 Oct 1991 07:51 UTC
    | M 5.4 |
    22.2 km (13.8 mi) depth
    79 km (49 mi) distance
    | USGS | Details
  • 03 Oct 1991 20:24 UTC
    | M 5.5 |
    10 km (6.2 mi) depth
    85 km (53 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

Strong mag. 6.3 earthquake - Vanuatu on Thursday, 15 August 1991 at 13:35 (GMT)
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