Strong mag. 6.3 earthquake - Tonga on Wednesday, 3 February 1999 at 01:13 (GMT)
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Strong magnitude 6.3 earthquake at 33 km depth
Depth: 33.0 km
Epicenter latitude / longitude: 20.305°S / 174.365°W (Tonga)
Nearest volcano: Feinga Seamount (85 km / 53 mi)
Nearby towns and cities:
55 km (34 mi) S of Pangai (pop: 1,740) --> See nearby quakes!
118 km (73 mi) NE of Kolonga (pop: 1,100) --> See nearby quakes!
127 km (79 mi) NE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
127 km (79 mi) NE of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
130 km (80 mi) NNE of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
188 km (117 mi) SSW of Neiafu (pop: 4,320) --> 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
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 6.3||33 km||Tonga||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks of the 6.3 quake Tonga 3 February 1999 01:13 GMT
More infoRecorded aftershocks, latest first (2 quakes):
- 27 Jun 1999 14:01 UTC| M 5.2 |33 km (20.5 mi) depth|74 km (46 mi) distance| USGS | Details
- 23 Feb 1999 18:56 UTC| M 5.5 |36.1 km (22.4 mi) depth|63 km (39 mi) distance| USGS | Details