Strong mag. 6.6 earthquake - South of Tonga on Friday, 28 September 1984 at 00:03 (GMT)

Strong magnitude 6.6 earthquake at 21 km depth
Magnitude: 6.6
Profondeur: 21.1 km
Epicenter latitude / longitude: 25.849°S / 175.911°W

Volcan le plus près: Monowai (128 km / 80 mi)
Nearby towns and cities:
420 km NNE de Napier Island --> Voir les séismes à proximité!
429 km NNE de Sunday Island --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 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.
Magnitude | Profondeur | Location | Source |
M 6.6 | 21 km | south of Tonga | USGS |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
be the first to report it!
There are no user reports for this quake yet. If you felt it Aftershocks of the 6.6 quake South of Tonga 28 September 1984 00:03 GMT
More info
Recorded aftershocks, latest first (1 quakes):- 14 Dec 1984 06:11 UTC| M 4.8 |33 km (20.5 mi) depth|110 km (69 mi) distance| USGS | Details
Earlier earthquakes in the same area
Strong mag. 6.6 earthquake - South of Tonga on Friday, 28 September 1984 at 00:03 (GMT)Click here to search our database for earlier earthquakes in the same area since 1900!