Moderate mag. 4.9 earthquake - South Pacific Ocean, 192 km northeast of Nuku\'alofa, Tongatapu, on Friday, 3 February 1984 at 23:34 (GMT)

Moderate mag. 4.9 earthquake - South Pacific Ocean, 192 km northeast of Nuku\'alofa, Tongatapu, on Friday, 3 February 1984 at 23:34 (GMT)

Moderate magnitude 4.9 earthquake at 33 km depth

Date & time: 3 Feb 1984 23:34:05 UTC
Magnitude: 4.9
Depth: 33.0 km
Epicenter latitude / longitude: 20.228°S / 173.637°W (South Pacific Ocean, Tonga)
Nearest volcano: Kao (158 km / 98 mi)
Nearby towns and cities:
88 km (55 mi) ESE of Pangai (pop: 1,740) --> See nearby quakes!
179 km (111 mi) SSE of Neiafu (pop: 4,320) --> See nearby quakes!
180 km (112 mi) NE of Kolonga (pop: 1,100) --> See nearby quakes!
184 km (114 mi) NE of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
192 km (119 mi) ENE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
192 km (119 mi) ENE of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
411 km (255 mi) WSW of Alofi (Niue) (pop: 624) --> See nearby quakes!
415 km (258 mi) WSW of Hakupu (Niue) (pop: 221) --> See nearby quakes!
423 km (263 mi) WSW of Mutalau (Niue) (pop: 133) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 tons of TNT) 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.
MagnitudeDepthLocationSource
M 4.933 kmTongaUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

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