Moderate mag. 5.5 earthquake - South Pacific Ocean, 104 km east of Nuku\'alofa, Tongatapu, on Sunday, 22 January 1984 at 13:51 (GMT)
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Moderate magnitude 5.5 earthquake at 51 km depth
Date & time: 22 Jan 1984 13:51:51 UTC
Depth: 50.9 km
Epicenter latitude / longitude: 21.369°S / 174.227°W (South Pacific Ocean, Tonga)
Nearest volcano: Unnamed 21.38°S/175.65°W (147 km / 91 mi)
Nearby towns and cities:
75 km (47 mi) E of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
91 km (56 mi) ESE of Kolonga (pop: 1,100) --> See nearby quakes!
104 km (65 mi) ESE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
104 km (65 mi) ESE of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
173 km (108 mi) S of Pangai (pop: 1,740) --> See nearby quakes!
303 km (189 mi) S of Neiafu (pop: 4,320) --> See nearby quakes!
518 km (322 mi) WSW of Alofi (Niue) (pop: 624) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.1 x 1013 joules (3.12 gigawatt hours, equivalent to 2682 tons of TNT or 0.2 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 5.5||51 km||Tonga||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.