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Moderate mag. 4.7 earthquake - South Pacific Ocean, Tonga, on Friday, Jan 21, 2022 at 12:33 pm (GMT +13) -

This quake was likely an aftershock of the 5.8 quake South Pacific Ocean, Tonga, Jan 15, 2022 5:14 pm (GMT +13), which had occurred 6 days earlier.
Moderate mag. 4.7 earthquake - South Pacific Ocean, Tonga, on Friday, Jan 21, 2022 at 12:33 pm (GMT +13) Moderate mag. 4.7 earthquake - South Pacific Ocean, Tonga, on Friday, Jan 21, 2022 at 12:33 pm (GMT +13)

Moderate magnitude 4.7 earthquake at 10 km depth

21 Jan 00:37 UTC: First to report: EMSC after 1 hour and 3 minutes.
21 Jan 00:38: Now using data updates from USGS
Date & time: Jan 20, 2022 23:33:52 UTC -
Local time at epicenter: Friday, Jan 21, 2022 at 12:33 pm (GMT +13)
Magnitude: 4.7
Depth: 10.0 km
Epicenter latitude / longitude: 20.4834°S / 175.4169°W (South Pacific Ocean, Tonga)
Antipode: 20.483°N / 4.583°E
Nearest volcano: Hunga Tonga-Hunga Ha'apai (10 km / 6 mi)
Nearby towns and cities:
76 km (47 mi) NNW of Nukalofa (Nuku'alofa) (pop: 22,400) --> See nearby quakes!
76 km (47 mi) NNW of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
81 km (50 mi) NNW of Kolonga (pop: 1,100) --> See nearby quakes!
106 km (66 mi) NNW of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
134 km (83 mi) SW of Pangai (pop: 1,740) --> See nearby quakes!
253 km (157 mi) SW of Neiafu (pop: 4,320) --> See nearby quakes!
81 km (50 mi) NNW of Amsterdam Island (pop: 75,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) | about seismic energy
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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.
Mag.DepthLocationSource
4.710 km76 Km NNW of Nuku‘alofa, TongaUSGS
4.710 kmTONGAEMSC
4.710 kmTonga IslandsRaspberryShake

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.
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