Moderate mag. 5.2 earthquake - South Pacific Ocean, Tonga, 266 km southwest of Apia, Tuamasaga, Samoa, on Tuesday, Sep 14, 2021 11:28 pm (GMT +13) -

Moderate mag. 5.2 earthquake - South Pacific Ocean, Tonga, 266 km southwest of Apia, Tuamasaga, Samoa, on Tuesday, Sep 14, 2021 11:28 pm (GMT +13)

Moderate magnitude 5.2 earthquake at 113 km depth

14 Sep 10:48 UTC: First to report: USGS after 20 minutes.
Update Tue, 14 Sep 2021, 11:00
Magnitude 5.2 earthquake strikes near Hihifo, Niuas, Tonga
5.2 quake 14 Sep 11:28 pm (GMT +13)
5.2 quake 14 Sep 11:28 pm (GMT +13)
An intermediate magnitude 5.2 earthquake was reported late at night near Hihifo, Niuas, Tonga.
According to the United States Geological Survey, the quake hit on Tuesday, September 14th, 2021, at 11:28 pm local time at an intermediate depth of 113 km. The strength of the earthquake may have been tempered by its relative great depth below the surface, which makes it feel weaker in absolute terms. Magnitude and other quake parameters can still change in the coming hours as the agency continues to process seismic data.
Our monitoring service identified a second report from Geoscience Australia (GeoAu) which listed the quake at magnitude 5.2 as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.2.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Hihifo (pop. 820) located 101 km from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
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Earthquake data

Date & time: Sep 14, 2021 10:28:17 UTC -
Local time at epicenter: Tuesday, Sep 14, 2021 11:28 pm (GMT +13)
Magnitude: 5.2
Depth: 113.0 km
Epicenter latitude / longitude: 15.0478°S / 173.8958°W (South Pacific Ocean, Tonga)
Antipode: 15.048°N / 6.104°E
Nearest volcano: West Mata (17 km / 11 mi)
Nearby towns and cities:
101 km (63 mi) N of Hihifo (pop: 815) --> See nearby quakes!
217 km (135 mi) SW of Asau (Samoa) (pop: 6,640) --> See nearby quakes!
242 km (150 mi) SW of Mulifanua (Samoa) (pop: 4,510) --> See nearby quakes!
266 km (165 mi) WSW of Apia (Samoa) (pop: 40,400) --> See nearby quakes!
315 km (195 mi) SE of Mata-Utu (Hahake, Wallis & Futuna) (pop: 1,200) --> See nearby quakes!
351 km (218 mi) WSW of Tāfuna (Tualauta, American Samoa) (pop: 11,000) --> See nearby quakes!
354 km (220 mi) WSW of Pago Pago (Ma'Oputasi, American Samoa) (pop: 11,500) --> See nearby quakes!
401 km (249 mi) N of Neiafu (pop: 4,320) --> See nearby quakes!
614 km (382 mi) NW of Alofi (Niue) (pop: 624) --> See nearby quakes!
691 km (430 mi) N of Nuku'alofa (pop: 22,400) --> See nearby quakes!
317 km (197 mi) SE of Wallis Island (pop: 10,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 27.3°C (81 F), humidity: 76%, wind: 8 m/s (15 kts) from ESE
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 4 x 1012 joules (1.11 gigawatt hours, equivalent to 951 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.
Mag.DepthLocationSource
5.2113 km100 Km N of Hihifo, TongaUSGS
5.2126 kmTONGAEMSC
5.2107 kmTonga: Samoa Islands RegionGeoAu
4.7129 kmTonga: Samoa Islands RegionGFZ

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 yet. If you felt it be the first to report it!
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Aftershocks

More info

Recorded aftershocks, latest first (0 quakes)


So far, no aftershocks have been registered.

Earlier earthquakes in the same area since 1900


Map of earlier quakes

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