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Light mag. 4.5 earthquake - South Pacific Ocean, Fiji, 278 km southwest of Nukalofa, Nuku'alofa, Tongatapu, on Saturday, Mar 18, 2023 at 1:14 pm (GMT +13) -

$Light mag. 4.5 earthquake - South Pacific Ocean, Fiji, 278 km southwest of Nukalofa, Nuku\'alofa, Tongatapu, on Saturday, Mar 18, 2023 at 1:14 pm (GMT +13)$ $Light mag. 4.5 earthquake - South Pacific Ocean, Fiji, 278 km southwest of Nukalofa, Nuku\'alofa, Tongatapu, on Saturday, Mar 18, 2023 at 1:14 pm (GMT +13)$

Light magnitude 4.5 earthquake at 329 km depth

18 Mar 00:41 UTC: First to report: USGS after 27 minutes.

Earthquake details

Date & time	Mar 18, 2023 00:14:48 UTC -
Local time at epicenter	Saturday, Mar 18, 2023 at 1:14 pm (GMT +13)
Status	Confirmed
Magnitude	4.5
Depth	328.9 km
Epicenter latitude / longitude	22.3589°S / 177.5499°W (South Pacific Ocean, Fiji)
Antipode	22.359°N / 2.45°E
Shaking intensity	Not felt
Felt
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Unnamed 21.38°S/175.65°W (227 km / 141 mi)
Nearby towns and cities	278 km (173 mi) WSW of Nukalofa (Nuku'alofa, Tonga) (pop: 22,400) \| Show on map \| Quakes nearby 278 km (173 mi) WSW of Nuku‘alofa (Tonga) (pop: 22,400) \| Show on map \| Quakes nearby 291 km (181 mi) WSW of Kolonga (Tonga) (pop: 1,100) \| Show on map \| Quakes nearby 292 km (181 mi) WSW of ‘Ohonua (Ohonua, Tonga) (pop: 1,240) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Light Rain 26.6°C (80 F), humidity: 82%, wind: 11 m/s (21 kts) from ESE
Estimated seismic energy released	3.5 x 10¹¹ joules (98.6 megawatt hours, equivalent to 84.8 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.	Depth	Location	Source
4.5	329 km	Fiji: 276 Km WSW of Haveluloto, Tonga	USGS
4.5	329 km	South of Fiji Islands	RaspberryShake
4.5	10 km	South Of Fiji Islands	IRIS
4.5	329 km	SOUTH OF FIJI ISLANDS	EMSC
4.3	349 km	Tonga: South of Fiji Islands	GFZ

Most recent quakes Top 20 past 24 hrs Quakes in Tonga

Seismograms

Seismic station: Folaha (Nukuhetulu) (TNG1/YC network) | Distance from quake: 276 km / 172 mi | Show on map | Station Info

Seismic station Folaha (Nukuhetulu): vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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.

Earlier earthquakes in the same area

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