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Moderate mag. 4.7 earthquake - Coral Sea, 272 km northeast of Noumea, Nouméa, South Province, New Caledonia, on Saturday, Mar 18, 2023 at 12:14 pm (GMT +11) -

Moderate magnitude 4.7 earthquake at 10 km depth

18 Mar 01:47 UTC: First to report: USGS after 33 minutes.

Earthquake details

Date & time	Mar 18, 2023 01:14:03 UTC -
Local time at epicenter	Saturday, Mar 18, 2023 at 12:14 pm (GMT +11)
Status	Confirmed
Magnitude	4.7
Depth	10.0 km
Epicenter latitude / longitude	21.1669°S / 168.7912°E (Coral Sea, New Caledonia)
Antipode	21.167°N / 11.209°W
Shaking intensity	Moderate shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Eastern Gemini Seamount (156 km / 97 mi)
Nearby towns and cities	103 km (64 mi) ENE of Tadine (Maré) (pop: 7,490) \| Show on map \| Quakes nearby 161 km (100 mi) E of Wé (Lifou) (pop: 10,400) \| Show on map \| Quakes nearby 241 km (150 mi) ESE of Fayaoué (pop: 4,410) \| Show on map \| Quakes nearby 260 km (162 mi) ENE of Mont-Dore (pop: 24,700) \| Show on map \| Quakes nearby 265 km (165 mi) ENE of Dumbéa (pop: 19,300) \| Show on map \| Quakes nearby 272 km (169 mi) ENE of Noumea (pop: 93,100) \| Show on map \| Quakes nearby 274 km (170 mi) ENE of Paita (pop: 12,600) \| Show on map \| Quakes nearby 385 km (239 mi) S of Port Vila (Vanuatu) (pop: 35,900) \| Show on map \| Quakes nearby 151 km (94 mi) SW of Aneityum Island (pop: 915) \| Show on map \| Quakes nearby 192 km (120 mi) SSW of Tanna Island (pop: 28,800) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Broken Clouds 27.1°C (81 F), humidity: 81%, wind: 5 m/s (10 kts) from N
Estimated seismic energy released	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.	Depth	Location	Source
4.7	10 km	103 Km ENE of Tadine, New Caledonia	USGS
4.7	10 km	New Caledonia: Loyalty Islands	IRIS
4.7	10 km	New Caledonia: Loyalty Islands	RaspberryShake
4.7	10 km	New Caledonia: LOYALTY ISLANDS	EMSC
4.7	10 km	New Caledonia: Loyalty Islands	GFZ

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Seismograms

Seismic station: Norfolk Island (NFK/AU network) | Distance from quake: 880 km / 547 mi | Show on map | Station Info

Seismic station Norfolk Island: 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: 0.2-5.0 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.

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