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Light mag. 4.6 earthquake - South Pacific Ocean, New Zealand, on Tuesday, Aug 23, 2022 at 11:08 pm (GMT +12) -

Light magnitude 4.6 earthquake at 164 km depth

23 Aug 11:11 UTC: First to report: GEONET (NZ) after 3 minutes.
23 Aug 11:12: Magnitude recalculated from 3.8 to 4.4.
23 Aug 11:13: Magnitude recalculated from 4.4 to 4.6. Hypocenter depth recalculated from 197.4 to 165.8 km (from 123 to 103 mi). Epicenter location corrected by 37 km (23 mi) towards NE.
23 Aug 11:16: Hypocenter depth recalculated from 165.8 to 164.1 km (from 103 to 102 mi). Epicenter location corrected by 4.3 km (2.7 mi) towards W.

Earthquake details

Date & time	Aug 23, 2022 11:08:32 UTC -
Local time at epicenter	Tuesday, Aug 23, 2022 at 11:08 pm (GMT +12)
Status	Confirmed
Magnitude	4.6
Depth	164.1 km
Epicenter latitude / longitude	35.04699°S / 179.34306°E (South Pacific Ocean, New Zealand)
Antipode	35.047°N / 0.657°W
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearest volcano	Brothers (31 km / 19 mi)
Nearby towns and cities	299 km (186 mi) NNE of Hicks Bay (pop: 1,390) \| Show on map \| Quakes nearby 386 km (240 mi) NNE of Whakatane (pop: 18,600) \| Show on map \| Quakes nearby 409 km (254 mi) NE of Tauranga (pop: 110,300) \| Show on map \| Quakes nearby 441 km (274 mi) NE of Rotorua (pop: 65,900) \| Show on map \| Quakes nearby 455 km (283 mi) ENE of Papakura (pop: 28,000) \| Show on map \| Quakes nearby 462 km (287 mi) ENE of Pukekohe East (pop: 21,400) \| Show on map \| Quakes nearby 474 km (294 mi) NE of Hamilton (pop: 152,600) \| Show on map \| Quakes nearby 800 km (497 mi) NNE of Wellington (pop: 381,900) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 15.5°C (60 F), humidity: 68%, wind: 6 m/s (12 kts) from WSW
Estimated seismic energy released	5 x 10¹¹ joules (139 megawatt hours, equivalent to 120 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
4.6	164 km	New Zealand	GEONET (NZ)
4.6	166 km	New Zealand: 4.6 OFF E. COAST OF N. ISLAND, N.Z.	EMSC
4.6	166 km	New Zealand: Off E. Coast of N. Island, N.Z.	RaspberryShake

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Seismograms

Seismic station: South Karori, New Zealand (SNZO/IU network) | Distance from quake: 805 km / 500 mi | Show on map | Station Info

Seismic station South Karori, New Zealand: 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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