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Minor mag. 2.1 earthquake - Tasman Sea, 98 km northeast of Nelson, New Zealand, on Sunday, Dec 4, 2022 at 10:53 pm (GMT +13) -

Minor magnitude 2.1 earthquake at 81 km depth

4 Dec 09:55 UTC: First to report: GEONET (NZ) after 1 minute.
4 Dec 09:56: Magnitude recalculated from 1.6 to 2.2. Hypocenter depth recalculated from 90.3 to 77.9 km (from 56 to 48 mi). Epicenter location corrected by 1.6 km (1 mi) towards N.
4 Dec 10:10: Magnitude recalculated from 2.2 to 2.1. Hypocenter depth recalculated from 77.9 to 81.4 km (from 48 to 51 mi). Epicenter location corrected by 2.2 km (1.3 mi) towards SE.

Earthquake details

Date & time	Dec 4, 2022 09:53:48 UTC -
Local time at epicenter	Sunday, Dec 4, 2022 at 10:53 pm (GMT +13)
Status	Confirmed
Magnitude	2.1
Depth	81.4 km
Epicenter latitude / longitude	40.52766°S / 173.9024°E (Tasman Sea, New Zealand)
Antipode	40.528°N / 6.098°W
Shaking intensity	Not felt
Felt
Primary data source	GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearest volcano	Taranaki (137 km / 85 mi)
Nearby towns and cities	85 km (53 mi) N of Havelock (pop: 504) \| Show on map \| Quakes nearby 98 km (61 mi) NNE of Nelson (pop: 59,200) \| Show on map \| Quakes nearby 103 km (64 mi) WNW of Paraparaumu (pop: 30,600) \| Show on map \| Quakes nearby 104 km (65 mi) NW of Porirua (pop: 50,900) \| Show on map \| Quakes nearby 112 km (70 mi) NW of Wellington (pop: 381,900) \| Show on map \| Quakes nearby 115 km (71 mi) NW of Lower Hutt (pop: 101,200) \| Show on map \| Quakes nearby 118 km (73 mi) SW of Whanganui (pop: 40,300) \| Show on map \| Quakes nearby 118 km (73 mi) NW of Upper Hutt (pop: 38,400) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 15.9°C (61 F), humidity: 82%, wind: 11 m/s (21 kts) from W
Estimated seismic energy released	8.9 x 10⁷ joules (24.8 kilowatt hours) \| 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
2.1	81 km	New Zealand	GEONET (NZ)
2.1	81 km	Cook Strait, New Zealand	RaspberryShake

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Seismograms

Seismic station: South Karori, New Zealand (SNZO/IU network) | Distance from quake: 110 km / 68 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: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

At magnitude 2.1, such a quake wouldn't normally be felt by people except under very favorable conditions.

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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