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Minor mag. 2.7 earthquake - 38 km north of Blenheim, Marlborough District, New Zealand, on Sunday, Dec 4, 2022 at 8:59 pm (GMT +13) -

Minor magnitude 2.7 earthquake at 40 km depth

4 Dec 08:01 UTC: First to report: GEONET (NZ) after 1 minute.
4 Dec 08:02: Magnitude recalculated from 2.7 to 2.8. Hypocenter depth recalculated from 56.1 to 38.4 km (from 35 to 24 mi). Epicenter location corrected by 9.9 km (6.1 mi) towards NNW.
4 Dec 08:12: Magnitude recalculated from 2.8 to 2.7. Hypocenter depth recalculated from 38.4 to 39.9 km (from 24 to 25 mi). Epicenter location corrected by 0.9 km (0.5 mi) towards E.

Earthquake details

Date & time	Dec 4, 2022 07:59:41 UTC -
Local time at epicenter	Sunday, Dec 4, 2022 at 8:59 pm (GMT +13)
Status	Confirmed
Magnitude	2.7
Depth	39.9 km
Epicenter latitude / longitude	41.17789°S / 173.85725°E (Marlborough District, Marlborough, New Zealand)
Antipode	41.178°N / 6.143°W
Shaking intensity	Not felt
Felt
Primary data source	GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearest volcano	Taranaki (210 km / 130 mi)
Nearby towns and cities	14 km (9 mi) NNE of Havelock (pop: 504) \| Show on map \| Quakes nearby 18 km (11 mi) NW of Picton (pop: 4,790) \| Show on map \| Quakes nearby 38 km (24 mi) NNW of Blenheim (pop: 26,600) \| Show on map \| Quakes nearby 54 km (34 mi) ENE of Stoke (Nelson) (pop: 19,800) \| Show on map \| Quakes nearby 75 km (47 mi) W of Karori (Wellington) (pop: 15,700) \| Show on map \| Quakes nearby 78 km (48 mi) W of Wellington (pop: 381,900) \| Show on map \| Quakes nearby 83 km (52 mi) W of Porirua (Wellington) (pop: 50,900) \| Show on map \| Quakes nearby 89 km (55 mi) W of Lower Hutt (Wellington) (pop: 101,200) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 9.9°C (50 F), humidity: 62%, wind: 2 m/s (3 kts) from NW
Estimated seismic energy released	7.1 x 10⁸ joules (197 kilowatt hours, equivalent to 0.169 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
2.7	40 km	New Zealand	GEONET (NZ)
2.7	40 km	South Island, New Zealand	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in New Zealand

Seismograms

Seismic station: South Karori, New Zealand (SNZO/IU network) | Distance from quake: 72 km / 45 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 2.7, this quake might have been felt very close to the epicenter and under calm 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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