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Minor mag. 1.9 earthquake - Tasman Sea, 29 km southeast of Blenheim, Marlborough District, New Zealand, on Tuesday, Feb 7, 2023 at 7:56 am (GMT +13) -

Minor magnitude 1.9 earthquake at 9 km depth

6 Feb 18:57 UTC: First to report: GEONET (NZ) after 48 seconds.
6 Feb 18:58: Magnitude recalculated from 1.7 to 1.9. Hypocenter depth recalculated from 13.0 to 13.7 km (from 8.1 to 8.5 mi). Epicenter location corrected by 0.5 km (0.3 mi) towards NNW.
6 Feb 19:00: Hypocenter depth recalculated from 13.7 to 9.3 km (from 8.5 to 5.8 mi). Epicenter location corrected by 1.5 km (0.9 mi) towards WNW.

Earthquake details

Date & time	Feb 6, 2023 18:56:17 UTC -
Local time at epicenter	Tuesday, Feb 7, 2023 at 7:56 am (GMT +13)
Status	Confirmed
Magnitude	1.9
Depth	9.3 km
Epicenter latitude / longitude	41.63687°S / 174.25659°E (Tasman Sea, New Zealand)
Antipode	41.637°N / 5.743°W
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	15 km (9 mi) ENE of Seddon (pop: 511) \| Show on map \| Quakes nearby 29 km (18 mi) ESE of Blenheim (pop: 26,600) \| Show on map \| Quakes nearby 56 km (35 mi) SW of Karori (pop: 15,700) \| Show on map \| Quakes nearby 58 km (36 mi) SW of Wellington (pop: 381,900) \| Show on map \| Quakes nearby 72 km (45 mi) SW of Lower Hutt (pop: 101,200) \| Show on map \| Quakes nearby 75 km (46 mi) SW of Porirua (pop: 50,900) \| Show on map \| Quakes nearby 86 km (54 mi) SW of Upper Hutt (pop: 38,400) \| Show on map \| Quakes nearby 91 km (56 mi) ESE of Nelson (pop: 59,200) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Clear Sky 15.3°C (60 F), humidity: 84%, wind: 5 m/s (10 kts) from NNW
Estimated seismic energy released	4.5 x 10⁷ joules (12.4 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
1.9	9.3 km	New Zealand	GEONET (NZ)
1.9	9.3 km	Cook Strait, New Zealand	RaspberryShake

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User reports for this quake

At magnitude 1.9, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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