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Weak mag. 2.3 earthquake - Tasman Sea, 32 km southeast of Blenheim, Marlborough District, New Zealand, on Monday, Mar 20, 2023 at 6:48 pm (GMT +13) -

Weak mag. 2.3 earthquake - Tasman Sea, 32 km southeast of Blenheim, Marlborough District, New Zealand, on Monday, Mar 20, 2023 at 6:48 pm (GMT +13) Weak mag. 2.3 earthquake - Tasman Sea, 32 km southeast of Blenheim, Marlborough District, New Zealand, on Monday, Mar 20, 2023 at 6:48 pm (GMT +13)

Weak magnitude 2.3 earthquake at 5 km depth

20 Mar 05:49 UTC: First to report: GEONET (NZ) after 55 seconds.
20 Mar 05:50: Magnitude recalculated from 2.1 to 2.3. Hypocenter depth recalculated from 14.8 to 13.2 km (from 9.2 to 8.2 mi). Epicenter location corrected by 1.6 km (1 mi) towards NE.
20 Mar 05:51: Hypocenter depth recalculated from 13.2 to 9.1 km (from 8.2 to 5.7 mi). Epicenter location corrected by 2.4 km (1.5 mi) towards NNW.
20 Mar 05:58: Hypocenter depth recalculated from 9.1 to 5.0 km (from 5.7 to 3.1 mi). Epicenter location corrected by 1.1 km (0.7 mi) towards ESE.

Earthquake details

Date & timeMar 20, 2023 05:48:09 UTC -
Local time at epicenterMonday, Mar 20, 2023 at 6:48 pm (GMT +13)
Depth5.0 km
Epicenter latitude / longitude41.65063°S / 174.28812°E (Tasman Sea, New Zealand)
Antipode41.651°N / 5.712°W
Shaking intensityWeak shaking near epicenter
Felt0 reports
Primary data sourceGEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearby towns and cities17 km (11 mi) E of Seddon (pop: 511) | Show on map | Quakes nearby
32 km (20 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
57 km (36 mi) SW of Wellington (pop: 381,900) | Show on map | Quakes nearby
70 km (43 mi) SW of Wainuiomata (pop: 19,400) | Show on map | Quakes nearby
71 km (44 mi) SW of Lower Hutt (pop: 101,200) | Show on map | Quakes nearby
74 km (46 mi) SW of Porirua (pop: 50,900) | Show on map | Quakes nearby
94 km (58 mi) ESE of Nelson (pop: 59,200) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 20.3°C (69 F), humidity: 76%, wind: 14 m/s (27 kts) from N
Estimated seismic energy released1.8 x 108 joules (49.4 kilowatt hours) | about seismic energy
Show interactive Map
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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.
2.35 kmNew ZealandGEONET (NZ)
2.35 kmCook Strait, New ZealandRaspberryShake

User reports for this quake

At magnitude 2.3, 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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