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Minor mag. 1.6 earthquake - New Zealand on Tuesday, Mar 21, 2023 at 11:54 pm (GMT +13) -

Minor mag. 1.6 earthquake - New Zealand on Tuesday, Mar 21, 2023 at 11:54 pm (GMT +13) Minor mag. 1.6 earthquake - New Zealand on Tuesday, Mar 21, 2023 at 11:54 pm (GMT +13)

Minor magnitude 1.6 earthquake at 54 km depth

21 Mar 10:56 UTC: First to report: GEONET (NZ) after 2 minutes.
21 Mar 10:58: Magnitude recalculated from 1.5 to 1.6. Hypocenter depth recalculated from 49.5 to 49.8 km (from 31 to 31 mi). Epicenter location corrected by 1.7 km (1 mi) towards SE.
21 Mar 11:16: Hypocenter depth recalculated from 49.8 to 53.6 km (from 31 to 33 mi). Epicenter location corrected by 0.7 km (0.4 mi) towards SSE.

Earthquake details

Date & timeMar 21, 2023 10:54:24 UTC -
Local time at epicenterTuesday, Mar 21, 2023 at 11:54 pm (GMT +13)
Depth53.6 km
Epicenter latitude / longitude41.29404°S / 173.54263°E (New Zealand)
Antipode41.294°N / 6.457°W
Shaking intensityNot felt
Primary data sourceGEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Nearest volcanoTaranaki (226 km / 140 mi)
Nearby towns and cities19 km (12 mi) W of Havelock (pop: 504) | Show on map | Quakes nearby
22 km (14 mi) E of Nelson (pop: 59,200) | Show on map | Quakes nearby
26 km (16 mi) E of Stoke (pop: 19,800) | Show on map | Quakes nearby
30 km (19 mi) N of Wairau Valley (pop: 2,150) | Show on map | Quakes nearby
33 km (21 mi) NW of Renwick (pop: 2,620) | Show on map | Quakes nearby
39 km (24 mi) W of Picton (pop: 4,790) | Show on map | Quakes nearby
47 km (30 mi) ESE of Motueka (pop: 7,490) | Show on map | Quakes nearby
103 km (64 mi) W of Wellington (pop: 381,900) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 11.9°C (53 F), humidity: 72%, wind: 1 m/s (2 kts) from SSE
Estimated seismic energy released1.6 x 107 joules (4.4 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.
1.654 kmNew ZealandGEONET (NZ)
1.654 kmSouth Island, New ZealandRaspberryShake

User reports for this quake

At magnitude 1.6, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.
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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