Moderate mag. 4.2 earthquake - 63 km south of Hokitika, Westland District, West Coast, New Zealand, on 5 May 11:55 pm (GMT +12) -
Moderate magnitude 4.2 earthquake at 5 km depth
5 May 11:58 UTC: First to report: GEONET (NZ) after 2 minutes.
5 May 12:01: Magnitude recalculated from 4.1 to 4.2. Epicenter location corrected by 1.8 km (1.1 mi) towards SW.
Update Wed, 5 May 2021, 12:03Magnitude 4.2 earthquake strikes near Hokitika, Westland District, West Coast, New Zealand
4.2 quake 5 May 11:55 pm (GMT +12)
New Zealand's Earthquake Commission and Geological Survey (GeoNet) reported a magnitude 4.2 quake in New Zealand near Hokitika, Westland District, West Coast, only 7 minutes ago. The earthquake hit late at night on Wednesday 5 May 2021 at 11:55 pm local time at a very shallow depth of 5 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.1 earthquake.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Harihari (pop. 350) located 26 km from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Hokitika (pop. 3,400) located 63 km from the epicenter, Methven (pop. 1,200) 78 km away, Greymouth (pop. 9,400) 95 km away, Greymouth (pop. 9,400) 95 km away, Geraldine (pop. 2,300) 97 km away, and Ashburton (pop. 30,100) 101 km away.
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Date & time: 5 May 2021 11:55:38 UTC -
Local time at epicenter:
5 May 11:55 pm (GMT +12)
Depth: 5.0 km
Epicenter latitude / longitude: 43.27179°S / 170.82729°E
, West Coast
, New Zealand
Nearby towns and cities:26 km (16 mi) ESE of Harihari
(pop: 345) --> See nearby quakes!63 km (39 mi) S of Hokitika
(pop: 3,400) --> See nearby quakes!78 km (48 mi) WNW of Methven (Canterbury)
(pop: 1,240) --> See nearby quakes!95 km (59 mi) SSW of Greymouth (Grey District)
(pop: 9,420) --> See nearby quakes!97 km (60 mi) NNW of Geraldine (Canterbury)
(pop: 2,300) --> See nearby quakes!101 km (63 mi) NW of Ashburton (Canterbury)
(pop: 30,100) --> See nearby quakes!130 km (81 mi) NNW of Timaru (Canterbury)
(pop: 28,000) --> See nearby quakes!142 km (88 mi) W of Rangiora (Canterbury)
(pop: 18,400) --> See nearby quakes!149 km (92 mi) W of Christchurch (Canterbury)
(pop: 363,900) --> See nearby quakes!393 km (244 mi) SW of Wellington
(pop: 381,900) --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds 3.8°C
(39 F), humidity: 94%, wind: 1 m/s (3 kts) from WNW
Primary data source: GEONET (NZ)
(Earthquake Commission and Geological Survey, New Zealand)
Estimated released energy: 1.3 x 1011
joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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.
|4.2||5 km||New Zealand||GEONET (NZ)|
|4.1||5 km||4.1 SOUTH ISLAND OF NEW ZEALAND||EMSC|
User reports for this quake (5)
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Whataroa, Westland District, West Coast (14.9 km SW of epicenter) [Map] / Very weak shaking (MMI II) / complex rolling (tilting in multiple directions) : Was loud rumbling noise then 3 small jerks close together.
mokihinui / not felt
hokitika / Weak shaking (MMI III) / 5-10 s
Hari Hari / Weak shaking (MMI III) / rattling, vibrating / very short : very noisy roaring, thump
Auckland / Weak shaking (MMI III) / single vertical bump / 1-2 s
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