Light mag. 3.4 earthquake - 4.8 km east of Christchurch, Canterbury, New Zealand, on Sunday, May 23, 2021 at 23:49 (GMT) -

Light mag. 3.4 earthquake - 4.8 km east of Christchurch, Canterbury, New Zealand, on Sunday, May 23, 2021 at 23:49 (GMT)

Light magnitude 3.4 earthquake at 9 km depth

23 May 23:50 UTC: First to report: GEONET (NZ) after 1 minute.
23 May 23:53: Magnitude recalculated from 3.5 to 3.4. Hypocenter depth recalculated from 13.7 to 9.1 km (from 8.5 to 5.7 mi). Epicenter location corrected by 3.2 km (2 mi) towards ENE.
Date & time: May 23, 2021 23:49:05 UTC -
Magnitude: 3.4
Depth: 9.1 km
Epicenter latitude / longitude: 43.53184°S / 172.69281°E (Christchurch City, Canterbury, New Zealand)
Antipode: 43.532°N / 7.307°W
Nearby towns and cities:
5 km (3 mi) E of Christchurch (pop: 363,900) --> See nearby quakes!
15 km (10 mi) ENE of Prebbleton (pop: 3,600) --> See nearby quakes!
18 km (11 mi) SSE of Kaiapoi (pop: 10,200) --> See nearby quakes!
26 km (16 mi) ENE of Rolleston (pop: 3,120) --> See nearby quakes!
27 km (17 mi) SSE of Rangiora (pop: 18,400) --> See nearby quakes!
41 km (25 mi) NE of Leeston (pop: 1,270) --> See nearby quakes!
47 km (29 mi) E of Darfield (pop: 1,590) --> See nearby quakes!
49 km (30 mi) ESE of Oxford (pop: 1,780) --> See nearby quakes!
87 km (54 mi) ENE of Ashburton (pop: 30,100) --> See nearby quakes!
303 km (188 mi) SSW of Wellington (pop: 381,900) --> See nearby quakes!
Primary data source: GEONET (NZ) (Earthquake Commission and Geological Survey, New Zealand)
Estimated released energy: 7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 tons of TNT) More info
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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.DepthLocationSource
3.49.1 kmNew ZealandGEONET (NZ)
3.010 km8 Km E of Christchurch, New ZealandUSGS
3.020 kmSOUTH ISLAND OF NEW ZEALANDEMSC

User reports for this quake (15)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Burnside. Christchurch (11.3 km WNW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s : Good rumble and quick shake of house. Received a warning on my phone just before. This is a new warning system being tested in Christchurch | 5 users found this interesting. (reported through our app)  
Forth st, richmond, christchurch (3.1 km WNW of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / very short : Crazy, heard a rumble then the whole house just lifted moved and dropped.... the ground never shook.. just felt like the house was guna be picked up.. I initially thought it was a MASSIVE gust of wind. | 3 users found this interesting. (reported through our app)  
Kaiapoi (15.7 km NNW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Google notified me when it was happening, said it was a 4.6 but really it was a 3.4. I definitely thought it was going to get bigger | 2 users found this interesting. (reported through our app)  
Bexley, Christchurch. Nz / Moderate shaking (MMI V) / horizontal (sideways) swinging / 5-10 s : Huge rumble. Large jolt, house shaking when shaking stopped ground still vibrating | One user found this interesting.  
Christchurch, Canterbury (5.6 km W of epicenter) [Map] / Very weak shaking (MMI II) : One big jolt, (reported through our app)  
Christchurch, Canterbury (2.3 km NNE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Christchurch, Canterbury (5.4 km W of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short (reported through our app)
Prebbleton, Selwyn District, Canterbury (12.1 km WSW of epicenter) [Map] / Weak shaking (MMI III) / very short (reported through our app)
Christchurch, Canterbury (6 km N of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s (reported through our app)
14b Cassini Place leeston (40.3 km SW of epicenter) [Map] / not felt (reported through our app)
Burwood, , Christchurch (4.4 km NNW of epicenter) [Map] / Light shaking (MMI IV)
Rowan ave, Christchurch, New Zealand / Light shaking (MMI IV) / complex motion difficult to describe / 2-5 s
Christchurch / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) : I heard it before it came, a sharp bang then a rolling through type of wave, sharp and quick minor rumbling little shake  
Christchurch / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s
Sydenham / Very weak shaking (MMI II) / simple rolling (tilting sideways along one direction) / very short
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