Moderate mag. 4.2 earthquake - South Pacific Ocean, 21 km northeast of Christchurch, Canterbury, New Zealand, on 31 May 9:47 pm (GMT +12) -

Moderate mag. 4.2 earthquake - South Pacific Ocean, 21 km northeast of Christchurch, Canterbury, New Zealand, on 31 May 9:47 pm (GMT +12)

Séisme modéré magnitude 4.2 at 9 km depth

31 May 09:49 UTC: Premier à signaler: GEONET (NZ) après 2 minutes.
31 May 09:52: Profondeur recalculée de 8.5 à 8.8 km (de 5.3 à 5.5 mi).
31 May 09:56: Profondeur recalculée de 8.8 à 8.7 km (de 5.5 à 5.4 mi).
Update Mon, 31 May 2021, 09:54
Moderate magnitude 4.2 quake hits 21 km northeast of Christchurch, New Zealand in the evening
4.2 quake 31 May 9:47 pm (GMT +12)
4.2 quake 31 May 9:47 pm (GMT +12)
New Zealand's Earthquake Commission and Geological Survey (GeoNet) reported a magnitude 4.2 quake in New Zealand near Christchurch, Christchurch City, Canterbury, only 7 minutes ago. The earthquake hit in the evening on Monday 31 May 2021 at 9:47 pm local time at a very shallow depth of 8.8 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 4.2 earthquake as well.
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 Kaiapoi (pop. 10,200) located 20 km from the epicenter, Pegasus (pop. 3,400) 21 km away, Christchurch (pop. 363,900) 21 km away, Woodend (pop. 3,100) 22 km away, Rangiora (pop. 18,400) 28 km away, Prebbleton (pop. 3,600) 32 km away, Amberley (pop. 1,100) 34 km away, Lincoln (pop. 2,200) 38 km away, and Rolleston (pop. 3,100) 42 km away.
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Earthquake data:

Date & time: 31 May 2021 09:47:24 UTC -
Local time at epicenter: 31 May 9:47 pm (GMT +12)
Magnitude: 4.2
Profondeur: 8.7 km
Epicenter latitude / longitude: 43.44457°S / 172.86444°E (South Pacific Ocean, Nouvelle-Zélande)
Nearby towns and cities:
20 km ESE de Kaiapoi (pop: 10,200) --> Voir les séismes à proximité!
21 km ENE de Christchurch (pop: 363,900) --> Voir les séismes à proximité!
28 km SE de Rangiora (pop: 18,400) --> Voir les séismes à proximité!
32 km ENE de Prebbleton (pop: 3,600) --> Voir les séismes à proximité!
34 km SSE de Amberley (pop: 1,110) --> Voir les séismes à proximité!
42 km ENE de Rolleston (pop: 3,120) --> Voir les séismes à proximité!
57 km ESE de Oxford (pop: 1,780) --> Voir les séismes à proximité!
58 km NE de Leeston (pop: 1,270) --> Voir les séismes à proximité!
61 km E de Darfield (pop: 1,590) --> Voir les séismes à proximité!
287 km SSO de Wellington (pop: 381,900) --> Voir les séismes à proximité!
19 km SO de Pegasus Island (pop: 350) --> Voir les séismes à proximité!
159 km ESE de South Island (pop: 1,135,500) --> Voir les séismes à proximité!
Weather at epicenter at time of quake:
Overcast Clouds 8.8°C (48 F), humidity: 82%, wind: 8 m/s (15 kts) from SW
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) Plus d'infos
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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.ProfondeurLieuSource
4.28.7 kmNew ZealandGEONET (NZ)
4.28 km4.2 SOUTH ISLAND OF NEW ZEALANDEMSC
unknownn/aNear Christchurch, Canterbury, New ZealandVolcanoDiscovery

User reports for this quake (158)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Burnside, Christchurch (24.2 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : Very slight shudder. I had headphones on so thought it was the siding door from the bedroom next door. Only realized it was quake when I recieved quake alert from the new system being tested in NZ. | 2 users found this interesting. (reported through our app)  
Christchurch, Canterbury (13.5 km WSW of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 5-10 s : Our kids woke up.. was Our bed was shaking and doors and windows rattle.. and you heard a growling | 2 users found this interesting. (reported through our app)  
Christchurch / not felt : Didn't feel it on couch downstairs but my husband was upstairs and felt it. He said long and rumbling. But very mild, not a strong quake at all. | One user found this interesting.  
Christchurch (12 km SE of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s : Felt a small earthquake in Christchurch it lasted about 3 seconds in total and made my lights and cables swing. Around a magnitude 4 easily. (reported through our app)  
Watching RV in the hotel / Light shaking (MMI IV) / vibration and rolling / 2-5 s : First night here. Crapping myself | 2 users found this interesting.  
Christchurch CBD / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Felt like a person jumping on my bed. | One user found this interesting.  
The pines beach / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : After the floods today I've had enough! | One user found this interesting.  
Lyttelton / Light shaking (MMI IV) / 2-5 s : Rumbling and shaking and a jolt | One user found this interesting.  
Christchurch, Canterbury (16.8 km SW of epicenter) [Map] / Weak shaking (MMI III) / 2-5 s
Kaiapoi, Waimakariri District, Canterbury (12.8 km NW of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging : Felt my bed moving slightly it didn't last long  
Prebbleton, Selwyn District, Canterbury (32.2 km SW of epicenter) [Map] / not felt
near Kaiapoi, Waimakariri District, Canterbury (1.6 km SE of epicenter) [Map] / Weak shaking (MMI III) / 1-2 s : I felt it at Strowan  
Christchurch, Canterbury (23.3 km WSW of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s
near Kaiapoi, Waimakariri District, Canterbury (2.4 km WSW of epicenter) [Map] / not felt : Didn't feel the quake, we are in Burwood Chch  
Christchurch, Canterbury (25.1 km WSW of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / very short
Christchurch, Canterbury (23.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Prebbleton, Selwyn District, Canterbury (28.5 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s (reported through our app)
Kaiapoi, Waimakariri District, Canterbury (18 km WNW of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s : 2 short shakes  
Kaiapoi, Waimakariri District, Canterbury (21.4 km W of epicenter) [Map] / Weak shaking (MMI III) / both vertical and horizontal swinging / 20-30 s (reported through our app)
Pegasus, Canterbury (24.5 km NNW of epicenter) [Map] / Weak shaking (MMI III) / 1-2 s : I heard a rattle and felt a tiny vibration  
Kaiapoi, Waimakariri District, Canterbury (20.2 km W of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating
Kaiapoi, Waimakariri District, Canterbury (22.5 km WNW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 5-10 s
Christchurch, Canterbury (15.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Christchurch, Canterbury (18.6 km WSW of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 5-10 s : Pretty sure we experienced 2 quakes (reported through our app)  
Christchurch, Canterbury (13.8 km SW of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 5-10 s (reported through our app)
Rangiora, Waimakariri District, Canterbury (24.3 km WNW of epicenter) [Map] / Weak shaking (MMI III) / very short : A small shake  
Governors Bay (34.4 km W of epicenter) [Map] / Light shaking (MMI IV) / 10-15 s : Windows and doors rattled  
Prebbleton, Selwyn District, Canterbury (28.1 km WSW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 2-5 s
Christchurch nz (18.8 km W of epicenter) [Map] / Light shaking (MMI IV)
Richmond christchurch / Light shaking (MMI IV) / horizontal (sideways) swinging
Saltwater Creek / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
Christchurch / Weak shaking (MMI III) : Shaking of bed  
Belfast / Very weak shaking (MMI II) / single lateral shake / 5-10 s : Just mild gentle shake  
CHIRSTCHURCH / Very weak shaking (MMI II) / single lateral shake / very short
Northwood, Christchurch / Moderate shaking (MMI V) / 15-20 s
Christchurch / Light shaking (MMI IV) / single vertical bump / very short
Christchurch / not felt
Christchurch / not felt
Christchurch / Light shaking (MMI IV) / vibration and rolling / 5-10 s : A long wobble. 7 sec.  
319 estuary road South Brighton / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Dallington chch / Light shaking (MMI IV) / single lateral shake / 2-5 s : A good shake  
Burnside / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
Sefton / Weak shaking (MMI III) / 1-2 s
Christchurch / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
Christchurch central / Light shaking (MMI IV) / 2-5 s
Christchurch / Very weak shaking (MMI II)
Christchurch Burnside / not felt
Christchurch / Weak shaking (MMI III) / 20-30 s : We heard it coming then sharp jolt but then it kept rolling wasn't nice thought it was going to get worse.  
Christchurch / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s : I heard rumbling coming from the north,and my bed was gently rolling.  
Bishopdale / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Ifelt Sharpe thump all thru the house things were rattling  
Chch (11.7 km ENE of epicenter) [Map] / Moderate shaking (MMI V) / vibration and rolling / 2-5 s
Christchurch / Light shaking (MMI IV) / very short
Huntsbury Christchurch / Light shaking (MMI IV) / single lateral shake / 1-2 s
CHIRSTCHURCH / Very weak shaking (MMI II) / single lateral shake / very short
76 Alexandra street Richmond (1.6 km SE of epicenter) [Map] / Weak shaking (MMI III) : My house was shaking.  
Christchurch / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Halswell / Very weak shaking (MMI II) : Small shake in bed not very long duration  
668 Broad Rd Balcairn / Very weak shaking (MMI II) / single vertical bump / very short : Small jolt made the house creak  
Redwood Christchurch / Light shaking (MMI IV) / 10-15 s : Was watching tv chair shook.  
Christchurch / Weak shaking (MMI III) / single lateral shake
Kaiapoi (42.7 km NE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
Broomfield / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Kaipoi / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s : I was woken from a deep sleep by a rhythmic motion lasting quite a few seconds  
Leithfield / Very weak shaking (MMI II) / very short : Sharp bang  
Hornby christchurch / Weak shaking (MMI III) : Short jolt  
in Chch
Duvauchelle Banks peninsula / Light shaking (MMI IV) / single lateral shake / 1-2 s : Spooky still wired to respond quickly after 2011 experience  
Christchurch / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
South New Brighton / Very weak shaking (MMI II) / vibration and rolling / very short : A mild wobbling  
Akaroa / Weak shaking (MMI III) / rattling, vibrating / very short
Kaiapoi / Light shaking (MMI IV) : Noisy and long  
christchurch st.martins in bed reading / Weak shaking (MMI III) : worried in case it increased  
Pegasus / Light shaking (MMI IV) / single lateral shake / 2-5 s : It was a good jolt that the windows sounded like they were cracking.  
Leeston / Very weak shaking (MMI II)
Christchurch / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : I was a sleep in bed & it woke me up..  
Timaru / not felt
1 Rich Street Kaiapoi / Moderate shaking (MMI V) / horizontal (sideways) swinging / 10-15 s
Kaiapoi / Weak shaking (MMI III)
Christchurch / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : Back and forward rocking motion. Very noisy and long  
christchurch / Weak shaking (MMI III) / single lateral shake / 5-10 s
Mairehau, Christchurch / Very weak shaking (MMI II) / simple rolling (tilting sideways along one direction) / 2-5 s : It was like a gentle rolling.  
Kaiapoi (18.8 km WNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 10-15 s : I felt a small shake  
Linwood Christchurch (17.8 km WSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s (reported through our app)
Riccarton, Christchurch (24.6 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s
Saltwater Creek / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
christchurch / Weak shaking (MMI III) / single lateral shake / 2-5 s
2 homestead ln (25 km WSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : Shook bed I was sitting on on third floor of my apartment  
Bexley, Christchurch / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) / 15-20 s
Christchurch / Weak shaking (MMI III) / horizontal (sideways) swinging / very short : Eesk  
Pegasus / Weak shaking (MMI III) / rattling, vibrating / 15-20 s
Canterbury university (25 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / very short
124 pine av south brighton / Light shaking (MMI IV) / complex motion difficult to describe / 2-5 s : Heard it coming first. Seemed to go on for ages.  
Christchurch / Very weak shaking (MMI II)
Christchurch Upper Riccarton / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
1 Rich Street Kaiapoi / Moderate shaking (MMI V) / horizontal (sideways) swinging / 5-10 s : Stronger and more violent than a truck passing. Stuff in cupboards rattled loudly. Doors banged.  
Christchurch / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Mc Cormacks Bay / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
St albans / Light shaking (MMI IV) / single lateral shake / 1-2 s
Bishopdale, Christchurch / not felt : Quite a shake  
sprydon christchurch / Weak shaking (MMI III)
Canterbury (20.1 km NW of epicenter) [Map] / Light shaking (MMI IV) / 20-30 s
Richmond christchurch / Light shaking (MMI IV) / horizontal (sideways) swinging
Christchurch (25.2 km WSW of epicenter) [Map] / Light shaking (MMI IV) : Very light indeed, woke up to light shaking with cables swinging, a glass rattling and and lights turning on and off quickly, lasted around 3 seconds from where I am located, and could trigger a tsunami at coastal areas. (reported through our app)  
Kaiapoi / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : Rumbling noise and shuddering  
Christchurch / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
christchurch new zealand / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
668 Broad Rd Balcairn / Very weak shaking (MMI II) / single vertical bump / very short : Small jolt made the house creak  
Rangiora / Very weak shaking (MMI II) / 2-5 s
Waikuku Beach / Light shaking (MMI IV) / single lateral shake
Pacific road chc / Moderate shaking (MMI V) / complex rolling (tilting in multiple directions) / 20-30 s
Christchurch / Light shaking (MMI IV) : Light shaking and alert but no message  
Kaiapoi / Light shaking (MMI IV) / 30-60 s : Rolling, shaking, rattling, swaying of fixtures and furniture  
Clarkville / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : Felt house shaking. Woken from sleep  
Riccarton, Christchurch (430.7 km NNW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : Bed shook for a few seconds  
Christchurch / Light shaking (MMI IV) / rattling, vibrating / very short
Rangiora / not felt : I heard it coming and then home creaking  
Kaiapoi / Very weak shaking (MMI II) / single lateral shake / 5-10 s
Christchurch (24 km W of epicenter) [Map] / Light shaking (MMI IV) : B  
West Melton / not felt : Alert on my phone  
Christchurch / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
Kaiapoi
Christchurch (20.7 km WSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
Christchurch - Strowan / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : Heard it’s rumbling approach before it shook the house  
59 Grenville street / Very weak shaking (MMI II) / complex motion difficult to describe / 5-10 s : Just a wee rolling  
Christchurch / Moderate shaking (MMI V) / single lateral shake : Shaking n moving object  
8 clark street / Light shaking (MMI IV) / 2-5 s
Christchurch / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s
Parklands / Weak shaking (MMI III) / very short
Pegasus / Weak shaking (MMI III) / rattling, vibrating / 15-20 s
Christchurch (13.6 km WSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : Uneasy  
riccarton (24.1 km WSW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / very short
Springston / Very weak shaking (MMI II) / rattling, vibrating / very short
Christchurch (19.8 km WSW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s (reported through our app)
Christchurch NZ / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : Noisy, more shaking than usual.  
Christchurch / Weak shaking (MMI III) / single vertical bump / 2-5 s
Shirley / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Christchurch / Light shaking (MMI IV) / rattling, vibrating
Rangiora / Very weak shaking (MMI II) : Light and short shake, what was getting a bit stronger. But still light  
Christchurch / Light shaking (MMI IV) / single lateral shake / very short : Sudden jolt  
Christchurch central / Light shaking (MMI IV) / 5-10 s
Kaiapoi / Weak shaking (MMI III) / horizontal (sideways) swinging / 10-15 s
Merivale chch / Very weak shaking (MMI II) / single vertical bump / 10-15 s : Mild shake  
Christchurch / Light shaking (MMI IV) / single lateral shake / 1-2 s
Christchurch / Weak shaking (MMI III) / rattling, vibrating / 20-30 s
christchurch / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : bed shaking  
Lincoln / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Montreal street, christchurch / Weak shaking (MMI III) / single lateral shake / 2-5 s
Rangiora / Light shaking (MMI IV)
Cleland street, Belfast / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
Christchurch / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s
8061 (15.2 km SW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s
Northcote Christchurch / Light shaking (MMI IV) / rattling, vibrating / 5-10 s
Christchurch / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : Objects rattling and windows flexing  
Wigram / Weak shaking (MMI III) / single vertical bump / 1-2 s
Christchurch / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Very light shaking, two separate occurrences about 3 seconds apart  
12 Melrose street / Weak shaking (MMI III) / very short
Christchurch / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Christchurch / Light shaking (MMI IV) / single vertical bump / 1-2 s
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