Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 7.1 on date 24-04-2023 and time 00:42:02 (UTC) in region Kermadec Islands, New Zealand [Sea: New Zealand]

A magnitude Mwp 7.1 earthquake occured in region: Kermadec Islands, New Zealand [Sea: New Zealand], on

  • 24-04-2023 00:42:02 (UTC)
  • 24-04-2023 02:42:02 (UTC +02:00) Italian time
  • 24-04-2023 13:42:02 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -29.5590, -177.7950 at 91 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		mb 5.8
Mwp 7.1
Mwpd 7.1 		2023-04-24
00:42:02		 -29.5594 -177.795 91 2023-04-24
01:00:31		 Sala Sismica INGV-Roma 116674671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-24 00:42:02
Latitude -29.5594
Longitude -177.7950
Depth (km) 91 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 116674671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 19936
Semi-minor axis of confidence ellipse (meter) 13058
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 165
Circular confidence region, given by single value of horizontal uncertainty (meter) 19261.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61.8549
Number of associated phases, regardless of their use for origin computation 80
Number of defining phases 80
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.401
Epicentral distance of station closest to the epicenter (degree) 0.33541
Epicentral distance of station farthest from the epicenter (degree) 90.93219
Number of stations at which the event was observed 65
Number of stations from which data was used for origin computation 65
Magnitudes information

Mwpd:7.1

Field Value
Value 7.1
Uncertainty 0.2
Num. used stations 30
Type of magnitude Mwpd
Reference to an origin 116674671
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-24 01:00:31

Mwp:7.1

Field Value
Value 7.1
Uncertainty 0.2
Num. used stations 31
Type of magnitude Mwp
Reference to an origin 116674671
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-24 01:00:31

mb:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 35
Type of magnitude mb
Reference to an origin 116674671
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-24 01:00:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
US.NLWA.BHZ.00 2023-04-24T00:54:57.18 10.0 positive automatic P 33 10093.4742 1.62953 0.0880386
G.UNM.BHZ.00 2023-04-24T00:54:53.75 10.0 positive automatic PcP 68 9997.7367 0.767173 0
US.WVOR.BHZ.00 2023-04-24T00:54:53.18 10.0 negative automatic P 39 10013.2989 0.866423 0.086692
IU.COR.BHZ.00 2023-04-24T00:54:49.37 10.0 positive automatic PcP 35 9903.4866 0.52189 0
IU.LCO.BHZ.00 2023-04-24T00:54:47.92 10.0 positive automatic P 123 9890.0445 0.639636 0.0515202
IU.TUC.BHZ.00 2023-04-24T00:54:46.85 10.0 positive automatic P 51 9840.3942 1.89606 0.105027
IU.PAYG.BHZ.00 2023-04-24T00:54:43.05 10.0 positive automatic P 89 9712.1115 3.67505 0.104765
G.PEL.BHZ.00 2023-04-24T00:54:36.95 10.0 positive automatic P 127 9637.5528 0.747909 0
IU.INCN.BHZ.00 2023-04-24T00:54:26.97 10.0 positive automatic P 319 9416.2854 0.72255 0.0859705
IU.YSS.BHZ.00 2023-04-24T00:54:25.15 10.0 positive automatic P 334 9365.847 1.17108 0.136772
AT.AKUT.BHZ. 2023-04-24T00:54:23.82 10.0 negative automatic P 7 9361.1739 0.0769368 0
GT.PLCA.BHZ.00 2023-04-24T00:54:16.83 10.0 positive automatic P 133 9182.8191 1.1252 0.150715
II.EFI.BHZ.00 2023-04-24T00:54:16.00 10.0 negative automatic P 147 9227.6964 -0.626873 0.147233
C.GO06.BHZ. 2023-04-24T00:54:16.65 10.0 positive automatic P 132 9186.5043 0.743174 0.146929
IU.ADK.BHZ.00 2023-04-24T00:54:08.47 10.0 positive automatic P 1 9040.2729 -0.358272 0.160134
JP.JTU.BHZ. 2023-04-24T00:54:07.40 10.0 positive automatic P 318 9009.0708 0.0692632 0
MY.KOM.BHZ. 2023-04-24T00:54:05.77 10.0 positive automatic P 277 8967.579 0.427798 0
G.PAF.BHZ.00 2023-04-24T00:54:05.45 10.0 positive automatic P 218 8954.2479 0.755567 0.078034
C1.LL02.BHZ. 2023-04-24T00:54:04.35 10.0 negative automatic P 135 8945.6565 0.00752659 0.167787
C1.LL01.BHZ. 2023-04-24T00:54:04.93 10.0 negative automatic P 134 8954.2923 0.221049 0.167082
JP.JTM.BHZ. 2023-04-24T00:54:01.25 10.0 positive automatic P 330 8879.3451 0.154425 0.167351
II.COCO.BHZ.00 2023-04-24T00:54:01.55 10.0 positive automatic P 262 8885.1282 0.190303 0
IU.TATO.BHZ.00 2023-04-24T00:53:59.32 10.0 positive automatic P 307 8854.6809 -0.581201 0.0818779
G.COYC.BHZ.00 2023-04-24T00:53:57.65 10.0 negative automatic P 137 8790.6783 0.861496 0.178608
GE.MNAI.BHZ. 2023-04-24T00:53:52.32 10.0 positive automatic P 271 8713.5999 -0.656703 0.173062
JP.JSU.BHZ. 2023-04-24T00:53:52.15 10.0 positive automatic P 317 8700.846 -0.236471 0.190662
JP.YOJ.BHZ. 2023-04-24T00:53:51.35 10.0 positive automatic P 307 8701.5342 -1.00751 0.0879698
JP.JMN.BHZ. 2023-04-24T00:53:50.50 10.0 positive automatic P 321 8663.4612 -0.0510361 0.181027
IU.MAJO.BHZ.00 2023-04-24T00:53:48.97 10.0 positive automatic P 325 8651.0625 -0.941887 0.170674
G.INU.BHZ.00 2023-04-24T00:53:47.66 10.0 positive automatic P 324 8613.4224 -0.319064 0.198412
JP.JSG.BHZ. 2023-04-24T00:53:42.40 10.0 positive automatic P 324 8489.5131 0.676851 0.0967651
JP.JOW.BHZ. 2023-04-24T00:53:41.50 10.0 positive automatic P 312 8485.8612 -0.056798 0.200448
JP.JHJ2.BHZ. 2023-04-24T00:53:29.60 10.0 positive automatic P 324 8260.3758 -0.312708 0.106741
JP.JMZ.BHZ. 2023-04-24T00:53:25.95 10.0 positive automatic P 313 8197.3833 -0.657634 0.207726
IU.PMSA.BHZ.00 2023-04-24T00:53:21.32 10.0 positive automatic P 156 8071.8312 1.36034 0.244044
GE.SMRI.BHZ. 2023-04-24T00:53:08.17 10.0 positive automatic P 273 7846.257 0.367353 0.266679
GE.BKB.BHZ. 2023-04-24T00:52:53.27 10.0 positive automatic P 282 7559.1 1.4273 0.283747
GE.JAGI.BHZ. 2023-04-24T00:52:42.22 10.0 positive automatic P 273 7412.5578 -1.31656 0.263917
II.KAPI.BHZ.00 2023-04-24T00:52:23.12 10.0 positive automatic P 280 7064.8392 -0.190512 0.333461
GE.LUWI.BHZ. 2023-04-24T00:52:19.92 10.0 positive automatic P 285 7012.2696 -0.221618 0.343118
GE.TNTI.BHZ. 2023-04-24T00:52:00.82 10.0 positive automatic P 290 6701.9358 -0.571266 0.371073
GE.SANI.BHZ. 2023-04-24T00:51:57.22 10.0 positive automatic sP 286 6652.2966 -1.11538 0.353827
GE.MMRI.BHZ. 2023-04-24T00:51:56.52 10.0 positive automatic P 278 6626.7222 -0.254849 0.416108
AU.MORW.BHZ. 2023-04-24T00:51:35.02 10.0 positive automatic P 253 6309.4509 -1.87859 0.458253
IU.MBWA.BHZ.00 2023-04-24T00:51:32.52 10.0 positive automatic P 263 6263.3526 -1.42175 0.470142
G.KIP.BHZ.00 2023-04-24T00:51:20.52 10.0 positive automatic P 23 6040.6089 0.983 0.473032
IU.NWAO.BHZ.00 2023-04-24T00:51:19.00 10.0 positive automatic P 249 6077.2611 -1.97296 0.226332
IU.POHA.BHZ.00 2023-04-24T00:51:16.27 10.0 positive automatic P 26 5969.5578 1.06303 0.499711
IU.WAKE.BHZ.00 2023-04-24T00:50:54.90 10.0 positive automatic sP 341 5671.0344 -0.10736 0.461345
AU.KDU.BHZ.00 2023-04-24T00:50:38.35 10.0 positive automatic P 279 5432.0958 -0.378336 0.558774
AU.WRKA.BHZ.00 2023-04-24T00:50:27.53 10.0 negative automatic P 262 5294.3337 -1.76728 0.606758
AU.FORT.BHZ.00 2023-04-24T00:50:16.80 10.0 positive automatic P 254 5145.3384 -1.9727 0.6379
AU.QLP.BHZ. 2023-04-24T00:48:32.45 10.0 positive automatic P 266 3717.057 0.0811027 0.738181
AU.TOO.BHZ.00 2023-04-24T00:48:13.05 10.0 positive automatic P 245 3486.2214 -1.20831 0.600901
II.TAU.BHZ.00 2023-04-24T00:48:07.57 10.0 positive automatic P 235 3424.461 -1.71102 0.934774
IU.HNR.BHZ.00 2023-04-24T00:47:52.72 10.0 positive automatic P 309 3213.4056 0.241806 0
G.PPTF.BHZ.00 2023-04-24T00:47:49.15 10.0 negative automatic P 71 3152.4333 1.44538 0.930233
AU.MILA.BHZ.00 2023-04-24T00:47:48.70 10.0 positive automatic P 246 3159.171 0.442194 0.952381
G.CAN.BHZ.00 2023-04-24T00:47:48.75 10.0 positive automatic P 250 3160.4475 0.404888 0.888889
AU.EIDS.BHZ. 2023-04-24T00:47:44.37 10.0 negative automatic P 271 3090.9726 1.66886 0.941176
AU.RIV.BHZ. 2023-04-24T00:47:33.45 10.0 positive automatic P 253 2958.7605 1.43181 0.963855
AU.ARMA.BHZ. 2023-04-24T00:47:32.12 10.0 positive automatic P 260 2932.0317 2.08507 0.909091
IU.RAR.BHZ.00 2023-04-24T00:46:06.05 10.0 negative automatic P 67 2027.1708 -2.09493 0.930233
AU.NFK.BHZ.00 2023-04-24T00:44:56.60 10.0 negative automatic P 269 1381.2285 1.0599 0.328947
IU.RAO.BHZ.00 2023-04-24T00:42:10.75 10.0 positive automatic P 340 37.2294 -4.70637 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download