Earthquake with magnitude of Mwp 6.2 on date 24-07-2021 and time 14:51:41 (Italy) in region Kermadec Islands, New Zealand [Sea: New Zealand]

A magnitude Mwp 6.2 earthquake occured in region: Kermadec Islands, New Zealand [Sea: New Zealand], on

  • 24-07-2021 12:51:41 (UTC)
  • 24-07-2021 14:51:41 (UTC +02:00) Italian time
  • 25-07-2021 01:51:41 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -29.812, -177.06 at 88 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.

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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.3
Mwp 6.2

Mwpd 6.4
2021-07-24
12:51:41
-29.8125 -177.06 88 2021-07-24
13:15:27
Sala Sismica INGV-Roma 93150191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-24 12:51:41
Latitude -29.8125
Longitude -177.0600
Depth (km) 88 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 93150191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13543
Semi-minor axis of confidence ellipse (meter) 10397
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 13283
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69.9944
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.81101
Epicentral distance of station closest to the epicenter (degree) 9.54953
Epicentral distance of station farthest from the epicenter (degree) 81.6919
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 45
Magnitudes information

Mwp:6.2

Field Value
Value 6.2
Uncertainty 0.2
Num. used stations 20
Type of magnitude Mwp
Reference to an origin 93150191
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-07-24 13:15:27

Mwpd:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 18
Type of magnitude Mwpd
Reference to an origin 93150191
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-07-24 13:15:27

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 32
Type of magnitude mb
Reference to an origin 93150191
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-07-24 13:15:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.ADK.BHZ.00 2021-07-24T13:03:45.37 10.0 positive automatic P 0 81.6919 -3.61695 0.0742557
C1.LL02.BHZ. 2021-07-24T13:03:39.18 10.0 positive automatic P 134 79.959 -0.626594 0
GE.SNAA.BHZ. 2021-07-24T13:03:38.66 10.0 positive automatic PcP 178 78.4322 -1.77674 0
G.COYC.BHZ.00 2021-07-24T13:03:32.05 10.0 positive automatic P 136 78.5723 -0.185689 0.181374
G.INU.BHZ.00 2021-07-24T13:03:28.76 10.0 negative automatic P 323 78.182 -1.30657 0.185015
IU.MAJO.BHZ.00 2021-07-24T13:03:29.57 10.0 negative automatic P 325 78.5112 -3.06301 0
C.GO10.BHZ. 2021-07-24T13:03:13.98 10.0 negative automatic P 143 75.2611 0.247717 0.226266
AU.MAW.BHZ. 2021-07-24T13:03:01.08 10.0 positive automatic P 200 72.8977 1.20856 0.240603
GE.JAGI.BHZ. 2021-07-24T13:02:25.17 10.0 positive automatic P 273 67.4316 -1.35103 0.292862
AU.GIRL.BHZ.00 2021-07-24T13:01:46.15 10.0 positive automatic P 259 61.1679 0.528561 0.396931
GE.SANI.BHZ. 2021-07-24T13:01:39.57 10.0 positive automatic P 286 60.6144 -2.28795 0.186807
GE.SOEI.BHZ. 2021-07-24T13:01:24.97 10.0 positive automatic P 277 58.0711 0.446794 0.421572
AU.MORW.BHZ. 2021-07-24T13:01:17.85 10.0 positive automatic P 253 57.3764 -1.68168 0.457452
IU.MBWA.BHZ.00 2021-07-24T13:01:16.42 10.0 positive automatic P 263 57.0293 -0.646288 0.446593
IU.CASY.BHZ.00 2021-07-24T13:01:07.62 10.0 positive automatic P 208 55.8952 -1.36691 0.474492
GE.FAKI.BHZ. 2021-07-24T13:00:59.87 10.0 positive automatic P 289 54.9495 -2.35858 0.225755
AU.MTN.BHZ.00 2021-07-24T13:00:29.78 10.0 negative automatic P 278 50.684 -1.06114 0.557947
AU.KDU.BHZ.00 2021-07-24T13:00:21.20 10.0 positive automatic P 279 49.6083 -1.49494 0.525926
IU.SBA.BHZ.00 2021-07-24T13:00:16.12 10.0 negative automatic P 184 48.5898 1.19246 0.560051
GE.GENI.BHZ. 2021-07-24T13:00:15.12 10.0 positive automatic P 296 48.7935 -1.36847 0.272257
GT.VNDA.BHZ.00 2021-07-24T13:00:14.95 10.0 negative automatic P 186 48.6682 -0.589611 0.190542
AU.WRKA.BHZ.00 2021-07-24T13:00:11.35 10.0 positive automatic P 262 48.2928 -1.39556 0.6131
AU.FORT.BHZ.00 2021-07-24T13:00:00.45 10.0 negative automatic P 254 46.9001 -1.4441 0.637966
II.WRAB.BHZ.00 2021-07-24T12:59:43.90 10.0 positive automatic P 271 44.8344 -1.79212 0.667621
AU.HTT.BHZ. 2021-07-24T12:58:44.32 10.0 negative automatic P 253 37.3795 -0.333411 0.821209
IU.CTAO.BHZ.00 2021-07-24T12:58:20.30 10.0 positive automatic P 278 34.4885 0.382497 0.870802
AU.QLP.BHZ. 2021-07-24T12:58:16.50 10.0 negative automatic P 266 34.105 -0.0805388 0.792877
AU.MILA.BHZ.00 2021-07-24T12:57:33.38 10.0 positive automatic P 246 28.9434 1.98439 0.963855
G.CAN.BHZ.00 2021-07-24T12:57:32.70 10.0 negative automatic P 250 28.9848 0.956899 0.909091
NZ.KHZ.HHZ.10 2021-07-24T12:57:29.93 10.0 positive automatic S 208 14.6922 -16.1376 0
AU.EIDS.BHZ. 2021-07-24T12:57:28.15 10.0 negative automatic P 271 28.49 0.875401 0.879121
G.PPTF.BHZ.00 2021-07-24T12:57:21.45 10.0 negative automatic sP 70 27.8803 -0.484613 0.930233
AU.ARMA.BHZ. 2021-07-24T12:57:16.37 10.0 positive automatic P 261 27.0032 2.19922 0.888889
IU.SNZO.BHZ.00 2021-07-24T12:56:57.07 10.0 positive automatic S 208 13.2902 -15.0179 0
AU.LHI.BHZ.00 2021-07-24T12:56:14.63 10.0 negative automatic P 259 20.569 2.60013 0.941176
G.SANVU.BHZ.00 2021-07-24T12:56:10.15 10.0 positive automatic P 311 20.3821 -0.526094 0
ND.KOUNC.BHZ.00 2021-07-24T12:55:58.25 10.0 negative automatic P 295 19.2155 0.224902 0
NZ.ODZ.HHZ.10 2021-07-24T12:55:34.90 10.0 positive automatic P 209 18.0449 -10.3228 0
IU.RAR.BHZ.00 2021-07-24T12:55:29.30 10.0 negative automatic P 65 17.782 -13.0383 0
ND.ONTNC.BHZ.00 2021-07-24T12:55:28.85 10.0 positive automatic P 293 16.5775 0.846297 0
IU.AFI.BHZ.00 2021-07-24T12:55:21.42 10.0 negative automatic P 18 16.634 -7.28222 0
NZ.KHZ.HHZ.10 2021-07-24T12:54:50.08 10.0 negative automatic P 208 14.6922 -14.2096 0
AU.NFK.BHZ.00 2021-07-24T12:54:44.46 10.0 positive automatic P 270 13.0787 1.87733 0.943396
IU.SNZO.BHZ.00 2021-07-24T12:54:42.20 10.0 positive automatic P 208 13.2902 -3.16111 0.930233
II.MSVF.BHZ.00 2021-07-24T12:54:34.02 10.0 negative automatic P 339 12.8646 -6.42528 0
NZ.OUZ.HHZ.10 2021-07-24T12:53:52.37 10.0 positive automatic P 233 9.5495 -3.20677 0
NZ.URZ.HHZ.10 2021-07-24T12:53:47.87 10.0 positive automatic P 208 9.7263 -10.1149 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