Earthquake with magnitude of Mwp 6.1 on date 08-01-2021 and time 00:28:43 (UTC) in region Kermadec Islands, New Zealand [Sea: New Zealand]

A magnitude Mwp 6.1 earthquake occured in region: Kermadec Islands, New Zealand [Sea: New Zealand], on

  • 08-01-2021 00:28:43 (UTC)
  • 08-01-2021 01:28:43 (UTC +01:00) Italian time
  • 08-01-2021 13:28:43 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -29.594, -178.666 at 151 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 5.5
Mwp 6.1

Mwpd 6.2
2021-01-08
00:28:43
-29.5945 -178.666 151 2021-01-08
00:43:22
Sala Sismica INGV-Roma 86082481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-08 00:28:43
Latitude -29.5945
Longitude -178.6660
Depth (km) 151 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 86082481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12148
Semi-minor axis of confidence ellipse (meter) 5176
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 10640
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64.7777
Number of associated phases, regardless of their use for origin computation 67
Number of defining phases 67
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.66913
Epicentral distance of station closest to the epicenter (degree) 9.34479
Epicentral distance of station farthest from the epicenter (degree) 81.99639
Number of stations at which the event was observed 53
Number of stations from which data was used for origin computation 53
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 31
Type of magnitude Mwp
Reference to an origin 86082481
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-08 00:43:22

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 25
Type of magnitude Mwpd
Reference to an origin 86082481
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-08 00:43:22

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 40
Type of magnitude mb
Reference to an origin 86082481
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-08 00:43:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
G.AIS.BHZ.00 2021-01-08T00:40:45.60 10.0 positive automatic P 231 81.9964 0.329137 0.153206
IU.ADK.BHZ.00 2021-01-08T00:40:38.22 10.0 positive automatic P 1 81.4918 -4.42341 0
G.COYC.BHZ.00 2021-01-08T00:40:35.40 10.0 positive automatic P 137 79.6877 2.34149 0.177913
GE.SNAA.BHZ. 2021-01-08T00:40:28.56 10.0 negative automatic P 179 78.6889 0.821027 0.174939
ND.KOUNC.BHZ.00 2021-01-08T00:40:25.95 10.0 positive automatic ScP 297 17.8626 -2.99152 0
C1.MG02.BHZ. 2021-01-08T00:40:23.50 10.0 positive automatic P 144 77.3926 3.04145 0.202576
IU.MAJO.BHZ.00 2021-01-08T00:40:17.32 10.0 positive automatic P 326 77.5373 -4.0006 0.173882
G.INU.BHZ.00 2021-01-08T00:40:16.26 10.0 positive automatic P 324 77.1812 -3.03173 0.18469
JP.JGF.BHZ. 2021-01-08T00:40:16.10 10.0 positive automatic P 325 77.2158 -3.46198 0.18847
JP.JSG.BHZ. 2021-01-08T00:40:10.35 10.0 negative automatic P 325 76.0686 -2.68876 0.138015
JP.JOW.BHZ. 2021-01-08T00:40:09.45 10.0 negative automatic P 313 75.9136 -2.73151 0.0993217
JP.JHJ2.BHZ. 2021-01-08T00:39:57.80 10.0 negative automatic P 325 74.0056 -3.41208 0.108643
AU.MAW.BHZ. 2021-01-08T00:39:53.23 10.0 negative automatic P 201 72.6166 0.157996 0.22887
GE.JAGI.BHZ. 2021-01-08T00:39:10.02 10.0 negative automatic P 274 66.0261 -2.56624 0.301009
GE.LUWI.BHZ. 2021-01-08T00:38:47.02 10.0 negative automatic P 286 62.4533 -2.27397 0.310491
AU.GIRL.BHZ.00 2021-01-08T00:38:31.70 10.0 negative automatic P 260 59.8382 -0.00933826 0.369686
GE.SANI.BHZ. 2021-01-08T00:38:24.72 10.0 negative automatic P 287 59.2148 -2.69959 0.394509
GE.SOEI.BHZ. 2021-01-08T00:38:09.52 10.0 negative automatic P 278 56.6596 -0.286292 0.394765
AU.MORW.BHZ. 2021-01-08T00:38:03.92 10.0 positive automatic P 253 56.1077 -1.84857 0.410333
IU.MBWA.BHZ.00 2021-01-08T00:38:01.20 10.0 negative automatic P 263 55.6704 -1.44824 0.481386
IU.CASY.BHZ.00 2021-01-08T00:37:59.92 10.0 negative automatic P 207 55.4438 -1.07523 0.372671
IU.NWAO.BHZ.00 2021-01-08T00:37:49.55 10.0 negative automatic P 249 54.0314 -1.35003 0.478423
AU.FITZ.BHZ. 2021-01-08T00:37:33.18 10.0 negative automatic P 270 51.7357 -0.841767 0.513657
IU.WAKE.BHZ.00 2021-01-08T00:37:24.37 10.0 negative automatic P 342 50.8839 -3.29653 0.354048
IU.SBA.BHZ.00 2021-01-08T00:37:15.30 10.0 positive automatic P 184 48.7034 4.08619 0.610691
GT.VNDA.BHZ.00 2021-01-08T00:37:13.95 10.0 negative automatic P 186 48.7459 2.40631 0.59524
AU.MTN.BHZ.00 2021-01-08T00:37:13.75 10.0 negative automatic P 279 49.2721 -1.79654 0.546646
AU.KDU.BHZ.00 2021-01-08T00:37:04.40 10.0 positive automatic P 280 48.1966 -2.9266 0.612164
GE.GENI.BHZ. 2021-01-08T00:36:59.72 10.0 negative automatic P 297 47.4458 -1.83585 0.545647
AU.WRKA.BHZ.00 2021-01-08T00:36:56.30 10.0 negative automatic P 262 46.9417 -1.45295 0.605018
AU.FORT.BHZ.00 2021-01-08T00:36:46.60 10.0 negative automatic P 254 45.6156 -0.725197 0.642925
II.WRAB.BHZ.00 2021-01-08T00:36:29.25 10.0 negative automatic P 272 43.4346 -0.821381 0.699173
NZ.ODZ.HHZ.10 2021-01-08T00:35:42.89 10.0 negative automatic S 206 17.5967 -7.9864 0
AU.RABL.BHZ.00 2021-01-08T00:35:37.93 10.0 negative automatic P 307 37.5012 -3.41075 0.689538
IU.AFI.BHZ.00 2021-01-08T00:35:32.25 10.0 positive automatic S 24 16.9278 -5.08273 0
AU.HTT.BHZ. 2021-01-08T00:35:30.27 10.0 positive automatic P 253 36.1116 0.61098 0.824154
IU.CTAO.BHZ.00 2021-01-08T00:35:04.57 10.0 negative automatic P 279 33.0768 1.04167 0.856181
AU.QLP.BHZ. 2021-01-08T00:35:01.40 10.0 negative automatic P 266 32.7291 0.917179 0.798964
IU.TARA.BHZ.00 2021-01-08T00:34:50.32 10.0 negative automatic P 344 31.9745 -3.54786 0.694958
II.TAU.BHZ.00 2021-01-08T00:34:40.37 10.0 positive automatic P 235 30.213 1.95274 0.865507
G.PPTF.BHZ.00 2021-01-08T00:34:30.55 10.0 positive automatic P 72 29.131 1.58446 0.952381
NZ.KHZ.HHZ.10 2021-01-08T00:34:27.29 10.0 negative automatic S 204 14.272 -7.31848 0
AU.MILA.BHZ.00 2021-01-08T00:34:19.45 10.0 negative automatic P 246 27.7553 2.66514 0.720721
G.CAN.BHZ.00 2021-01-08T00:34:19.90 10.0 negative automatic P 250 27.7504 3.1736 0.952381
AU.EIDS.BHZ. 2021-01-08T00:34:12.17 10.0 negative automatic P 272 27.0903 1.40202 0.963855
AU.RIV.BHZ. 2021-01-08T00:34:04.27 10.0 negative automatic P 253 25.9217 4.01183 0.898876
AU.ARMA.BHZ. 2021-01-08T00:34:01.82 10.0 negative automatic P 261 25.6619 3.71332 0.963855
AU.NIUE.BHZ. 2021-01-08T00:33:59.52 10.0 positive automatic S 39 13.1796 -8.84524 0
IU.SNZO.BHZ.00 2021-01-08T00:33:55.80 10.0 positive automatic S 203 12.8883 -5.56379 0
IU.RAR.BHZ.00 2021-01-08T00:32:53.97 10.0 positive automatic P 68 18.9763 2.0404 0.879121
G.SANVU.BHZ.00 2021-01-08T00:32:53.70 10.0 negative automatic P 314 19.2111 -0.781022 0.43956
ND.KOUNC.BHZ.00 2021-01-08T00:32:43.40 10.0 negative automatic P 297 17.8626 3.59335 0.851064
NZ.ODZ.HHZ.10 2021-01-08T00:32:36.27 10.0 positive automatic P 206 17.5967 -0.65686 0.970874
IU.AFI.BHZ.00 2021-01-08T00:32:26.45 10.0 negative automatic P 24 16.9278 -3.21554 0.963855
NZ.KHZ.HHZ.10 2021-01-08T00:31:53.54 10.0 negative automatic P 204 14.272 -3.87196 0.980392
AU.NIUE.BHZ. 2021-01-08T00:31:44.15 10.0 negative automatic P 39 13.1796 0.559762 0.930233
IU.SNZO.BHZ.00 2021-01-08T00:31:35.85 10.0 positive automatic P 203 12.8883 -4.01321 0.963855
II.MSVF.BHZ.00 2021-01-08T00:31:34.87 10.0 negative automatic P 345 12.2223 3.48414 0.930233
NZ.URZ.HHZ.10 2021-01-08T00:30:53.48 10.0 positive automatic P 201 9.3448 0.041986 0.970874
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