Earthquake with magnitude of Mwp 6.4 on date 06-03-2021 and time 01:16:24 (Italy) in region Off east coast of North Island, New Zealand [Sea: New Zealand]

A magnitude Mwp 6.4 earthquake occured in region: Off east coast of North Island, New Zealand [Sea: New Zealand], on

  • 06-03-2021 00:16:24 (UTC)
  • 06-03-2021 01:16:24 (UTC +01:00) Italian time
  • 06-03-2021 13:16:24 (UTC +13:00) local time in the region of the earthquake (Pacific/Auckland)

and geographic coordinates (lat, lon) -37.51, 179.43 at 10 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 6.4

Mwpd 6.6
2021-03-06
00:16:24
-37.51 179.43 10 2021-03-06
00:40:37
Sala Sismica INGV-Roma 87799861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-06 00:16:24
Latitude -37.51
Longitude 179.43
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 87799861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 24434
Semi-minor axis of confidence ellipse (meter) 15341
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 134
Circular confidence region, given by single value of horizontal uncertainty (meter) 19722.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54.368
Number of associated phases, regardless of their use for origin computation 69
Number of defining phases 69
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.30185
Epicentral distance of station closest to the epicenter (degree) 1.97679
Epicentral distance of station farthest from the epicenter (degree) 104.62939
Number of stations at which the event was observed 66
Number of stations from which data was used for origin computation 66
Magnitudes information

Mwpd:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 37
Type of magnitude Mwpd
Reference to an origin 87799861
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-06 00:40:37

Mwp:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 38
Type of magnitude Mwp
Reference to an origin 87799861
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-06 00:40:37

mb:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 52
Type of magnitude mb
Reference to an origin 87799861
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-03-06 00:40:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AU.FORT.BHZ.00 2021-03-06T00:30:42.23 10.0 negative automatic S 263 42.5166 3.1798 0
IU.TRIS.BHZ.00 2021-03-06T00:30:15.45 10.0 positive automatic Pdiff 170 104.6294 -12.9884 0
GT.LPAZ.BHZ.00 2021-03-06T00:29:55.23 10.0 negative automatic P 117 96.8798 0.538662 0.0535573
US.TPNV.BHZ.00 2021-03-06T00:29:46.25 10.0 positive automatic P 46 95.2361 -0.401054 0.0563263
IN.PBA.HHZ. 2021-03-06T00:29:44.98 10.0 positive automatic PcP 281 94.4749 1.68137 0
IU.CHTO.BHZ.00 2021-03-06T00:29:40.00 10.0 positive automatic P 291 94.1391 -0.426301 0.0663392
BK.CMB.BHZ.00 2021-03-06T00:29:38.25 10.0 positive automatic P 43 93.6962 -1.18656 0.0630161
RM.SLV.BHZ. 2021-03-06T00:29:31.82 10.0 negative automatic P 296 92.0995 -0.236056 0.0624502
II.NNA.BHZ.00 2021-03-06T00:29:37.67 10.0 negative automatic P 108 93.3026 0.0701732 0
II.PFO.BHZ.00 2021-03-06T00:29:36.02 10.0 negative automatic P 49 92.7858 0.676491 0.0742461
AK.ATKA.BHZ. 2021-03-06T00:29:22.03 10.0 negative automatic P 4 89.8815 0.376132 0.0897942
C.GO03.BHZ. 2021-03-06T00:29:13.15 10.0 negative automatic P 124 87.8335 1.01881 0.106975
IU.LCO.BHZ.00 2021-03-06T00:29:06.92 10.0 negative automatic P 125 86.5836 0.57927 0.118945
WA.ZON.HHZ. 2021-03-06T00:29:05.06 10.0 negative automatic P 128 86.179 0.969384 0.117598
C.GO04.BHZ. 2021-03-06T00:29:02.43 10.0 negative automatic P 125 85.7482 0.235381 0.0634848
C1.CO02.BHZ. 2021-03-06T00:28:58.90 10.0 negative automatic P 126 84.9362 0.925249 0.131957
GE.GSI.BHZ. 2021-03-06T00:28:54.47 10.0 negative automatic P 276 84.3422 -0.32315 0.127693
G.PEL.BHZ.00 2021-03-06T00:28:53.30 10.0 negative automatic P 128 83.8601 0.863371 0.137545
C1.BO02.BHZ. 2021-03-06T00:28:46.97 10.0 positive automatic P 129 82.7058 0.457479 0.147146
JP.JGF.BHZ. 2021-03-06T00:28:45.20 10.0 negative automatic P 327 82.8605 -2.06458 0.136328
C.GO05.BHZ. 2021-03-06T00:28:42.63 10.0 negative automatic P 128 81.8511 0.717757 0.145975
C.GO06.BHZ. 2021-03-06T00:28:28.68 10.0 negative automatic P 132 79.1617 1.00962 0.180745
GT.PLCA.BHZ.00 2021-03-06T00:28:27.28 10.0 positive automatic P 133 78.9527 0.793537 0.178521
II.EFI.BHZ.00 2021-03-06T00:28:20.80 10.0 positive automatic P 148 77.6775 1.53096 0.197331
C1.LL02.BHZ. 2021-03-06T00:28:14.30 10.0 positive automatic P 135 76.6333 0.855424 0.207813
G.COYC.BHZ.00 2021-03-06T00:28:05.65 10.0 negative automatic P 137 74.9999 1.55909 0.224755
MY.SBM.BHZ. 2021-03-06T00:27:55.62 10.0 negative automatic P 286 73.6853 -0.816018 0.228015
MY.KKM.BHZ. 2021-03-06T00:27:51.27 10.0 negative automatic P 292 73.0568 -1.55966 0.245775
GE.SNAA.BHZ. 2021-03-06T00:27:40.66 10.0 positive automatic P 179 70.8026 1.35738 0.215021
AU.MAW.BHZ. 2021-03-06T00:27:03.20 10.0 negative automatic P 202 64.6648 2.74816 0
GE.JAGI.BHZ. 2021-03-06T00:27:02.62 10.0 positive automatic P 279 65.2994 -1.98833 0.302981
GE.LUWI.BHZ. 2021-03-06T00:26:51.22 10.0 positive automatic P 291 63.446 -1.21765 0.305383
II.KAPI.BHZ.00 2021-03-06T00:26:49.65 10.0 positive automatic P 285 63.1142 -0.645706 0.377003
GE.SANI.BHZ. 2021-03-06T00:26:29.37 10.0 positive automatic P 293 60.3956 -2.55878 0.387293
GE.MMRI.BHZ. 2021-03-06T00:26:20.47 10.0 positive automatic P 284 58.909 -1.23 0.351758
AU.GIRL.BHZ.00 2021-03-06T00:26:10.35 10.0 positive automatic P 265 57.2072 0.578238 0.452306
GE.SOEI.BHZ. 2021-03-06T00:26:06.72 10.0 negative automatic P 284 56.6464 0.766752 0.450043
GE.FAKI.BHZ. 2021-03-06T00:25:53.32 10.0 positive automatic P 297 55.2844 -2.72404 0.49336
IU.MBWA.BHZ.00 2021-03-06T00:25:42.27 10.0 positive automatic P 270 53.6239 -1.71052 0.507661
AU.MORW.BHZ. 2021-03-06T00:25:35.90 10.0 negative automatic P 259 52.6675 -1.05885 0.529278
IU.NWAO.BHZ.00 2021-03-06T00:25:16.52 10.0 negative automatic P 255 50.0846 -1.08348 0.572286
AU.MTN.BHZ.00 2021-03-06T00:25:12.25 10.0 negative automatic P 287 49.4656 -0.60481 0.56913
AU.KDU.BHZ.00 2021-03-06T00:25:05.58 10.0 negative automatic P 288 48.5499 -0.239438 0.605939
AU.WRKA.BHZ.00 2021-03-06T00:24:35.10 10.0 negative automatic P 271 44.8691 -1.98298 0.224118
II.WRAB.BHZ.00 2021-03-06T00:24:18.35 10.0 positive automatic P 281 42.7533 -1.67303 0.137392
AU.FORT.BHZ.00 2021-03-06T00:24:17.25 10.0 negative automatic P 263 42.5166 -0.815748 0.707977
AU.COEN.BHZ. 2021-03-06T00:23:56.62 10.0 negative automatic P 296 39.8548 0.426679 0.724227
G.PPTF.BHZ.00 2021-03-06T00:23:04.50 10.0 positive automatic P 62 33.682 0.802769 0.853763
IU.CTAO.BHZ.00 2021-03-06T00:23:03.42 10.0 negative automatic P 292 33.6219 0.305002 0.298898
AU.HTT.BHZ. 2021-03-06T00:22:58.47 10.0 negative automatic P 265 32.9846 0.850736 0.910371
IU.HNR.BHZ.00 2021-03-06T00:22:57.67 10.0 positive automatic P 323 33.116 -0.98925 0.855385
AU.QLP.BHZ. 2021-03-06T00:22:45.70 10.0 positive automatic P 280 31.5469 0.774322 0.930261
AU.EIDS.BHZ. 2021-03-06T00:22:04.47 10.0 negative automatic P 289 26.9134 0.720743 0.930233
II.TAU.BHZ.00 2021-03-06T00:21:49.02 10.0 positive automatic P 247 24.9455 3.10256 0.833333
G.CAN.BHZ.00 2021-03-06T00:21:44.55 10.0 positive automatic P 266 24.4802 2.7701 0.43956
IU.AFI.BHZ.00 2021-03-06T00:21:44.12 10.0 negative automatic P 21 24.8648 -1.16166 0.879121
AU.MILA.BHZ.00 2021-03-06T00:21:41.13 10.0 positive automatic P 262 23.9859 3.84817 0.952381
AU.ARMA.BHZ. 2021-03-06T00:21:40.77 10.0 positive automatic P 279 24.0197 3.12648 0.930233
AU.MCQ.BHZ.00 2021-03-06T00:21:20.80 10.0 positive automatic P 213 21.9847 4.19676 0.930233
ND.KOUNC.BHZ.00 2021-03-06T00:21:12.05 10.0 positive automatic P 318 21.4527 1.14257 0.869565
AU.NIUE.BHZ. 2021-03-06T00:21:01.47 10.0 negative automatic P 30 20.6443 -0.7114 0.952381
II.MSVF.BHZ.00 2021-03-06T00:20:51.07 10.0 negative automatic P 356 19.8029 -2.08371 0.909091
NZ.ODZ.HHZ.10 2021-03-06T00:20:31.68 10.0 negative automatic S 218 10.003 -5.67141 0
NZ.ODZ.HHZ.10 2021-03-06T00:18:41.30 10.0 negative automatic P 218 10.003 -4.96598 0.492611
NZ.KHZ.HHZ.10 2021-03-06T00:17:55.03 10.0 negative automatic P 221 6.6618 -5.36984 0.492611
NZ.OUZ.HHZ.10 2021-03-06T00:17:41.88 10.0 positive automatic P 294 5.2238 1.24092 0.231481
IU.SNZO.BHZ.00 2021-03-06T00:17:37.52 10.0 negative automatic P 222 5.265 -3.70203 0.952381
NZ.URZ.HHZ.10 2021-03-06T00:16:57.08 10.0 negative automatic P 247 1.9768 1.07095 0.155763
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download