Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.3 on date 06-01-2021 and time 07:20:34 (Italy) in region New Zealand [Sea]

A magnitude Mwp 6.3 earthquake occured in region: New Zealand [Sea], on

  • 06-01-2021 06:20:34 (UTC)
  • 06-01-2021 07:20:34 (UTC +01:00) Italian time
  • 06-01-2021 19:20:34 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -28.8770, -177.1640 at 20 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 5.4
Mwp 6.3
Mwpd 6.5 		2021-01-06
06:20:34		 -28.8773 -177.164 20 2021-01-06
06:44:11		 Sala Sismica INGV-Roma 86044721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-06 06:20:34
Latitude -28.8773
Longitude -177.1640
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 86044721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 27733
Semi-minor axis of confidence ellipse (meter) 15657
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 133
Circular confidence region, given by single value of horizontal uncertainty (meter) 22816.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116.436
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.92188
Epicentral distance of station closest to the epicenter (degree) 0.76342
Epicentral distance of station farthest from the epicenter (degree) 68.50438
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.2
Num. used stations 13
Type of magnitude Mwpd
Reference to an origin 86044721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-06 06:44:11

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 14
Type of magnitude Mwp
Reference to an origin 86044721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-06 06:44:11

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 25
Type of magnitude mb
Reference to an origin 86044721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-01-06 06:44:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.BKB.BHZ. 2021-01-06T06:31:33.62 10.0 positive automatic P 281 68.5044 -0.214499 0
GE.JAGI.BHZ. 2021-01-06T06:31:23.77 10.0 positive automatic P 273 67.2932 -2.4465 0.24855
II.KAPI.BHZ.00 2021-01-06T06:31:03.77 10.0 positive automatic P 279 64.0796 -1.73652 0.310694
AU.GIRL.BHZ.00 2021-01-06T06:30:47.10 10.0 negative automatic P 259 61.2615 0.423977 0.403125
GE.SANI.BHZ. 2021-01-06T06:30:37.27 10.0 positive automatic P 286 60.2732 -2.66988 0.263293
GE.SOEI.BHZ. 2021-01-06T06:30:23.57 10.0 positive automatic P 277 57.8667 0.143022 0.387157
AU.MORW.BHZ. 2021-01-06T06:30:19.67 10.0 positive automatic P 252 57.5730 -1.56777 0.446835
IU.MBWA.BHZ.00 2021-01-06T06:30:16.32 10.0 positive automatic P 262 57.0602 -1.27847 0.449167
IU.CASY.BHZ.00 2021-01-06T06:30:15.22 10.0 positive automatic P 207 56.6834 0.32752 0.460198
IU.NWAO.BHZ.00 2021-01-06T06:30:06.20 10.0 positive automatic P 248 55.5140 -0.399404 0.436495
G.KIP.BHZ.00 2021-01-06T06:29:51.95 10.0 negative automatic P 22 53.5788 -0.547825 0.520778
AU.FITZ.BHZ. 2021-01-06T06:29:47.33 10.0 positive automatic P 268 53.0593 -1.35042 0.46171
AU.MTN.BHZ.00 2021-01-06T06:29:27.80 10.0 positive automatic P 277 50.4707 -1.55837 0.258007
GT.VNDA.BHZ.00 2021-01-06T06:29:26.43 10.0 negative automatic P 186 49.5890 3.76095 0.580731
IU.SBA.BHZ.00 2021-01-06T06:29:26.67 10.0 positive automatic sP 184 49.5150 4.57975 0.542761
AU.WRKA.BHZ.00 2021-01-06T06:29:11.40 10.0 positive automatic P 261 48.3430 -1.79542 0.609579
AU.FORT.BHZ.00 2021-01-06T06:29:01.83 10.0 negative automatic P 253 47.0734 -1.44257 0.632164
II.WRAB.BHZ.00 2021-01-06T06:28:43.67 10.0 positive automatic P 270 44.7333 -1.17261 0.658801
AU.HTT.BHZ. 2021-01-06T06:27:46.35 10.0 positive automatic P 252 37.5788 0.276009 0.804284
IU.CTAO.BHZ.00 2021-01-06T06:27:18.85 10.0 positive automatic P 276 34.2829 1.06828 0.871985
AU.QLP.BHZ. 2021-01-06T06:27:16.15 10.0 positive automatic P 264 34.0946 0.0315427 0.705851
AU.MILA.BHZ.00 2021-01-06T06:26:35.73 10.0 negative automatic P 245 29.2455 2.12304 0.930233
G.CAN.BHZ.00 2021-01-06T06:26:35.60 10.0 positive automatic P 249 29.2308 2.14365 0.930233
AU.EIDS.BHZ. 2021-01-06T06:26:26.00 10.0 positive automatic P 270 28.3939 1.06009 0.43956
AU.ARMA.BHZ. 2021-01-06T06:26:17.27 10.0 positive automatic P 259 27.0788 2.94772 0.930233
IU.SNZO.BHZ.00 2021-01-06T06:26:16.27 10.0 negative automatic S 206 14.0833 -9.48469 0
G.SANVU.BHZ.00 2021-01-06T06:25:00.65 10.0 positive automatic P 310 19.7060 -0.342734 0.43956
ND.KOUNC.BHZ.00 2021-01-06T06:24:55.20 10.0 positive automatic P 292 18.7620 -0.963829 0
NZ.ODZ.HHZ.10 2021-01-06T06:24:49.64 10.0 positive automatic P 208 18.8254 -1.75502 0.980392
IU.RAR.BHZ.00 2021-01-06T06:24:35.05 10.0 negative automatic P 68 17.4925 -0.552071 0.869565
ND.MARNC.BHZ.00 2021-01-06T06:24:14.45 10.0 positive automatic P 296 15.2848 -3.22552 0
NZ.KHZ.HHZ.10 2021-01-06T06:24:03.92 10.0 positive automatic P 207 15.4802 -6.09733 0.980392
II.MSVF.BHZ.00 2021-01-06T06:23:25.42 10.0 negative automatic P 337 11.9635 3.0035 0.909091
NZ.URZ.HHZ.10 2021-01-06T06:22:57.98 10.0 positive automatic P 205 10.5204 -4.57375 0.985222
IU.RAO.BHZ.00 2021-01-06T06:20:51.70 10.0 negative automatic P 241 0.7634 4.24815 0.963855
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