ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of Mwp 6.0 on date 03-06-2018 and time 02:48:11 (Italy) in region Tonga Islands [Sea: Tonga]

A magnitude Mwp 6.0 earthquake occured in region: Tonga Islands [Sea: Tonga], on

  • 03-06-2018 00:48:11 (UTC)
  • 03-06-2018 02:48:11 (UTC +02:00) Italian time
  • 03-06-2018 13:48:11 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -19.23, -173.5 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.

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
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
Rev 100 mb 5.3
Mwp 6.0

Mwpd 6.0
2018-06-03
00:48:11
-19.23 -173.5 20 2018-06-03
01:09:22
Sala Sismica INGV-Roma 57477051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-06-03 00:48:11
Latitude -19.23
Longitude -173.50
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 57477051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 25574
Semi-minor axis of confidence ellipse (meter) 15696
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 160
Circular confidence region, given by single value of horizontal uncertainty (meter) 20643.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44.8732
Number of associated phases, regardless of their use for origin computation 75
Number of defining phases 75
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.64798
Epicentral distance of station closest to the epicenter (degree) 3.37465
Epicentral distance of station farthest from the epicenter (degree) 95.81338
Number of stations at which the event was observed 70
Number of stations from which data was used for origin computation 70
Magnitudes information

Mwpd:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 15
Type of magnitude Mwpd
Reference to an origin 57477051
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-06-03 01:09:22

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 16
Type of magnitude Mwp
Reference to an origin 57477051
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-06-03 01:09:22

mb:5.3

Field Value
Value 5.3
Uncertainty 0.2
Num. used stations 46
Type of magnitude mb
Reference to an origin 57477051
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-06-03 01:09:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.SCIA.BHZ.00 2018-06-03T01:01:43.30 10.0 positive automatic sP 48 95.8134 0.905945 0
US.ECSD.BHZ.00 2018-06-03T01:01:33.15 10.0 negative automatic pP 45 94.1738 -0.653228 0
US.ECSD.BHZ.00 2018-06-03T01:01:28.85 10.0 negative automatic P 45 94.1738 1.57447 0.0552266
US.KSU1.BHZ.00 2018-06-03T01:01:27.88 10.0 positive automatic sP 49 92.3737 1.28056 0
CN.INK.BHZ. 2018-06-03T01:01:18.78 10.0 positive automatic P 14 92.206 0.644495 0.0777712
GE.GSI.BHZ. 2018-06-03T01:01:06.92 10.0 positive automatic P 272 89.414 1.76161 0.0858967
GE.SNAA.BHZ. 2018-06-03T01:01:03.31 10.0 positive automatic P 177 88.8693 0.576959 0.097375
MY.KUM.BHZ. 2018-06-03T01:00:59.07 10.0 positive automatic P 276 87.8416 1.32813 0.099946
US.EGAK.BHZ.00 2018-06-03T01:00:57.53 10.0 positive automatic P 13 87.5896 0.950205 0.101651
AK.TNA.BHZ. 2018-06-03T01:00:56.71 10.0 positive automatic sP 2 84.893 5.86692 0
GT.PLCA.BHZ.00 2018-06-03T01:00:55.98 10.0 positive automatic P 132 86.8639 2.78705 0.118207
C.GO06.BHZ. 2018-06-03T01:00:55.85 10.0 negative automatic P 131 86.655 3.65114 0.117005
US.AMTX.BHZ.00 2018-06-03T01:00:55.65 10.0 positive automatic P 51 86.938 2.10575 0.10387
TM.UBPT.BHZ. 2018-06-03T01:00:54.89 10.0 negative automatic P 287 86.8342 2.00808 0.120469
IU.COLA.BHZ.00 2018-06-03T01:00:50.85 10.0 positive automatic P 11 86.3693 0.226855 0.116443
US.BOZ.BHZ.00 2018-06-03T01:00:48.50 10.0 positive automatic P 38 85.6256 1.31712 0.110627
C1.LL02.BHZ. 2018-06-03T01:00:47.38 10.0 positive automatic P 134 85.0372 3.34255 0.128092
IW.SMCO.BHZ.00 2018-06-03T01:00:47.42 10.0 positive automatic P 46 85.2048 2.01924 0.119807
IU.ANMO.BHZ.00 2018-06-03T01:00:39.17 10.0 positive automatic P 49 83.4929 2.72788 0.137371
MX.TLIG.BHZ. 2018-06-03T01:00:39.74 10.0 positive automatic sP 68 82.257 2.13681 0
US.HLID.BHZ.00 2018-06-03T01:00:35.05 10.0 positive automatic P 39 82.8411 1.98641 0.144327
US.MNTX.BHZ.00 2018-06-03T01:00:34.63 10.0 positive automatic P 53 82.7353 2.34755 0.155966
UW.BRAN.BHZ. 2018-06-03T01:00:32.40 10.0 positive automatic P 36 82.6669 0.352162 0.117435
US.BMO.BHZ.00 2018-06-03T01:00:29.40 10.0 positive automatic P 37 81.9391 1.15382 0.146872
MX.HPIG.BHZ. 2018-06-03T01:00:28.83 10.0 positive automatic sP 57 80.3012 1.4348 0
US.ELK.BHZ.00 2018-06-03T01:00:23.68 10.0 positive automatic P 41 80.7098 1.7661 0.172536
US.WVOR.BHZ.00 2018-06-03T01:00:18.08 10.0 positive automatic P 38 79.6924 1.80009 0.177871
IU.TUC.BHZ.00 2018-06-03T01:00:16.07 10.0 negative automatic P 50 79.0542 3.34978 0.179649
NN.PRN.HHZ. 2018-06-03T01:00:14.27 10.0 positive automatic P 44 78.9024 2.28943 0.160206
II.KDAK.BHZ.00 2018-06-03T01:00:12.72 10.0 positive automatic P 11 78.9523 0.690852 0.178526
BK.HUMO.BHZ.00 2018-06-03T01:00:05.90 10.0 negative automatic P 36 77.364 2.59582 0.198094
II.PFO.BHZ.00 2018-06-03T01:00:02.87 10.0 positive automatic sP 46 75.7861 0.702388 0
II.PFO.BHZ.00 2018-06-03T01:00:02.87 10.0 positive automatic P 46 75.7861 8.37425 0.206679
BK.CMB.BHZ.00 2018-06-03T00:59:56.92 10.0 positive automatic P 41 75.904 1.85164 0.210292
MY.SBM.BHZ. 2018-06-03T00:59:56.22 10.0 positive automatic P 278 76.0315 0.503753 0.204254
JP.JKA.BHZ. 2018-06-03T00:59:51.05 10.0 positive automatic PcP 327 72.7887 -2.96755 0
JP.JNU.BHZ. 2018-06-03T00:59:46.90 10.0 positive automatic P 314 74.5437 -0.310889 0.205182
JP.JSD.BHZ. 2018-06-03T00:59:38.25 10.0 positive automatic P 322 73.0045 0.133831 0.246357
JP.JMN.BHZ. 2018-06-03T00:59:38.10 10.0 positive automatic P 316 72.9149 0.442774 0.236106
JP.JTM.BHZ. 2018-06-03T00:59:38.90 10.0 positive automatic P 326 73.3526 -1.26729 0.248433
IU.MAJO.BHZ.00 2018-06-03T00:59:31.97 10.0 positive automatic P 321 72.0287 -0.377484 0.245584
JP.JGF.BHZ. 2018-06-03T00:59:30.90 10.0 positive automatic P 320 71.9144 -0.791867 0.167078
JP.JMM.BHZ. 2018-06-03T00:59:28.55 10.0 positive automatic P 323 71.4393 -0.201696 0.235907
IU.QSPA.BHZ.00 2018-06-03T00:59:25.57 10.0 positive automatic P 180 70.7137 0.740424 0.238327
GE.JAGI.BHZ. 2018-06-03T00:59:21.97 10.0 positive automatic P 268 70.6281 -1.87594 0.249599
IU.CASY.BHZ.00 2018-06-03T00:59:00.12 10.0 positive automatic P 205 66.8162 0.0617599 0.312204
AU.MORW.BHZ. 2018-06-03T00:58:41.85 10.0 negative automatic P 246 64.1483 -1.00493 0.345933
IU.MBWA.BHZ.00 2018-06-03T00:58:28.37 10.0 positive automatic P 256 62.2121 -1.61873 0.384924
GE.SOEI.BHZ. 2018-06-03T00:58:19.97 10.0 positive automatic P 269 60.7043 0.0156651 0.344028
GT.VNDA.BHZ.00 2018-06-03T00:58:12.83 10.0 positive automatic P 186 59.5286 1.08714 0.381792
IU.SBA.BHZ.00 2018-06-03T00:58:12.15 10.0 positive automatic P 185 59.3972 1.33061 0.430296
GE.FAKI.BHZ. 2018-06-03T00:57:41.27 10.0 positive automatic P 280 55.4117 -1.44204 0.468494
AU.WRKA.BHZ. 2018-06-03T00:57:29.07 10.0 positive automatic P 253 53.8341 -2.28024 0.481406
AU.FORT.BHZ. 2018-06-03T00:57:26.00 10.0 positive automatic P 245 53.6226 -2.72601 0.501713
AU.KDU.BHZ. 2018-06-03T00:57:17.07 10.0 positive automatic P 269 52.1642 -1.86684 0.524882
AU.HTT.BHZ. 2018-06-03T00:56:17.57 10.0 negative automatic P 241 44.5201 -2.52569 0.647261
AU.COEN.BHZ. 2018-06-03T00:55:55.97 10.0 positive automatic P 270 41.753 -1.67564 0.666283
AU.TOO.BHZ. 2018-06-03T00:55:41.47 10.0 negative automatic P 234 40.045 -2.14979 0.729069
AU.QLP.BHZ. 2018-06-03T00:55:36.07 10.0 negative automatic P 251 39.4434 -2.47766 0.71548
IU.CTAO.BHZ.00 2018-06-03T00:55:22.57 10.0 positive automatic P 262 37.8186 -2.36133 0.80922
G.CAN.BHZ.00 2018-06-03T00:55:14.10 10.0 negative automatic P 236 36.7182 -1.55499 0.757794
AU.ARMA.BHZ. 2018-06-03T00:54:45.92 10.0 negative automatic P 244 33.4072 -1.27339 0.859376
AU.EIDS.BHZ. 2018-06-03T00:54:43.77 10.0 positive automatic P 253 33.2417 -1.81993 0.893945
NZ.ODZ.HHZ.10 2018-06-03T00:54:13.18 10.0 positive automatic P 203 28.9748 5.17561 0.980392
ND.KOUNC.BHZ.00 2018-06-03T00:52:54.14 10.0 negative automatic P 263 20.9172 3.08981 0.952381
NZ.URZ.HHZ.10 2018-06-03T00:52:46.79 10.0 positive automatic P 201 20.7056 -1.97318 0.952381
NZ.OUZ.HHZ.10 2018-06-03T00:52:36.68 10.0 negative automatic P 213 19.6408 -0.501112 0.980392
ND.ONTNC.BHZ.00 2018-06-03T00:52:32.00 10.0 negative automatic P 257 18.9819 2.02697 0.930233
G.DZM.BHZ.00 2018-06-03T00:52:30.00 10.0 positive automatic P 258 18.9695 0.0281977 0.930233
ND.MARNC.BHZ.00 2018-06-03T00:52:12.44 10.0 positive automatic P 259 17.4539 0.427316 0.8
II.MSVF.BHZ.00 2018-06-03T00:50:12.52 10.0 negative automatic P 279 8.1501 5.44233 0.769231
AU.NIUE.BHZ. 2018-06-03T00:48:57.65 10.0 positive automatic P 88 3.3747 -3.71634 0.97561
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