INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Mwp 6.3 on date 10-11-2018 and time 09:33:18 (Italy) in region Tonga Islands [Sea: Tonga]

A magnitude Mwp 6.3 earthquake occured in region: Tonga Islands [Sea: Tonga], on

  • 10-11-2018 08:33:18 (UTC)
  • 10-11-2018 09:33:18 (UTC +01:00) Italian time
  • 10-11-2018 21:33:18 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -20.5, -173.96 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
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 5.4
Mwp 6.3

Mwpd 6.4
2018-11-10
08:33:18
-20.5 -173.96 10 2018-11-10
08:50:22
Sala Sismica INGV-Roma 62962751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-10 08:33:18
Latitude -20.50
Longitude -173.96
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 62962751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 22933
Semi-minor axis of confidence ellipse (meter) 14697
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 153
Circular confidence region, given by single value of horizontal uncertainty (meter) 18511.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42.9561
Number of associated phases, regardless of their use for origin computation 99
Number of defining phases 99
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.00983
Epicentral distance of station closest to the epicenter (degree) 4.04652
Epicentral distance of station farthest from the epicenter (degree) 97.6299
Number of stations at which the event was observed 97
Number of stations from which data was used for origin computation 97
Magnitudes information

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 57
Type of magnitude Mwp
Reference to an origin 62962751
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-11-10 08:50:22

Mwpd:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 56
Type of magnitude Mwpd
Reference to an origin 62962751
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-11-10 08:50:22

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 83
Type of magnitude mb
Reference to an origin 62962751
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-11-10 08:50:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.AGMN.BHZ.00 2018-11-10T08:46:51.45 10.0 negative automatic P 41 97.6299 0.114726 0.0463807
US.ECSD.BHZ.00 2018-11-10T08:46:41.40 10.0 positive automatic P 45 95.3739 0.277154 0.0581612
CN.INK.BHZ. 2018-11-10T08:46:32.00 10.0 positive automatic P 14 93.538 -0.623181 0.073202
II.JTS.BHZ.00 2018-11-10T08:46:32.37 10.0 negative automatic PcP 80 92.6612 3.04293 0
US.DGMT.BHZ.00 2018-11-10T08:46:30.03 10.0 positive automatic P 39 92.7046 1.13263 0.0738767
CU.TGUH.BHZ.00 2018-11-10T08:46:27.10 10.0 positive automatic P 76 91.8555 2.0465 0.0731375
IU.LCO.BHZ.00 2018-11-10T08:46:26.37 10.0 positive automatic P 122 91.0273 4.96203 0.0832506
US.WMOK.BHZ.00 2018-11-10T08:46:23.70 10.0 positive automatic P 53 90.1423 6.71721 0.0850433
C.GO04.BHZ. 2018-11-10T08:46:23.25 10.0 positive automatic P 123 90.4725 4.45166 0.0877735
US.LAO.BHZ.00 2018-11-10T08:46:20.83 10.0 positive automatic P 39 90.6428 1.44273 0.0847235
IU.RSSD.BHZ.00 2018-11-10T08:46:20.17 10.0 positive automatic P 42 90.7342 0.157857 0.085104
C1.BO02.BHZ. 2018-11-10T08:46:13.00 10.0 positive automatic P 127 88.593 4.20577 0.0949468
GE.GSI.BHZ. 2018-11-10T08:46:13.67 10.0 positive automatic P 272 89.0198 2.00805 0.0985941
US.EGAK.BHZ.00 2018-11-10T08:46:11.08 10.0 positive automatic P 13 88.9204 -0.15199 0.0981422
US.RLMT.BHZ.00 2018-11-10T08:46:08.55 10.0 negative automatic P 40 88.0207 1.26307 0.108146
MY.KUM.BHZ. 2018-11-10T08:46:06.22 10.0 positive automatic P 277 87.5556 1.49918 0.106513
GE.SNAA.BHZ. 2018-11-10T08:46:06.91 10.0 positive automatic P 177 87.6267 1.71673 0.108473
US.JCT.BHZ.00 2018-11-10T08:46:05.13 10.0 positive automatic P 56 87.5407 0.387135 0.051552
GT.PLCA.BHZ.00 2018-11-10T08:46:03.40 10.0 positive automatic P 132 86.3302 4.48091 0.118092
IU.COLA.BHZ.00 2018-11-10T08:46:03.07 10.0 negative automatic P 11 87.6928 -2.33096 0.109264
US.BOZ.BHZ.00 2018-11-10T08:46:02.23 10.0 positive automatic P 38 86.8862 0.488263 0.106488
C.GO06.BHZ. 2018-11-10T08:46:02.08 10.0 negative automatic P 131 86.15 4.01385 0.119461
US.SDCO.BHZ.00 2018-11-10T08:46:01.63 10.0 positive automatic P 47 86.6897 0.681816 0.106699
US.BW06.BHZ.00 2018-11-10T08:46:00.60 10.0 positive automatic P 42 86.5902 0.203997 0.11613
US.MSO.BHZ.00 2018-11-10T08:45:58.28 10.0 positive automatic P 36 86.2733 -0.400762 0.113255
AT.SKAG.BHZ. 2018-11-10T08:45:57.74 10.0 positive automatic P 19 85.9662 0.781385 0.123743
US.AHID.BHZ.00 2018-11-10T08:45:56.20 10.0 positive automatic P 41 85.6372 0.554451 0.11924
MX.TLIG.BHZ. 2018-11-10T08:45:45.32 10.0 positive automatic P 68 83.1256 2.55563 0.131395
US.NEW.BHZ.00 2018-11-10T08:45:54.18 10.0 positive automatic P 34 85.4157 -0.156092 0.123683
C1.LL02.BHZ. 2018-11-10T08:45:53.68 10.0 negative automatic P 134 84.4632 4.19444 0.124008
US.WRAK.BHZ.00 2018-11-10T08:45:52.50 10.0 negative automatic P 22 84.5059 2.85422 0.130797
US.HWUT.BHZ.00 2018-11-10T08:45:51.40 10.0 positive automatic P 42 84.7119 0.411873 0.133781
IU.MA2.BHZ.00 2018-11-10T08:45:51.22 10.0 positive automatic P 343 85.1018 -1.47047 0.127581
AT.TTA.BHZ. 2018-11-10T08:45:50.18 10.0 positive automatic P 8 84.6169 -0.186021 0.133289
US.MVCO.BHZ.00 2018-11-10T08:45:49.80 10.0 negative automatic P 47 84.363 0.513365 0.13829
US.HLID.BHZ.00 2018-11-10T08:45:48.90 10.0 positive automatic P 39 84.0973 1.03696 0.140516
US.MNTX.BHZ.00 2018-11-10T08:45:47.98 10.0 positive automatic P 53 83.8443 1.63788 0.136094
US.DUG.BHZ.00 2018-11-10T08:45:43.63 10.0 positive automatic P 42 83.1414 0.71788 0.141837
US.BMO.BHZ.00 2018-11-10T08:45:43.43 10.0 positive automatic P 37 83.2125 0.209108 0.148058
US.HAWA.BHZ.00 2018-11-10T08:45:42.45 10.0 positive automatic P 34 82.9686 0.628233 0.148383
AU.MAW.BHZ. 2018-11-10T08:45:42.44 10.0 positive automatic P 199 82.6164 2.50866 0.138258
US.ELK.BHZ.00 2018-11-10T08:45:37.55 10.0 positive automatic P 41 81.9497 0.729246 0.15012
US.WUAZ.BHZ.00 2018-11-10T08:45:36.10 10.0 positive automatic P 47 81.504 1.73375 0.157486
US.NLWA.BHZ.00 2018-11-10T08:45:34.28 10.0 positive automatic P 32 81.4171 0.532206 0.156428
MX.HPIG.BHZ. 2018-11-10T08:45:34.68 10.0 positive automatic P 57 81.3536 1.08337 0.142262
US.WVOR.BHZ.00 2018-11-10T08:45:32.03 10.0 positive automatic P 38 80.9561 0.613844 0.164225
IU.TUC.BHZ.00 2018-11-10T08:45:29.22 10.0 positive automatic P 50 80.1991 1.94545 0.175222
NN.PRN.HHZ. 2018-11-10T08:45:28.53 10.0 positive automatic P 44 80.116 1.60889 0.167526
II.KDAK.BHZ.00 2018-11-10T08:45:27.02 10.0 positive automatic P 11 80.2778 -0.548957 0.174483
US.TPNV.BHZ.00 2018-11-10T08:45:22.53 10.0 positive automatic P 43 79.0742 1.24832 0.183735
BK.HUMO.BHZ.00 2018-11-10T08:45:19.72 10.0 positive automatic P 36 78.6437 0.990568 0.181395
MX.HSIG.BHZ. 2018-11-10T08:45:18.23 10.0 positive automatic P 53 78.3464 1.1926 0.190759
IU.YSS.BHZ.00 2018-11-10T08:45:14.30 10.0 positive automatic P 331 77.9043 -0.271545 0.186224
BK.CMB.BHZ.00 2018-11-10T08:45:11.12 10.0 positive automatic P 41 77.1462 0.69732 0.202632
II.PFO.BHZ.00 2018-11-10T08:45:10.57 10.0 positive automatic P 46 76.974 1.01143 0.195075
JP.JTU.BHZ. 2018-11-10T08:45:08.50 10.0 positive automatic P 315 76.9471 -0.698465 0.195335
IU.SLBS.BHZ.00 2018-11-10T08:45:08.92 10.0 negative automatic pP 58 76.3913 2.73327 0
JP.YOJ.BHZ. 2018-11-10T08:45:04.20 10.0 positive automatic P 303 76.0162 0.27973 0.214138
JP.JKA.BHZ. 2018-11-10T08:45:03.15 10.0 positive automatic PcP 327 73.6167 -2.76425 0
BK.SAO.BHZ.00 2018-11-10T08:45:03.12 10.0 positive automatic P 41 75.6869 1.03667 0.214992
MY.SBM.BHZ. 2018-11-10T08:45:02.97 10.0 positive automatic P 278 75.7786 0.377344 0.202158
JP.JNU.BHZ. 2018-11-10T08:44:58.10 10.0 positive automatic P 315 75.1215 -0.778118 0.218277
JP.JTM.BHZ. 2018-11-10T08:44:52.75 10.0 positive automatic P 326 74.16 -0.479939 0.151024
JP.JMN.BHZ. 2018-11-10T08:44:49.75 10.0 positive automatic P 317 73.5363 0.107362 0.240502
MY.KKM.BHZ. 2018-11-10T08:44:48.97 10.0 positive automatic P 283 73.4795 -0.386082 0.220157
JP.JOW.BHZ. 2018-11-10T08:44:48.25 10.0 positive automatic P 308 73.2793 0.180993 0.232262
IU.MAJO.BHZ.00 2018-11-10T08:44:43.87 10.0 positive automatic P 321 72.7441 -1.06376 0.243451
G.INU.BHZ.00 2018-11-10T08:44:43.36 10.0 positive automatic P 320 72.6303 -0.853548 0.228731
AK.ATKA.BHZ. 2018-11-10T08:44:42.51 10.0 positive automatic P 360 72.6948 -2.07379 0.247439
JP.JGF.BHZ. 2018-11-10T08:44:42.80 10.0 positive automatic P 320 72.6057 -1.34667 0.228982
JP.JMM.BHZ. 2018-11-10T08:44:40.85 10.0 positive automatic P 324 72.2032 -0.810521 0.255306
MY.LDM.BHZ. 2018-11-10T08:44:36.02 10.0 positive automatic P 283 71.0504 1.293 0.256263
GE.JAGI.BHZ. 2018-11-10T08:44:27.62 10.0 positive automatic P 268 70.1497 -1.61231 0.254719
IU.CASY.BHZ.00 2018-11-10T08:44:01.62 10.0 positive automatic P 205 65.4875 1.7932 0.321312
AU.MORW.BHZ. 2018-11-10T08:43:44.95 10.0 positive automatic P 247 63.2494 -0.276819 0.366203
IU.MBWA.BHZ.00 2018-11-10T08:43:32.27 10.0 positive automatic P 256 61.4874 -1.1422 0.390374
GE.SANI.BHZ. 2018-11-10T08:43:30.92 10.0 positive automatic P 279 61.3275 -1.37795 0.392606
GE.SOEI.BHZ. 2018-11-10T08:43:25.97 10.0 positive automatic P 270 60.2698 0.691576 0.39805
IU.SBA.BHZ.00 2018-11-10T08:43:14.37 10.0 positive automatic P 185 58.1004 4.29249 0.433842
GE.FAKI.BHZ. 2018-11-10T08:42:48.22 10.0 positive automatic P 281 55.2209 -1.39935 0.471376
AU.WRKA.BHZ. 2018-11-10T08:42:32.55 10.0 positive automatic P 253 53.0519 -1.33159 0.516798
AU.FORT.BHZ. 2018-11-10T08:42:29.85 10.0 positive automatic P 246 52.7114 -1.44308 0.510127
GE.GENI.BHZ. 2018-11-10T08:41:56.22 10.0 positive automatic P 286 48.1394 -0.461062 0.598579
AU.HTT.BHZ. 2018-11-10T08:41:19.12 10.0 positive automatic P 243 43.5457 -1.40281 0.688683
IU.PMG.BHZ.00 2018-11-10T08:40:42.32 10.0 positive automatic P 281 39.0534 -1.18396 0.747854
AU.QLP.BHZ. 2018-11-10T08:40:38.65 10.0 positive automatic P 253 38.6412 -1.42263 0.738557
IU.CTAO.BHZ.00 2018-11-10T08:40:26.97 10.0 positive automatic P 263 37.2277 -1.19125 0.783068
G.CAN.BHZ.00 2018-11-10T08:40:14.15 10.0 positive automatic P 237 35.6647 -0.721794 0.760778
AU.ARMA.BHZ. 2018-11-10T08:39:47.02 10.0 positive automatic P 245 32.4712 -0.202661 0.92147
AU.EIDS.BHZ. 2018-11-10T08:39:45.90 10.0 positive automatic P 255 32.4732 -1.19066 0.910325
NZ.ODZ.HHZ.10 2018-11-10T08:39:04.74 10.0 positive automatic P 204 27.6426 0.395068 0.938967
NZ.KHZ.HHZ.10 2018-11-10T08:38:33.06 10.0 positive automatic P 203 24.3136 -1.12006 0.934579
G.PPTF.BHZ.00 2018-11-10T08:38:25.05 10.0 negative automatic P 87 23.2141 1.25226 0.714286
ND.KOUNC.BHZ.00 2018-11-10T08:37:53.52 10.0 positive automatic P 266 20.3621 0.371063 0.930233
NZ.URZ.HHZ.10 2018-11-10T08:37:41.62 10.0 positive automatic P 202 19.3699 -0.712861 0.980392
II.MSVF.BHZ.00 2018-11-10T08:35:19.12 10.0 positive automatic P 289 8.0353 5.71053 0.727273
AU.NIUE.BHZ. 2018-11-10T08:34:14.32 10.0 positive automatic P 70 4.0465 -4.18157 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