Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.9 on date 21-09-2023 and time 21:11:51 (UTC) in region Vanuatu Islands [Sea: Vanuatu]

A magnitude Mwp 5.9 earthquake occured in region: Vanuatu Islands [Sea: Vanuatu], on

  • 21-09-2023 21:11:51 (UTC)
  • 21-09-2023 23:11:51 (UTC +02:00) Italian time
  • 22-09-2023 08:11:51 (UTC +11:00) local time in the region of the earthquake (Pacific/Efate)

and geographic coordinates (lat, lon) -13.9850, 167.2800 at 196 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.

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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 5.9
Mwpd 6.0 		2023-09-21
21:11:51		 -13.9852 167.28 196 2023-09-21
21:28:38		 Sala Sismica INGV-Roma 121323421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-21 21:11:51
Latitude -13.9852
Longitude 167.2800
Depth (km) 196 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 121323421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 15008916
Semi-minor axis of confidence ellipse (meter) 7223766
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 13099500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49.1865
Number of associated phases, regardless of their use for origin computation 121
Number of defining phases 121
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.846938
Epicentral distance of station closest to the epicenter (degree) 7.16004
Epicentral distance of station farthest from the epicenter (degree) 98.75255
Number of stations at which the event was observed 121
Number of stations from which data was used for origin computation 121
Magnitudes information

Mwp:5.9

Field Value
Value 5.9
Uncertainty 0.1
Num. used stations 54
Type of magnitude Mwp
Reference to an origin 121323421
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-09-21 21:28:38

Mwpd:6.0

Field Value
Value 6.0
Uncertainty 0.1
Num. used stations 56
Type of magnitude Mwpd
Reference to an origin 121323421
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-09-21 21:28:38

mb:5.4

Field Value
Value 5.4
Uncertainty 0.2
Num. used stations 107
Type of magnitude mb
Reference to an origin 121323421
Agency INGV
Autore Auto added
Time of creation (UTC) 2023-09-21 21:28:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IU.RSSD.BHZ.00 2023-09-21T21:25:08.12 10.0 positive automatic P 47 10961.5275 -0.445789 0.0217173
US.EGMT.BHZ.00 2023-09-21T21:24:53.33 10.0 positive automatic P 42 10627.7061 -0.690905 0.0872788
CN.PAULN.BHZ. 2023-09-21T21:24:52.08 10.0 positive automatic P 19 10636.4085 -2.11526 0.091189
US.MNTX.BHZ.00 2023-09-21T21:24:51.03 10.0 positive automatic P 59 10553.9688 0.144148 0.0959669
IU.ANMO.BHZ.00 2023-09-21T21:24:50.70 10.0 positive automatic P 55 10540.8486 -1.4574 0.0928498
US.MVCO.BHZ.00 2023-09-21T21:24:47.68 10.0 positive automatic P 53 10424.676 1.81802 0.0971914
US.BOZ.BHZ.00 2023-09-21T21:24:45.48 10.0 positive automatic P 44 10419.1371 -0.0522421 0.0181617
GE.SNAA.BHZ. 2023-09-21T21:24:45.71 10.0 positive automatic P 183 10442.88 -0.920602 0.096853
US.MSO.BHZ.00 2023-09-21T21:24:40.58 10.0 positive automatic P 42 10288.9785 0.494056 0.0910964
US.HWUT.BHZ.00 2023-09-21T21:24:39.90 10.0 positive automatic P 48 10300.6779 -0.763609 0.096113
IU.PMSA.BHZ.00 2023-09-21T21:24:38.27 10.0 positive automatic P 161 10242.6027 0.325231 0.0469829
US.DUG.BHZ.00 2023-09-21T21:24:34.35 10.0 positive automatic P 49 10155.3567 -0.215609 0.102415
US.WUAZ.BHZ.00 2023-09-21T21:24:33.88 10.0 positive automatic P 54 10126.6188 -1.07489 0.0950746
US.HLID.BHZ.00 2023-09-21T21:24:33.85 10.0 positive automatic P 45 10142.3697 -0.222011 0.0458773
US.NEW.BHZ.00 2023-09-21T21:24:31.78 10.0 positive automatic P 40 10114.5975 -0.964029 0.0974423
IU.TUC.BHZ.00 2023-09-21T21:24:31.82 10.0 positive automatic P 57 10079.2995 -1.23589 0.0981262
US.ELK.BHZ.00 2023-09-21T21:24:27.00 10.0 positive automatic P 48 9979.2219 -0.327696 0.0506209
CN.EAGLY.BHZ. 2023-09-21T21:24:26.43 10.0 positive automatic P 19 10014.4533 -2.12152 0.101686
US.BMO.BHZ.00 2023-09-21T21:24:26.08 10.0 positive automatic P 43 9971.7627 -0.758579 0.0969849
GE.MALK.BHZ. 2023-09-21T21:24:23.67 10.0 positive automatic P 279 9866.6013 0.330188 0.105975
NN.PRN.HHZ. 2023-09-21T21:24:23.28 10.0 positive automatic P 51 9876.2694 -0.881712 0.105278
US.HAWA.BHZ.00 2023-09-21T21:24:22.35 10.0 positive automatic P 41 9871.2744 -0.812004 0.108396
IU.TIXI.BHZ.00 2023-09-21T21:24:22.90 10.0 positive automatic P 349 9924.6765 -0.0686478 0.109848
II.PALK.BHZ.00 2023-09-21T21:24:21.75 10.0 positive automatic P 278 9818.7492 0.141058 0.107015
IO.EVN.BHZ. 2023-09-21T21:24:20.70 10.0 positive automatic P 299 9807.5271 0.123814 0.0479925
US.WVOR.BHZ.00 2023-09-21T21:24:18.28 10.0 positive automatic P 45 9777.4572 -1.20905 0.0336262
CN.ATLI.BHZ. 2023-09-21T21:24:14.48 10.0 positive automatic P 26 9706.3284 -1.07228 0.110792
II.PFO.BHZ.00 2023-09-21T21:24:11.82 10.0 positive automatic P 54 9619.7817 -1.17918 0.114138
US.NLWA.BHZ.00 2023-09-21T21:24:11.40 10.0 positive automatic P 39 9613.1883 -1.30926 0.114295
II.TLY.BHZ.00 2023-09-21T21:24:05.40 10.0 positive automatic P 326 9495.7503 0.266437 0.194844
IU.COLA.BHZ.00 2023-09-21T21:24:05.12 10.0 positive automatic P 17 9523.1784 -1.34145 0.116465
BK.CMB.BHZ.00 2023-09-21T21:24:04.07 10.0 positive automatic P 49 9460.7964 -1.5198 0.114517
G.PAF.BHZ.00 2023-09-21T21:23:58.90 10.0 positive automatic P 221 9316.9959 0.724614 0.113566
BK.MCCM.BHZ.00 2023-09-21T21:23:56.70 10.0 positive automatic P 48 9264.5817 -0.0603084 0.123059
IU.BILL.BHZ.00 2023-09-21T21:23:47.17 10.0 positive automatic P 360 9107.439 -0.521391 0.190433
IU.ULN.BHZ.00 2023-09-21T21:23:46.72 10.0 positive automatic P 324 9070.3206 0.396556 0.250759
AK.TNA.BHZ. 2023-09-21T21:23:45.77 10.0 positive automatic P 10 9067.6344 -0.203003 0.166568
IU.YAK.BHZ.00 2023-09-21T21:23:44.57 10.0 positive automatic P 343 9050.5293 0.0884478 0.164766
AK.GAMB.BHZ. 2023-09-21T21:23:33.63 10.0 positive automatic P 9 8816.1417 -0.876679 0.147001
II.KDAK.BHZ.00 2023-09-21T21:23:31.75 10.0 positive automatic P 20 8767.0908 -0.875345 0.137423
IU.QSPA.BHZ.00 2023-09-21T21:23:15.52 10.0 positive automatic P 180 8430.006 -1.0284 0.271239
IU.CHTO.BHZ.00 2023-09-21T21:23:10.07 10.0 positive automatic P 294 8309.349 0.39254 0.156714
IU.MA2.BHZ.00 2023-09-21T21:23:07.17 10.0 positive automatic P 351 8298.8262 -1.00555 0.153371
PS.PSI.BHZ. 2023-09-21T21:22:38.71 10.0 positive automatic P 278 7741.7505 0.433553 0.254587
PS.VIVO.BHZ. 2023-09-21T21:22:34.71 10.0 positive automatic P 297 7645.9353 1.06101 0.176484
MY.KUM.BHZ. 2023-09-21T21:22:33.77 10.0 positive automatic P 281 7640.9403 0.412498 0.198824
IU.ADK.BHZ.00 2023-09-21T21:22:23.77 10.0 positive automatic P 11 7472.4645 0.567819 0.193788
IU.PET.BHZ.00 2023-09-21T21:22:23.40 10.0 positive automatic P 354 7483.1982 -0.397806 0.188632
MY.KOM.BHZ. 2023-09-21T21:22:08.62 10.0 positive automatic P 279 7189.4811 0.508235 0.348647
IU.YSS.BHZ.00 2023-09-21T21:22:07.65 10.0 positive automatic P 342 7191.357 0.167129 0.299723
IU.CASY.BHZ.00 2023-09-21T21:22:03.42 10.0 positive automatic P 202 7125.3231 -0.493773 0.105541
RM.DLV.BHZ. 2023-09-21T21:22:02.37 10.0 positive automatic P 291 7079.8242 0.492898 0.108362
IU.INCN.BHZ.00 2023-09-21T21:22:02.62 10.0 positive automatic P 325 7112.3028 0.284953 0.1949
IU.SBA.BHZ.00 2023-09-21T21:22:02.47 10.0 positive automatic P 180 7088.6598 -0.659867 0.319755
GE.MNAI.BHZ. 2023-09-21T21:22:02.67 10.0 positive automatic P 272 7109.2503 -0.216844 0.182876
PS.TJN.BHZ. 2023-09-21T21:21:54.46 10.0 positive automatic P 325 6979.2027 -0.889596 0.207006
JP.JKA.BHZ. 2023-09-21T21:21:51.25 10.0 positive automatic P 340 6915.9549 -0.363175 0.220849
AU.XMI.BHZ.00 2023-09-21T21:21:38.28 10.0 positive automatic P 266 6675.6954 1.17728 0.22626
II.ERM.BHZ.00 2023-09-21T21:21:37.67 10.0 positive automatic P 340 6687.3615 -0.249495 0.236208
JP.JTU.BHZ. 2023-09-21T21:21:37.95 10.0 positive automatic P 324 6703.845 -1.56946 0.235047
JP.JTM.BHZ. 2023-09-21T21:21:34.60 10.0 positive automatic P 337 6650.7315 -0.576289 0.238818
IU.TATO.BHZ.00 2023-09-21T21:21:30.22 10.0 positive automatic P 311 6575.6733 -0.56679 0.367339
JP.YOJ.BHZ. 2023-09-21T21:21:20.55 10.0 positive automatic P 311 6419.463 -0.548308 0.312456
JP.JSU.BHZ. 2023-09-21T21:21:18.85 10.0 positive automatic P 323 6392.8785 -0.0304277 0.0841546
JP.JMN.BHZ. 2023-09-21T21:21:17.25 10.0 positive automatic P 327 6365.7057 -0.387297 0.324273
MY.SBM.BHZ. 2023-09-21T21:21:15.97 10.0 positive automatic P 282 6325.5015 0.430409 0.41631
PS.ISG.BHZ. 2023-09-21T21:21:14.31 10.0 positive automatic P 312 6315.2007 -0.327497 0.258732
JP.JGF.BHZ. 2023-09-21T21:21:14.45 10.0 positive automatic P 331 6338.6106 -0.74249 0.245392
G.INU.BHZ.00 2023-09-21T21:21:14.51 10.0 positive automatic P 331 6332.6721 -0.240057 0.216929
GE.SMRI.BHZ. 2023-09-21T21:21:10.87 10.0 positive automatic P 271 6237.0123 0.260912 0.242668
JP.JOW.BHZ. 2023-09-21T21:21:06.05 10.0 positive automatic P 317 6180.9351 -0.0375848 0.448601
JP.JHJ2.BHZ. 2023-09-21T21:20:52.10 10.0 positive automatic P 331 5983.3773 -0.552057 0.28166
JP.JMZ.BHZ. 2023-09-21T21:20:46.85 10.0 positive automatic P 318 5890.0485 -0.141501 0.278021
GE.JAGI.BHZ. 2023-09-21T21:20:40.87 10.0 positive automatic P 270 5805.3888 0.399569 0.299199
GE.BKB.BHZ. 2023-09-21T21:20:38.72 10.0 positive automatic P 280 5709.0297 2.32195 0.309386
IU.POHA.BHZ.00 2023-09-21T21:20:23.55 10.0 positive automatic P 48 5524.2702 0.116076 0.338116
AU.MORW.BHZ. 2023-09-21T21:20:21.25 10.0 positive automatic P 244 5503.047 0.579434 0.563459
G.KIP.BHZ.00 2023-09-21T21:20:18.62 10.0 positive automatic P 45 5453.2524 0.237888 0.355243
IU.NWAO.BHZ.00 2023-09-21T21:20:17.35 10.0 positive automatic P 238 5452.2867 0.107981 0.535016
II.KAPI.BHZ.00 2023-09-21T21:20:07.37 10.0 positive automatic P 276 5287.5183 0.834861 0.345011
JP.JCJ.BHZ. 2023-09-21T21:20:05.85 10.0 positive automatic P 329 5301.1602 -0.222686 0.422081
PS.OGS.BHZ. 2023-09-21T21:20:05.36 10.0 positive automatic P 329 5296.5759 -1.8247 0.449191
GE.LUWI.BHZ. 2023-09-21T21:19:53.37 10.0 positive automatic P 282 5091.3924 0.725941 0.404934
IU.MBWA.BHZ.00 2023-09-21T21:19:52.35 10.0 positive automatic P 254 5075.919 1.05115 0.420036
GE.SANI.BHZ. 2023-09-21T21:19:26.37 10.0 positive automatic P 283 4717.4778 1.04598 0.474819
GE.SOEI.BHZ. 2023-09-21T21:19:25.57 10.0 positive automatic P 271 4689.6057 1.12637 0.50145
GE.TNTI.BHZ. 2023-09-21T21:19:24.22 10.0 positive automatic P 287 4682.5905 0.889235 0.476425
AU.MCQ.BHZ.00 2023-09-21T21:19:13.85 10.0 positive automatic P 187 4554.6075 -0.417465 0.497451
AU.FITZ.BHZ. 2023-09-21T21:19:07.05 10.0 positive automatic P 258 4456.4169 0.554218 0.72632
AU.FORT.BHZ.00 2023-09-21T21:19:03.05 10.0 positive automatic P 238 4405.2237 -0.213792 0.600237
PS.KOR.BHZ. 2023-09-21T21:18:57.21 10.0 positive automatic P 301 4320.0534 0.318768 0.552951
GE.BNDI.BHZ. 2023-09-21T21:18:49.67 10.0 positive automatic P 281 4220.3088 0.266229 0.275107
GE.FAKI.BHZ. 2023-09-21T21:18:34.87 10.0 positive automatic P 284 4030.0659 0.16478 0.8662
AU.MTN.BHZ.00 2023-09-21T21:18:25.43 10.0 positive automatic P 267 3901.1283 0.276751 0.19097
AU.KDU.BHZ.00 2023-09-21T21:18:14.35 10.0 positive automatic P 268 3758.793 0.21769 0.339095
II.TAU.BHZ.00 2023-09-21T21:18:12.07 10.0 positive automatic P 207 3733.5405 -0.588322 0.740382
IU.RAR.BHZ.00 2023-09-21T21:18:01.70 10.0 positive automatic P 108 3569.4714 1.18906 0.829321
AU.HTT.BHZ.00 2023-09-21T21:18:00.55 10.0 positive automatic P 228 3579.0507 0.325338 1.06431
AU.TOO.BHZ.00 2023-09-21T21:17:45.25 10.0 positive automatic P 215 3386.8764 0.19397 1.2489
NZ.KHZ.HHZ.10 2023-09-21T21:17:29.42 10.0 positive automatic P 170 3212.2512 -0.432453 0.109469
IU.SNZO.BHZ.00 2023-09-21T21:17:21.20 10.0 positive automatic P 168 3116.3805 -0.964124 0.860215
G.CAN.BHZ.00 2023-09-21T21:17:13.30 10.0 positive automatic P 214 2989.8849 -0.540637 1.16611
NZ.URZ.HHZ.10 2023-09-21T21:17:01.08 10.0 positive automatic P 162 2862.4569 -0.675016 0.934838
AU.QLP.BHZ. 2023-09-21T21:16:55.82 10.0 positive automatic P 236 2769.4389 0.528728 1.00754
AU.RIV.BHZ. 2023-09-21T21:16:53.47 10.0 positive automatic P 214 2735.3397 -0.332389 1.16637
AU.COEN.BHZ.00 2023-09-21T21:16:42.55 10.0 positive automatic P 267 2595.3132 1.23174 1.37848
II.KWJN.BHZ.00 2023-09-21T21:16:40.62 10.0 positive automatic P 1 2583.2808 0.336905 0.91954
PS.PATS.BHZ. 2023-09-21T21:16:33.86 10.0 positive automatic P 336 2513.2953 -0.671768 0.816327
AU.NIUE.BHZ.00 2023-09-21T21:16:32.98 10.0 positive automatic P 106 2487.9651 0.507128 0.97561
NZ.OUZ.HHZ.10 2023-09-21T21:16:28.15 10.0 positive automatic P 166 2440.0131 -1.25627 1.43125
AU.ARMA.BHZ. 2023-09-21T21:16:27.85 10.0 positive automatic P 219 2425.8828 -0.108137 1.39872
IU.CTAO.BHZ.00 2023-09-21T21:16:18.75 10.0 positive automatic P 250 2329.5903 -0.426825 1.396
AU.LHI.BHZ.00 2023-09-21T21:15:58.68 10.0 positive automatic P 202 2118.2907 0.708638 0.229885
AU.EIDS.BHZ. 2023-09-21T21:15:58.55 10.0 positive automatic P 231 2108.9223 1.12471 1.2837
AU.RABL.BHZ.00 2023-09-21T21:15:42.73 10.0 positive automatic P 302 1979.6961 -1.74491 0.776699
AU.NFK.BHZ.00 2023-09-21T21:15:13.10 10.0 positive automatic P 178 1672.7478 -0.316986 0.297619
II.MSVF.BHZ.00 2023-09-21T21:14:26.95 10.0 positive automatic P 111 1223.1312 3.44794 0.470588
IU.HNR.BHZ.00 2023-09-21T21:13:50.07 10.0 positive automatic P 302 943.0893 -0.195881 0.322453
ND.ONTNC.BHZ.00 2023-09-21T21:13:48.40 10.0 positive automatic P 185 927.8157 -0.0430944 1.93908
ND.MARNC.BHZ.00 2023-09-21T21:13:35.85 10.0 positive automatic P 175 835.7523 -0.556009 1.15784
ND.KOUNC.BHZ.00 2023-09-21T21:13:32.55 10.0 positive automatic P 203 794.76 0.113199 2.00254
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