Earthquake with magnitude of Mwp 6.0 on date 25-10-2020 and time 12:47:36 (Italy) in region Tonga Islands [Sea: Tonga]

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

  • 25-10-2020 11:47:36 (UTC)
  • 25-10-2020 12:47:36 (UTC +01:00) Italian time
  • 26-10-2020 01:47:36 (UTC +14:00) local time in the region of the earthquake (Pacific/Apia)

and geographic coordinates (lat, lon) -15.28, -173.4 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
Reviewed
Rev100
mb 5.4
Mwp 6.0

Mwpd 6.1
2020-10-25
11:47:36
-15.28 -173.4 20 2020-10-25
12:08:18
Sala Sismica INGV-Roma 84117721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 11:47:36
Latitude -15.28
Longitude -173.40
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 84117721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13457
Semi-minor axis of confidence ellipse (meter) 7843
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 11606.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47.4292
Number of associated phases, regardless of their use for origin computation 123
Number of defining phases 123
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.12943
Epicentral distance of station closest to the epicenter (degree) 5.04247
Epicentral distance of station farthest from the epicenter (degree) 93.78587
Number of stations at which the event was observed 108
Number of stations from which data was used for origin computation 108
Magnitudes information

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 11
Type of magnitude Mwp
Reference to an origin 84117721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-25 12:08:18

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 10
Type of magnitude Mwpd
Reference to an origin 84117721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-25 12:08:18

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 72
Type of magnitude mb
Reference to an origin 84117721
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-25 12:08:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.OXF.BHZ.00 2020-10-25T12:00:51.03 10.0 positive automatic P 55 93.7859 0.955707 0.0675745
IU.LCO.BHZ.00 2020-10-25T12:00:50.37 10.0 positive automatic P 121 93.302 2.15143 0.0728725
IU.CHTO.BHZ.00 2020-10-25T12:00:45.70 10.0 positive automatic P 289 92.7254 0.458055 0.0697441
IU.CCM.BHZ.00 2020-10-25T12:00:47.62 10.0 negative automatic P 51 93.3656 -0.53718 0.0716374
GE.SNAA.BHZ. 2020-10-25T12:00:46.91 10.0 positive automatic P 177 92.8108 1.20699 0.0740966
US.AGMN.BHZ.00 2020-10-25T12:00:46.85 10.0 negative automatic P 41 93.3366 -1.19535 0.0701591
G.PEL.BHZ.00 2020-10-25T12:00:44.50 10.0 positive automatic P 125 91.9359 2.85758 0.0726788
US.ECSD.BHZ.00 2020-10-25T12:00:37.88 10.0 negative automatic P 45 91.3053 -0.808056 0.0834066
C1.BO02.BHZ. 2020-10-25T12:00:40.75 10.0 positive automatic P 127 91.2974 2.02806 0.088609
IU.TEIG.BHZ.00 2020-10-25T12:00:38.87 10.0 positive automatic P 69 90.8083 2.56848 0.0846331
US.MIAR.BHZ.00 2020-10-25T12:00:35.65 10.0 negative automatic P 54 90.515 0.687027 0.0827417
C.GO06.BHZ. 2020-10-25T12:00:31.78 10.0 positive automatic P 131 89.1798 2.86787 0.0974886
GE.GSI.BHZ. 2020-10-25T12:00:31.37 10.0 negative automatic P 272 89.3981 1.64273 0.0938105
US.KSU1.BHZ.00 2020-10-25T12:00:31.80 10.0 positive automatic P 49 89.7178 0.534928 0.0960541
US.NATX.BHZ.00 2020-10-25T12:00:27.40 10.0 positive automatic P 57 88.7669 0.620193 0.105247
IU.YAK.BHZ.00 2020-10-25T12:00:26.87 10.0 negative automatic P 337 89.1823 -1.85258 0
C1.LL02.BHZ. 2020-10-25T12:00:24.83 10.0 positive automatic P 134 87.7318 2.91196 0.100686
US.DGMT.BHZ.00 2020-10-25T12:00:24.98 10.0 negative automatic P 38 88.2888 0.369762 0.106188
CN.INK.BHZ. 2020-10-25T12:00:23.90 10.0 negative automatic P 14 88.346 -0.869947 0
IU.HKT.BHZ.00 2020-10-25T12:00:20.97 10.0 negative automatic P 58 87.2226 1.6457 0.112738
C1.MG02.BHZ. 2020-10-25T12:00:18.10 10.0 positive automatic P 144 86.1578 3.89971 0.119401
US.WMOK.BHZ.00 2020-10-25T12:00:16.58 10.0 positive automatic P 53 86.5516 0.371304 0.11642
US.LAO.BHZ.00 2020-10-25T12:00:15.78 10.0 negative automatic P 39 86.2741 0.85944 0.121338
US.EGMT.BHZ.00 2020-10-25T12:00:07.60 10.0 negative automatic P 37 84.8041 -0.0205599 0.128443
US.AMTX.BHZ.00 2020-10-25T12:00:06.03 10.0 positive automatic P 52 84.4013 0.446119 0.13013
IU.BILL.BHZ.00 2020-10-25T12:00:05.37 10.0 positive automatic P 353 84.6107 -1.1559 0.131477
US.JCT.BHZ.00 2020-10-25T12:00:04.93 10.0 negative automatic P 56 84.195 0.461453 0.133272
US.ISCO.BHZ.00 2020-10-25T12:00:02.50 10.0 negative automatic P 46 83.5945 0.737279 0.144776
US.SDCO.BHZ.00 2020-10-25T11:59:58.75 10.0 positive automatic P 48 82.777 1.23912 0.148269
US.BOZ.BHZ.00 2020-10-25T11:59:55.65 10.0 positive automatic P 38 82.4696 -0.0934123 0.150905
US.BW06.BHZ.00 2020-10-25T11:59:55.28 10.0 positive automatic P 42 82.3384 0.104335 0.153847
IU.COLA.BHZ.00 2020-10-25T11:59:53.65 10.0 negative automatic P 11 82.4688 -1.85527 0.147443
US.MSO.BHZ.00 2020-10-25T11:59:50.80 10.0 negative automatic P 37 81.7646 -1.19128 0.142003
US.AHID.BHZ.00 2020-10-25T11:59:49.63 10.0 positive automatic P 41 81.3542 -0.317965 0.166544
IU.ANMO.BHZ.00 2020-10-25T11:59:48.15 10.0 positive automatic P 50 80.8632 0.838028 0.163141
AT.SKAG.BHZ. 2020-10-25T11:59:47.34 10.0 positive automatic P 19 80.8519 0.383979 0.156682
US.NEW.BHZ.00 2020-10-25T11:59:46.15 10.0 positive automatic P 34 80.7974 -0.624472 0.154731
US.MVCO.BHZ.00 2020-10-25T11:59:45.48 10.0 negative automatic P 47 80.4107 0.534976 0.169162
US.MNTX.BHZ.00 2020-10-25T11:59:44.85 10.0 negative automatic P 53 80.2817 0.909786 0.168361
US.HLID.BHZ.00 2020-10-25T11:59:41.18 10.0 negative automatic P 39 79.7112 0.0815501 0.0820122
IU.FUNA.BHZ.00 2020-10-25T11:59:38.97 10.0 negative automatic ScP 312 9.8989 1.68465 0
US.WRAK.BHZ.00 2020-10-25T11:59:38.80 10.0 positive automatic P 22 79.4627 -0.65048 0.152759
US.DUG.BHZ.00 2020-10-25T11:59:36.80 10.0 negative automatic P 43 78.9392 -0.0281002 0.180723
AT.CRAG.BHZ. 2020-10-25T11:59:34.12 10.0 positive automatic P 22 78.4545 0.201977 0.179451
US.BMO.BHZ.00 2020-10-25T11:59:34.85 10.0 negative automatic P 37 78.7156 -0.692791 0.17278
US.HAWA.BHZ.00 2020-10-25T11:59:33.20 10.0 negative automatic P 35 78.3716 -0.314545 0.186082
MX.HPIG.BHZ. 2020-10-25T11:59:32.88 10.0 negative automatic P 57 78.0826 0.724854 0.188841
US.ELK.BHZ.00 2020-10-25T11:59:29.83 10.0 negative automatic P 41 77.6668 -0.0907666 0.180269
US.WUAZ.BHZ.00 2020-10-25T11:59:29.75 10.0 negative automatic P 47 77.5692 0.480472 0.171815
US.NLWA.BHZ.00 2020-10-25T11:59:24.55 10.0 positive automatic P 32 76.7054 0.300299 0.19994
IU.TUC.BHZ.00 2020-10-25T11:59:23.82 10.0 negative automatic P 51 76.4553 0.93856 0.212153
US.WVOR.BHZ.00 2020-10-25T11:59:23.25 10.0 negative automatic P 38 76.5252 -0.103819 0.20171
MY.SBM.BHZ. 2020-10-25T11:59:17.87 10.0 positive automatic P 277 75.6292 -0.189328 0.190881
IU.COR.BHZ.00 2020-10-25T11:59:15.62 10.0 negative automatic P 34 75.1788 0.165338 0.20801
US.TPNV.BHZ.00 2020-10-25T11:59:14.53 10.0 positive automatic P 44 74.9405 0.190115 0.225384
IU.QSPA.BHZ.00 2020-10-25T11:59:14.47 10.0 positive automatic P 180 74.6651 1.51265 0.217933
II.KDAK.BHZ.00 2020-10-25T11:59:13.95 10.0 positive automatic P 11 75.059 -0.822895 0.229598
MX.HSIG.BHZ. 2020-10-25T11:59:13.23 10.0 negative automatic P 53 74.79 0.00042463 0.216664
IU.YSS.BHZ.00 2020-10-25T11:59:05.60 10.0 positive automatic P 330 73.599 -0.668078 0.197495
MX.SRIG.BHZ. 2020-10-25T11:59:03.18 10.0 negative automatic P 54 72.9908 0.519276 0.246506
MY.KKM.BHZ. 2020-10-25T11:59:01.82 10.0 positive automatic P 281 72.8816 -0.332995 0.247716
BK.CMB.BHZ.00 2020-10-25T11:59:01.87 10.0 negative automatic P 41 72.8546 -0.100689 0.242248
JP.JKA.BHZ. 2020-10-25T11:58:54.55 10.0 positive automatic sP 326 69.5457 5.19051 0
BK.MCCM.BHZ.00 2020-10-25T11:58:53.25 10.0 positive automatic P 40 71.3587 0.355571 0.258752
BK.SAO.BHZ.00 2020-10-25T11:58:53.55 10.0 negative automatic P 42 71.4217 0.219335 0.258047
GE.JAGI.BHZ. 2020-10-25T11:58:48.77 10.0 positive automatic P 266 70.9362 -1.58955 0.124517
IU.CASY.BHZ.00 2020-10-25T11:58:47.42 10.0 positive automatic P 204 70.4416 0.0963357 0.183698
JP.JMN.BHZ. 2020-10-25T11:58:45.55 10.0 positive automatic P 315 70.1462 -0.054908 0.285823
JP.JTM.BHZ. 2020-10-25T11:58:45.30 10.0 negative automatic P 325 70.1537 -0.27844 0.260333
AT.AKUT.BHZ. 2020-10-25T11:58:41.64 10.0 positive automatic P 5 69.7169 -1.23627 0.281419
G.INU.BHZ.00 2020-10-25T11:58:38.16 10.0 negative automatic P 318 69.0323 -0.499741 0.279011
JP.JGF.BHZ. 2020-10-25T11:58:37.60 10.0 negative automatic P 319 68.9821 -0.826606 0.27959
IU.MAJO.BHZ.00 2020-10-25T11:58:37.67 10.0 positive automatic P 320 69.0399 -1.08564 0.278923
AK.ATKA.BHZ. 2020-10-25T11:58:27.31 10.0 positive automatic P 359 67.481 -1.62007 0.314298
AU.MORW.BHZ. 2020-10-25T11:58:19.25 10.0 positive automatic P 245 65.8763 0.517159 0.31297
GE.LUWI.BHZ. 2020-10-25T11:58:09.77 10.0 positive automatic P 276 64.5165 -0.0862358 0.152817
IU.NWAO.BHZ.00 2020-10-25T11:58:09.72 10.0 positive automatic P 240 64.6151 -0.843606 0.298284
IU.SBA.BHZ.00 2020-10-25T11:58:04.92 10.0 positive automatic P 185 63.3429 2.77942 0.369336
GT.VNDA.BHZ.00 2020-10-25T11:58:04.88 10.0 positive automatic P 186 63.4684 1.88758 0.358976
IU.MBWA.BHZ.00 2020-10-25T11:58:01.25 10.0 positive automatic P 254 63.3473 -0.948543 0.356394
GE.SOEI.BHZ. 2020-10-25T11:57:46.82 10.0 positive automatic P 267 60.9121 0.808953 0.398432
GE.SANI.BHZ. 2020-10-25T11:57:46.17 10.0 positive automatic P 276 61.1477 -1.26268 0.360763
AU.FITZ.BHZ. 2020-10-25T11:57:26.50 10.0 positive automatic P 258 58.197 -0.624752 0.417689
GE.FAKI.BHZ. 2020-10-25T11:57:02.77 10.0 positive automatic P 277 54.9036 -0.917882 0.465367
AU.HTT.BHZ. 2020-10-25T11:56:00.17 10.0 positive automatic P 238 46.5869 -0.926326 0.604093
II.TAU.BHZ.00 2020-10-25T11:55:34.77 10.0 positive automatic P 222 43.4186 -1.02668 0.623446
AU.TOO.BHZ.00 2020-10-25T11:55:27.88 10.0 positive automatic P 230 42.5416 -0.900831 0.716134
AU.QLP.BHZ. 2020-10-25T11:55:14.30 10.0 negative automatic P 247 40.9436 -1.333 0.704062
G.KIP.BHZ.00 2020-10-25T11:55:04.67 10.0 negative automatic P 23 39.6815 -0.48929 0.68793
IU.POHA.BHZ.00 2020-10-25T11:55:01.35 10.0 positive automatic P 27 39.1935 -0.067473 0.736619
IU.PMG.BHZ.00 2020-10-25T11:54:59.42 10.0 positive automatic P 274 38.9162 0.653684 0.768337
G.CAN.BHZ.00 2020-10-25T11:54:59.45 10.0 positive automatic P 232 39.1079 -1.02094 0.746813
IU.CTAO.BHZ.00 2020-10-25T11:54:55.27 10.0 positive automatic P 257 38.6454 -1.26718 0.738476
AU.ARMA.BHZ. 2020-10-25T11:54:28.27 10.0 positive automatic P 239 35.4009 -0.823465 0.800491
AU.EIDS.BHZ. 2020-10-25T11:54:20.85 10.0 negative automatic P 247 34.6771 -1.85777 0.833615
NZ.ODZ.HHZ.10 2020-10-25T11:54:04.64 10.0 negative automatic P 201 32.6665 -0.575552 0.874578
NZ.KHZ.HHZ.10 2020-10-25T11:53:34.90 10.0 negative automatic P 200 29.3657 -1.18144 0.970874
IU.SNZO.BHZ.00 2020-10-25T11:53:24.37 10.0 negative automatic P 199 27.9916 0.5034 0.963855
IU.XMAS.BHZ.00 2020-10-25T11:52:42.75 10.0 positive automatic P 44 23.4357 0.225285 0.952381
NZ.OUZ.HHZ.10 2020-10-25T11:52:38.68 10.0 positive automatic P 208 23.0982 -0.301518 0.328407
ND.KOUNC.BHZ.00 2020-10-25T11:52:28.10 10.0 negative automatic P 253 21.8528 2.34147 0.833333
AU.NFK.BHZ.00 2020-10-25T11:52:28.58 10.0 positive automatic P 228 22.0348 0.858068 0.934579
IU.TARA.BHZ.00 2020-10-25T11:52:22.20 10.0 negative automatic P 320 21.4375 0.902822 0.91954
ND.ONTNC.BHZ.00 2020-10-25T11:52:08.99 10.0 positive automatic P 247 20.2993 -0.0121314 0.909091
G.SANVU.BHZ.00 2020-10-25T11:51:53.50 10.0 positive automatic P 267 18.6964 2.0239 0.888889
ND.MARNC.BHZ.00 2020-10-25T11:51:51.65 10.0 positive automatic P 248 18.662 0.554596 0.816327
IU.RAR.BHZ.00 2020-10-25T11:50:54.52 10.0 positive automatic P 117 14.2274 -0.220297 0.963855
IU.FUNA.BHZ.00 2020-10-25T11:49:55.75 10.0 positive automatic P 312 9.8989 0.179348 0.952381
AU.NIUE.BHZ. 2020-10-25T11:48:48.90 10.0 positive automatic P 139 5.0425 -0.0340593 0.898876
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