Earthquake with magnitude of Mwp 6.5 on date 01-10-2020 and time 01:13:35 (UTC) in region Tonga Islands [Sea: Tonga]

A magnitude Mwp 6.5 earthquake occured in region: Tonga Islands [Sea: Tonga], on

  • 01-10-2020 01:13:35 (UTC)
  • 01-10-2020 03:13:35 (UTC +02:00) Italian time
  • 01-10-2020 14:13:35 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -19.48, -174.02 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 5.6
Mwp 6.5

Mwpd 6.6
2020-10-01
01:13:35
-19.48 -174.02 20 2020-10-01
01:30:54
Sala Sismica INGV-Roma 83405441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-01 01:13:35
Latitude -19.48
Longitude -174.02
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 83405441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 22225
Semi-minor axis of confidence ellipse (meter) 13201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 142
Circular confidence region, given by single value of horizontal uncertainty (meter) 17946.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 21.8139
Number of associated phases, regardless of their use for origin computation 159
Number of defining phases 159
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.27063
Epicentral distance of station closest to the epicenter (degree) 3.88046
Epicentral distance of station farthest from the epicenter (degree) 94.69943
Number of stations at which the event was observed 129
Number of stations from which data was used for origin computation 129
Magnitudes information

Mwp:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 57
Type of magnitude Mwp
Reference to an origin 83405441
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-01 01:30:54

Mwpd:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 52
Type of magnitude Mwpd
Reference to an origin 83405441
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-01 01:30:54

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 67
Type of magnitude mb
Reference to an origin 83405441
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-10-01 01:30:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.ECSD.BHZ.00 2020-10-01T01:26:53.90 10.0 positive automatic P 45 94.6994 0.030395 0.0590756
G.HDC.BHZ.00 2020-10-01T01:26:50.65 10.0 positive automatic PcP 81 93.228 2.83405 0
US.MIAR.BHZ.00 2020-10-01T01:26:49.30 10.0 positive automatic PcP 54 93.445 0.687743 0
IU.CHTO.BHZ.00 2020-10-01T01:26:49.10 10.0 negative automatic P 289 93.5208 0.647249 0.0646367
IU.TEIG.BHZ.00 2020-10-01T01:26:40.57 10.0 positive automatic P 70 92.8387 -4.66904 0
US.KSU1.BHZ.00 2020-10-01T01:26:46.83 10.0 positive automatic P 49 92.9103 1.204 0.071024
IU.LCO.BHZ.00 2020-10-01T01:26:43.12 10.0 positive automatic P 122 91.6074 3.1849 0.0761807
IU.LCO.BHZ.00 2020-10-01T01:26:43.67 10.0 positive automatic pP 122 91.6074 -2.7926 0
CU.TGUH.BHZ.00 2020-10-01T01:26:42.00 10.0 positive automatic P 76 91.6607 2.01361 0.0758672
US.DGMT.BHZ.00 2020-10-01T01:26:42.05 10.0 positive automatic P 39 91.9482 0.818103 0.0784524
US.NATX.BHZ.00 2020-10-01T01:26:41.05 10.0 positive automatic P 57 91.5712 1.6473 0.0780917
GE.LHMI.BHZ. 2020-10-01T01:26:37.02 10.0 negative automatic PcP 275 90.8336 0.0233334 0
US.CBKS.BHZ.00 2020-10-01T01:26:35.53 10.0 positive automatic P 49 90.57 0.679978 0.0824058
G.PEL.BHZ.00 2020-10-01T01:26:35.20 10.0 positive automatic PcP 125 89.9835 1.85406 0
US.OGNE.BHZ.00 2020-10-01T01:26:32.35 10.0 positive automatic P 46 89.9003 0.567662 0.0925935
IU.HKT.BHZ.00 2020-10-01T01:26:32.82 10.0 negative automatic PcP 58 89.9524 -0.197731 0
US.LAO.BHZ.00 2020-10-01T01:26:32.98 10.0 positive automatic PcP 39 89.8971 -0.0256023 0
C1.BO02.BHZ. 2020-10-01T01:26:31.52 10.0 positive automatic PcP 127 89.2469 1.39818 0
US.WMOK.BHZ.00 2020-10-01T01:26:30.63 10.0 positive automatic P 53 89.5732 0.468344 0.0959163
GE.GSI.BHZ. 2020-10-01T01:26:27.87 10.0 positive automatic P 272 88.9313 0.785208 0.085319
C.GO05.BHZ. 2020-10-01T01:26:25.95 10.0 positive automatic P 127 88.2947 1.86944 0.0775328
GE.SNAA.BHZ. 2020-10-01T01:26:26.91 10.0 positive automatic P 177 88.6408 1.06982 0.0926198
US.EGMT.BHZ.00 2020-10-01T01:26:25.48 10.0 positive automatic P 37 88.5144 0.196292 0.0975851
US.AMTX.BHZ.00 2020-10-01T01:26:21.38 10.0 positive automatic P 51 87.479 1.0222 0.0541448
GT.PLCA.BHZ.00 2020-10-01T01:26:21.38 10.0 positive automatic PcP 132 87.0555 0.912534 0
C.GO06.BHZ. 2020-10-01T01:26:20.13 10.0 positive automatic P 131 86.8586 2.74257 0.111529
US.RLMT.BHZ.00 2020-10-01T01:26:20.15 10.0 positive automatic P 40 87.2783 0.585442 0.103778
US.JCT.BHZ.00 2020-10-01T01:26:18.85 10.0 positive automatic P 56 87.0239 0.774236 0.110329
US.ISCO.BHZ.00 2020-10-01T01:26:18.85 10.0 positive automatic P 46 86.9522 0.751688 0.0387093
IU.COLA.BHZ.00 2020-10-01T01:26:15.22 10.0 positive automatic P 11 86.7091 -1.24897 0.116595
US.BOZ.BHZ.00 2020-10-01T01:26:14.30 10.0 positive automatic P 38 86.1283 0.444733 0.0598135
US.SDCO.BHZ.00 2020-10-01T01:26:14.23 10.0 positive automatic P 48 86.0478 0.598283 0.127663
C1.LL02.BHZ. 2020-10-01T01:26:12.15 10.0 positive automatic P 134 85.2114 3.05924 0.12384
II.COCO.BHZ.00 2020-10-01T01:26:10.15 10.0 negative automatic P 259 85.1714 1.31727 0
US.MSO.BHZ.00 2020-10-01T01:26:10.23 10.0 positive automatic P 36 85.4932 -0.428475 0.0601605
AK.TNA.BHZ. 2020-10-01T01:26:08.31 10.0 positive automatic P 3 85.1665 -0.506747 0.11106
AT.SKAG.BHZ. 2020-10-01T01:26:08.52 10.0 positive automatic P 19 85.0248 0.403736 0.128788
G.COYC.BHZ.00 2020-10-01T01:26:07.20 10.0 positive automatic P 136 84.1576 3.44597 0.132055
US.NEW.BHZ.00 2020-10-01T01:26:05.75 10.0 positive automatic P 34 84.6088 -0.383881 0.131494
IU.ANMO.BHZ.00 2020-10-01T01:26:04.00 10.0 positive automatic P 50 84.0302 1.61691 0.141081
C1.VA04.BHZ. 2020-10-01T01:26:03.38 10.0 positive automatic PcP 123 83.4593 -1.09296 0
US.HWUT.BHZ.00 2020-10-01T01:26:03.50 10.0 positive automatic P 42 83.9949 0.300756 0.139696
US.MVCO.BHZ.00 2020-10-01T01:26:02.98 10.0 positive automatic P 47 83.7115 1.16263 0.0904076
C1.MG02.BHZ. 2020-10-01T01:26:02.50 10.0 negative automatic P 144 83.1029 4.18164 0.142155
US.MNTX.BHZ.00 2020-10-01T01:26:01.05 10.0 positive automatic P 53 83.2789 1.76989 0.147486
IU.MA2.BHZ.00 2020-10-01T01:26:01.47 10.0 positive automatic P 343 84.1171 -2.09589 0.121344
US.WRAK.BHZ.00 2020-10-01T01:26:01.10 10.0 positive automatic P 22 83.5863 0.296267 0.139795
US.HLID.BHZ.00 2020-10-01T01:25:59.60 10.0 positive automatic P 39 83.3459 -0.264613 0.0468976
C.GO10.BHZ. 2020-10-01T01:25:57.78 10.0 positive automatic P 144 81.9443 5.40215 0.155465
RM.DLV.BHZ. 2020-10-01T01:25:55.87 10.0 positive automatic P 286 82.4975 0.505693 0
US.BMO.BHZ.00 2020-10-01T01:25:55.03 10.0 positive automatic P 37 82.4347 -0.00405659 0.14945
NZ.OUZ.HHZ.10 2020-10-01T01:25:55.79 10.0 negative automatic ScP 212 19.1636 2.78522 0
US.DUG.BHZ.00 2020-10-01T01:25:55.58 10.0 positive automatic P 42 82.4328 0.500147 0.0783784
AT.CRAG.BHZ. 2020-10-01T01:25:55.60 10.0 positive automatic P 22 82.5735 0.0382037 0.127511
US.HAWA.BHZ.00 2020-10-01T01:25:53.78 10.0 positive automatic P 35 82.1665 0.286557 0.149999
US.ELK.BHZ.00 2020-10-01T01:25:49.18 10.0 positive automatic P 41 81.222 0.347766 0.104218
US.WUAZ.BHZ.00 2020-10-01T01:25:48.45 10.0 positive automatic P 47 80.8555 1.68129 0.167097
IU.PMSA.BHZ.00 2020-10-01T01:25:47.32 10.0 positive automatic P 156 80.5265 2.57988 0.152014
US.NLWA.BHZ.00 2020-10-01T01:25:45.45 10.0 positive automatic P 32 80.5862 0.284025 0.142432
US.WVOR.BHZ.00 2020-10-01T01:25:43.55 10.0 positive automatic P 38 80.1936 0.37373 0.167216
IU.TUC.BHZ.00 2020-10-01T01:25:41.65 10.0 positive automatic P 50 79.5926 1.79859 0.112511
NN.PRN.HHZ. 2020-10-01T01:25:40.50 10.0 positive automatic P 44 79.4243 1.47647 0.0362533
IU.INCN.BHZ.00 2020-10-01T01:25:40.57 10.0 negative automatic P 316 79.723 0.166005 0.165745
II.KDAK.BHZ.00 2020-10-01T01:25:37.60 10.0 positive automatic P 11 79.2967 -0.50417 0.0838217
IU.COR.BHZ.00 2020-10-01T01:25:37.07 10.0 positive automatic P 34 78.9836 0.690293 0.164964
US.TPNV.BHZ.00 2020-10-01T01:25:34.30 10.0 positive automatic P 44 78.38 0.983723 0.0363553
MX.HSIG.BHZ. 2020-10-01T01:25:30.94 10.0 positive automatic P 53 77.7802 1.19079 0
IU.YSS.BHZ.00 2020-10-01T01:25:24.85 10.0 negative automatic P 331 76.988 -0.44954 0.204224
BK.CMB.BHZ.00 2020-10-01T01:25:22.62 10.0 positive automatic P 41 76.4153 0.461259 0.200491
MX.SRIG.BHZ. 2020-10-01T01:25:20.77 10.0 positive automatic P 54 75.9303 1.47964 0.205253
MY.SBM.BHZ. 2020-10-01T01:25:17.07 10.0 negative automatic P 278 75.5801 -0.248758 0.208725
JP.YOJ.BHZ. 2020-10-01T01:25:15.75 10.0 negative automatic P 303 75.4139 -0.584688 0.215276
BK.SAO.BHZ.00 2020-10-01T01:25:14.90 10.0 positive automatic P 41 74.9616 1.11833 0.233503
BK.MCCM.BHZ.00 2020-10-01T01:25:14.52 10.0 positive automatic P 39 74.9732 0.733033 0.214811
JP.JKA.BHZ. 2020-10-01T01:25:13.40 10.0 negative automatic PcP 327 72.7341 -4.56838 0
GE.SMRI.BHZ. 2020-10-01T01:25:08.42 10.0 negative automatic P 268 74.0644 -0.129171 0.229301
II.ERM.BHZ.00 2020-10-01T01:25:02.47 10.0 negative automatic P 328 73.1117 -0.446728 0.234027
JP.JTM.BHZ. 2020-10-01T01:25:02.95 10.0 negative automatic P 326 73.2873 -1.01795 0.232179
MY.KKM.BHZ. 2020-10-01T01:25:02.62 10.0 negative automatic P 283 73.1949 -0.923989 0.244252
JP.JMN.BHZ. 2020-10-01T01:25:00.35 10.0 negative automatic P 317 72.7603 -0.576843 0.237746
AT.SMY.BHZ. 2020-10-01T01:25:00.06 10.0 positive automatic P 353 72.9456 -1.87955 0.171761
JP.JOW.BHZ. 2020-10-01T01:24:59.85 10.0 negative automatic P 308 72.6122 -0.140465 0.239322
IU.MAJO.BHZ.00 2020-10-01T01:24:54.42 10.0 negative automatic P 321 71.9176 -1.44667 0.258537
JP.JGF.BHZ. 2020-10-01T01:24:53.45 10.0 negative automatic P 320 71.7919 -1.69218 0.232309
G.INU.BHZ.00 2020-10-01T01:24:53.31 10.0 positive automatic P 320 71.8206 -1.92583 0.191313
IU.ADK.BHZ.00 2020-10-01T01:24:51.40 10.0 positive automatic P 358 71.4009 -1.31475 0.258281
MY.LDM.BHZ. 2020-10-01T01:24:49.62 10.0 negative automatic P 283 70.7641 0.757547 0.253667
GE.JAGI.BHZ. 2020-10-01T01:24:42.97 10.0 negative automatic P 268 70.1279 -2.0011 0.266542
II.KAPI.BHZ.00 2020-10-01T01:24:17.52 10.0 positive automatic P 273 65.9401 -1.16364 0.334767
GE.LUWI.BHZ. 2020-10-01T01:24:08.32 10.0 negative automatic P 278 64.4745 -0.80541 0.312635
AU.MORW.BHZ. 2020-10-01T01:24:02.15 10.0 positive automatic P 246 63.5977 -1.27077 0.349051
IU.NWAO.BHZ.00 2020-10-01T01:23:52.55 10.0 positive automatic P 242 62.0823 -0.793128 0.391448
IU.MBWA.BHZ.00 2020-10-01T01:23:48.75 10.0 negative automatic P 256 61.6745 -1.81771 0.354053
GE.SANI.BHZ. 2020-10-01T01:23:44.92 10.0 negative automatic P 279 61.1124 -1.82302 0.386418
GE.TNTI.BHZ. 2020-10-01T01:23:43.92 10.0 negative automatic P 282 60.8936 -1.33456 0.364026
GE.SOEI.BHZ. 2020-10-01T01:23:40.82 10.0 positive automatic P 270 60.2121 0.0447599 0.38979
IU.SBA.BHZ.00 2020-10-01T01:23:36.60 10.0 positive automatic P 185 59.1049 3.62185 0.37915
GT.VNDA.BHZ.00 2020-10-01T01:23:36.58 10.0 positive automatic P 186 59.226 2.75141 0.42762
NZ.KHZ.HHZ.10 2020-10-01T01:23:27.20 10.0 negative automatic S 202 25.2279 5.454 0
AU.FITZ.BHZ. 2020-10-01T01:23:15.58 10.0 negative automatic P 261 56.8369 -1.50574 0.422661
GE.FAKI.BHZ. 2020-10-01T01:23:02.02 10.0 negative automatic P 280 54.9745 -1.72687 0.464317
IU.SNZO.BHZ.00 2020-10-01T01:22:57.80 10.0 negative automatic S 201 23.8437 -1.70033 0
GE.GENI.BHZ. 2020-10-01T01:22:09.32 10.0 negative automatic P 285 47.8177 -0.795284 0.590095
G.KIP.BHZ.00 2020-10-01T01:21:39.02 10.0 negative automatic P 22 43.7952 0.652705 0.617128
AU.HTT.BHZ. 2020-10-01T01:21:37.15 10.0 positive automatic P 242 43.9685 -2.71981 0.680833
IU.POHA.BHZ.00 2020-10-01T01:21:34.07 10.0 positive automatic P 26 43.2184 0.030239 0.633712
IU.WAKE.BHZ.00 2020-10-01T01:21:31.02 10.0 negative automatic P 333 43.1515 -2.13894 0.589507
II.TAU.BHZ.00 2020-10-01T01:21:07.17 10.0 positive automatic P 225 39.9812 -0.024524 0.682644
AU.TOO.BHZ.00 2020-10-01T01:21:02.30 10.0 negative automatic P 234 39.4997 -0.968703 0.739372
IU.PMG.BHZ.00 2020-10-01T01:20:56.32 10.0 negative automatic P 279 38.8211 -1.18983 0.735193
AU.QLP.BHZ. 2020-10-01T01:20:56.15 10.0 negative automatic P 251 38.8979 -2.03044 0.633047
IU.CTAO.BHZ.00 2020-10-01T01:20:43.17 10.0 negative automatic P 262 37.2977 -1.5386 0.809958
AU.MILA.BHZ.00 2020-10-01T01:20:37.73 10.0 positive automatic P 233 36.5625 -0.806556 0.805466
G.CAN.BHZ.00 2020-10-01T01:20:33.75 10.0 positive automatic P 236 36.1699 -1.41061 0.768114
AU.ARMA.BHZ. 2020-10-01T01:20:05.20 10.0 positive automatic P 244 32.8556 -1.36053 0.77195
AU.EIDS.BHZ. 2020-10-01T01:20:02.00 10.0 negative automatic P 253 32.6989 -2.03628 0.799538
NZ.ODZ.HHZ.10 2020-10-01T01:19:28.97 10.0 positive automatic P 203 28.5486 0.564669 0.961538
IU.XMAS.BHZ.00 2020-10-01T01:19:14.97 10.0 positive automatic P 39 26.9857 0.592308 0.860215
NZ.KHZ.HHZ.10 2020-10-01T01:18:57.01 10.0 negative automatic P 202 25.2279 -1.47883 0.851064
G.PPTF.BHZ.00 2020-10-01T01:18:42.20 10.0 positive automatic P 89 23.2389 2.08497 0.851064
IU.SNZO.BHZ.00 2020-10-01T01:18:42.17 10.0 negative automatic P 201 23.8437 -3.71507 0.720721
ND.KOUNC.BHZ.00 2020-10-01T01:18:14.55 10.0 positive automatic pP 263 20.3995 4.92017 0.952381
NZ.URZ.HHZ.10 2020-10-01T01:18:02.34 10.0 negative automatic P 200 20.2945 -6.15736 0.328407
NZ.OUZ.HHZ.10 2020-10-01T01:17:55.83 10.0 positive automatic P 212 19.1636 -0.314491 0.980392
AU.NFK.BHZ.00 2020-10-01T01:17:55.28 10.0 negative automatic P 236 18.9897 1.01936 0
IU.RAO.BHZ.00 2020-10-01T01:17:52.15 10.0 positive automatic S 199 10.389 -4.31021 0
ND.ONTNC.BHZ.00 2020-10-01T01:17:48.50 10.0 negative automatic P 258 18.4483 0.196633 0.869565
G.SANVU.BHZ.00 2020-10-01T01:17:48.35 10.0 negative automatic P 280 18.3516 1.13959 0.833333
ND.MARNC.BHZ.00 2020-10-01T01:17:32.05 10.0 negative automatic pP 260 16.9265 2.43531 0.833333
IU.RAR.BHZ.00 2020-10-01T01:16:42.47 10.0 negative automatic P 100 13.4597 -1.33919 0.860215
IU.RAO.BHZ.00 2020-10-01T01:16:03.52 10.0 positive automatic P 199 10.389 1.68996 0.97561
II.MSVF.BHZ.00 2020-10-01T01:15:32.92 10.0 negative automatic P 282 7.7137 7.64571 0.833333
IU.AFI.BHZ.00 2020-10-01T01:14:57.60 10.0 negative automatic P 21 5.9718 -3.74752 0.43956
AU.NIUE.BHZ. 2020-10-01T01:14:31.95 10.0 negative automatic P 85 3.8805 -0.552156 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