Earthquake with magnitude of Mwp 6.1 on date 17-03-2020 and time 17:06:26 (Italy) in region Tonga [Sea]

A magnitude Mwp 6.1 earthquake occured in region: Tonga [Sea], on

  • 17-03-2020 16:06:26 (UTC)
  • 17-03-2020 17:06:26 (UTC +01:00) Italian time
  • 17-03-2020 05:06:26 (UTC -11:00) local time in the region of the earthquake (Pacific/Pago_Pago)

and geographic coordinates (lat, lon) -16.26, -172.2 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 5.4
Mwp 6.1

Mwpd 6.3
2020-03-17
16:06:26
-16.26 -172.2 20 2020-03-17
16:24:32
Sala Sismica INGV-Roma 77327191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-17 16:06:26
Latitude -16.26
Longitude -172.20
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 77327191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 15840
Semi-minor axis of confidence ellipse (meter) 5044
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 165
Circular confidence region, given by single value of horizontal uncertainty (meter) 13427.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 33.9186
Number of associated phases, regardless of their use for origin computation 118
Number of defining phases 118
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.92068
Epicentral distance of station closest to the epicenter (degree) 3.54953
Epicentral distance of station farthest from the epicenter (degree) 95.289
Number of stations at which the event was observed 105
Number of stations from which data was used for origin computation 105
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 42
Type of magnitude Mwpd
Reference to an origin 77327191
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-03-17 16:24:32

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 43
Type of magnitude Mwp
Reference to an origin 77327191
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-03-17 16:24:32

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 77
Type of magnitude mb
Reference to an origin 77327191
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-03-17 16:24:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.JFWS.BHZ.00 2020-03-17T16:19:45.33 10.0 negative automatic P 47 95.289 -1.7097 0.0613984
IU.CHTO.BHZ.00 2020-03-17T16:19:42.77 10.0 positive automatic P 288 94.1348 1.00968 0.0663641
GE.LHMI.BHZ. 2020-03-17T16:19:42.32 10.0 negative automatic sP 275 92.2743 1.5985 0
GE.GSI.BHZ. 2020-03-17T16:19:35.12 10.0 negative automatic sP 271 90.5769 2.23883 0
IU.LCO.BHZ.00 2020-03-17T16:19:33.72 10.0 negative automatic P 121 91.8037 2.39142 0.0750286
GE.SNAA.BHZ. 2020-03-17T16:19:32.61 10.0 positive automatic P 177 91.7646 1.71076 0.0824249
GE.GSI.BHZ. 2020-03-17T16:19:27.57 10.0 positive automatic P 271 90.5769 2.302 0.0823623
IU.YAK.BHZ.00 2020-03-17T16:19:25.92 10.0 positive automatic PcP 337 90.5436 -0.297669 0
US.ECSD.BHZ.00 2020-03-17T16:19:25.73 10.0 positive automatic P 44 91.1953 -2.47411 0.0841083
GE.BOAB.BHZ. 2020-03-17T16:19:24.95 10.0 negative automatic PcP 77 90.2078 0.168494 0
IU.TEIG.BHZ.00 2020-03-17T16:19:24.92 10.0 negative automatic PcP 69 90.08 0.766092 0
CN.INK.BHZ. 2020-03-17T16:19:15.08 10.0 negative automatic P 13 89.0324 -2.96226 0.0973733
GT.PLCA.BHZ.00 2020-03-17T16:19:15.60 10.0 negative automatic P 132 87.9409 2.54476 0.110041
C.GO06.BHZ. 2020-03-17T16:19:13.75 10.0 positive automatic P 131 87.6616 1.99086 0.0894885
C1.LL01.BHZ. 2020-03-17T16:19:08.35 10.0 positive automatic P 133 86.0847 4.48597 0.117231
C1.LL01.BHZ. 2020-03-17T16:19:08.93 10.0 negative automatic pP 133 86.0847 -1.44543 0
C1.LL02.BHZ. 2020-03-17T16:19:07.35 10.0 negative automatic P 134 86.2169 2.77608 0.111193
MY.KOM.BHZ. 2020-03-17T16:19:03.72 10.0 positive automatic pP 273 84.6997 0.275668 0
G.COYC.BHZ.00 2020-03-17T16:19:03.50 10.0 positive automatic P 136 85.2961 3.52036 0.129056
IU.BILL.BHZ.00 2020-03-17T16:18:59.02 10.0 negative automatic P 352 85.7398 -3.18292 0.122606
MY.KOM.BHZ. 2020-03-17T16:18:58.62 10.0 negative automatic P 273 84.6997 1.66481 0.13388
US.EGMT.BHZ.00 2020-03-17T16:18:56.28 10.0 positive automatic P 37 84.9007 -1.86773 0.13547
US.AMTX.BHZ.00 2020-03-17T16:18:53.08 10.0 negative automatic P 51 84.1155 -1.08626 0.138691
US.RLMT.BHZ.00 2020-03-17T16:18:50.85 10.0 negative automatic P 39 83.6936 -1.34488 0.140544
US.ISCO.BHZ.00 2020-03-17T16:18:49.88 10.0 negative automatic P 45 83.4611 -1.23783 0.14418
IU.COLA.BHZ.00 2020-03-17T16:18:46.07 10.0 negative automatic P 10 83.2283 -3.40122 0.146158
US.SDCO.BHZ.00 2020-03-17T16:18:45.45 10.0 positive automatic P 47 82.5939 -1.1394 0.15162
US.BOZ.BHZ.00 2020-03-17T16:18:43.98 10.0 negative automatic P 38 82.5286 -2.10621 0.124114
US.BW06.BHZ.00 2020-03-17T16:18:42.93 10.0 positive automatic P 41 82.3122 -2.13989 0.150493
US.MSO.BHZ.00 2020-03-17T16:18:40.05 10.0 positive automatic P 36 81.8744 -2.55131 0.145784
AT.SKAG.BHZ. 2020-03-17T16:18:38.52 10.0 positive automatic P 18 81.4252 -1.51567 0.151819
US.AHID.BHZ.00 2020-03-17T16:18:38.15 10.0 negative automatic P 41 81.3432 -1.76573 0.158894
US.NEW.BHZ.00 2020-03-17T16:18:35.45 10.0 positive automatic P 34 80.9715 -2.27873 0.166039
US.WRAK.BHZ.00 2020-03-17T16:18:34.70 10.0 positive automatic P 21 79.9576 2.52992 0
IU.ANMO.BHZ.00 2020-03-17T16:18:33.00 10.0 positive automatic P 49 80.6228 -2.05849 0.173351
US.MVCO.BHZ.00 2020-03-17T16:18:33.33 10.0 positive automatic P 46 80.2438 -0.749353 0.170688
US.HWUT.BHZ.00 2020-03-17T16:18:33.13 10.0 negative automatic P 41 80.4392 -1.9407 0.163144
US.MNTX.BHZ.00 2020-03-17T16:18:31.65 10.0 negative automatic P 53 79.9539 -0.555576 0.171338
US.HLID.BHZ.00 2020-03-17T16:18:29.90 10.0 negative automatic P 39 79.753 -1.45054 0.161882
AT.CRAG.BHZ. 2020-03-17T16:18:29.54 10.0 negative automatic P 21 78.9428 2.90566 0.181533
IU.INCN.BHZ.00 2020-03-17T16:18:25.72 10.0 positive automatic P 315 78.6408 0.746597 0.175373
US.DUG.BHZ.00 2020-03-17T16:18:24.98 10.0 negative automatic P 42 78.8873 -1.59854 0.175102
US.BMO.BHZ.00 2020-03-17T16:18:23.90 10.0 negative automatic P 36 78.8178 -2.23601 0.170001
US.HAWA.BHZ.00 2020-03-17T16:18:22.60 10.0 positive automatic P 34 78.5322 -1.82885 0.178336
US.ELK.BHZ.00 2020-03-17T16:18:18.23 10.0 negative automatic P 41 77.6544 -1.65359 0.199939
US.WUAZ.BHZ.00 2020-03-17T16:18:17.65 10.0 positive automatic P 47 77.3933 -0.665793 0
MY.SBM.BHZ. 2020-03-17T16:18:16.62 10.0 positive automatic P 277 76.8904 1.36332 0.205207
US.NLWA.BHZ.00 2020-03-17T16:18:14.50 10.0 positive automatic P 31 76.9378 -1.09079 0.186926
IU.TATO.BHZ.00 2020-03-17T16:18:13.02 10.0 negative automatic P 301 76.6109 -0.647599 0.198584
US.WVOR.BHZ.00 2020-03-17T16:18:11.98 10.0 negative automatic P 38 76.5902 -1.77928 0.192233
IU.TUC.BHZ.00 2020-03-17T16:18:10.87 10.0 negative automatic P 50 76.1978 -0.583426 0.209768
II.KDAK.BHZ.00 2020-03-17T16:18:05.95 10.0 negative automatic P 11 75.8054 -3.14067 0.213773
IU.YSS.BHZ.00 2020-03-17T16:18:02.60 10.0 positive automatic P 330 75.0272 -2.01341 0.219247
US.TPNV.BHZ.00 2020-03-17T16:18:02.95 10.0 positive automatic P 43 74.8541 -0.918419 0.223638
MY.KKM.BHZ. 2020-03-17T16:18:00.87 10.0 positive automatic P 281 74.209 0.882905 0.222597
JP.JKA.BHZ. 2020-03-17T16:17:53.75 10.0 negative automatic sP 326 71.0095 5.38732 0
JP.JSU.BHZ. 2020-03-17T16:17:51.25 10.0 negative automatic P 311 72.8263 -0.532468 0.254387
II.PFO.BHZ.00 2020-03-17T16:17:51.72 10.0 negative automatic P 46 72.8391 -0.290058 0
IU.SLBS.BHZ.00 2020-03-17T16:17:51.52 10.0 positive automatic P 58 72.734 0.21389 0.243558
BK.CMB.BHZ.00 2020-03-17T16:17:50.30 10.0 negative automatic P 40 72.8449 -1.64934 0.226547
MX.SRIG.BHZ. 2020-03-17T16:17:50.27 10.0 positive automatic P 54 72.632 -0.294928 0
GE.JAGI.BHZ. 2020-03-17T16:17:46.12 10.0 positive automatic P 266 72.0237 -0.831421 0.245635
JP.JOW.BHZ. 2020-03-17T16:17:46.80 10.0 positive automatic P 306 72.0598 -0.376019 0.256924
JP.JTM.BHZ. 2020-03-17T16:17:45.70 10.0 positive automatic P 324 71.6249 1.14884 0.244407
JP.JMN.BHZ. 2020-03-17T16:17:44.80 10.0 negative automatic P 315 71.6593 -0.0300496 0.249587
BK.SAO.BHZ.00 2020-03-17T16:17:42.30 10.0 positive automatic P 41 71.3981 -0.91804 0.249604
JP.JGF.BHZ. 2020-03-17T16:17:37.00 10.0 positive automatic P 318 70.4851 -0.717781 0.275038
IU.MAJO.BHZ.00 2020-03-17T16:17:36.97 10.0 positive automatic P 320 70.538 -1.04063 0.126655
IU.CASY.BHZ.00 2020-03-17T16:17:36.77 10.0 negative automatic P 205 70.0272 1.95331 0
IU.ADK.BHZ.00 2020-03-17T16:17:24.47 10.0 positive automatic P 357 68.2545 0.630292 0.291346
AU.MORW.BHZ. 2020-03-17T16:17:14.02 10.0 positive automatic P 245 66.5008 1.25377 0.305443
GE.LUWI.BHZ. 2020-03-17T16:17:08.72 10.0 negative automatic P 276 65.7736 0.671265 0.317786
IU.NWAO.BHZ.00 2020-03-17T16:17:05.75 10.0 positive automatic P 241 65.1379 1.74344 0.329386
GE.MMRI.BHZ. 2020-03-17T16:16:57.32 10.0 positive automatic P 268 64.2316 -0.721399 0.337014
IU.MBWA.BHZ.00 2020-03-17T16:16:57.55 10.0 positive automatic P 254 64.1827 -0.184152 0.333839
IU.SBA.BHZ.00 2020-03-17T16:16:49.42 10.0 positive automatic P 185 62.4574 3.13691 0.344189
GE.SANI.BHZ. 2020-03-17T16:16:44.72 10.0 positive automatic P 276 62.4042 -1.20353 0.352517
GE.SOEI.BHZ. 2020-03-17T16:16:44.42 10.0 positive automatic P 267 62.0206 0.892597 0.365568
GE.TNTI.BHZ. 2020-03-17T16:16:42.32 10.0 positive automatic P 280 61.9713 -0.703779 0.247901
GE.BNDI.BHZ. 2020-03-17T16:16:15.17 10.0 positive automatic P 275 57.9455 -0.205206 0.421238
GE.FAKI.BHZ. 2020-03-17T16:16:02.37 10.0 positive automatic P 278 56.1772 -0.510422 0.457008
AU.HTT.BHZ. 2020-03-17T16:14:54.27 10.0 positive automatic P 239 47.0623 -0.575196 0.589248
AU.COEN.BHZ. 2020-03-17T16:14:22.70 10.0 negative automatic P 267 43.0604 -0.260396 0.673407
AU.TOO.BHZ.00 2020-03-17T16:14:20.75 10.0 positive automatic P 232 42.8222 -0.329944 0.693859
AU.MANU.BHZ.00 2020-03-17T16:14:15.73 10.0 positive automatic P 285 42.2484 -0.612101 0.672537
AU.QLP.BHZ. 2020-03-17T16:14:09.72 10.0 negative automatic P 248 41.6341 -1.61148 0.699459
G.KIP.BHZ.00 2020-03-17T16:14:01.32 10.0 positive automatic P 21 40.1677 2.09305 0.735307
IU.PMG.BHZ.00 2020-03-17T16:13:58.02 10.0 positive automatic P 275 40.143 -0.998881 0.710693
IU.POHA.BHZ.00 2020-03-17T16:13:56.75 10.0 negative automatic P 25 39.5682 2.1741 0.729586
G.CAN.BHZ.00 2020-03-17T16:13:53.00 10.0 positive automatic P 234 39.4352 -0.23731 0.758223
IU.CTAO.BHZ.00 2020-03-17T16:13:53.15 10.0 negative automatic P 258 39.5584 -1.0622 0.755832
AU.RABL.BHZ.00 2020-03-17T16:13:29.30 10.0 positive automatic P 285 37.0029 -3.37689 0.705429
AU.ARMA.BHZ. 2020-03-17T16:13:22.72 10.0 negative automatic P 240 35.8948 -0.651363 0.818802
AU.EIDS.BHZ. 2020-03-17T16:13:17.02 10.0 negative automatic P 249 35.3826 -1.79208 0.829113
NZ.ODZ.HHZ.10 2020-03-17T16:12:51.53 10.0 positive automatic P 203 32.1882 0.472338 0.888597
NZ.KHZ.HHZ.10 2020-03-17T16:12:21.98 10.0 negative automatic P 202 28.8611 0.342156 0.966184
IU.HNR.BHZ.00 2020-03-17T16:12:14.02 10.0 negative automatic P 281 27.9671 0.343539 0.952381
NZ.URZ.HHZ.10 2020-03-17T16:11:37.62 10.0 positive automatic P 201 23.9181 0.567516 0.881057
IU.XMAS.BHZ.00 2020-03-17T16:11:36.22 10.0 negative automatic P 40 23.3998 4.03993 0.941176
NZ.OUZ.HHZ.10 2020-03-17T16:11:27.83 10.0 positive automatic P 211 22.8115 1.84663 0.970874
G.PPTF.BHZ.00 2020-03-17T16:11:16.80 10.0 negative automatic P 97 21.6808 2.74709 0.909091
ND.ONTNC.BHZ.00 2020-03-17T16:11:08.19 10.0 positive automatic P 250 21.01 1.46075 0.888889
G.SANVU.BHZ.00 2020-03-17T16:10:52.40 10.0 positive automatic P 269 19.8211 -1.41771 0.727273
ND.MARNC.BHZ.00 2020-03-17T16:10:47.95 10.0 positive automatic P 251 19.4022 -1.2909 0.833333
IU.RAR.BHZ.00 2020-03-17T16:09:21.92 10.0 negative automatic P 115 12.7588 -2.80512 0.97561
IU.FUNA.BHZ.00 2020-03-17T16:09:07.15 10.0 negative automatic P 312 11.4166 0.77419 0.97561
II.MSVF.BHZ.00 2020-03-17T16:08:44.12 10.0 positive automatic P 260 9.4367 4.72207 0.888889
AU.NIUE.BHZ. 2020-03-17T16:07:17.12 10.0 positive automatic P 143 3.5495 -1.32093 0.963855
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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