Earthquake with magnitude of Mwp 6.4 on date 24-09-2016 and time 23:07:15 (Italy) in region Tonga Islands [Sea: Tonga]

A magnitude Mwp 6.4 earthquake occured in region: Tonga Islands [Sea: Tonga], on

  • 24-09-2016 21:07:15 (UTC)
  • 24-09-2016 23:07:15 (UTC +02:00) Italian time
  • 25-09-2016 10:07:15 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -18.13, -174.95 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.

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 5.6
Mwp 6.4

Mwpd 6.4
2016-09-24
21:07:15
-18.13 -174.95 196 2016-09-24
21:22:46
Sala Sismica INGV-Roma 29488971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-24 21:07:15
Latitude -18.13
Longitude -174.95
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 29488971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 12400
Semi-minor axis of confidence ellipse (meter) 6226
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 337
Circular confidence region, given by single value of horizontal uncertainty (meter) 10742.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43.2298
Number of associated phases, regardless of their use for origin computation 115
Number of defining phases 115
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.52281
Epicentral distance of station closest to the epicenter (degree) 4.85065
Epicentral distance of station farthest from the epicenter (degree) 89.62815
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:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 52
Type of magnitude Mwp
Reference to an origin 29488971
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-09-24 21:22:46

Mwpd:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 43
Type of magnitude Mwpd
Reference to an origin 29488971
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-09-24 21:22:46

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 61
Type of magnitude mb
Reference to an origin 29488971
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-09-24 21:22:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.WMOK.BHZ.00 2016-09-24T21:19:50.90 10.0 positive automatic P 53 89.4595 2.23152 0.0944765
IU.RSSD.BHZ.00 2016-09-24T21:19:49.87 10.0 negative automatic P 43 89.6282 0.134858 0
US.TPNV.BHZ.00 2016-09-24T21:19:43.50 10.0 positive automatic pP 44 78.0209 5.36062 0
US.JCT.BHZ.00 2016-09-24T21:19:38.63 10.0 negative automatic PcP 57 87.0102 -0.458597 0
IU.BILL.BHZ.00 2016-09-24T21:19:37.57 10.0 negative automatic P 353 87.2591 -0.721698 0
G.COYC.BHZ.00 2016-09-24T21:19:34.35 10.0 positive automatic P 137 85.7451 3.41669 0.114574
IU.PAYG.BHZ.00 2016-09-24T21:19:34.07 10.0 negative automatic PcP 89 84.7139 5.16552 0
IW.SMCO.BHZ.00 2016-09-24T21:19:30.77 10.0 negative automatic P 46 85.4271 0.84809 0.125034
IU.COLA.BHZ.00 2016-09-24T21:19:28.47 10.0 negative automatic P 11 85.5521 -1.50471 0.121241
AT.SKAG.BHZ. 2016-09-24T21:19:23.50 10.0 negative automatic P 19 84.0313 1.12076 0.136788
IU.ANMO.BHZ.00 2016-09-24T21:19:22.87 10.0 positive automatic P 50 83.8345 1.19357 0.141037
BK.SAO.BHZ.00 2016-09-24T21:19:22.65 10.0 negative automatic pP 42 74.5371 4.73049 0
CN.PNT.BHZ. 2016-09-24T21:19:18.80 10.0 positive automatic P 33 83.3125 -0.00388189 0.145444
UW.BRAN.BHZ. 2016-09-24T21:19:14.85 10.0 positive automatic P 36 82.5878 -0.335661 0
AT.TTA.BHZ. 2016-09-24T21:19:13.64 10.0 positive automatic P 9 82.4153 -0.628582 0
US.HAWA.BHZ.00 2016-09-24T21:19:09.90 10.0 positive automatic P 35 81.561 0.182562 0.151697
US.WUAZ.BHZ.00 2016-09-24T21:19:05.95 10.0 positive automatic P 48 80.5901 1.13926 0.160003
JP.JNU.BHZ. 2016-09-24T21:19:04.95 10.0 negative automatic pP 315 72.7936 -2.64994 0
US.NLWA.BHZ.00 2016-09-24T21:19:01.65 10.0 negative automatic P 32 79.9108 0.627041 0.165946
US.WVOR.BHZ.00 2016-09-24T21:19:00.13 10.0 positive automatic P 39 79.6821 0.21053 0.180113
IU.TUC.BHZ.00 2016-09-24T21:18:59.72 10.0 positive automatic P 51 79.4122 1.33164 0.172313
NN.PRN.HHZ. 2016-09-24T21:18:57.62 10.0 positive automatic P 44 79.0695 0.988748 0
IU.INCN.BHZ.00 2016-09-24T21:18:52.12 10.0 negative automatic P 316 78.1379 0.823033 0.192798
US.TPNV.BHZ.00 2016-09-24T21:18:51.50 10.0 positive automatic P 44 78.0209 0.578033 0.191664
MX.HSIG.BHZ. 2016-09-24T21:18:49.84 10.0 positive automatic P 54 77.6792 1.03957 0
BK.HUMO.BHZ.00 2016-09-24T21:18:46.37 10.0 positive automatic P 36 77.2866 -0.313158 0.138549
AU.XMI.BHZ. 2016-09-24T21:18:45.32 10.0 positive automatic P 263 76.7611 1.61799 0.206519
IU.SLBS.BHZ.00 2016-09-24T21:18:41.32 10.0 positive automatic P 59 75.95 2.07904 0.214824
BK.CMB.BHZ.00 2016-09-24T21:18:39.60 10.0 positive automatic P 41 75.9774 0.220953 0.219773
IU.YSS.BHZ.00 2016-09-24T21:18:35.65 10.0 positive automatic P 332 75.3806 -0.247141 0.220751
IU.TATO.BHZ.00 2016-09-24T21:18:35.77 10.0 negative automatic P 303 75.3859 -0.159364 0.205982
MY.SBM.BHZ. 2016-09-24T21:18:32.22 10.0 negative automatic P 278 74.5201 1.23101 0.229862
BK.SAO.BHZ.00 2016-09-24T21:18:31.80 10.0 positive automatic P 42 74.5371 0.694471 0.22176
JP.JTU.BHZ. 2016-09-24T21:18:30.90 10.0 negative automatic P 315 74.6119 -0.588525 0.223558
JP.YOJ.BHZ. 2016-09-24T21:18:27.80 10.0 negative automatic P 303 73.9366 0.213787 0.236144
JP.JEW.BHZ. 2016-09-24T21:18:21.85 10.0 negative automatic P 328 72.9636 -0.0853437 0.24107
JP.JHS.BHZ. 2016-09-24T21:18:19.10 10.0 negative automatic P 317 72.4551 0.105546 0.252477
IU.QSPA.BHZ.00 2016-09-24T21:18:17.42 10.0 negative automatic P 180 71.8092 1.84465 0.266104
JP.JSU.BHZ. 2016-09-24T21:18:17.05 10.0 negative automatic P 313 72.1371 -0.0482274 0.256055
JP.JTM.BHZ. 2016-09-24T21:18:13.25 10.0 negative automatic P 326 71.6745 -1.05473 0.223973
II.ERM.BHZ.00 2016-09-24T21:18:12.92 10.0 negative automatic P 328 71.4993 -0.321983 0.251335
JP.JSD.BHZ. 2016-09-24T21:18:11.40 10.0 negative automatic P 323 71.2962 -0.646161 0.259457
JP.JMN.BHZ. 2016-09-24T21:18:11.65 10.0 negative automatic P 317 71.1726 0.275629 0.267058
JP.JOW.BHZ. 2016-09-24T21:18:11.40 10.0 negative automatic P 308 71.0871 0.595241 0.26181
IU.MAJO.BHZ.00 2016-09-24T21:18:05.22 10.0 negative automatic P 322 70.312 -0.938282 0.27707
JP.JGF.BHZ. 2016-09-24T21:18:04.60 10.0 negative automatic P 320 70.19 -0.853211 0.278505
G.INU.BHZ.00 2016-09-24T21:18:04.81 10.0 negative automatic P 320 70.22 -0.745319 0.278152
IU.ADK.BHZ.00 2016-09-24T21:18:02.77 10.0 positive automatic P 359 70.0292 -1.62567 0.267655
JP.JMM.BHZ. 2016-09-24T21:18:01.70 10.0 negative automatic P 324 69.7411 -0.932673 0.283814
JP.JYT.BHZ. 2016-09-24T21:17:57.10 10.0 negative automatic P 322 68.9328 -0.569342 0.293502
JP.JHJ2.BHZ. 2016-09-24T21:17:45.10 10.0 negative automatic P 320 67.0138 -0.629254 0.309774
AU.GIRL.BHZ. 2016-09-24T21:17:40.35 10.0 negative automatic P 253 65.9174 1.55859 0.335063
II.KAPI.BHZ.00 2016-09-24T21:17:32.82 10.0 negative automatic P 273 64.986 -0.0291805 0.277149
AU.MORW.BHZ. 2016-09-24T21:17:22.15 10.0 negative automatic P 246 63.3351 0.0264981 0.352461
IU.NWAO.BHZ.00 2016-09-24T21:17:13.07 10.0 negative automatic P 242 61.9366 0.178467 0.375208
IU.MBWA.BHZ.00 2016-09-24T21:17:07.65 10.0 negative automatic P 255 61.1554 0.00763725 0.399777
IU.SBA.BHZ.00 2016-09-24T21:17:05.45 10.0 negative automatic P 184 60.3815 3.04825 0.401166
GT.VNDA.BHZ.00 2016-09-24T21:17:05.30 10.0 negative automatic P 186 60.4805 2.21628 0.404535
AU.FITZ.BHZ. 2016-09-24T21:16:33.86 10.0 negative automatic P 260 56.1941 0.430532 0.479043
AU.WRKA.BHZ. 2016-09-24T21:16:09.67 10.0 negative automatic P 252 52.8592 0.133232 0.53915
AU.FORT.BHZ. 2016-09-24T21:16:08.77 10.0 negative automatic P 245 52.838 -0.533534 0.526503
AU.MTN.BHZ. 2016-09-24T21:16:02.90 10.0 negative automatic P 268 52.0561 -0.661413 0.520499
IU.GUMO.BHZ.00 2016-09-24T21:15:54.17 10.0 positive automatic P 306 50.7567 0.242175 0.517311
AU.KDU.BHZ. 2016-09-24T21:15:52.45 10.0 negative automatic P 268 50.8192 -1.92917 0.553224
II.WRAB.BHZ.00 2016-09-24T21:15:30.42 10.0 negative automatic P 259 47.771 -0.948987 0.564626
AU.HTT.BHZ. 2016-09-24T21:15:00.05 10.0 positive automatic P 240 43.8522 -0.755675 0.520075
AU.MCQ.BHZ. 2016-09-24T21:14:43.57 10.0 positive automatic P 203 41.4946 1.83507 0.670838
AU.COEN.BHZ. 2016-09-24T21:14:32.60 10.0 negative automatic P 270 40.377 -0.0686786 0.731338
II.TAU.BHZ.00 2016-09-24T21:14:31.82 10.0 positive automatic P 224 40.3221 -0.366591 0.741099
AU.TOO.BHZ. 2016-09-24T21:14:25.85 10.0 negative automatic P 232 39.602 -0.498458 0.746111
AU.QLP.BHZ. 2016-09-24T21:14:17.25 10.0 negative automatic P 250 38.512 -0.00392572 0.776268
AU.MILA.BHZ. 2016-09-24T21:14:01.47 10.0 positive automatic P 232 36.6844 -0.561816 0.793705
IU.CTAO.BHZ.00 2016-09-24T21:14:01.07 10.0 negative automatic P 260 36.629 -0.420327 0.813718
G.CAN.BHZ.00 2016-09-24T21:13:57.45 10.0 negative automatic P 234 36.2119 -0.574434 0.767322
G.TAOE.BHZ.00 2016-09-24T21:13:49.82 10.0 negative automatic P 79 35.0167 1.94993 0.793579
AU.RABL.BHZ. 2016-09-24T21:13:45.17 10.0 positive automatic P 289 35.0498 -2.89301 0.717653
AU.RIV.BHZ. 2016-09-24T21:13:39.40 10.0 negative automatic P 236 34.0468 -0.0313543 0.876947
AU.ARMA.BHZ. 2016-09-24T21:13:28.30 10.0 negative automatic P 242 32.6913 0.399445 0.905664
AU.EIDS.BHZ. 2016-09-24T21:13:23.75 10.0 negative automatic P 251 32.2748 -0.372441 0.903693
NZ.ODZ.HHZ.10 2016-09-24T21:12:58.59 10.0 positive automatic P 201 29.4704 -0.938381 0.913242
AU.LHI.BHZ. 2016-09-24T21:12:38.05 10.0 negative automatic P 235 27.0121 0.334064 0.91954
NZ.KHZ.HHZ.10 2016-09-24T21:12:28.96 10.0 positive automatic P 200 26.1787 -1.31176 0.888889
IU.HNR.BHZ.00 2016-09-24T21:12:26.12 10.0 negative automatic P 286 25.8472 -1.18573 0.869565
IU.SNZO.BHZ.00 2016-09-24T21:12:15.97 10.0 negative automatic P 199 24.8099 -1.99171 0.869565
G.PPTF.BHZ.00 2016-09-24T21:12:13.60 10.0 positive automatic P 93 24.1455 1.55803 0.909091
IU.TARA.BHZ.00 2016-09-24T21:11:59.15 10.0 positive automatic P 327 22.8526 -1.01769 0.91954
IU.RAO.BHZ.00 2016-09-24T21:11:54.90 10.0 positive automatic S 193 11.4397 -3.2079 0
NZ.URZ.HHZ.10 2016-09-24T21:11:40.90 10.0 negative automatic P 197 21.286 -4.24428 0.328407
NZ.OUZ.HHZ.10 2016-09-24T21:11:30.30 10.0 positive automatic P 208 19.8822 0.0525813 0.917431
ND.KOUNC.BHZ.00 2016-09-24T21:11:28.54 10.0 negative automatic P 260 19.7275 -0.047338 0.909091
AU.NFK.BHZ. 2016-09-24T21:11:23.52 10.0 negative automatic P 232 19.0652 2.02419 0.860215
G.DZM.BHZ.00 2016-09-24T21:11:09.40 10.0 positive automatic P 254 17.8982 0.435278 0.888889
ND.ONTNC.BHZ.00 2016-09-24T21:11:09.79 10.0 negative automatic P 253 17.9287 0.630578 0.930233
ND.MARNC.BHZ.00 2016-09-24T21:10:52.69 10.0 negative automatic P 255 16.3499 0.814181 0.952381
IU.RAR.BHZ.00 2016-09-24T21:10:31.77 10.0 positive automatic P 105 14.6095 0.31039 0.909091
IU.FUNA.BHZ.00 2016-09-24T21:09:50.32 10.0 positive automatic P 329 11.1654 2.12892 0.987654
IU.RAO.BHZ.00 2016-09-24T21:09:49.67 10.0 negative automatic P 193 11.4397 -2.04252 0.963855
II.MSVF.BHZ.00 2016-09-24T21:08:54.52 10.0 negative automatic P 272 6.6694 4.61196 0.909091
IU.AFI.BHZ.00 2016-09-24T21:08:27.17 10.0 negative automatic P 36 5.2082 -3.81678 0.930233
AU.NIUE.BHZ. 2016-09-24T21:08:26.22 10.0 negative automatic P 102 4.8506 -0.0815495 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