Earthquake with magnitude of Mwp 6.1 on date 30-05-2019 and time 17:38:01 (Italy) in region Tonga [Sea]

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

  • 30-05-2019 15:38:01 (UTC)
  • 30-05-2019 17:38:01 (UTC +02:00) Italian time
  • 31-05-2019 04:38:01 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -21.77, -176.19 at 180 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 5.5
Mwp 6.1

Mwpd 6.1
2019-05-30
15:38:01
-21.77 -176.19 180 2019-05-30
15:59:18
Sala Sismica INGV-Roma 69030831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-30 15:38:01
Latitude -21.77
Longitude -176.19
Depth (km) 180 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 69030831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6078
Semi-minor axis of confidence ellipse (meter) 1861
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 334
Circular confidence region, given by single value of horizontal uncertainty (meter) 4975.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93.2957
Number of associated phases, regardless of their use for origin computation 76
Number of defining phases 76
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.72053
Epicentral distance of station closest to the epicenter (degree) 6.45748
Epicentral distance of station farthest from the epicenter (degree) 79.99357
Number of stations at which the event was observed 63
Number of stations from which data was used for origin computation 63
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 25
Type of magnitude Mwp
Reference to an origin 69030831
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-05-30 15:59:18

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0
Num. used stations 22
Type of magnitude Mwpd
Reference to an origin 69030831
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-05-30 15:59:18

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 44
Type of magnitude mb
Reference to an origin 69030831
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-05-30 15:59:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.INCN.BHZ.00 2019-05-30T15:49:49.92 10.0 positive automatic P 317 79.9936 0.204623 0
IU.SLBS.BHZ.00 2019-05-30T15:49:46.17 10.0 positive automatic P 59 78.8358 2.58363 0.173574
ND.ONTNC.BHZ.00 2019-05-30T15:49:44.04 10.0 negative automatic ScP 265 16.0869 6.34619 0
GE.PMBI.BHZ. 2019-05-30T15:49:43.32 10.0 negative automatic P 271 78.8105 0.00816595 0
IU.PET.BHZ.00 2019-05-30T15:49:36.37 10.0 negative automatic P 345 77.9171 -2.06379 0
AT.AKUT.BHZ. 2019-05-30T15:49:29.16 10.0 positive automatic P 6 76.4333 -0.990796 0.211819
IU.TATO.BHZ.00 2019-05-30T15:49:28.97 10.0 negative automatic P 304 76.4312 -1.19398 0.187501
AT.SMY.BHZ. 2019-05-30T15:49:20.54 10.0 positive automatic P 354 74.9779 -1.36482 0
JP.JNU.BHZ. 2019-05-30T15:49:18.15 10.0 negative automatic P 316 74.5653 -1.4728 0.107017
IU.ADK.BHZ.00 2019-05-30T15:49:12.75 10.0 negative automatic P 360 73.6526 -1.52362 0.236362
MY.SBM.BHZ. 2019-05-30T15:49:12.82 10.0 negative automatic P 279 73.9123 -2.97402 0.225607
JP.JSD.BHZ. 2019-05-30T15:49:12.30 10.0 negative automatic P 324 73.5216 -1.20372 0.229671
JP.JOW.BHZ. 2019-05-30T15:49:06.65 10.0 negative automatic P 310 72.4515 -0.582576 0.235629
IU.MAJO.BHZ.00 2019-05-30T15:49:05.72 10.0 negative automatic P 323 72.4744 -1.68054 0.252202
JP.JMM.BHZ. 2019-05-30T15:49:03.30 10.0 negative automatic P 326 72.0406 -1.48194 0.257085
JP.JSG.BHZ. 2019-05-30T15:48:58.50 10.0 negative automatic P 322 71.1499 -0.958973 0.233851
JP.JHJ2.BHZ. 2019-05-30T15:48:45.65 10.0 positive automatic P 321 69.0861 -1.25809 0.298701
IU.CASY.BHZ.00 2019-05-30T15:48:13.27 10.0 negative automatic P 206 63.4398 2.25842 0.363568
GE.LUWI.BHZ. 2019-05-30T15:48:07.02 10.0 negative automatic P 281 62.8451 -0.0803629 0.339297
AU.MORW.BHZ. 2019-05-30T15:47:53.20 10.0 positive automatic P 248 60.834 -0.535809 0.390171
GE.SANI.BHZ. 2019-05-30T15:47:43.67 10.0 negative automatic P 281 59.499 -0.949449 0.408774
GE.TNTI.BHZ. 2019-05-30T15:47:43.67 10.0 negative automatic P 285 59.4474 -0.60103 0.400194
IU.NWAO.BHZ.00 2019-05-30T15:47:42.30 10.0 negative automatic P 244 59.2298 -0.544302 0.412577
IU.MBWA.BHZ.00 2019-05-30T15:47:41.65 10.0 negative automatic P 258 59.1687 -0.743689 0.386478
GE.SOEI.BHZ. 2019-05-30T15:47:37.02 10.0 negative automatic P 272 58.2093 1.10357 0.437324
IU.SBA.BHZ.00 2019-05-30T15:47:28.90 10.0 positive automatic P 184 56.6658 3.93766 0.449684
GT.VNDA.BHZ.00 2019-05-30T15:47:27.73 10.0 positive automatic P 186 56.7459 2.19218 0.470379
GE.FAKI.BHZ. 2019-05-30T15:47:00.87 10.0 negative automatic P 283 53.4511 -1.08785 0.498465
AU.MTN.BHZ. 2019-05-30T15:46:41.57 10.0 negative automatic P 271 50.8429 -1.16625 0.552744
AU.WRKA.BHZ. 2019-05-30T15:46:40.97 10.0 negative automatic P 255 50.6975 -0.759861 0.555157
AU.FORT.BHZ. 2019-05-30T15:46:37.50 10.0 negative automatic P 247 50.2925 -1.12787 0.575615
NZ.KHZ.HHZ.10 2019-05-30T15:46:34.69 10.0 positive automatic S 200 22.3601 -0.637491 0
AU.KDU.BHZ. 2019-05-30T15:46:32.00 10.0 negative automatic P 272 49.6468 -0.744986 0.579659
GE.GENI.BHZ. 2019-05-30T15:46:09.37 10.0 negative automatic P 288 46.5154 -0.386906 0.19945
IU.SNZO.BHZ.00 2019-05-30T15:46:04.95 10.0 positive automatic S 199 20.9898 -7.82142 0
AU.HTT.BHZ. 2019-05-30T15:45:26.12 10.0 positive automatic P 244 41.1089 -0.685417 0.743672
AU.MANU.BHZ.00 2019-05-30T15:45:22.15 10.0 negative automatic P 294 40.5511 -0.00262809 0.727941
AU.COEN.BHZ. 2019-05-30T15:45:12.50 10.0 negative automatic P 274 39.3382 0.303154 0.67201
G.TAOE.BHZ.00 2019-05-30T15:44:55.46 10.0 positive automatic P 75 36.959 3.05178 0.770304
IU.PMG.BHZ.00 2019-05-30T15:44:54.87 10.0 negative automatic P 284 37.2808 -0.122991 0.781933
II.TAU.BHZ.00 2019-05-30T15:44:52.42 10.0 negative automatic P 226 36.9276 0.393826 0.807615
AU.TOO.BHZ.00 2019-05-30T15:44:48.48 10.0 negative automatic P 236 36.5181 -0.179514 0.835743
AU.QLP.BHZ. 2019-05-30T15:44:46.25 10.0 negative automatic P 254 36.2796 -0.317318 0.811001
IU.CTAO.BHZ.00 2019-05-30T15:44:36.17 10.0 negative automatic P 266 35.0313 0.20436 0.866713
AU.RABL.BHZ.00 2019-05-30T15:44:36.53 10.0 positive automatic P 295 35.3546 -2.18521 0.783492
AU.MILA.BHZ.00 2019-05-30T15:44:23.80 10.0 positive automatic P 235 33.5742 0.288384 0.85586
G.CAN.BHZ.00 2019-05-30T15:44:20.60 10.0 negative automatic P 238 33.2204 0.163533 0.883641
IU.RAR.BHZ.00 2019-05-30T15:44:15.72 10.0 positive automatic S 91 15.2777 -0.565847 0
AU.RIV.BHZ. 2019-05-30T15:44:03.12 10.0 positive automatic P 240 31.1253 1.0652 0.939303
AU.EIDS.BHZ. 2019-05-30T15:43:53.45 10.0 positive automatic P 257 30.1369 0.0460022 0.972643
AU.ARMA.BHZ. 2019-05-30T15:43:53.15 10.0 negative automatic P 247 30.0467 0.385201 0.832515
IU.HNR.BHZ.00 2019-05-30T15:43:14.85 10.0 positive automatic P 295 26.0226 -2.02129 0.672269
G.PPTF.BHZ.00 2019-05-30T15:43:14.30 10.0 positive automatic P 85 25.3816 3.09856 0.43956
NZ.ODZ.HHZ.10 2019-05-30T15:43:13.47 10.0 negative automatic P 202 25.6568 -0.1352 0.985222
AU.LHI.BHZ.00 2019-05-30T15:43:01.08 10.0 positive automatic P 241 24.0963 1.61976 0.963855
NZ.KHZ.HHZ.10 2019-05-30T15:42:40.30 10.0 positive automatic P 200 22.3601 -3.33446 0.970874
IU.SNZO.BHZ.00 2019-05-30T15:42:26.30 10.0 positive automatic P 199 20.9898 -3.44539 0.97561
ND.KOUNC.BHZ.00 2019-05-30T15:42:01.65 10.0 negative automatic P 270 18.2353 1.49773 0.869565
AU.NFK.BHZ.00 2019-05-30T15:41:39.38 10.0 negative automatic P 240 16.0517 3.13734 0.943396
G.DZM.BHZ.00 2019-05-30T15:41:39.15 10.0 negative automatic P 266 16.1038 2.21203 0.909091
NZ.OUZ.HHZ.10 2019-05-30T15:41:38.12 10.0 negative automatic P 211 16.1458 0.858272 0.956938
ND.ONTNC.BHZ.00 2019-05-30T15:41:38.44 10.0 negative automatic P 265 16.0869 1.82606 0.930233
IU.RAR.BHZ.00 2019-05-30T15:41:28.20 10.0 positive automatic P 91 15.2777 1.28637 0.930233
IU.FUNA.BHZ.00 2019-05-30T15:41:10.35 10.0 positive automatic P 341 13.9703 -0.414277 0.869565
AU.NIUE.BHZ. 2019-05-30T15:40:39.80 10.0 positive automatic S 66 6.4575 -6.43606 0
IU.RAO.BHZ.00 2019-05-30T15:39:46.67 10.0 positive automatic P 191 7.635 -2.25333 0.963855
II.MSVF.BHZ.00 2019-05-30T15:39:38.57 10.0 positive automatic P 306 6.7493 1.16149 0.97561
AU.NIUE.BHZ. 2019-05-30T15:39:31.72 10.0 negative automatic P 66 6.4575 -1.73654 0.963855
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