Earthquake with magnitude of Mwp 6.0 on date 05-08-2019 and time 11:01:06 (Italy) in region Tonga Islands [Sea: Tonga]

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

  • 05-08-2019 09:01:06 (UTC)
  • 05-08-2019 11:01:06 (UTC +02:00) Italian time
  • 05-08-2019 22:01:06 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -18.39, -174.12 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 5.1
Mwp 6.0

Mwpd 6.1
2019-08-05
09:01:06
-18.39 -174.12 20 2019-08-05
09:25:45
Sala Sismica INGV-Roma 71189431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-05 09:01:06
Latitude -18.39
Longitude -174.12
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 71189431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 19075
Semi-minor axis of confidence ellipse (meter) 3201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 343
Circular confidence region, given by single value of horizontal uncertainty (meter) 15578.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97.151
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.19708
Epicentral distance of station closest to the epicenter (degree) 4.03246
Epicentral distance of station farthest from the epicenter (degree) 89.74125
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 17
Type of magnitude Mwpd
Reference to an origin 71189431
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-08-05 09:25:45

Mwp:6

Field Value
Value 6
Uncertainty 0.1
Num. used stations 21
Type of magnitude Mwp
Reference to an origin 71189431
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-08-05 09:25:45

mb:5.1

Field Value
Value 5.1
Uncertainty 0.1
Num. used stations 26
Type of magnitude mb
Reference to an origin 71189431
Agency INGV
Autore Auto added
Time of creation (UTC) 2019-08-05 09:25:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.SNAA.BHZ. 2019-08-05T09:14:02.11 10.0 negative automatic P 177 89.7412 0.239741 0.0895014
US.JCT.BHZ.00 2019-08-05T09:13:49.03 10.0 positive automatic P 56 86.4976 2.66202 0.10576
US.BW06.BHZ.00 2019-08-05T09:13:42.25 10.0 positive automatic P 42 85.1187 2.44015 0.121785
US.BOZ.BHZ.00 2019-08-05T09:13:40.88 10.0 positive automatic P 39 85.3324 0.10616 0.113858
IU.COLA.BHZ.00 2019-08-05T09:13:39.47 10.0 positive automatic P 11 85.6507 -2.64596 0.126232
US.AHID.BHZ.00 2019-08-05T09:13:35.10 10.0 positive automatic P 41 84.15 0.22415 0.119857
IU.ANMO.BHZ.00 2019-08-05T09:13:32.32 10.0 positive automatic P 50 83.3977 1.31498 0.13973
US.HWUT.BHZ.00 2019-08-05T09:13:30.90 10.0 positive automatic P 42 83.2456 0.683916 0.133317
US.MNTX.BHZ.00 2019-08-05T09:13:29.23 10.0 negative automatic P 53 82.6996 2.0843 0.145509
US.HLID.BHZ.00 2019-08-05T09:13:27.00 10.0 positive automatic P 39 82.5581 0.359589 0.140246
US.BMO.BHZ.00 2019-08-05T09:13:23.63 10.0 negative automatic P 37 81.6167 2.02476 0
US.ELK.BHZ.00 2019-08-05T09:13:17.70 10.0 negative automatic P 41 80.4613 2.07519 0.113808
IU.TUC.BHZ.00 2019-08-05T09:13:10.02 10.0 negative automatic P 50 78.9683 2.72356 0.149221
US.WVOR.BHZ.00 2019-08-05T09:13:09.63 10.0 positive automatic P 38 79.3933 -0.072944 0.166797
NN.PRN.HHZ. 2019-08-05T09:13:06.97 10.0 positive automatic P 44 78.7043 1.03032 0.17403
US.TPNV.BHZ.00 2019-08-05T09:13:01.38 10.0 negative automatic P 44 77.6577 1.20912 0.0953593
IU.SBA.BHZ.00 2019-08-05T09:11:13.12 10.0 negative automatic P 185 60.1901 1.80506 0.399163
GT.VNDA.BHZ.00 2019-08-05T09:11:12.88 10.0 negative automatic P 186 60.3068 0.744838 0.388504
AU.MTN.BHZ. 2019-08-05T09:10:17.80 10.0 negative automatic P 268 52.8287 -1.13041 0.50244
AU.HTT.BHZ. 2019-08-05T09:09:12.40 10.0 positive automatic P 241 44.4092 -1.86268 0.627346
AU.QLP.BHZ. 2019-08-05T09:08:29.40 10.0 positive automatic P 250 39.1622 -1.8533 0.763541
IU.CTAO.BHZ.00 2019-08-05T09:08:13.60 10.0 negative automatic P 261 37.361 -2.51419 0.7715
AU.ARMA.BHZ. 2019-08-05T09:07:40.72 10.0 positive automatic P 242 33.2634 -0.262376 0.823992
AU.EIDS.BHZ. 2019-08-05T09:07:35.90 10.0 positive automatic P 252 32.9356 -2.07012 0.869042
G.DZM.BHZ.00 2019-08-05T09:05:23.95 10.0 positive automatic P 255 18.5878 3.12083 0.930233
II.MSVF.BHZ.00 2019-08-05T09:02:54.72 10.0 positive automatic P 274 7.4654 1.98471 0.909091
IU.AFI.BHZ.00 2019-08-05T09:02:17.85 10.0 positive automatic P 27 5.0117 -1.16904 0.952381
AU.NIUE.BHZ. 2019-08-05T09:02:06.15 10.0 positive automatic P 101 4.0325 0.692128 0.930233
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