Earthquake with magnitude of Mwp 6.1 on date 15-05-2020 and time 16:49:23 (Italy) in region Tonga [Sea]

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

  • 15-05-2020 14:49:23 (UTC)
  • 15-05-2020 16:49:23 (UTC +02:00) Italian time
  • 16-05-2020 03:49:23 (UTC +13:00) local time in the region of the earthquake (Pacific/Apia)

and geographic coordinates (lat, lon) -15.7, -172.79 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 5.2
Mwp 6.1

Mwpd 6.2
2020-05-15
14:49:23
-15.7 -172.79 20 2020-05-15
15:25:23
Sala Sismica INGV-Roma 79162481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-15 14:49:23
Latitude -15.70
Longitude -172.79
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 79162481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 17469
Semi-minor axis of confidence ellipse (meter) 14195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 14141.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45.2658
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 70
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.09258
Epicentral distance of station closest to the epicenter (degree) 4.33942
Epicentral distance of station farthest from the epicenter (degree) 95.3346
Number of stations at which the event was observed 66
Number of stations from which data was used for origin computation 66
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 11
Type of magnitude Mwpd
Reference to an origin 79162481
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-15 15:25:23

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 13
Type of magnitude Mwp
Reference to an origin 79162481
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-15 15:25:23

mb:5.2

Field Value
Value 5.2
Uncertainty 0.1
Num. used stations 48
Type of magnitude mb
Reference to an origin 79162481
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-15 15:25:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.CHTO.BHZ.00 2020-05-15T15:02:36.70 10.0 positive automatic P 289 93.4221 0.785125 0.0688715
US.SCIA.BHZ.00 2020-05-15T15:02:36.63 10.0 negative automatic PcP 47 92.9221 2.39959 0
US.VBMS.BHZ.00 2020-05-15T15:02:35.33 10.0 negative automatic pP 57 91.9845 -0.40927 0
US.HDIL.BHZ.00 2020-05-15T15:02:34.90 10.0 positive automatic PcP 49 95.3346 -10.0193 0
GE.SNAA.BHZ. 2020-05-15T15:02:33.21 10.0 positive automatic P 177 92.3579 2.13394 0.0750927
US.ECSD.BHZ.00 2020-05-15T15:02:29.20 10.0 negative automatic PcP 45 91.1889 2.63244 0
GE.GSI.BHZ. 2020-05-15T15:02:21.87 10.0 positive automatic P 271 90.0012 1.85977 0.0898268
CN.INK.BHZ. 2020-05-15T15:02:11.95 10.0 positive automatic P 14 88.6163 -1.55215 0.0937732
IU.BILL.BHZ.00 2020-05-15T15:01:54.67 10.0 positive automatic P 352 85.1066 -1.80437 0.121874
US.EGMT.BHZ.00 2020-05-15T15:01:54.63 10.0 positive automatic P 37 84.7857 -0.361233 0.122935
US.AMTX.BHZ.00 2020-05-15T15:01:52.38 10.0 positive automatic P 51 84.2013 0.348341 0.131707
US.RLMT.BHZ.00 2020-05-15T15:01:49.58 10.0 positive automatic P 39 83.6156 0.357745 0.130451
US.ISCO.BHZ.00 2020-05-15T15:01:49.13 10.0 positive automatic P 45 83.4663 0.558081 0.145873
US.SDCO.BHZ.00 2020-05-15T15:01:44.63 10.0 positive automatic P 47 82.6252 0.444926 0.144469
US.BOZ.BHZ.00 2020-05-15T15:01:43.03 10.0 positive automatic P 38 82.433 0.013536 0.144424
IU.COLA.BHZ.00 2020-05-15T15:01:42.70 10.0 positive automatic P 10 82.7754 -1.85808 0.150047
US.BW06.BHZ.00 2020-05-15T15:01:41.90 10.0 positive automatic P 41 82.261 -0.323411 0.150931
US.MSO.BHZ.00 2020-05-15T15:01:38.50 10.0 positive automatic P 36 81.7523 -0.885553 0.150084
AT.SKAG.BHZ. 2020-05-15T15:01:35.16 10.0 positive automatic P 18 81.0655 -0.393248 0.162098
IU.ANMO.BHZ.00 2020-05-15T15:01:34.67 10.0 positive automatic P 50 80.6842 0.862708 0.166676
IU.MA2.BHZ.00 2020-05-15T15:01:32.27 10.0 positive automatic P 342 80.8582 -2.21362 0.149297
US.MNTX.BHZ.00 2020-05-15T15:01:31.55 10.0 negative automatic P 53 80.0617 1.33113 0.17236
US.HLID.BHZ.00 2020-05-15T15:01:28.75 10.0 positive automatic P 39 79.6661 0.441813 0.164416
MX.ZAIG.BHZ. 2020-05-15T15:01:28.76 10.0 negative automatic pP 62 78.7118 -0.891043 0
US.WRAK.BHZ.00 2020-05-15T15:01:27.23 10.0 positive automatic P 21 79.6375 -0.63721 0.176288
AK.GAMB.BHZ. 2020-05-15T15:01:26.61 10.0 negative automatic P 0 79.4775 -0.368535 0
US.BMO.BHZ.00 2020-05-15T15:01:22.38 10.0 positive automatic P 37 78.6993 -0.537037 0.17681
AT.CRAG.BHZ. 2020-05-15T15:01:21.80 10.0 positive automatic P 22 78.6259 -0.519345 0.18282
IU.TUC.BHZ.00 2020-05-15T15:01:12.75 10.0 negative automatic P 50 76.2679 3.46405 0.19315
MX.HSIG.BHZ. 2020-05-15T15:01:03.01 10.0 negative automatic pP 53 74.5669 -2.79487 0
II.KDAK.BHZ.00 2020-05-15T15:01:02.32 10.0 positive automatic P 11 75.3584 -1.63238 0.208566
IU.YSS.BHZ.00 2020-05-15T15:00:56.85 10.0 positive automatic P 330 74.2588 -0.74046 0.232661
IU.PET.BHZ.00 2020-05-15T15:00:48.12 10.0 positive automatic P 342 72.9964 -2.04505 0.225013
JP.JKA.BHZ. 2020-05-15T15:00:45.85 10.0 positive automatic sP 326 70.2274 4.83563 0
JP.JTM.BHZ. 2020-05-15T15:00:36.20 10.0 positive automatic P 325 70.8401 -1.0295 0.25284
IU.CASY.BHZ.00 2020-05-15T15:00:35.37 10.0 positive automatic P 205 70.3038 1.42803 0.258685
IU.MAJO.BHZ.00 2020-05-15T15:00:29.07 10.0 positive automatic P 320 69.7446 -1.50371 0.264851
JP.JGF.BHZ. 2020-05-15T15:00:28.80 10.0 positive automatic P 318 69.6905 -1.46866 0.284412
AK.ATKA.BHZ. 2020-05-15T15:00:16.61 10.0 positive automatic P 359 67.9105 -2.48398 0.297483
AU.MORW.BHZ. 2020-05-15T15:00:08.70 10.0 positive automatic P 245 66.2311 0.227693 0.327056
GE.LUWI.BHZ. 2020-05-15T15:00:00.62 10.0 positive automatic P 276 65.1518 -0.835316 0.220318
IU.MBWA.BHZ.00 2020-05-15T14:59:52.02 10.0 positive automatic P 254 63.798 -0.607284 0.342521
GT.VNDA.BHZ.00 2020-05-15T14:59:50.85 10.0 positive automatic P 186 63.1095 2.78015 0.35953
IU.SBA.BHZ.00 2020-05-15T14:59:50.67 10.0 positive automatic P 185 62.9706 3.53819 0.353156
GE.SOEI.BHZ. 2020-05-15T14:59:41.12 10.0 positive automatic P 267 61.4839 3.78018 0.364393
AU.HTT.BHZ. 2020-05-15T14:57:49.85 10.0 positive automatic P 239 46.8706 -0.932736 0.62815
II.TAU.BHZ.00 2020-05-15T14:57:24.67 10.0 negative automatic P 223 43.5109 0.674146 0.650161
AU.TOO.BHZ.00 2020-05-15T14:57:16.78 10.0 positive automatic P 231 42.7334 -1.01321 0.69551
AU.COEN.BHZ. 2020-05-15T14:57:15.70 10.0 positive automatic P 266 42.5319 -0.406181 0.691038
AU.QLP.BHZ. 2020-05-15T14:57:04.72 10.0 negative automatic P 247 41.3259 -1.512 0.659165
G.KIP.BHZ.00 2020-05-15T14:56:53.82 10.0 negative automatic P 22 39.8473 -0.175513 0.724367
G.CAN.BHZ.00 2020-05-15T14:56:49.00 10.0 negative automatic P 233 39.321 -0.716915 0.725877
AU.ARMA.BHZ. 2020-05-15T14:56:18.75 10.0 positive automatic P 239 35.6912 -0.303227 0.83269
NZ.ODZ.HHZ.10 2020-05-15T14:55:51.08 10.0 positive automatic P 202 32.492 -0.0681803 0.878179
NZ.KHZ.HHZ.10 2020-05-15T14:55:22.51 10.0 negative automatic P 201 29.1774 0.639149 0.97561
NZ.URZ.HHZ.10 2020-05-15T14:54:37.91 10.0 negative automatic P 200 24.25 0.404007 0.930233
NZ.OUZ.HHZ.10 2020-05-15T14:54:27.19 10.0 positive automatic P 209 23.0129 1.6458 0.930233
G.PPTF.BHZ.00 2020-05-15T14:54:21.85 10.0 negative automatic P 98 22.3125 3.61939 0.909091
ND.KOUNC.BHZ.00 2020-05-15T14:54:16.20 10.0 positive automatic P 254 22.3003 -1.79445 0.909091
IU.TARA.BHZ.00 2020-05-15T14:54:15.60 10.0 positive automatic P 319 22.1436 -0.71184 0.987654
ND.ONTNC.BHZ.00 2020-05-15T14:53:59.59 10.0 negative automatic P 248 20.6849 -1.04691 0.909091
G.SANVU.BHZ.00 2020-05-15T14:53:44.90 10.0 positive automatic P 268 19.2701 -0.325512 0.769231
ND.MARNC.BHZ.00 2020-05-15T14:53:41.45 10.0 positive automatic P 249 19.0605 -1.47698 0.714286
IU.RAR.BHZ.00 2020-05-15T14:52:29.80 10.0 positive automatic P 116 13.5089 -2.60007 0.909091
II.MSVF.BHZ.00 2020-05-15T14:51:37.37 10.0 negative automatic P 256 9.0073 6.43599 0.816327
AU.NIUE.BHZ. 2020-05-15T14:50:24.75 10.0 negative automatic P 141 4.3394 -1.98009 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