Earthquake with magnitude of Mwp 6.3 on date 18-07-2020 and time 17:32:41 (Italy) in region Tonga [Sea]

A magnitude Mwp 6.3 earthquake occured in region: Tonga [Sea], on

  • 18-07-2020 15:32:41 (UTC)
  • 18-07-2020 17:32:41 (UTC +02:00) Italian time
  • 19-07-2020 04:32:41 (UTC +13:00) local time in the region of the earthquake (Pacific/Apia)

and geographic coordinates (lat, lon) -15.42, -172.9 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 5.4
Mwp 6.3

Mwpd 6.4
2020-07-18
15:32:41
-15.42 -172.9 20 2020-07-18
15:49:02
Sala Sismica INGV-Roma 81136601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-18 15:32:41
Latitude -15.42
Longitude -172.90
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 81136601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 18498
Semi-minor axis of confidence ellipse (meter) 12972
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 14941.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67.804
Number of associated phases, regardless of their use for origin computation 96
Number of defining phases 96
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.12639
Epicentral distance of station closest to the epicenter (degree) 8.97285
Epicentral distance of station farthest from the epicenter (degree) 92.81351
Number of stations at which the event was observed 89
Number of stations from which data was used for origin computation 89
Magnitudes information

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 34
Type of magnitude Mwp
Reference to an origin 81136601
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-07-18 15:49:02

Mwpd:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 35
Type of magnitude Mwpd
Reference to an origin 81136601
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-07-18 15:49:02

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 55
Type of magnitude mb
Reference to an origin 81136601
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-07-18 15:49:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
G.HDC.BHZ.00 2020-07-18T15:45:53.15 10.0 negative automatic sP 80 91.4948 0.272401 0
US.SCIA.BHZ.00 2020-07-18T15:45:51.25 10.0 positive automatic P 47 92.8135 0.172902 0
US.VBMS.BHZ.00 2020-07-18T15:45:49.98 10.0 positive automatic PcP 57 91.9262 2.22601 0
IU.TEIG.BHZ.00 2020-07-18T15:45:47.35 10.0 positive automatic sP 69 90.4094 -0.159027 0
IU.TEIG.BHZ.00 2020-07-18T15:45:44.75 10.0 negative automatic P 69 90.4094 4.84624 0.0421534
US.ECSD.BHZ.00 2020-07-18T15:45:42.83 10.0 positive automatic P 45 91.0678 -0.207496 0.0839496
US.MIAR.BHZ.00 2020-07-18T15:45:40.33 10.0 positive automatic PcP 54 90.2084 0.154866 0
GE.GSI.BHZ. 2020-07-18T15:45:39.52 10.0 positive automatic P 271 89.8817 2.07711 0.0927168
US.KSU1.BHZ.00 2020-07-18T15:45:36.40 10.0 positive automatic PcP 49 89.4476 -0.421543 0
IU.YAK.BHZ.00 2020-07-18T15:45:33.87 10.0 positive automatic P 337 89.5008 -1.79174 0
US.NATX.BHZ.00 2020-07-18T15:45:33.13 10.0 positive automatic PcP 56 88.4444 0.763991 0
IU.HKT.BHZ.00 2020-07-18T15:45:25.57 10.0 positive automatic PcP 58 86.891 0.173488 0
US.WMOK.BHZ.00 2020-07-18T15:45:25.63 10.0 negative automatic pP 52 86.2564 -1.0821 0
GE.BKNI.BHZ. 2020-07-18T15:45:21.17 10.0 positive automatic P 271 86.2829 0.902925 0
US.WMOK.BHZ.00 2020-07-18T15:45:20.70 10.0 positive automatic P 52 86.2564 0.490748 0.110912
US.AMTX.BHZ.00 2020-07-18T15:45:10.80 10.0 positive automatic P 51 84.1136 1.22735 0.135481
US.ISCO.BHZ.00 2020-07-18T15:45:07.00 10.0 positive automatic P 46 83.3496 1.03898 0.124394
US.RLMT.BHZ.00 2020-07-18T15:45:06.78 10.0 positive automatic P 40 83.4703 0.307404 0.149439
RM.DLV.BHZ. 2020-07-18T15:45:02.62 10.0 positive automatic P 285 82.4634 1.52317 0
US.SDCO.BHZ.00 2020-07-18T15:45:02.85 10.0 positive automatic P 47 82.5178 1.23472 0.15049
IU.COLA.BHZ.00 2020-07-18T15:45:00.06 10.0 positive automatic P 10 82.5192 -1.26933 0.152269
US.BW06.BHZ.00 2020-07-18T15:44:59.05 10.0 positive automatic P 41 82.1249 -0.452526 0.153889
US.AHID.BHZ.00 2020-07-18T15:44:54.98 10.0 positive automatic P 41 81.1452 0.688322 0.1535
IU.ANMO.BHZ.00 2020-07-18T15:44:52.87 10.0 positive automatic P 50 80.5878 1.582 0.163699
AT.SKAG.BHZ. 2020-07-18T15:44:52.58 10.0 positive automatic P 18 80.8338 0.268223 0.156838
US.NEW.BHZ.00 2020-07-18T15:44:51.08 10.0 positive automatic P 34 80.6453 -0.336075 0.169017
US.MVCO.BHZ.00 2020-07-18T15:44:50.13 10.0 positive automatic P 47 80.156 1.09898 0.155074
US.HWUT.BHZ.00 2020-07-18T15:44:50.05 10.0 positive automatic P 42 80.2564 0.546338 0.164758
IU.MA2.BHZ.00 2020-07-18T15:44:49.62 10.0 positive automatic P 342 80.556 -1.24067 0.169838
US.MNTX.BHZ.00 2020-07-18T15:44:49.50 10.0 positive automatic P 53 79.9822 1.71782 0.169114
US.HLID.BHZ.00 2020-07-18T15:44:46.48 10.0 positive automatic P 39 79.518 0.980007 0.173324
AK.GAMB.BHZ. 2020-07-18T15:44:43.17 10.0 positive automatic P 1 79.1973 -0.277735 0.165247
US.DUG.BHZ.00 2020-07-18T15:44:41.90 10.0 positive automatic P 42 78.7178 0.837425 0.182804
CN.BBB.BHZ. 2020-07-18T15:44:41.90 10.0 positive automatic pP 26 77.9082 -0.876345 0
US.BMO.BHZ.00 2020-07-18T15:44:40.20 10.0 positive automatic P 37 78.5409 0.166131 0.184476
US.HAWA.BHZ.00 2020-07-18T15:44:38.50 10.0 positive automatic P 34 78.2152 0.402039 0.187573
CN.BBB.BHZ. 2020-07-18T15:44:36.23 10.0 positive automatic P 26 77.9082 -0.112125 0.174301
US.WUAZ.BHZ.00 2020-07-18T15:44:34.90 10.0 positive automatic P 47 77.3117 1.61973 0.194042
US.ELK.BHZ.00 2020-07-18T15:44:34.75 10.0 positive automatic P 41 77.4571 0.549197 0.190452
US.NLWA.BHZ.00 2020-07-18T15:44:29.50 10.0 positive automatic P 32 76.5716 0.551491 0.194545
US.WVOR.BHZ.00 2020-07-18T15:44:28.30 10.0 positive automatic P 38 76.3388 0.551043 0.192487
IU.TUC.BHZ.00 2020-07-18T15:44:27.00 10.0 negative automatic P 50 76.1748 1.25103 0.200563
NN.PRN.HHZ. 2020-07-18T15:44:25.54 10.0 positive automatic P 44 75.7586 1.07388 0.19374
US.TPNV.BHZ.00 2020-07-18T15:44:19.58 10.0 positive automatic P 44 74.7087 1.1287 0.205797
II.KDAK.BHZ.00 2020-07-18T15:44:19.50 10.0 positive automatic P 11 75.1039 -0.98501 0.218456
MX.HSIG.BHZ. 2020-07-18T15:44:18.19 10.0 positive automatic P 53 74.4887 1.25594 0
IU.SLBS.BHZ.00 2020-07-18T15:44:14.57 10.0 negative automatic P 59 72.8668 7.05303 0.226325
IU.YSS.BHZ.00 2020-07-18T15:44:13.60 10.0 positive automatic P 330 73.9587 -0.232622 0.225179
MY.KKM.BHZ. 2020-07-18T15:44:10.52 10.0 positive automatic P 281 73.3802 -0.0268163 0.236579
MX.SRIG.BHZ. 2020-07-18T15:44:10.08 10.0 negative automatic pP 54 72.6825 -2.6027 0
BK.CMB.BHZ.00 2020-07-18T15:44:06.67 10.0 positive automatic P 41 72.6453 0.491753 0.233657
JP.JKA.BHZ. 2020-07-18T15:44:02.50 10.0 positive automatic sP 326 69.9313 5.30781 0
GE.JAGI.BHZ. 2020-07-18T15:44:00.37 10.0 positive automatic P 266 71.4059 1.71373 0.258224
JP.JSU.BHZ. 2020-07-18T15:44:00.70 10.0 positive automatic P 311 71.761 -0.135939 0.242959
BK.SAO.BHZ.00 2020-07-18T15:43:59.27 10.0 positive automatic P 41 71.2081 1.78483 0.223982
JP.JMN.BHZ. 2020-07-18T15:43:54.35 10.0 positive automatic P 315 70.5845 0.609947 0.280557
IU.CASY.BHZ.00 2020-07-18T15:43:54.47 10.0 positive automatic P 205 70.5128 1.2599 0.134163
G.INU.BHZ.00 2020-07-18T15:43:46.31 10.0 positive automatic P 318 69.4571 -0.436176 0.251296
AT.AKUT.BHZ. 2020-07-18T15:43:46.78 10.0 positive automatic P 4 69.8185 -2.17634 0.294095
IU.MAJO.BHZ.00 2020-07-18T15:43:46.27 10.0 positive automatic P 320 69.457 -0.524271 0.287196
JP.JGF.BHZ. 2020-07-18T15:43:45.90 10.0 positive automatic P 318 69.4051 -0.601921 0.281124
AT.SMY.BHZ. 2020-07-18T15:43:41.30 10.0 positive automatic P 352 69.0672 -3.0164 0.286421
AK.ATKA.BHZ. 2020-07-18T15:43:33.35 10.0 positive automatic P 359 67.6275 -1.95469 0.318587
IU.ADK.BHZ.00 2020-07-18T15:43:31.90 10.0 positive automatic P 357 67.3793 -1.85554 0.312572
AU.MORW.BHZ. 2020-07-18T15:43:26.35 10.0 positive automatic P 245 66.2496 -0.234335 0.305032
GT.VNDA.BHZ.00 2020-07-18T15:43:10.75 10.0 positive automatic P 186 63.3776 2.91676 0.351904
IU.SBA.BHZ.00 2020-07-18T15:43:10.60 10.0 positive automatic P 185 63.2416 3.6709 0.341885
IU.MBWA.BHZ.00 2020-07-18T15:43:09.77 10.0 positive automatic P 254 63.7686 -0.658456 0.355
GE.SOEI.BHZ. 2020-07-18T15:42:55.42 10.0 positive automatic P 267 61.3848 0.752263 0.373994
AU.FITZ.BHZ. 2020-07-18T15:42:35.03 10.0 positive automatic P 258 58.6372 -0.619741 0
AU.HTT.BHZ. 2020-07-18T15:41:08.27 10.0 positive automatic P 238 46.9214 -0.897117 0.591609
AU.TOO.BHZ.00 2020-07-18T15:40:35.60 10.0 positive automatic P 231 42.8233 -0.910096 0.693839
AU.MANU.BHZ.00 2020-07-18T15:40:24.45 10.0 positive automatic P 285 41.3749 -0.16497 0
AU.QLP.BHZ. 2020-07-18T15:40:22.15 10.0 positive automatic P 247 41.3306 -2.11886 0.638271
IU.WAKE.BHZ.00 2020-07-18T15:40:13.22 10.0 positive automatic P 329 40.1093 -0.928536 0.736417
G.KIP.BHZ.00 2020-07-18T15:40:10.72 10.0 negative automatic P 22 39.6285 0.548345 0.745597
IU.PMG.BHZ.00 2020-07-18T15:40:08.47 10.0 positive automatic P 274 39.4051 0.166421 0.777317
G.CAN.BHZ.00 2020-07-18T15:40:07.20 10.0 positive automatic P 232 39.4019 -1.18224 0.75887
IU.CTAO.BHZ.00 2020-07-18T15:40:03.72 10.0 positive automatic P 257 39.0812 -1.9216 0.747321
AU.ARMA.BHZ. 2020-07-18T15:39:36.35 10.0 positive automatic P 239 35.7386 -1.10423 0.831726
AU.EIDS.BHZ. 2020-07-18T15:39:29.82 10.0 negative automatic P 248 35.0668 -1.69663 0.816297
NZ.ODZ.HHZ.10 2020-07-18T15:39:10.51 10.0 negative automatic P 202 32.7109 -0.547 0.849943
NZ.KHZ.HHZ.10 2020-07-18T15:38:41.37 10.0 positive automatic P 201 29.4001 -0.467531 0.930233
IU.HNR.BHZ.00 2020-07-18T15:38:20.50 10.0 positive automatic P 279 27.1534 -1.31523 0
NZ.URZ.HHZ.10 2020-07-18T15:37:56.78 10.0 negative automatic P 199 24.4778 -0.797706 0.934579
NZ.OUZ.HHZ.10 2020-07-18T15:37:47.45 10.0 negative automatic P 209 23.2033 1.91173 0.970874
G.PPTF.BHZ.00 2020-07-18T15:37:40.60 10.0 negative automatic P 99 22.4657 2.75156 0.769231
ND.KOUNC.BHZ.00 2020-07-18T15:37:34.75 10.0 positive automatic P 253 22.2711 -0.926582 0.930233
ND.ONTNC.BHZ.00 2020-07-18T15:37:17.89 10.0 positive automatic P 247 20.6867 -0.75965 0.97561
ND.MARNC.BHZ.00 2020-07-18T15:36:59.85 10.0 positive automatic P 249 19.0558 -1.01889 0.909091
IU.RAR.BHZ.00 2020-07-18T15:35:50.05 10.0 positive automatic P 117 13.7353 -3.43164 0.930233
II.MSVF.BHZ.00 2020-07-18T15:34:55.12 10.0 negative automatic P 254 8.9729 6.66466 0.888889
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