Earthquake with magnitude of mb 5.7 on date 30-05-2015 and time 19:18:37 (Italy) in region Tonga Islands [Sea: Tonga]

A magnitude mb 5.7 earthquake occured in region: Tonga Islands [Sea: Tonga], on

  • 30-05-2015 17:18:37 (UTC)
  • 30-05-2015 19:18:37 (UTC +02:00) Italian time
  • 31-05-2015 06:18:37 (UTC +13:00) local time in the region of the earthquake (Pacific/Apia)

and geographic coordinates (lat, lon) -15.73, -173.46 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 mb 5.7 2015-05-30
17:18:37
-15.73 -173.46 20 2015-05-30
17:36:22
Sala Sismica INGV-Roma 19435771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-05-30 17:18:37
Latitude -15.73
Longitude -173.46
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 19435771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13877
Semi-minor axis of confidence ellipse (meter) 5421
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 324
Circular confidence region, given by single value of horizontal uncertainty (meter) 12009.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56.2252
Number of associated phases, regardless of their use for origin computation 98
Number of defining phases 98
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.20857
Epicentral distance of station closest to the epicenter (degree) 2.44023
Epicentral distance of station farthest from the epicenter (degree) 92.81661
Number of stations at which the event was observed 87
Number of stations from which data was used for origin computation 87
Magnitude information

mb:5.7

Field Value
Value 5.7
Uncertainty 0.3
Num. used stations 62
Type of magnitude mb
Reference to an origin 19435771
Agency INGV
Autore Auto added
Time of creation (UTC) 2015-05-30 17:36:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.CHTO.BHZ.00 2015-05-30T17:31:48.37 10.0 positive automatic P 289 92.8166 0.937021 0.0758246
US.MIAR.BHZ.00 2015-05-30T17:31:37.90 10.0 positive automatic P 54 90.8241 -0.277017 0.0826538
CU.TGUH.BHZ.00 2015-05-30T17:31:36.90 10.0 positive automatic PcP 75 90.2104 0.236243 0
US.KSU1.BHZ.00 2015-05-30T17:31:34.08 10.0 positive automatic P 49 90.0552 -0.540104 0.0884693
IU.YAK.BHZ.00 2015-05-30T17:31:30.12 10.0 negative automatic P 337 89.5739 -2.20744 0.0886124
IU.RSSD.BHZ.00 2015-05-30T17:31:18.52 10.0 positive automatic P 42 86.8934 -1.40978 0.116574
TM.UBPT.BHZ. 2015-05-30T17:31:15.27 10.0 positive automatic P 287 85.8277 0.922638 0.127255
C.GO10.BHZ. 2015-05-30T17:31:13.28 10.0 positive automatic P 144 84.666 4.64183 0.131035
IU.BILL.BHZ.00 2015-05-30T17:31:08.77 10.0 negative automatic P 353 85.0497 -1.73484 0.114659
US.JCT.BHZ.00 2015-05-30T17:31:07.23 10.0 positive automatic P 56 84.4923 -0.518896 0.127962
ND.KOUNC.BHZ.00 2015-05-30T17:23:26.29 10.0 negative automatic ScP 254 21.6693 0.728845 0.930233
IW.SMCO.BHZ.00 2015-05-30T17:30:59.18 10.0 positive automatic P 46 82.7318 -0.0189798 0.154094
IM.PD31.BHZ. 2015-05-30T17:30:57.90 10.0 positive automatic P 42 82.7125 -0.989261 0.14882
IU.COLA.BHZ.00 2015-05-30T17:30:57.62 10.0 positive automatic P 11 82.9214 -2.00835 0.130189
IU.ANMO.BHZ.00 2015-05-30T17:30:51.12 10.0 positive automatic P 50 81.1968 0.261331 0.149737
IU.MA2.BHZ.00 2015-05-30T17:30:46.47 10.0 negative automatic P 343 80.6889 -1.42225 0.153955
AK.GAMB.BHZ. 2015-05-30T17:30:43.01 10.0 negative automatic P 1 79.5138 1.51821 0.18128
UW.BRAN.BHZ. 2015-05-30T17:30:42.20 10.0 positive automatic P 36 79.8061 -1.07095 0
AT.TTA.BHZ. 2015-05-30T17:30:42.36 10.0 positive automatic P 8 79.8309 -1.0199 0.178267
G.DZM.BHZ.00 2015-05-30T17:23:08.70 10.0 positive automatic S 248 20.0201 0.828464 0.952381
AT.CRAG.BHZ. 2015-05-30T17:30:37.88 10.0 negative automatic P 22 78.893 -0.223752 0
US.HAWA.BHZ.00 2015-05-30T17:30:37.00 10.0 positive automatic P 35 78.7739 -0.501428 0.186615
CN.BBB.BHZ. 2015-05-30T17:30:34.70 10.0 positive automatic P 26 78.4232 -0.81211 0.185591
US.WUAZ.BHZ.00 2015-05-30T17:30:33.45 10.0 positive automatic P 47 77.9155 0.478673 0.186117
GE.CISI.BHZ. 2015-05-30T17:30:28.47 10.0 positive automatic P 266 77.1581 -0.0912845 0.202512
US.WVOR.BHZ.00 2015-05-30T17:30:27.03 10.0 positive automatic P 38 76.9134 -0.294008 0.204975
IU.TUC.BHZ.00 2015-05-30T17:30:27.12 10.0 positive automatic P 50 76.7851 0.595354 0.206272
NN.PRN.HHZ. 2015-05-30T17:30:24.58 10.0 positive automatic P 44 76.3536 0.400199 0.205768
IU.COR.BHZ.00 2015-05-30T17:30:19.77 10.0 positive automatic P 34 75.5821 0.230483 0.218642
II.KDAK.BHZ.00 2015-05-30T17:30:17.77 10.0 positive automatic P 11 75.5114 -1.37378 0.214278
BK.HUMO.BHZ.00 2015-05-30T17:30:13.72 10.0 positive automatic P 36 74.5056 0.309331 0.238532
IU.YSS.BHZ.00 2015-05-30T17:30:09.70 10.0 positive automatic P 331 73.9629 -0.479548 0.235856
IU.SLBS.BHZ.00 2015-05-30T17:30:08.17 10.0 positive automatic P 59 73.4857 0.679394 0.235449
BK.WDC.BHZ.00 2015-05-30T17:30:07.30 10.0 positive automatic P 38 73.4656 0.0188734 0.244182
II.PFO.BHZ.00 2015-05-30T17:30:06.37 10.0 positive automatic P 47 73.3486 -0.389831 0.248475
BK.CMB.BHZ.00 2015-05-30T17:30:05.80 10.0 positive automatic P 41 73.2306 -0.168584 0.243856
JP.JNU.BHZ. 2015-05-30T17:29:58.40 10.0 negative automatic P 313 72.1453 -1.08773 0.255958
BK.SAO.BHZ.00 2015-05-30T17:29:57.60 10.0 positive automatic P 42 71.7952 0.246114 0.245322
BK.MCCM.BHZ.00 2015-05-30T17:29:57.12 10.0 positive automatic P 40 71.7405 0.15515 0.248704
CI.PHL.BHZ. 2015-05-30T17:29:56.45 10.0 positive automatic P 43 71.5745 0.413572 0.239619
JP.JEW.BHZ. 2015-05-30T17:29:56.50 10.0 positive automatic P 327 71.7026 -0.270464 0.238284
JP.JHS.BHZ. 2015-05-30T17:29:56.40 10.0 positive automatic P 316 71.6778 -0.270394 0.261261
GE.JAGI.BHZ. 2015-05-30T17:29:50.92 10.0 positive automatic P 266 70.8503 -0.693776 0.264485
JP.JMN.BHZ. 2015-05-30T17:29:48.95 10.0 negative automatic P 315 70.4267 -0.149549 0.26931
JP.JWT.BHZ. 2015-05-30T17:29:47.90 10.0 positive automatic P 318 70.3416 -0.615494 0.283468
JP.JSD.BHZ. 2015-05-30T17:29:47.85 10.0 positive automatic P 321 70.277 -0.265102 0.271025
IU.CASY.BHZ.00 2015-05-30T17:29:46.22 10.0 positive automatic P 205 70.0087 -0.227255 0.280639
AT.AKUT.BHZ. 2015-05-30T17:29:46.02 10.0 negative automatic P 5 70.17 -1.41293 0.276107
G.INU.BHZ.00 2015-05-30T17:29:41.61 10.0 positive automatic P 318 69.3312 -0.677805 0.281988
AU.GIRL.BHZ. 2015-05-30T17:29:35.77 10.0 negative automatic P 251 68.0122 1.71084 0.3084
AK.ATKA.BHZ. 2015-05-30T17:29:32.23 10.0 positive automatic P 360 67.9316 -1.3128 0.311658
AU.MORW.BHZ. 2015-05-30T17:29:18.57 10.0 negative automatic P 245 65.6326 -0.362243 0.334736
GE.LUWI.BHZ. 2015-05-30T17:29:12.32 10.0 negative automatic P 277 64.5105 0.728772 0.326084
IU.SBA.BHZ.00 2015-05-30T17:29:03.07 10.0 positive automatic P 185 62.8899 2.15705 0.366704
GT.VNDA.BHZ.00 2015-05-30T17:29:03.05 10.0 positive automatic P 186 63.015 1.291 0.369371
GE.MMRI.BHZ. 2015-05-30T17:29:01.82 10.0 negative automatic P 268 63.0385 -0.0941369 0.36047
GE.SOEI.BHZ. 2015-05-30T17:28:48.57 10.0 negative automatic P 267 60.8347 1.31137 0.381362
GE.SANI.BHZ. 2015-05-30T17:28:48.52 10.0 negative automatic P 276 61.1413 -0.643799 0.377247
GE.TNTI.BHZ. 2015-05-30T17:28:46.32 10.0 negative automatic P 280 60.6862 0.244633 0.383362
AU.FITZ.BHZ. 2015-05-30T17:28:27.94 10.0 positive automatic P 258 58.0485 0.0776484 0.415066
GE.BNDI.BHZ. 2015-05-30T17:28:18.57 10.0 positive automatic P 275 56.6929 0.295523 0.460055
AU.FORT.BHZ. 2015-05-30T17:28:06.27 10.0 negative automatic P 243 55.1746 -1.15696 0.495104
AU.WRKA.BHZ. 2015-05-30T17:28:05.47 10.0 positive automatic P 250 54.9881 -0.691576 0.49207
GE.FAKI.BHZ. 2015-05-30T17:28:05.62 10.0 negative automatic P 278 54.9063 0.138698 0.454986
AU.MTN.BHZ. 2015-05-30T17:27:55.52 10.0 negative automatic P 265 53.6231 -0.617478 0.507674
AU.KDU.BHZ. 2015-05-30T17:27:46.62 10.0 negative automatic P 266 52.3649 -0.219202 0.521661
II.WRAB.BHZ.00 2015-05-30T17:27:25.67 10.0 positive automatic P 257 49.6613 -0.899426 0.586564
GE.GENI.BHZ. 2015-05-30T17:27:10.67 10.0 negative automatic P 281 47.4885 0.871579 0.512284
AU.HTT.BHZ. 2015-05-30T17:26:59.62 10.0 positive automatic P 238 46.3027 -1.01412 0.595262
AU.TOO.BHZ. 2015-05-30T17:26:27.22 10.0 positive automatic P 231 42.2123 -0.645009 0.696941
AU.MANU.BHZ. 2015-05-30T17:26:18.60 10.0 positive automatic P 286 40.9387 1.24415 0.237446
AU.QLP.BHZ. 2015-05-30T17:26:14.45 10.0 negative automatic P 247 40.7144 -1.068 0.742416
IU.WAKE.BHZ.00 2015-05-30T17:26:10.35 10.0 negative automatic P 330 40.1055 -0.0936818 0.745258
GE.PMG.BHZ.00 2015-05-30T17:26:01.57 10.0 negative automatic P 275 38.8976 1.18996 0.717454
AU.ARMA.BHZ. 2015-05-30T17:25:27.82 10.0 negative automatic P 239 35.1197 -0.628219 0.844365
AU.EIDS.BHZ. 2015-05-30T17:25:21.17 10.0 negative automatic P 248 34.4534 -1.36916 0.858078
NZ.ODZ.HHZ.10 2015-05-30T17:25:02.77 10.0 positive automatic P 201 32.2279 -0.377396 0.931289
NZ.KHZ.HHZ.10 2015-05-30T17:24:32.12 10.0 negative automatic P 200 28.9235 -1.81383 0.97561
IU.XMAS.BHZ.00 2015-05-30T17:23:48.55 10.0 positive automatic P 43 23.8015 0.833787 0.898876
NZ.URZ.HHZ.10 2015-05-30T17:23:46.96 10.0 negative automatic P 198 24.0121 -2.69095 0.961538
NZ.OUZ.HHZ.10 2015-05-30T17:23:36.86 10.0 negative automatic P 208 22.6747 0.58261 0.970874
IU.TARA.BHZ.00 2015-05-30T17:23:27.17 10.0 positive automatic ScP 321 21.7466 0.78512 0.740741
G.SANVU.BHZ.00 2015-05-30T17:22:55.45 10.0 negative automatic P 268 18.6209 3.03051 0.833333
ND.MARNC.BHZ.00 2015-05-30T17:22:52.39 10.0 positive automatic P 249 18.444 1.92295 0.97561
IU.RAR.BHZ.00 2015-05-30T17:21:54.72 10.0 positive automatic P 115 14.0823 0.184243 0.930233
AU.NIUE.BHZ. 2015-05-30T17:19:47.67 10.0 negative automatic P 135 4.7497 0.992726 0.97561
IU.AFI.BHZ.00 2015-05-30T17:19:14.97 10.0 positive automatic P 42 2.4402 -0.0595163 0.97561
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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