Earthquake with magnitude of Mwp 6.1 on date 28-05-2020 and time 09:18:44 (Italy) in region Tonga Islands region [Sea: Tonga]

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

  • 28-05-2020 07:18:44 (UTC)
  • 28-05-2020 09:18:44 (UTC +02:00) Italian time
  • 28-05-2020 20:18:44 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -22.25, -174.14 at 10 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 6.2
2020-05-28
07:18:44
-22.25 -174.14 10 2020-05-28
07:34:47
Sala Sismica INGV-Roma 79645701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-28 07:18:44
Latitude -22.25
Longitude -174.14
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 79645701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 8532
Semi-minor axis of confidence ellipse (meter) 6200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 6888.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 33.6716
Number of associated phases, regardless of their use for origin computation 127
Number of defining phases 127
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.70525
Epicentral distance of station closest to the epicenter (degree) 5.0614
Epicentral distance of station farthest from the epicenter (degree) 91.51747
Number of stations at which the event was observed 102
Number of stations from which data was used for origin computation 102
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 17
Type of magnitude Mwpd
Reference to an origin 79645701
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-28 07:34:47

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 20
Type of magnitude Mwp
Reference to an origin 79645701
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-28 07:34:47

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 43
Type of magnitude mb
Reference to an origin 79645701
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-28 07:34:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.HKT.BHZ.00 2020-05-28T07:31:52.10 10.0 negative automatic PcP 58 91.5175 1.28966 0
IU.BILL.BHZ.00 2020-05-28T07:31:49.32 10.0 negative automatic P 353 91.4371 -0.330891 0
IU.LCO.BHZ.00 2020-05-28T07:31:48.32 10.0 negative automatic P 122 90.2543 3.82764 0.0861904
US.EGMT.BHZ.00 2020-05-28T07:31:47.73 10.0 negative automatic PcP 37 90.7929 -0.124329 0
US.RLMT.BHZ.00 2020-05-28T07:31:41.95 10.0 negative automatic P 40 89.4822 1.10239 0.0942882
US.AMTX.BHZ.00 2020-05-28T07:31:41.18 10.0 negative automatic PcP 51 89.2948 -0.0254467 0
US.KVTX.BHZ.00 2020-05-28T07:31:41.10 10.0 negative automatic PcP 59 88.8529 2.02578 0
IU.COLA.BHZ.00 2020-05-28T07:31:39.95 10.0 negative automatic P 11 89.4487 -0.423707 0.0990686
GE.GSI.BHZ. 2020-05-28T07:31:40.27 10.0 negative automatic P 272 88.9009 2.48698 0.10175
US.ISCO.BHZ.00 2020-05-28T07:31:39.68 10.0 negative automatic P 46 88.9703 1.11162 0.0977649
G.PEL.BHZ.00 2020-05-28T07:31:39.50 10.0 negative automatic PcP 125 88.4747 1.97408 0
G.PAF.BHZ.00 2020-05-28T07:31:39.30 10.0 positive automatic P 216 88.4874 3.48637 0.102278
US.JCT.BHZ.00 2020-05-28T07:31:37.93 10.0 negative automatic P 56 88.6641 1.17152 0.0523437
US.BOZ.BHZ.00 2020-05-28T07:31:36.65 10.0 negative automatic PcP 38 88.3698 -0.559851 0
US.SDCO.BHZ.00 2020-05-28T07:31:35.18 10.0 negative automatic P 47 88.0043 1.20198 0.105713
US.BW06.BHZ.00 2020-05-28T07:31:34.40 10.0 positive automatic P 42 88.0186 0.419213 0.108125
US.MSO.BHZ.00 2020-05-28T07:31:32.88 10.0 negative automatic P 36 87.7881 0.153449 0
US.AHID.BHZ.00 2020-05-28T07:31:30.38 10.0 negative automatic P 41 87.0768 0.968143 0.112465
IU.CTAO.BHZ.00 2020-05-28T07:31:30.00 10.0 positive automatic S 266 36.8897 -5.09832 0
US.NEW.BHZ.00 2020-05-28T07:31:28.98 10.0 negative automatic P 34 86.9677 0.302114 0.115971
IU.MA2.BHZ.00 2020-05-28T07:31:26.52 10.0 negative automatic P 343 86.7283 -0.908464 0.117796
GE.SNAA.BHZ. 2020-05-28T07:31:25.31 10.0 negative automatic P 177 85.8829 1.95962 0.116067
US.HWUT.BHZ.00 2020-05-28T07:31:25.50 10.0 negative automatic P 42 86.1376 0.719713 0.125346
IU.ANMO.BHZ.00 2020-05-28T07:31:25.70 10.0 negative automatic P 49 85.915 2.01652 0.121219
GT.PLCA.BHZ.00 2020-05-28T07:31:24.13 10.0 negative automatic PcP 132 85.2767 0.648208 0
US.MVCO.BHZ.00 2020-05-28T07:31:24.13 10.0 negative automatic P 47 85.6927 1.48654 0.125858
II.COCO.BHZ.00 2020-05-28T07:31:23.65 10.0 negative automatic PcP 259 84.5232 3.66445 0
US.HLID.BHZ.00 2020-05-28T07:31:22.33 10.0 positive automatic P 39 85.5722 0.357437 0.0320854
US.MNTX.BHZ.00 2020-05-28T07:31:20.98 10.0 negative automatic P 53 85.0444 1.88261 0.127994
US.BMO.BHZ.00 2020-05-28T07:31:18.40 10.0 negative automatic P 37 84.7249 0.782816 0.135244
C1.LL01.BHZ. 2020-05-28T07:31:18.00 10.0 positive automatic PcP 133 83.3215 3.29685 0
US.DUG.BHZ.00 2020-05-28T07:31:18.00 10.0 negative automatic P 42 84.5556 1.18087 0.13343
US.HAWA.BHZ.00 2020-05-28T07:31:17.68 10.0 negative automatic P 34 84.5146 1.25655 0.133762
C1.LL02.BHZ. 2020-05-28T07:31:14.38 10.0 negative automatic P 134 83.3647 3.82375 0.146702
US.ELK.BHZ.00 2020-05-28T07:31:12.13 10.0 negative automatic P 41 83.3915 1.1171 0.132143
MY.KOM.BHZ. 2020-05-28T07:31:11.82 10.0 negative automatic P 275 83.2933 1.6945 0
US.NLWA.BHZ.00 2020-05-28T07:31:10.23 10.0 negative automatic P 32 83.0018 1.50392 0.148054
US.WUAZ.BHZ.00 2020-05-28T07:31:10.20 10.0 negative automatic P 47 82.8302 2.20699 0.142733
G.COYC.BHZ.00 2020-05-28T07:31:08.90 10.0 negative automatic P 136 82.2353 4.24143 0.144393
II.KDAK.BHZ.00 2020-05-28T07:31:03.40 10.0 positive automatic P 11 82.0319 -0.182213 0.149383
IU.TUC.BHZ.00 2020-05-28T07:31:02.97 10.0 positive automatic P 50 81.463 2.25799 0.161557
IU.COR.BHZ.00 2020-05-28T07:31:01.67 10.0 negative automatic P 34 81.3418 1.74329 0.158863
US.TPNV.BHZ.00 2020-05-28T07:30:57.23 10.0 negative automatic P 43 80.4685 1.70545 0.0833151
C.GO10.BHZ. 2020-05-28T07:30:56.53 10.0 positive automatic P 144 79.7838 4.86028 0.176964
BK.CMB.BHZ.00 2020-05-28T07:30:46.25 10.0 positive automatic P 40 78.594 1.08609 0.195279
IU.PET.BHZ.00 2020-05-28T07:30:45.62 10.0 positive automatic P 344 78.8917 -1.07575 0.185434
JP.JTU.BHZ. 2020-05-28T07:30:42.80 10.0 positive automatic P 315 78.07 0.644647 0
IU.SLBS.BHZ.00 2020-05-28T07:30:41.27 10.0 negative automatic P 58 77.475 2.29658 0.178092
JP.JKA.BHZ. 2020-05-28T07:30:38.35 10.0 positive automatic PcP 328 75.0026 -0.194792 0
BK.SAO.BHZ.00 2020-05-28T07:30:38.72 10.0 negative automatic P 41 77.1269 1.79305 0.200389
JP.YOJ.BHZ. 2020-05-28T07:30:35.10 10.0 positive automatic P 304 76.8391 -0.159918 0.191964
AT.AKUT.BHZ. 2020-05-28T07:30:33.30 10.0 positive automatic P 5 76.7224 -1.30011 0.21505
JP.JNU.BHZ. 2020-05-28T07:30:31.60 10.0 negative automatic P 315 76.2355 -0.327295 0.202199
JP.JTM.BHZ. 2020-05-28T07:30:28.35 10.0 positive automatic P 327 75.5244 0.547518 0.200131
JP.JMN.BHZ. 2020-05-28T07:30:23.15 10.0 positive automatic P 317 74.7002 0.0322046 0.212691
AK.ATKA.BHZ. 2020-05-28T07:30:20.75 10.0 positive automatic P 360 74.4487 -0.825106 0.22626
JP.JOW.BHZ. 2020-05-28T07:30:20.50 10.0 positive automatic P 308 74.2281 0.178089 0.232939
IU.ADK.BHZ.00 2020-05-28T07:30:18.72 10.0 negative automatic P 358 74.1629 -1.2056 0.223021
JP.JGF.BHZ. 2020-05-28T07:30:17.65 10.0 negative automatic P 321 73.8469 -0.503301 0.231547
MY.KKM.BHZ. 2020-05-28T07:30:17.67 10.0 positive automatic P 284 73.7188 0.224383 0.232909
JP.JMZ.BHZ. 2020-05-28T07:30:05.80 10.0 negative automatic P 309 71.4975 1.71456 0.257142
GE.JAGI.BHZ. 2020-05-28T07:29:54.12 10.0 positive automatic P 269 69.9295 -0.441068 0.281517
II.KAPI.BHZ.00 2020-05-28T07:29:32.22 10.0 positive automatic P 275 66.0094 2.29664 0
IU.CASY.BHZ.00 2020-05-28T07:29:17.77 10.0 negative automatic P 206 63.8293 2.09331 0.358348
GE.SANI.BHZ. 2020-05-28T07:28:58.12 10.0 positive automatic P 280 61.4534 -1.70966 0.364725
GE.TNTI.BHZ. 2020-05-28T07:28:58.52 10.0 positive automatic P 284 61.4055 -0.98602 0.391445
IU.NWAO.BHZ.00 2020-05-28T07:28:56.10 10.0 positive automatic P 244 60.7195 1.18597 0.410861
IU.MBWA.BHZ.00 2020-05-28T07:28:55.82 10.0 negative automatic P 257 60.9191 -0.413767 0.407977
GE.SOEI.BHZ. 2020-05-28T07:28:51.52 10.0 positive automatic P 271 60.121 0.59327 0.39096
GT.VNDA.BHZ.00 2020-05-28T07:28:28.38 10.0 negative automatic P 186 56.4621 3.18283 0.458025
IU.SBA.BHZ.00 2020-05-28T07:28:27.55 10.0 positive automatic P 185 56.3378 3.25287 0.482603
GE.FAKI.BHZ. 2020-05-28T07:28:15.72 10.0 positive automatic P 282 55.4087 -1.92675 0.437908
IU.GUMO.BHZ.00 2020-05-28T07:28:04.60 10.0 positive automatic P 308 53.8339 -1.62242 0.432215
NZ.KHZ.HHZ.10 2020-05-28T07:23:42.82 10.0 positive automatic P 204 22.6352 -1.41792 0.970874
G.KIP.BHZ.00 2020-05-28T07:27:08.87 10.0 positive automatic P 21 46.4151 -1.05729 0.651898
IU.POHA.BHZ.00 2020-05-28T07:27:05.20 10.0 negative automatic P 25 45.7702 0.0188991 0.640075
IU.WAKE.BHZ.00 2020-05-28T07:27:01.77 10.0 negative automatic P 334 45.5758 -1.52061 0.643549
AU.HTT.BHZ. 2020-05-28T07:26:38.62 10.0 negative automatic P 244 42.6045 -0.957097 0.681589
AU.MANU.BHZ.00 2020-05-28T07:26:37.30 10.0 positive automatic P 293 42.4831 -1.19362 0.13215
AU.COEN.BHZ. 2020-05-28T07:26:27.30 10.0 positive automatic P 274 41.2674 -1.28112 0.682342
IU.PMG.BHZ.00 2020-05-28T07:26:09.97 10.0 positive automatic P 283 39.2386 -1.75685 0.76195
II.TAU.BHZ.00 2020-05-28T07:26:02.72 10.0 positive automatic P 228 37.9948 1.43396 0.750617
AU.TOO.BHZ.00 2020-05-28T07:25:59.98 10.0 positive automatic P 237 37.8314 -0.0131823 0.780306
AU.QLP.BHZ. 2020-05-28T07:25:59.82 10.0 positive automatic P 255 37.9831 -1.38112 0.805778
IU.CTAO.BHZ.00 2020-05-28T07:25:50.37 10.0 positive automatic P 266 36.8897 -1.59025 0.780499
AU.MILA.BHZ.00 2020-05-28T07:25:35.20 10.0 negative automatic P 237 34.8772 0.418039 0.869955
G.CAN.BHZ.00 2020-05-28T07:25:32.25 10.0 positive automatic P 240 34.5994 -0.111574 0.835078
AU.ARMA.BHZ. 2020-05-28T07:25:06.02 10.0 negative automatic P 248 31.6107 -0.320591 0.940102
AU.EIDS.BHZ. 2020-05-28T07:25:06.00 10.0 positive automatic P 257 31.8798 -1.54972 0.870523
NZ.ODZ.HHZ.10 2020-05-28T07:24:15.00 10.0 positive automatic P 205 25.9735 0.0203437 0.917431
AU.LHI.BHZ.00 2020-05-28T07:24:14.35 10.0 negative automatic P 243 25.5484 2.26486 0.91954
G.PPTF.BHZ.00 2020-05-28T07:23:55.95 10.0 negative automatic P 83 23.5414 2.07612 0.909091
IU.SNZO.BHZ.00 2020-05-28T07:23:28.30 10.0 positive automatic P 204 21.2417 -1.04279 0.97561
ND.KOUNC.BHZ.00 2020-05-28T07:23:17.00 10.0 positive automatic P 271 20.1385 -0.386381 0.909091
ND.ONTNC.BHZ.00 2020-05-28T07:22:53.19 10.0 positive automatic P 266 17.9424 0.454503 0.888889
AU.NFK.BHZ.00 2020-05-28T07:22:48.08 10.0 positive automatic P 243 17.4969 0.834393 0.862069
NZ.URZ.HHZ.10 2020-05-28T07:22:47.58 10.0 positive automatic P 203 17.6811 -1.93336 0.980392
ND.MARNC.BHZ.00 2020-05-28T07:22:34.95 10.0 positive automatic P 269 16.5528 -0.415632 0.769231
IU.FUNA.BHZ.00 2020-05-28T07:22:17.87 10.0 positive automatic P 334 15.1442 0.755679 0.824742
IU.RAO.BHZ.00 2020-05-28T07:22:00.27 10.0 positive automatic S 205 7.7801 -3.7174 0
IU.RAR.BHZ.00 2020-05-28T07:21:50.50 10.0 positive automatic P 88 13.382 -2.63177 0.963855
II.MSVF.BHZ.00 2020-05-28T07:20:50.97 10.0 positive automatic P 300 8.6048 3.0926 0.952381
IU.RAO.BHZ.00 2020-05-28T07:20:35.42 10.0 positive automatic P 205 7.7801 -1.01807 0.963855
AU.NIUE.BHZ. 2020-05-28T07:19:56.40 10.0 positive automatic P 52 5.0614 -2.71217 0.987654
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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