Earthquake with magnitude of Mwp 6.2 on date 21-05-2021 and time 22:13:20 (UTC) in region Fiji Islands region [Sea: Fiji]

A magnitude Mwp 6.2 earthquake occured in region: Fiji Islands region [Sea: Fiji], on

  • 21-05-2021 22:13:20 (UTC)
  • 22-05-2021 00:13:20 (UTC +02:00) Italian time
  • 22-05-2021 10:13:20 (UTC +12:00) local time in the region of the earthquake (Pacific/Wallis)

and geographic coordinates (lat, lon) -16.53, -177.473 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 6.2

Mwpd 6.3
2021-05-21
22:13:20
-16.5305 -177.473 10 2021-05-21
22:31:31
Sala Sismica INGV-Roma 90351051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-21 22:13:20
Latitude -16.5305
Longitude -177.4730
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 90351051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 24854
Semi-minor axis of confidence ellipse (meter) 19983
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 264
Circular confidence region, given by single value of horizontal uncertainty (meter) 20068
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62.7085
Number of associated phases, regardless of their use for origin computation 74
Number of defining phases 74
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.20074
Epicentral distance of station closest to the epicenter (degree) 4.44412
Epicentral distance of station farthest from the epicenter (degree) 93.65237
Number of stations at which the event was observed 74
Number of stations from which data was used for origin computation 74
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 6
Type of magnitude Mwpd
Reference to an origin 90351051
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-21 22:31:31

Mwp:6.2

Field Value
Value 6.2
Uncertainty 0.3
Num. used stations 9
Type of magnitude Mwp
Reference to an origin 90351051
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-21 22:31:31

mb:5.4

Field Value
Value 5.4
Uncertainty 0.1
Num. used stations 65
Type of magnitude mb
Reference to an origin 90351051
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-21 22:31:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.YAK.BHZ.00 2021-05-21T22:29:40.92 10.0 positive automatic PP 338 88.8357 -0.657639 0
IU.ULN.BHZ.00 2021-05-21T22:26:32.57 10.0 positive automatic P 319 92.8433 1.18139 0.073901
GT.PLCA.BHZ.00 2021-05-21T22:26:27.73 10.0 negative automatic P 134 91.4737 2.76625 0.0753304
C1.BO02.BHZ. 2021-05-21T22:26:25.60 10.0 positive automatic P 128 93.6524 -9.39095 0.0725043
GE.SNAA.BHZ. 2021-05-21T22:26:25.96 10.0 negative automatic P 178 91.7191 -0.0963928 0.0772017
IU.CHTO.BHZ.00 2021-05-21T22:26:17.82 10.0 negative automatic P 290 89.4422 2.43254 0.094591
IU.RSSD.BHZ.00 2021-05-21T22:26:16.95 10.0 negative automatic P 43 90.1048 -1.83005 0.0456124
US.LAO.BHZ.00 2021-05-21T22:26:16.78 10.0 negative automatic P 41 89.7467 -0.121565 0.0925488
US.EGMT.BHZ.00 2021-05-21T22:26:08.35 10.0 positive automatic P 38 88.1862 -1.23736 0.110895
US.RLMT.BHZ.00 2021-05-21T22:26:04.08 10.0 negative automatic P 41 87.1575 -0.758499 0.109363
RM.SLV.BHZ. 2021-05-21T22:26:00.02 10.0 positive automatic P 294 85.8251 1.98248 0.113995
US.BOZ.BHZ.00 2021-05-21T22:25:56.95 10.0 positive automatic P 40 85.9116 -1.6828 0.127199
AU.MAW.BHZ. 2021-05-21T22:25:56.78 10.0 positive automatic P 199 85.2732 1.5846 0.130796
IU.BILL.BHZ.00 2021-05-21T22:25:54.12 10.0 negative automatic P 354 85.3972 -1.73483 0.122418
US.MSO.BHZ.00 2021-05-21T22:25:52.90 10.0 negative automatic P 38 85.1307 -1.78773 0.128851
US.AHID.BHZ.00 2021-05-21T22:25:52.83 10.0 negative automatic P 42 84.8972 -0.810908 0.122098
US.MVCO.BHZ.00 2021-05-21T22:25:49.68 10.0 positive automatic P 48 84.1492 -0.213004 0.118637
MY.KUM.BHZ. 2021-05-21T22:25:49.87 10.0 positive automatic P 277 83.7595 2.33049 0.135224
IU.COLA.BHZ.00 2021-05-21T22:25:48.92 10.0 negative automatic P 12 84.4701 -2.25789 0.129589
US.HWUT.BHZ.00 2021-05-21T22:25:47.80 10.0 negative automatic P 43 84.0454 -1.49958 0.137635
US.HLID.BHZ.00 2021-05-21T22:25:42.10 10.0 positive automatic P 41 83.1818 -2.75561 0.128236
AK.TNA.BHZ. 2021-05-21T22:25:38.65 10.0 negative automatic P 4 82.4046 -1.88114 0.0889124
US.BMO.BHZ.00 2021-05-21T22:25:37.53 10.0 negative automatic P 38 82.0977 -1.5844 0.148871
US.HAWA.BHZ.00 2021-05-21T22:25:35.63 10.0 negative automatic P 36 81.662 -1.0503 0.152557
US.ELK.BHZ.00 2021-05-21T22:25:32.68 10.0 positive automatic P 43 81.2159 -1.95414 0.163825
CN.BBB.BHZ. 2021-05-21T22:25:31.75 10.0 positive automatic P 28 80.9026 -0.839438 0.153845
AK.GAMB.BHZ. 2021-05-21T22:25:30.07 10.0 positive automatic P 3 80.4275 0.0282614 0.157519
US.NLWA.BHZ.00 2021-05-21T22:25:28.03 10.0 negative automatic P 34 79.8781 0.8398 0.155733
IU.TUC.BHZ.00 2021-05-21T22:25:28.20 10.0 negative automatic P 52 80.2925 -1.27497 0.157289
US.WVOR.BHZ.00 2021-05-21T22:25:26.45 10.0 negative automatic P 40 79.9664 -1.33365 0.169256
NN.PRN.HHZ. 2021-05-21T22:25:25.25 10.0 negative automatic P 46 79.6437 -0.802226 0.173374
US.TPNV.BHZ.00 2021-05-21T22:25:18.65 10.0 positive automatic P 46 78.589 -1.64925 0.172019
II.KDAK.BHZ.00 2021-05-21T22:25:10.20 10.0 positive automatic P 13 77.1168 -1.66001 0.205371
BK.CMB.BHZ.00 2021-05-21T22:25:06.45 10.0 negative automatic P 43 76.4059 -1.49385 0.20766
IU.QSPA.BHZ.00 2021-05-21T22:24:49.17 10.0 positive automatic P 180 73.4104 -1.81771 0.24188
MY.SBM.BHZ. 2021-05-21T22:24:42.17 10.0 positive automatic P 278 71.9082 0.564173 0.23615
JP.JKA.BHZ. 2021-05-21T22:24:35.50 10.0 negative automatic PcP 329 68.4866 -10.3457 0
JP.JSU.BHZ. 2021-05-21T22:24:26.45 10.0 positive automatic P 314 69.286 0.812299 0.264093
MY.KKM.BHZ. 2021-05-21T22:24:26.22 10.0 positive automatic P 283 69.3231 0.277721 0.275672
IU.ADK.BHZ.00 2021-05-21T22:24:19.20 10.0 positive automatic P 1 68.4132 -0.964969 0.282967
IU.CASY.BHZ.00 2021-05-21T22:24:14.97 10.0 negative automatic P 204 67.6809 -0.567657 0.294784
IU.MAJO.BHZ.00 2021-05-21T22:24:14.92 10.0 negative automatic P 323 67.5659 0.0389725 0.303033
MY.LDM.BHZ. 2021-05-21T22:24:12.52 10.0 positive automatic P 283 66.8914 1.9585 0.311276
GE.JAGI.BHZ. 2021-05-21T22:24:09.77 10.0 positive automatic P 268 66.958 -1.21702 0.278117
AU.GIRL.BHZ.00 2021-05-21T22:23:55.33 10.0 positive automatic P 252 64.0983 2.84178 0.334896
II.KAPI.BHZ.00 2021-05-21T22:23:42.07 10.0 positive automatic P 273 62.4961 0.16812 0.351342
GT.VNDA.BHZ.00 2021-05-21T22:23:40.98 10.0 negative automatic P 185 61.8547 3.41152 0.351768
AU.MORW.BHZ. 2021-05-21T22:23:38.42 10.0 positive automatic P 245 61.7983 1.20403 0.377073
IU.SBA.BHZ.00 2021-05-21T22:23:37.05 10.0 negative automatic P 184 61.8109 -0.212781 0.376903
GE.LUWI.BHZ. 2021-05-21T22:23:31.17 10.0 positive automatic P 278 60.79 0.830357 0.381963
IU.MBWA.BHZ.00 2021-05-21T22:23:19.35 10.0 negative automatic P 255 59.2386 -0.370432 0.385619
GE.SANI.BHZ. 2021-05-21T22:23:07.22 10.0 positive automatic P 278 57.4212 0.229651 0.438657
GE.TNTI.BHZ. 2021-05-21T22:23:05.27 10.0 positive automatic P 282 57.0555 0.861934 0.415056
GE.SOEI.BHZ. 2021-05-21T22:23:05.62 10.0 positive automatic P 269 56.9561 1.74446 0.456081
AU.FITZ.BHZ. 2021-05-21T22:22:43.30 10.0 positive automatic P 259 54.1108 0.0471071 0.488325
GE.FAKI.BHZ. 2021-05-21T22:22:22.47 10.0 positive automatic P 280 51.2167 0.634572 0.450176
AU.FORT.BHZ.00 2021-05-21T22:22:21.45 10.0 positive automatic P 244 51.3695 -1.53594 0.531471
AU.WRKA.BHZ.00 2021-05-21T22:22:20.10 10.0 positive automatic P 251 51.0861 -0.838571 0.529874
AU.MTN.BHZ.00 2021-05-21T22:22:10.08 10.0 positive automatic P 267 49.7232 -0.464546 0.551843
AU.KDU.BHZ.00 2021-05-21T22:22:00.85 10.0 positive automatic P 268 48.4699 -0.0723312 0.58591
II.WRAB.BHZ.00 2021-05-21T22:21:38.22 10.0 positive automatic P 258 45.7238 -1.32773 0.618888
GE.GENI.BHZ. 2021-05-21T22:21:26.32 10.0 positive automatic P 284 43.8989 1.37485 0.658323
AU.HTT.BHZ. 2021-05-21T22:21:13.92 10.0 positive automatic P 238 42.5992 -0.63232 0.666281
AU.QLP.BHZ. 2021-05-21T22:20:26.52 10.0 positive automatic P 248 36.8486 -0.0849768 0.790476
AU.MILA.BHZ.00 2021-05-21T22:20:21.08 10.0 positive automatic P 229 35.8656 2.76943 0.829143
G.CAN.BHZ.00 2021-05-21T22:20:15.65 10.0 negative automatic P 231 35.2578 2.58619 0.785432
AU.ARMA.BHZ. 2021-05-21T22:19:40.25 10.0 negative automatic P 238 31.4101 0.657621 0.890319
AU.EIDS.BHZ. 2021-05-21T22:19:32.60 10.0 negative automatic P 248 30.5796 0.482909 0.907579
NZ.KHZ.HHZ.10 2021-05-21T22:18:56.92 10.0 negative automatic P 195 27.0024 -3.32846 0.643087
NZ.OUZ.HHZ.10 2021-05-21T22:17:55.34 10.0 positive automatic P 201 20.3195 0.972525 0.925926
ND.ONTNC.BHZ.00 2021-05-21T22:17:08.05 10.0 positive automatic P 247 16.2078 2.04945 0
G.SANVU.BHZ.00 2021-05-21T22:16:50.60 10.0 positive automatic P 272 14.7663 3.5459 0.833333
IU.AFI.BHZ.00 2021-05-21T22:14:41.02 10.0 positive automatic P 65 6.0882 -7.33635 0.610687
II.MSVF.BHZ.00 2021-05-21T22:14:24.62 10.0 positive automatic P 253 4.4441 -1.15925 0.888889
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download