Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.4 on date 19-03-2022 and time 22:24:19 (Italy) in region Tonga [Sea]

A magnitude Mwp 6.4 earthquake occured in region: Tonga [Sea], on

  • 19-03-2022 21:24:19 (UTC)
  • 19-03-2022 22:24:19 (UTC +01:00) Italian time
  • 20-03-2022 10:24:19 (UTC +13:00) local time in the region of the earthquake (Pacific/Tongatapu)

and geographic coordinates (lat, lon) -25.3970, -176.0050 at 3 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.

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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
Reviewed
Rev100 		mb 5.5
Mwp 6.4
Mwpd 6.4 		2022-03-19
21:24:19		 -25.3969 -176.005 3 2022-03-19
21:49:48		 Sala Sismica INGV-Roma 102165131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-03-19 21:24:19
Latitude -25.3969
Longitude -176.0050
Depth (km) 3 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 102165131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 20743
Semi-minor axis of confidence ellipse (meter) 14278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 16819.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58.9003
Number of associated phases, regardless of their use for origin computation 73
Number of defining phases 73
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 2.61803
Epicentral distance of station closest to the epicenter (degree) 9.43468
Epicentral distance of station farthest from the epicenter (degree) 84.78866
Number of stations at which the event was observed 59
Number of stations from which data was used for origin computation 59
Magnitudes information

Mwpd:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 20
Type of magnitude Mwpd
Reference to an origin 102165131
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2022-03-19 21:49:48

Mwp:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 20
Type of magnitude Mwp
Reference to an origin 102165131
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2022-03-19 21:49:48

mb:5.5

Field Value
Value 5.5
Uncertainty 0.2
Num. used stations 34
Type of magnitude mb
Reference to an origin 102165131
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2022-03-19 21:49:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IU.TUC.BHZ.00 2022-03-19T21:36:56.45 10.0 negative automatic P 50 9411.5457 3.01158 0.130304
US.TPNV.BHZ.00 2022-03-19T21:36:51.88 10.0 positive automatic P 44 9315.2532 2.72564 0.13572
GE.BKNI.BHZ. 2022-03-19T21:36:47.57 10.0 positive automatic P 273 9299.1693 -0.573859 0
G.COYC.BHZ.00 2022-03-19T21:36:39.55 10.0 negative automatic P 137 9005.4744 5.19112 0.15054
GE.SNAA.BHZ. 2022-03-19T21:36:46.66 10.0 positive automatic P 178 9192.1653 3.35538 0.146507
IU.INCN.BHZ.00 2022-03-19T21:36:43.47 10.0 positive automatic P 318 9188.7132 0.461534 0.140246
IU.YSS.BHZ.00 2022-03-19T21:36:35.80 10.0 negative automatic P 333 9030.6492 0.252851 0
IU.PET.BHZ.00 2022-03-19T21:36:35.52 10.0 positive automatic P 345 9042.0933 -0.568904 0
GE.MNAI.BHZ. 2022-03-19T21:36:28.92 10.0 positive automatic P 270 8884.4067 0.428023 0
IU.TATO.BHZ.00 2022-03-19T21:36:19.37 10.0 positive automatic P 305 8727.9855 -1.43236 0.0964455
AT.SMY.BHZ. 2022-03-19T21:36:17.30 10.0 positive automatic P 354 8724.5889 -3.31424 0.146685
AK.ATKA.BHZ. 2022-03-19T21:36:14.89 10.0 positive automatic P 1 8614.8432 -0.237381 0.192786
JP.JTM.BHZ. 2022-03-19T21:36:13.40 10.0 positive automatic P 328 8575.0719 0.268091 0.206793
IU.ADK.BHZ.00 2022-03-19T21:36:12.80 10.0 positive automatic P 360 8577.8691 -0.480226 0.199246
JP.JSU.BHZ. 2022-03-19T21:36:08.50 10.0 positive automatic P 315 8490.7563 -0.398031 0.135404
JP.JMN.BHZ. 2022-03-19T21:36:05.15 10.0 positive automatic P 319 8424.9111 -0.400459 0.170898
AU.XMI.BHZ. 2022-03-19T21:36:04.25 10.0 positive automatic P 265 8331.0717 3.59668 0.204981
IU.MAJO.BHZ.00 2022-03-19T21:36:02.52 10.0 positive automatic P 323 8378.3022 -0.603595 0.220028
JP.JOW.BHZ. 2022-03-19T21:35:59.85 10.0 negative automatic P 310 8314.4661 0.0749801 0.220829
G.INU.BHZ.00 2022-03-19T21:36:01.16 10.0 positive automatic P 322 8351.862 -0.544374 0.179734
JP.JGF.BHZ. 2022-03-19T21:36:01.55 10.0 positive automatic P 322 8352.4836 -0.265355 0.222468
GE.JAGI.BHZ. 2022-03-19T21:35:18.12 10.0 positive automatic P 271 7571.9094 -1.31752 0.139666
II.KAPI.BHZ.00 2022-03-19T21:34:55.27 10.0 positive automatic P 277 7173.0864 -1.17993 0.276017
GE.LUWI.BHZ. 2022-03-19T21:34:49.77 10.0 positive automatic P 282 7073.7303 -0.751185 0
AU.GIRL.BHZ.00 2022-03-19T21:34:47.38 10.0 positive automatic P 256 6995.9526 1.4744 0.170599
IU.CASY.BHZ.00 2022-03-19T21:34:29.52 10.0 positive automatic P 206 6688.2273 2.33782 0.408186
GE.TNTI.BHZ. 2022-03-19T21:34:27.82 10.0 positive automatic P 287 6724.9683 -1.62956 0.3941
GE.SANI.BHZ. 2022-03-19T21:34:26.57 10.0 positive automatic P 283 6706.2537 -1.72298 0.405875
AU.MORW.BHZ. 2022-03-19T21:34:23.67 10.0 negative automatic P 250 6624.9129 0.362918 0.426512
GE.SOEI.BHZ. 2022-03-19T21:34:15.17 10.0 positive automatic P 274 6500.8371 -0.520692 0.378527
IU.MBWA.BHZ.00 2022-03-19T21:34:15.32 10.0 positive automatic P 260 6507.153 -0.619884 0.199278
GE.BNDI.BHZ. 2022-03-19T21:33:53.62 10.0 positive automatic P 283 6194.2218 -2.35286 0.306329
AU.FITZ.BHZ. 2022-03-19T21:33:47.35 10.0 positive automatic P 265 6025.4796 2.35007 0.49186
GE.FAKI.BHZ. 2022-03-19T21:33:44.17 10.0 positive automatic P 286 6051.3759 -2.53043 0.423473
GT.VNDA.BHZ.00 2022-03-19T21:33:41.50 10.0 positive automatic P 186 5900.3271 4.76046 0.470782
AU.MTN.BHZ.00 2022-03-19T21:33:20.48 10.0 positive automatic P 274 5679.0708 -1.4363 0.568339
AU.WRKA.BHZ.00 2022-03-19T21:33:11.60 10.0 negative automatic P 258 5550.0555 -1.61822 0.567405
AU.KDU.BHZ.00 2022-03-19T21:33:11.45 10.0 positive automatic P 275 5551.7427 -1.78442 0.400341
AU.FORT.BHZ.00 2022-03-19T21:33:06.05 10.0 positive automatic P 250 5454.4845 -0.520887 0.596158
GE.GENI.BHZ. 2022-03-19T21:32:55.52 10.0 positive automatic P 291 5316.5115 -1.45304 0.550848
II.WRAB.BHZ.00 2022-03-19T21:32:39.55 10.0 negative automatic P 266 5091.8475 -1.65307 0.654471
AU.HTT.BHZ. 2022-03-19T21:31:51.80 10.0 positive automatic P 247 4413.5487 0.113819 0.770843
AU.QLP.BHZ. 2022-03-19T21:31:15.97 10.0 positive automatic P 259 3953.043 -0.522456 0.687574
IU.CTAO.BHZ.00 2022-03-19T21:31:11.57 10.0 positive automatic P 271 3895.1898 -0.4645 0.542198
II.TAU.BHZ.00 2022-03-19T21:31:11.27 10.0 positive automatic P 230 3845.6505 3.12639 0.854749
AU.TOO.BHZ.00 2022-03-19T21:31:09.88 10.0 positive automatic P 240 3855.1188 0.913666 0.796126
AU.MILA.BHZ.00 2022-03-19T21:30:44.28 10.0 positive automatic P 240 3526.6032 1.10684 0.561056
G.CAN.BHZ.00 2022-03-19T21:30:42.60 10.0 positive automatic P 243 3507.1449 0.988199 0.424061
AU.EIDS.BHZ. 2022-03-19T21:30:24.22 10.0 positive automatic P 263 3291.9825 -0.186837 0.43956
AU.ARMA.BHZ. 2022-03-19T21:30:19.87 10.0 positive automatic P 253 3212.007 1.70111 0.43956
G.PPTF.BHZ.00 2022-03-19T21:29:55.40 10.0 negative automatic pP 78 2858.6829 5.87414 0.909091
IU.AFI.BHZ.00 2022-03-19T21:29:17.00 10.0 positive automatic S 20 1349.1384 -8.75732 0
NZ.ODZ.HHZ.10 2022-03-19T21:29:15.76 10.0 negative automatic P 205 2486.511 -1.44224 0.980392
G.SANVU.BHZ.00 2022-03-19T21:28:36.55 10.0 positive automatic P 299 2063.2236 0.74236 0.851064
NZ.KHZ.HHZ.10 2022-03-19T21:28:35.32 10.0 positive automatic P 204 2116.437 -5.75919 0.985222
IU.SNZO.BHZ.00 2022-03-19T21:28:24.75 10.0 positive automatic P 204 1962.0693 -0.062119 0.963855
IU.FUNA.BHZ.00 2022-03-19T21:28:22.30 10.0 positive automatic P 344 1940.0247 -0.0266884 0.909091
IU.RAR.BHZ.00 2022-03-19T21:27:55.87 10.0 positive automatic P 78 1717.2033 -0.836836 0.952381
IU.AFI.BHZ.00 2022-03-19T21:27:07.82 10.0 negative automatic P 20 1349.1384 -3.93382 0.879121
II.MSVF.BHZ.00 2022-03-19T21:26:37.82 10.0 positive automatic P 323 1047.2517 3.28866 0.909091
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