Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.5 on date 09-04-2019 and time 19:54:05 (Italy) in region South Georgia & the South Sandwich Is. [Sea]

A magnitude Mwp 6.5 earthquake occured in region: South Georgia & the South Sandwich Is. [Sea], on

  • 09-04-2019 17:54:05 (UTC)
  • 09-04-2019 19:54:05 (UTC +02:00) Italian time
  • 09-04-2019 15:54:05 (UTC -02:00) local time in the region of the earthquake (Atlantic/South_Georgia)

and geographic coordinates (lat, lon) -58.51, -25.2 at 84 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
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 5.7
Mwp 6.5
Mwpd 6.6 		2019-04-09
17:54:05		 -58.51 -25.2 84 2019-04-09
18:15:19		 Sala Sismica INGV-Roma 67413741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-09 17:54:05
Latitude -58.51
Longitude -25.20
Depth (km) 84 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 67413741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 13203
Semi-minor axis of confidence ellipse (meter) 11200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 316
Circular confidence region, given by single value of horizontal uncertainty (meter) 13022
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40.7324
Number of associated phases, regardless of their use for origin computation 82
Number of defining phases 82
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.61344
Epicentral distance of station closest to the epicenter (degree) 7.5279
Epicentral distance of station farthest from the epicenter (degree) 130.38525
Number of stations at which the event was observed 77
Number of stations from which data was used for origin computation 77
Magnitudes information

Mwpd:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 42
Type of magnitude Mwpd
Reference to an origin 67413741
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-04-09 18:15:19

Mwp:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 42
Type of magnitude Mwp
Reference to an origin 67413741
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-04-09 18:15:19

mb:5.7

Field Value
Value 5.7
Uncertainty 0.1
Num. used stations 59
Type of magnitude mb
Reference to an origin 67413741
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-04-09 18:15:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.HAWA.BHZ.00 2019-04-09T18:10:05.70 10.0 positive automatic Pdiff 296 130.1353 11.5557 0
US.NEW.BHZ.00 2019-04-09T18:09:59.00 10.0 positive automatic Pdiff 299 130.3853 3.67678 0
UW.BRAN.BHZ. 2019-04-09T18:09:42.08 10.0 positive automatic Pdiff 297 128.7493 -6.03563 0
US.EGMT.BHZ.00 2019-04-09T18:09:45.93 10.0 positive automatic Pdiff 304 126.9214 5.95183 0
US.BMO.BHZ.00 2019-04-09T18:09:40.00 10.0 positive automatic Pdiff 296 127.9494 -4.55927 0
US.RLMT.BHZ.00 2019-04-09T18:09:26.40 10.0 positive automatic Pdiff 302 124.4775 -2.88733 0
US.AHID.BHZ.00 2019-04-09T18:09:23.30 10.0 negative automatic Pdiff 299 123.4716 -1.49205 0
MN.TIP.BHZ. 2019-04-09T18:07:56.57 10.0 positive automatic Pdiff 32 103.7374 -0.283889 0
II.MSVF.BHZ.00 2019-04-09T18:07:50.47 10.0 negative automatic Pdiff 203 101.3725 4.12804 0
II.RAYN.BHZ.00 2019-04-09T18:07:43.20 10.0 positive automatic Pdiff 62 100.4816 0.839341 0
G.DZM.BHZ.00 2019-04-09T18:07:36.20 10.0 negative automatic P 191 98.8393 1.11077 0.041372
ND.ONTNC.BHZ.00 2019-04-09T18:07:35.39 10.0 positive automatic P 191 98.604 1.48737 0.0434083
IU.BBSR.BHZ.00 2019-04-09T18:07:23.57 10.0 positive automatic P 327 96.6625 -1.58779 0.0515841
IU.MBWA.BHZ.00 2019-04-09T18:07:18.80 10.0 negative automatic P 147 95.2125 0.203411 0.05969
AU.QLP.BHZ. 2019-04-09T18:07:15.30 10.0 positive automatic P 171 94.4494 0.190229 0.0661266
IU.TEIG.BHZ.00 2019-04-09T18:07:12.47 10.0 positive automatic P 303 94.1755 -1.34741 0.0669103
AU.WRKA.BHZ. 2019-04-09T18:07:12.10 10.0 negative automatic P 156 93.5891 0.867191 0.0711542
AU.GIRL.BHZ. 2019-04-09T18:07:07.45 10.0 negative automatic P 143 92.1706 2.84262 0.0762154
G.PPTF.BHZ.00 2019-04-09T18:07:04.45 10.0 negative automatic P 232 91.3389 3.59792 0.0851732
AU.ARMA.BHZ. 2019-04-09T18:07:00.77 10.0 negative automatic P 177 91.031 1.27384 0.0851617
G.ATD.BHZ.00 2019-04-09T18:06:51.85 10.0 positive automatic P 65 88.7959 2.87032 0.105034
CU.GRTK.BHZ.00 2019-04-09T18:06:46.80 10.0 positive automatic P 318 88.5456 -0.899852 0.103102
CU.GTBY.BHZ.00 2019-04-09T18:06:46.37 10.0 positive automatic P 314 88.528 -1.25917 0.104456
AU.FORT.BHZ. 2019-04-09T18:06:45.00 10.0 positive automatic P 157 87.9584 1.03913 0.107325
CU.TGUH.BHZ.00 2019-04-09T18:06:44.88 10.0 positive automatic P 301 88.2662 -1.70494 0.106352
II.DGAR.BHZ.00 2019-04-09T18:06:44.57 10.0 positive automatic P 100 87.6428 1.1415 0.10354
CU.MTDJ.BHZ.00 2019-04-09T18:06:44.20 10.0 positive automatic P 311 87.9064 -0.640043 0.105227
AU.HTT.BHZ. 2019-04-09T18:06:41.00 10.0 positive automatic P 167 87.1041 1.02918 0.1123
AU.MORW.BHZ. 2019-04-09T18:06:39.25 10.0 negative automatic P 147 86.6561 0.526286 0.115634
G.CAN.BHZ.00 2019-04-09T18:06:36.95 10.0 positive automatic P 175 86.0448 1.16385 0.117529
CU.SDDR.BHZ.00 2019-04-09T18:06:34.73 10.0 positive automatic P 317 86.2569 -2.08991 0.118646
G.TAM.BHZ.00 2019-04-09T18:06:32.15 10.0 positive automatic P 28 85.1956 0.450378 0.12396
AU.MILA.BHZ.00 2019-04-09T18:06:28.70 10.0 negative automatic P 175 84.318 1.51445 0.132289
AU.TOO.BHZ.00 2019-04-09T18:06:24.58 10.0 negative automatic P 173 83.6032 1.05581 0.138048
IU.NWAO.BHZ.00 2019-04-09T18:06:22.92 10.0 negative automatic P 149 83.3377 0.795428 0.145227
II.JTS.BHZ.00 2019-04-09T18:06:22.35 10.0 positive automatic P 301 83.8799 -2.5401 0.144085
IU.PMSA.BHZ.00 2019-04-09T18:06:16.17 10.0 positive automatic ScP 235 19.1313 7.44133 0
CU.ANWB.BHZ.00 2019-04-09T18:06:12.00 10.0 positive automatic P 325 81.8994 -1.60719 0.155857
II.MSEY.BHZ.00 2019-04-09T18:06:11.42 10.0 positive automatic P 84 81.1464 0.712411 0.146958
CU.BCIP.BHZ.00 2019-04-09T18:06:06.32 10.0 positive automatic P 305 80.6385 -1.61064 0.157807
IU.SNZO.BHZ.00 2019-04-09T18:05:59.85 10.0 positive automatic P 195 78.8154 1.7657 0.186215
G.FDF.BHZ.00 2019-04-09T18:05:57.90 10.0 positive automatic P 325 78.9213 -0.821195 0.18089
II.TAU.BHZ.00 2019-04-09T18:05:56.52 10.0 positive automatic P 174 78.389 0.780744 0.173791
CU.BBGH.BHZ.00 2019-04-09T18:05:48.95 10.0 positive automatic P 326 76.9331 1.29674 0.193271
CU.GRGR.BHZ.00 2019-04-09T18:05:44.67 10.0 positive automatic P 323 76.6079 -1.15624 0.200896
IU.KMBO.BHZ.00 2019-04-09T18:05:39.32 10.0 positive automatic P 67 75.0238 2.21023 0.219282
G.MBO.BHZ.00 2019-04-09T18:05:26.00 10.0 positive automatic P 8 73.2087 -0.212715 0.213585
II.SACV.BHZ.00 2019-04-09T18:05:26.00 10.0 positive automatic P 2 73.4856 -0.908433 0.227513
II.MBAR.BHZ.00 2019-04-09T18:05:23.92 10.0 positive automatic P 60 72.4453 1.98501 0.252583
GE.SBV.BHZ. 2019-04-09T18:05:13.60 10.0 positive automatic P 84 70.7917 1.82417 0.265149
G.MPG.BHZ.00 2019-04-09T18:04:49.00 10.0 positive automatic P 330 67.3042 -1.21042 0.313508
GT.DBIC.BHZ.00 2019-04-09T18:04:48.68 10.0 positive automatic P 22 67.2002 -0.875838 0.318602
II.ABPO.BHZ.00 2019-04-09T18:04:35.22 10.0 positive automatic P 85 64.7197 1.33566 0.31648
II.RPN.BHZ.00 2019-04-09T18:04:32.57 10.0 positive automatic P 260 64.1308 2.76886 0
GE.VOI.BHZ. 2019-04-09T18:04:17.45 10.0 positive automatic P 87 62.0926 0.954417 0.356517
G.FOMA.BHZ.00 2019-04-09T18:04:11.45 10.0 negative automatic pP 89 59.6658 -9.49748 0
II.NNA.BHZ.00 2019-04-09T18:04:03.72 10.0 positive automatic P 298 60.3813 -1.1211 0.387488
IU.LSZ.BHZ.00 2019-04-09T18:03:50.27 10.0 positive automatic P 65 58.3115 -0.420815 0.43589
IU.RCBR.BHZ.00 2019-04-09T18:03:14.27 10.0 positive automatic P 347 53.3262 -0.66731 0.489113
GT.LPAZ.BHZ.00 2019-04-09T18:03:09.80 10.0 positive automatic P 305 52.6782 -1.13001 0.522804
IU.CASY.BHZ.00 2019-04-09T18:02:57.97 10.0 negative automatic P 159 50.9341 0.832759 0.269247
IU.TSUM.BHZ.00 2019-04-09T18:02:50.67 10.0 positive automatic P 57 50.0156 0.23538 0.553455
G.CRZF.BHZ.00 2019-04-09T18:02:17.90 10.0 negative automatic P 110 45.6908 1.05246 0
GT.BOSA.BHZ.00 2019-04-09T18:02:15.50 10.0 positive automatic P 72 45.5413 -0.36529 0.652016
II.SHEL.BHZ.00 2019-04-09T18:02:11.67 10.0 positive automatic P 27 44.9218 0.834824 0.655394
GT.VNDA.BHZ.00 2019-04-09T18:02:03.78 10.0 negative automatic P 182 43.9033 1.12773 0.673916
IU.SBA.BHZ.00 2019-04-09T18:02:00.75 10.0 negative automatic P 184 43.4436 1.79587 0.623025
IU.LCO.BHZ.00 2019-04-09T18:01:52.92 10.0 positive automatic P 293 42.7988 -1.21635 0.694294
II.SUR.BHZ.00 2019-04-09T18:01:34.12 10.0 positive automatic P 70 40.2625 0.795177 0.677694
G.PEL.BHZ.00 2019-04-09T18:01:25.25 10.0 positive automatic P 290 39.3835 -0.603632 0.664323
GT.CPUP.BHZ.00 2019-04-09T18:01:22.68 10.0 positive automatic P 311 39.2222 -1.74121 0.771552
AU.MAW.BHZ. 2019-04-09T18:01:08.26 10.0 negative automatic P 141 37.3334 -0.285035 0.790191
GT.PLCA.BHZ.00 2019-04-09T18:00:34.45 10.0 positive automatic P 282 33.4261 -0.774247 0.811787
G.COYC.BHZ.00 2019-04-09T18:00:12.40 10.0 positive automatic P 274 30.8082 0.238231 0.913308
II.EFI.BHZ.00 2019-04-09T17:58:28.42 10.0 positive automatic P 276 19.7717 0.711237 0.952381
IU.PMSA.BHZ.00 2019-04-09T17:58:21.57 10.0 positive automatic P 235 19.1313 0.842846 0.930233
GE.SNAA.BHZ. 2019-04-09T17:57:39.81 10.0 negative automatic P 154 15.9759 -4.38068 0.869565
II.HOPE.BHZ.00 2019-04-09T17:55:53.37 10.0 positive automatic P 299 7.5279 2.02293 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