Earthquake with magnitude of Mwp 6.1 on date 04-11-2019 and time 22:53:24 (Italy) in region Near coast of central Chile [Land: Chile]

A magnitude Mwp 6.1 earthquake occured in region: Near coast of central Chile [Land: Chile], on

  • 04-11-2019 21:53:24 (UTC)
  • 04-11-2019 22:53:24 (UTC +01:00) Italian time
  • 04-11-2019 18:53:24 (UTC -03:00) local time in the region of the earthquake (America/Santiago)

and geographic coordinates (lat, lon) -31.8, -71.45 at 56 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 5.6
Mwp 6.1

Mwpd 6.5
2019-11-04
21:53:24
-31.8 -71.45 56 2019-11-04
22:12:56
Sala Sismica INGV-Roma 73645381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-04 21:53:24
Latitude -31.80
Longitude -71.45
Depth (km) 56 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 73645381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4235
Semi-minor axis of confidence ellipse (meter) 1444
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 3577.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87.7702
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.4029
Epicentral distance of station closest to the epicenter (degree) 0.70842
Epicentral distance of station farthest from the epicenter (degree) 54.4642
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 36
Magnitudes information

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 20
Type of magnitude Mwp
Reference to an origin 73645381
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-11-04 22:12:56

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.3
Num. used stations 9
Type of magnitude Mwpd
Reference to an origin 73645381
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-11-04 22:12:56

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 16
Type of magnitude mb
Reference to an origin 73645381
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-11-04 22:12:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.TEIG.BHZ.00 2019-11-04T22:02:44.87 10.0 positive automatic P 341 54.4642 -0.574869 0.4885
GE.SNAA.BHZ. 2019-11-04T22:02:38.31 10.0 positive automatic P 159 53.2945 1.26881 0
CU.GRTK.BHZ.00 2019-11-04T22:02:35.80 10.0 positive automatic P 0 53.3089 -1.21017 0.531588
CU.GTBY.BHZ.00 2019-11-04T22:02:25.25 10.0 positive automatic P 356 51.8422 -0.930458 0.479242
CU.SDDR.BHZ.00 2019-11-04T22:02:16.65 10.0 positive automatic P 0 50.779 -1.65604 0.255602
CU.MTDJ.BHZ.00 2019-11-04T22:02:14.48 10.0 positive automatic P 352 50.3617 -0.748236 0.547711
IU.SJG.BHZ.00 2019-11-04T22:02:11.12 10.0 positive automatic P 7 50.164 -2.52186 0.577817
CU.ANWB.BHZ.00 2019-11-04T22:02:11.00 10.0 positive automatic P 12 50.3263 -2.80835 0.259082
CU.TGUH.BHZ.00 2019-11-04T22:01:59.60 10.0 positive automatic P 339 48.2979 0.0801027 0.581903
CU.GRGR.BHZ.00 2019-11-04T22:01:31.85 10.0 positive automatic P 14 44.9211 -1.09056 0.655317
II.JTS.BHZ.00 2019-11-04T22:01:26.15 10.0 positive automatic P 341 44.0272 0.312644 0.696432
IU.RCBR.BHZ.00 2019-11-04T22:01:10.87 10.0 positive automatic P 60 42.1457 0.220951 0.706393
CU.BCIP.BHZ.00 2019-11-04T22:01:08.20 10.0 positive automatic P 348 41.7415 0.900975 0.631319
II.HOPE.BHZ.00 2019-11-04T21:59:59.22 10.0 negative automatic P 143 33.4413 2.0201 0.879013
IU.PMSA.BHZ.00 2019-11-04T21:59:57.92 10.0 negative automatic P 174 33.2905 2.02902 0.882171
IU.OTAV.BHZ.00 2019-11-04T21:59:52.77 10.0 positive automatic P 347 32.7128 1.32566 0.766557
G.SPB.BHZ.00 2019-11-04T21:58:19.45 10.0 positive automatic P 75 22.7356 -1.58103 0.833333
II.EFI.BHZ.00 2019-11-04T21:58:15.02 10.0 negative automatic P 158 22.1632 0.136475 0.952381
C1.MG02.BHZ. 2019-11-04T21:58:05.03 10.0 positive automatic P 176 21.0431 2.12022 0.43956
II.NNA.BHZ.00 2019-11-04T21:57:57.77 10.0 positive automatic P 345 20.423 1.46644 0.816327
GT.LPAZ.BHZ.00 2019-11-04T21:57:01.80 10.0 positive automatic P 12 15.801 -1.55851 0.963855
G.COYC.BHZ.00 2019-11-04T21:56:35.45 10.0 positive automatic P 182 13.7822 -0.777923 0.869565
C1.VA04.BHZ. 2019-11-04T21:56:07.90 10.0 positive automatic S 251 6.4739 -0.715422 0
C1.LL02.BHZ. 2019-11-04T21:56:01.50 10.0 negative automatic P 181 11.3955 -2.23882 0.97561
C1.LL01.BHZ. 2019-11-04T21:55:51.58 10.0 negative automatic P 184 10.6069 -1.34233 0.963855
GT.PLCA.BHZ.00 2019-11-04T21:55:29.88 10.0 positive automatic P 176 8.9628 -0.735999 0.879121
C.GO06.BHZ. 2019-11-04T21:55:14.15 10.0 positive automatic P 180 7.7847 -0.37013 0.952381
C.GO02.BHZ. 2019-11-04T21:55:00.03 10.0 negative automatic P 14 6.8341 -1.70623 0.97561
C1.VA04.BHZ. 2019-11-04T21:54:58.10 10.0 positive automatic P 251 6.4739 1.72503 0.963855
C.GO03.BHZ. 2019-11-04T21:54:27.53 10.0 positive automatic P 14 4.3355 0.351026 0.941176
C.GO05.BHZ. 2019-11-04T21:54:11.70 10.0 positive automatic P 187 3.2357 -0.30055 0.963855
C1.BO02.BHZ. 2019-11-04T21:54:10.22 10.0 positive automatic P 170 3.0453 0.69199 0.963855
IU.LCO.BHZ.00 2019-11-04T21:54:08.22 10.0 positive automatic P 13 2.8618 0.960069 0.952381
WA.ZON.HHZ. 2019-11-04T21:54:02.44 10.0 negative automatic P 85 2.3682 2.19199 0.961538
C.GO04.BHZ. 2019-11-04T21:53:52.63 10.0 negative automatic P 19 1.7194 0.993106 0.941176
G.PEL.BHZ.00 2019-11-04T21:53:48.35 10.0 positive automatic P 154 1.4956 -0.0024644 0.930233
C1.CO02.BHZ. 2019-11-04T21:53:38.00 10.0 positive automatic P 33 0.7084 -0.0404604 0.963855
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