Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.6 on date 20-01-2023 and time 22:09:38 (UTC) in region Santiago del Estero Province, Argentina [Land: Argentina]

A magnitude Mwp 6.6 earthquake occured in region: Santiago del Estero Province, Argentina [Land: Argentina], on

  • 20-01-2023 22:09:38 (UTC)
  • 20-01-2023 23:09:38 (UTC +01:00) Italian time
  • 20-01-2023 19:09:38 (UTC -03:00) local time in the region of the earthquake (America/Argentina/Tucuman)

and geographic coordinates (lat, lon) -26.7150, -63.2130 at 596 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 5.8
Mwp 6.6
Mwpd 6.8 		2023-01-20
22:09:38		 -26.7152 -63.2133 596 2023-01-20
22:24:14		 Sala Sismica INGV-Roma 113707581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-20 22:09:38
Latitude -26.7152
Longitude -63.2133
Depth (km) 596 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 113707581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6591
Semi-minor axis of confidence ellipse (meter) 6013
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 6459.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 36.4303
Number of associated phases, regardless of their use for origin computation 123
Number of defining phases 123
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.26706
Epicentral distance of station closest to the epicenter (degree) 5.27669
Epicentral distance of station farthest from the epicenter (degree) 81.51871
Number of stations at which the event was observed 102
Number of stations from which data was used for origin computation 102
Magnitudes information

Mwp:6.6

Field Value
Value 6.6
Uncertainty 0.1
Num. used stations 73
Type of magnitude Mwp
Reference to an origin 113707581
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-01-20 22:24:14

Mwpd:6.8

Field Value
Value 6.8
Uncertainty 0.1
Num. used stations 60
Type of magnitude Mwpd
Reference to an origin 113707581
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-01-20 22:24:14

mb:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 75
Type of magnitude mb
Reference to an origin 113707581
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-01-20 22:24:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
US.BW06.BHZ.00 2023-01-20T22:20:54.75 10.0 negative automatic P 328 81.5187 0.0839653 0
US.DUG.BHZ.00 2023-01-20T22:20:53.35 10.0 positive automatic P 324 81.2489 0.189039 0.169538
US.AGMN.BHZ.00 2023-01-20T22:20:49.00 10.0 negative automatic P 339 80.5163 -0.200951 0.174308
WM.AVE.BHZ. 2023-01-20T22:20:47.05 10.0 negative automatic P 45 80.0430 0.323893 0.17454
IU.RSSD.BHZ.00 2023-01-20T22:20:46.95 10.0 negative automatic P 332 80.0763 -0.275039 0.17633
G.PPTF.BHZ.00 2023-01-20T22:20:45.35 10.0 positive automatic P 256 79.0418 3.78645 0.171729
US.ISCO.BHZ.00 2023-01-20T22:20:33.75 10.0 negative automatic P 328 77.3452 0.889777 0.20548
US.WUAZ.BHZ.00 2023-01-20T22:20:32.60 10.0 negative automatic P 322 77.0635 1.46097 0.201019
US.MVCO.BHZ.00 2023-01-20T22:20:30.73 10.0 negative automatic P 324 76.7670 1.09747 0.208893
US.OGNE.BHZ.00 2023-01-20T22:20:29.30 10.0 negative automatic P 331 76.6366 0.575415 0.212797
GT.BOSA.BHZ.00 2023-01-20T22:20:28.65 10.0 negative automatic P 115 76.3313 1.54974 0.218654
US.ECSD.BHZ.00 2023-01-20T22:20:28.78 10.0 negative automatic P 336 76.8144 -0.81938 0.208407
G.TAOE.BHZ.00 2023-01-20T22:20:19.56 10.0 positive automatic P 268 74.4081 3.19788 0.222528
IU.TUC.BHZ.00 2023-01-20T22:20:17.15 10.0 negative automatic P 320 74.3886 0.872624 0.231214
IU.ANMO.BHZ.00 2023-01-20T22:20:15.07 10.0 negative automatic P 324 73.9838 0.912597 0.241322
US.GLMI.BHZ.00 2023-01-20T22:20:14.23 10.0 negative automatic P 344 74.1568 -0.657248 0.239407
US.CBKS.BHZ.00 2023-01-20T22:20:14.03 10.0 negative automatic P 331 73.8834 0.632687 0.242437
IU.TSUM.BHZ.00 2023-01-20T22:20:13.42 10.0 negative automatic P 104 73.5712 1.69209 0.240066
US.SCIA.BHZ.00 2023-01-20T22:20:13.23 10.0 negative automatic P 337 74.0084 -0.810356 0.238145
US.JFWS.BHZ.00 2023-01-20T22:20:12.25 10.0 positive automatic P 340 73.9389 -1.39699 0.238907
GE.SNAA.BHZ. 2023-01-20T22:20:10.76 10.0 positive automatic pP 161 55.5533 -0.0446456 0
PM.ROSA.BHZ. 2023-01-20T22:20:09.70 10.0 negative automatic P 28 73.1444 0.553848 0.244753
CN.GAC.BHZ. 2023-01-20T22:20:09.80 10.0 positive automatic P 351 73.2691 -0.00925567 0.237718
US.KSU1.BHZ.00 2023-01-20T22:20:06.73 10.0 negative automatic P 333 72.8267 -0.606384 0.251263
US.LONY.BHZ.00 2023-01-20T22:20:03.08 10.0 negative automatic P 352 72.0846 -0.0174629 0.262846
US.PKME.BHZ.00 2023-01-20T22:20:03.90 10.0 negative automatic P 356 72.1893 0.262665 0.258484
GE.WIN.BHZ. 2023-01-20T22:20:03.50 10.0 negative automatic P 107 71.8503 1.53602 0.259242
IU.SBA.BHZ.00 2023-01-20T22:20:02.17 10.0 positive automatic P 190 71.4213 2.9876 0.264139
US.LBNH.BHZ.00 2023-01-20T22:19:59.40 10.0 negative automatic P 353 71.3992 0.291096 0.258243
US.AMTX.BHZ.00 2023-01-20T22:19:59.98 10.0 negative automatic P 327 71.5390 -0.057864 0.26279
US.AAM.BHZ.00 2023-01-20T22:19:58.45 10.0 positive automatic P 344 71.5460 -1.47933 0.27244
IU.MACI.BHZ.00 2023-01-20T22:19:56.45 10.0 negative automatic P 43 70.9220 -0.111854 0.254731
US.MNTX.BHZ.00 2023-01-20T22:19:55.60 10.0 negative automatic P 323 70.9058 -0.643437 0.273335
US.ERPA.BHZ.00 2023-01-20T22:19:53.98 10.0 negative automatic P 347 70.5524 -0.177587 0.284349
US.WMOK.BHZ.00 2023-01-20T22:19:50.63 10.0 negative automatic P 329 70.0635 -0.679296 0.286762
US.BINY.BHZ.00 2023-01-20T22:19:50.43 10.0 negative automatic P 350 69.9136 0.00257105 0.285099
IU.CCM.BHZ.00 2023-01-20T22:19:49.30 10.0 negative automatic P 337 69.8927 -0.956612 0.28883
IU.HRV.BHZ.00 2023-01-20T22:19:48.82 10.0 negative automatic P 353 69.6452 0.0423025 0.271943
US.ACSO.BHZ.00 2023-01-20T22:19:46.68 10.0 negative automatic P 344 69.4245 -0.805282 0.298175
IU.SSPA.BHZ.00 2023-01-20T22:19:43.25 10.0 negative automatic P 348 68.7141 0.0176315 0.303309
US.MCWV.BHZ.00 2023-01-20T22:19:40.03 10.0 negative automatic P 346 68.1578 0.145962 0.310266
US.MIAR.BHZ.00 2023-01-20T22:19:36.63 10.0 negative automatic P 333 67.6689 -0.283049 0.312631
US.JCT.BHZ.00 2023-01-20T22:19:33.45 10.0 negative automatic P 326 67.0374 0.32806 0.324515
IU.WVT.BHZ.00 2023-01-20T22:19:31.42 10.0 negative automatic P 339 66.9909 -1.34573 0.325114
US.CBN.BHZ.00 2023-01-20T22:19:28.30 10.0 negative automatic P 348 66.2588 0.0542326 0.334607
US.BLA.BHZ.00 2023-01-20T22:19:26.35 10.0 negative automatic P 345 65.9378 -0.0109206 0.326854
US.TZTN.BHZ.00 2023-01-20T22:19:26.23 10.0 negative automatic P 342 66.0917 -1.04352 0.112264
US.NATX.BHZ.00 2023-01-20T22:19:25.68 10.0 negative automatic P 331 65.7098 0.808062 0.341815
GT.DBIC.BHZ.00 2023-01-20T22:19:24.73 10.0 negative automatic P 68 65.5888 0.615978 0.343414
IM.TKL.BHZ. 2023-01-20T22:19:21.49 10.0 negative automatic P 342 65.3216 -0.987773 0.346958
IU.HKT.BHZ.00 2023-01-20T22:19:19.15 10.0 negative automatic P 329 64.7037 0.664357 0.355223
US.VBMS.BHZ.00 2023-01-20T22:19:16.48 10.0 negative automatic P 335 64.4135 -0.255361 0.359141
US.KVTX.BHZ.00 2023-01-20T22:19:13.65 10.0 negative automatic P 326 63.6767 1.58154 0.364731
US.LRAL.BHZ.00 2023-01-20T22:19:10.85 10.0 positive automatic P 338 63.8869 -2.57293 0.18315
US.GOGA.BHZ.00 2023-01-20T22:19:07.68 10.0 negative automatic P 341 63.1260 -0.904624 0.376772
MX.ZAIG.BHZ. 2023-01-20T22:19:06.21 10.0 negative automatic P 319 62.4234 1.73515 0.386571
US.BRAL.BHZ.00 2023-01-20T22:19:02.10 10.0 negative automatic P 337 62.1940 -0.489627 0.3898
US.NHSC.BHZ.00 2023-01-20T22:19:01.28 10.0 negative automatic P 344 61.9546 0.245854 0.388445
MX.MOIG.BHZ. 2023-01-20T22:18:45.04 10.0 negative automatic P 318 59.2244 1.57378 0.422479
IU.BBSR.BHZ.00 2023-01-20T22:18:39.95 10.0 positive automatic P 359 59.1008 -2.35561 0.439986
IU.DWPF.BHZ.00 2023-01-20T22:18:31.52 10.0 negative automatic P 341 57.5471 -0.348577 0.436749
II.SACV.BHZ.00 2023-01-20T22:18:25.75 10.0 negative automatic P 47 56.7177 -0.547451 0.454199
MX.TLIG.BHZ. 2023-01-20T22:18:23.02 10.0 negative automatic P 318 56.0160 1.40712 0.459342
GE.SNAA.BHZ. 2023-01-20T22:18:19.31 10.0 negative automatic P 161 55.5533 0.93737 0.477385
II.SHEL.BHZ.00 2023-01-20T22:18:10.62 10.0 negative automatic P 91 54.1621 1.96588 0.499066
IU.TEIG.BHZ.00 2023-01-20T22:17:58.60 10.0 negative automatic P 330 52.8534 -0.75309 0.526168
MX.CCIG.BHZ. 2023-01-20T22:17:48.60 10.0 negative automatic P 324 51.3567 -0.335241 0.544255
CU.GRTK.BHZ.00 2023-01-20T22:17:29.42 10.0 negative automatic P 350 48.8306 -0.84564 0.600929
CU.MTDJ.BHZ.00 2023-01-20T22:17:16.68 10.0 negative automatic P 341 47.0397 -0.448404 0.632683
CU.TGUH.BHZ.00 2023-01-20T22:17:16.48 10.0 negative automatic P 327 46.9953 -0.356846 0.618396
CU.SDDR.BHZ.00 2023-01-20T22:17:10.08 10.0 negative automatic P 349 46.3620 -1.90313 0.622151
GE.BOAB.BHZ. 2023-01-20T22:17:00.40 10.0 negative automatic P 328 44.8269 0.0942323 0.65702
IU.SJG.BHZ.00 2023-01-20T22:16:58.12 10.0 negative automatic P 356 44.9129 -2.84632 0.647755
CU.ANWB.BHZ.00 2023-01-20T22:16:53.90 10.0 negative automatic P 2 44.4034 -3.11289 0.672708
II.JTS.BHZ.00 2023-01-20T22:16:44.00 10.0 negative automatic P 327 42.6008 1.85968 0.71491
G.HDC.BHZ.00 2023-01-20T22:16:40.60 10.0 negative automatic P 328 41.9483 2.41378 0.710102
II.RPN.BHZ.00 2023-01-20T22:16:32.37 10.0 positive automatic P 259 40.8837 2.74429 0.730255
CU.BBGH.BHZ.00 2023-01-20T22:16:23.63 10.0 negative automatic P 6 40.0147 0.874971 0.746912
CU.GRGR.BHZ.00 2023-01-20T22:16:12.77 10.0 negative automatic P 2 38.8755 -0.873952 0.787795
IU.PMSA.BHZ.00 2023-01-20T22:16:07.77 10.0 positive automatic P 181 38.0612 0.714651 0.766791
C1.LL01.BHZ. 2023-01-20T22:15:57.05 10.0 positive automatic S 203 17.3729 -1.27562 0
IU.SDV.BHZ.00 2023-01-20T22:15:51.45 10.0 negative automatic P 348 36.3187 -1.70122 0.839863
II.HOPE.BHZ.00 2023-01-20T22:15:32.97 10.0 positive automatic P 152 33.8223 0.751511 0.871065
G.MPG.BHZ.00 2023-01-20T22:15:28.65 10.0 negative automatic P 19 33.4278 -0.291137 0.858848
C.GO06.BHZ. 2023-01-20T22:15:13.70 10.0 negative automatic S 206 14.5915 0.606596 0
C.GO10.BHZ. 2023-01-20T22:14:35.75 10.0 positive automatic P 190 27.0748 1.09817 0.963855
II.EFI.BHZ.00 2023-01-20T22:14:17.40 10.0 positive automatic P 173 25.2608 -1.25021 0.952381
GT.LPAZ.BHZ.00 2023-01-20T22:14:13.35 10.0 positive automatic S 335 11.3826 -3.26658 0
C.GO05.BHZ. 2023-01-20T22:14:09.88 10.0 negative automatic S 220 11.1602 -1.29795 0
C1.BO02.BHZ. 2023-01-20T22:13:56.42 10.0 negative automatic S 217 10.3619 -0.381518 0
G.COYC.BHZ.00 2023-01-20T22:13:32.60 10.0 positive automatic P 198 20.1399 -0.541123 0.930233
II.NNA.BHZ.00 2023-01-20T22:13:28.87 10.0 negative automatic P 316 19.5163 1.29604 0.952381
C1.LL02.BHZ. 2023-01-20T22:13:11.70 10.0 positive automatic P 201 17.9056 -1.21684 0.963855
BL.PMNB.HHZ. 2023-01-20T22:13:10.21 10.0 negative automatic P 66 17.4823 1.05545 0.930233
C1.LL01.BHZ. 2023-01-20T22:13:06.38 10.0 positive automatic P 203 17.3729 -1.63119 0.235294
IU.LCO.BHZ.00 2023-01-20T22:12:57.07 10.0 negative automatic S 249 7.0039 -0.861555 0
C1.VA04.BHZ. 2023-01-20T22:12:48.18 10.0 positive automatic P 239 15.1486 0.532709 0.952381
GT.PLCA.BHZ.00 2023-01-20T22:12:47.30 10.0 positive automatic P 202 15.2729 -1.64454 0.963855
C.GO06.BHZ. 2023-01-20T22:12:41.15 10.0 positive automatic P 206 14.5915 -1.56327 0.952381
C.GO02.BHZ. 2023-01-20T22:12:41.38 10.0 negative automatic S 284 5.9400 0.670325 0
GT.LPAZ.BHZ.00 2023-01-20T22:12:11.55 10.0 negative automatic P 335 11.3826 0.304917 0.97561
C.GO05.BHZ. 2023-01-20T22:12:06.80 10.0 positive automatic P 220 11.1602 -1.39646 0.97561
C1.BO02.BHZ. 2023-01-20T22:11:59.72 10.0 positive automatic P 217 10.3619 -0.626917 0.97561
G.PEL.BHZ.00 2023-01-20T22:11:47.80 10.0 positive automatic P 223 9.1121 -0.159182 0.97561
C1.CO02.BHZ. 2023-01-20T22:11:38.68 10.0 negative automatic P 235 8.1547 -0.100904 0.97561
C.GO04.BHZ. 2023-01-20T22:11:33.00 10.0 negative automatic P 241 7.5100 0.161721 0.987654
IU.LCO.BHZ.00 2023-01-20T22:11:28.62 10.0 negative automatic P 249 7.0039 0.439215 0.97561
WA.ZON.HHZ. 2023-01-20T22:11:26.13 10.0 negative automatic P 223 6.7924 0.134863 0.985222
C.GO02.BHZ. 2023-01-20T22:11:19.80 10.0 negative automatic P 284 5.9400 1.03605 0.97561
GT.CPUP.BHZ.00 2023-01-20T22:11:13.58 10.0 positive automatic P 87 5.2767 0.795719 0.987654
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