Earthquake with magnitude of ML 2.4 on date 23-12-2021 and time 04:20:03 (Italy) in region Costa Croata Settentrionale (CROAZIA)

A magnitude ML 2.4 earthquake occured in region: Costa Croata Settentrionale (CROAZIA), on

  • 23-12-2021 03:20:03 (UTC)
  • 23-12-2021 04:20:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.2320, 14.7020 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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

An earthquake occurred to
86 Km SE of Trieste (204420 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
Bulletin
Rev1000
ML 2.4 2021-12-23
03:20:03
45.2317 14.7022 9 2022-03-30
13:04:36
Bollettino Sismico Italiano INGV 100803331
Reviewed
Rev100
ML 2.4 2021-12-23
03:20:04
45.2877 14.736 4 2021-12-23
03:57:57
Sala Sismica INGV-Roma 98839461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-23 03:20:03 ± 0.69
Latitude 45.2317 ± 0.0513
Longitude 14.7022 ± 0.0613
Depth (km) 9 ± 9 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100803331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6195
Semi-minor axis of confidence ellipse (meter) 3468
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 6200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 305
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0.76262
Epicentral distance of station farthest from the epicenter (degree) 1.90926
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 98839461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-23 03:57:57

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 33
Type of magnitude ML
Reference to an origin 100803331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-25 13:49:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.BAD.HHE. 2021-12-23T03:20:50.83 0.3 undecidable manual S 315 158.4192 50 1.57 35
NI.VINO.HHZ. 2021-12-23T03:20:49.80 0.6 undecidable manual S 316 158.3193 50 0.59 38
OX.DRE.HHZ. 2021-12-23T03:20:43.05 0.6 undecidable manual S 322 132.7671 50 0.66 40
OX.SABO.HHZ. 2021-12-23T03:20:38.14 0.6 undecidable manual S 316 117.8931 50 -0.29 46
IV.FVI.HHZ. 2021-12-23T03:20:38.68 0.6 undecidable manual P 316 211.9323 38 1.35 20
OX.CAE.HHZ. 2021-12-23T03:20:35.67 0.3 undecidable manual P 297 195.6597 38 0.36 51
OX.PLRO.HHZ. 2021-12-23T03:20:35.57 0.6 undecidable manual P 321 189.0663 38 1.08 27
OX.MLN.HHZ. 2021-12-23T03:20:34.13 0.3 undecidable manual P 303 191.0643 38 -0.61 49
IV.STAL.HHZ. 2021-12-23T03:20:34.71 0.3 undecidable manual P 307 191.7636 38 -0.12 55
NI.PALA.HHZ. 2021-12-23T03:20:33.71 0.3 undecidable manual P 310 177.6888 50 0.64 51
IV.PTCC.HHE. 2021-12-23T03:20:32.16 0.3 undecidable manual P 322 167.0106 50 0.75 52
RF.GEPF.HHZ. 2021-12-23T03:20:32.00 0.3 undecidable manual P 314 167.4102 50 0.51 57
OX.MPRI.HHZ. 2021-12-23T03:20:32.95 0.3 undecidable manual P 311 173.5929 50 0.51 55
OX.BAD.HHE. 2021-12-23T03:20:31.09 0.3 undecidable manual P 315 158.4192 50 0.98 49
MN.TRI.HHZ. 2021-12-23T03:20:30.56 0.6 undecidable manual S 306 90.1431 50 -0.47 47
OX.PRED.HHE. 2021-12-23T03:20:30.18 0.6 undecidable manual P 327 160.5171 50 -0.25 42
NI.VINO.HHZ. 2021-12-23T03:20:30.26 0.3 undecidable manual P 316 158.3193 50 0.18 64
SL.LJU.BHE. 2021-12-23T03:20:30.50 0.3 undecidable manual S 352 91.1421 50 -0.78 62
NI.DST2.HNZ. 2021-12-23T03:20:28.77 0.6 undecidable manual S 304 84.6486 50 -0.78 43
OX.DRE.HHZ. 2021-12-23T03:20:25.45 0.3 undecidable manual P 322 132.7671 50 -0.69 60
OX.SABO.HHZ. 2021-12-23T03:20:22.78 0.3 undecidable manual P 316 117.8931 50 -1.08 52
SL.LJU.BHE. 2021-12-23T03:20:19.93 0.1 undecidable manual P 352 91.1421 50 0.21 100
MN.TRI.HHZ. 2021-12-23T03:20:18.31 0.3 undecidable manual P 306 90.1431 50 -1.27 50
NI.DST2.HNZ. 2021-12-23T03:20:17.51 0.3 undecidable manual P 304 84.6486 50 -1.22 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HNN. ML:3.0 0.0007540534999999999 0.68 AML other m 2021-12-23T03:20:39.48
OX.SABO.HHN. ML:2.4 0.00018531880000000002 0.6992 AML other m 2021-12-23T03:20:39.47
OX.SABO.HHE. ML:2.2 0.00011074670000000001 0.24 AML other m 2021-12-23T03:20:40.87
OX.SABO.HNE. ML:2.9 0.00054949015 0.3216 AML other m 2021-12-23T03:20:41.10
OX.DRE.HNE. ML:2.3 0.00013454561 0.1792 AML other m 2021-12-23T03:20:47.28
OX.DRE.HHE. ML:2.4 0.00014888155 0.1792 AML other m 2021-12-23T03:20:47.28
OX.DRE.HHN. ML:2.4 0.0001492311 0.32 AML other m 2021-12-23T03:20:47.71
OX.DRE.HNN. ML:2.3 0.00013662459999999997 0.32 AML other m 2021-12-23T03:20:47.71
NI.VINO.HNN. ML:4.4 0.0110733325 0.6992 AML other m 2021-12-23T03:20:49.88
NI.VINO.HHE. ML:2.2 0.00007199999999999999 1.2 AML other m 2021-12-23T03:20:51.70
NI.VINO.HHN. ML:2.2 0.00007255 0.44 AML other m 2021-12-23T03:20:53.06
RF.GEPF.HHE. ML:2.2 0.000061782805 0.4608 AML other m 2021-12-23T03:20:53.99
OX.MPRI.HHE. ML:2.2 0.00005855 1.06 AML other m 2021-12-23T03:20:56.29
OX.MPRI.HNE. ML:2.2 0.00005862461 0.48 AML other m 2021-12-23T03:20:56.94
OX.MPRI.HHN. ML:2.4 0.0001069 0.66 AML other m 2021-12-23T03:20:57.26
NI.PALA.HHN. ML:2.5 0.0001209796 0.56 AML other m 2021-12-23T03:20:58.81
RF.GEPF.HHN. ML:2.2 0.00007419422 0.3392 AML other m 2021-12-23T03:20:58.69
NI.PALA.HHE. ML:2.5 0.00013169980000000002 0.4992 AML other m 2021-12-23T03:20:59.82
OX.MLN.HNE. ML:2.6 0.00013276761 0.52 AML other m 2021-12-23T03:20:59.42
OX.MLN.HHE. ML:2.0 0.00003087086 0.24 AML other m 2021-12-23T03:21:01.52
IV.STAL.HNN. ML:2.8 0.00018112535 0.32 AML other m 2021-12-23T03:21:01.80
OX.PLRO.HNE. ML:2.9 0.000242 0.38 AML other m 2021-12-23T03:21:02.44
OX.PLRO.HHE. ML:2.5 0.00011300000000000001 0.44 AML other m 2021-12-23T03:21:02.26
OX.PLRO.HNN. ML:3.0 0.0003605 0.44 AML other m 2021-12-23T03:21:02.85
OX.PLRO.HHN. ML:2.8 0.0002065 1.56 AML other m 2021-12-23T03:21:03.85
OX.CAE.HHN. ML:2.4 0.00007615 0.38 AML other m 2021-12-23T03:21:03.27
IV.STAL.HHE. ML:2.6 0.00011733125499999999 0.28 AML other m 2021-12-23T03:21:03.89
OX.MLN.HHN. ML:2.0 0.00003618193 0.28 AML other m 2021-12-23T03:21:04.68
IV.STAL.HHN. ML:2.4 0.00008681923999999999 0.28 AML other m 2021-12-23T03:21:06.30
IV.STAL.HNE. ML:2.6 0.00013948295 0.3296 AML other m 2021-12-23T03:21:06.29
OX.CAE.HHE. ML:2.4 0.000068198065 0.24 AML other m 2021-12-23T03:21:07.15
IV.FVI.HHN. ML:2.2 0.00003755 0.56 AML other m 2021-12-23T03:21:08.23
IV.FVI.HHE. ML:2.3 0.00005374247 0.3808 AML other m 2021-12-23T03:21:10.45
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
Waveforms Seismic signals in miniseed + resp format Download