Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 25-12-2023 and time 07:27:45 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude ML 1.8 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 25-12-2023 06:27:45 (UTC)
  • 25-12-2023 07:27:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.0800, 13.7320 at 7 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Stregna UD 13 356 356
Drenchia UD 14 115 471
Grimacco UD 14 342 813
San Floriano del Collio GO 16 796 1609
San Leonardo UD 17 1129 2738
Gorizia GO 18 34844 37582
Savogna UD 18 411 37993
San Pietro al Natisone UD 20 2171 40164
Prepotto UD 20 769 40933

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Udine (99169 inhabitants)
48 Km N of Trieste (204420 inhabitants)
84 Km E of Pordenone (51229 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 		ML 1.8 2023-12-25
06:27:45		 46.0802 13.7322 7 2023-12-25
06:47:21		 Sala Sismica INGV-Roma 124258901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-25 06:27:45 ± 0.16
Latitude 46.0802 ± 0.0081
Longitude 13.7322 ± 0.0117
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124258901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 894
Semi-minor axis of confidence ellipse (meter) 832
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 890.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.66285
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.5
Num. used stations 18
Type of magnitude ML
Reference to an origin 124258901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-25 06:47:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PP3.EHZ. 2023-12-25T06:29:08.34 3.0 undecidable manual Sg 1.93 0
IV.CSP1.EHZ. 2023-12-25T06:29:03.76 3.0 undecidable manual Sn -9.96 0
ZO.PDN2.EHZ. 2023-12-25T06:28:47.80 3.0 undecidable manual Sn -0.57 0
IV.SNTG.HHZ. 2023-12-25T06:28:28.69 3.0 positive manual Pn -4.51 0
ST.CARE.HNZ. 2023-12-25T06:28:27.97 3.0 undecidable manual Pg 6.74 0
ST.PANI.EHZ. 2023-12-25T06:28:14.69 1.0 positive manual P 270 184.5708 38 -0.72 13
ST.ZIAN.EHZ. 2023-12-25T06:28:13.68 0.1 undecidable manual P 278 168.0096 50 0.66 60
OX.CLUD.HHZ. 2023-12-25T06:28:09.73 1.0 undecidable manual S 303 77.4669 50 0.54 20
OX.VARN.HHZ. 2023-12-25T06:28:06.56 0.1 undecidable manual P 266 125.6742 50 0.07 80
SL.LJU.BHE. 2023-12-25T06:28:05.29 0.3 undecidable manual S 93 61.3941 50 0.4 63
OX.CAE.HHZ. 2023-12-25T06:28:03.21 0.1 undecidable manual P 266 99.9222 50 0.68 72
OX.ACOM.HHZ. 2023-12-25T06:28:03.12 0.1 undecidable manual S 342 54.501 50 0.06 92
NI.POLC.HHZ. 2023-12-25T06:28:02.17 0.1 undecidable manual P 267 95.0382 50 0.4 79
OX.MLN.HHZ. 2023-12-25T06:28:01.05 0.1 undecidable manual P 276 86.247 50 0.64 75
RF.GEPF.HHZ. 2023-12-25T06:28:01.61 0.6 undecidable manual S 296 50.4162 50 -0.37 43
IV.PTCC.HHZ. 2023-12-25T06:28:00.93 0.3 undecidable manual S 322 46.5201 50 0.02 71
NI.VINO.HHZ. 2023-12-25T06:27:59.04 0.6 undecidable manual S 299 40.0266 50 -0.15 46
OX.CLUD.HHZ. 2023-12-25T06:27:58.74 0.1 undecidable manual P 303 77.4669 50 -0.32 83
SL.LJU.BHE. 2023-12-25T06:27:56.53 0.1 undecidable manual P 93 61.3941 50 -0.06 91
IV.PTCC.HHZ. 2023-12-25T06:27:54.13 0.3 undecidable manual P 322 46.5201 50 -0.16 69
RF.GEPF.HHZ. 2023-12-25T06:27:54.08 0.3 undecidable manual P 296 50.4162 50 -0.82 56
OX.ACOM.HHZ. 2023-12-25T06:27:54.66 0.1 undecidable manual P 342 54.501 50 -0.87 72
NI.VINO.HHZ. 2023-12-25T06:27:52.53 0.6 undecidable manual P 299 40.0266 50 -0.76 39
OX.SABO.HHZ. 2023-12-25T06:27:50.20 0.1 undecidable manual S 216 12.7761 120 -0.17 97
OX.DRE.HHZ. 2023-12-25T06:27:50.81 0.3 undecidable manual S 327 12.2766 121 0.59 65
OX.DRE.HHZ. 2023-12-25T06:27:48.13 0.1 undecidable manual P 327 12.2766 121 0.01 100
OX.SABO.HHZ. 2023-12-25T06:27:47.94 0.1 negative manual P 216 12.7761 120 -0.26 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HHN. ML:2.1 0.001465 0.56 AML other m 2023-12-25T06:27:50.07
OX.SABO.HNN. ML:2.7 0.005705 0.86 AML other m 2023-12-25T06:27:50.07
OX.SABO.HHE. ML:2.2 0.00198 0.96 AML other m 2023-12-25T06:27:50.32
OX.SABO.HNE. ML:2.8 0.00779 0.94 AML other m 2023-12-25T06:27:50.33
NI.VINO.HHN. ML:1.4 0.00007905000000000001 0.14 AML other m 2023-12-25T06:27:58.02
NI.VINO.HHE. ML:1.4 0.0000823 0.74 AML other m 2023-12-25T06:27:58.05
IV.PTCC.HHN. ML:1.1 0.0000373 0.86 AML other m 2023-12-25T06:28:01.54
IV.PTCC.HHE. ML:1.2 0.000047350000000000006 0.82 AML other m 2023-12-25T06:28:01.26
RF.GEPF.HHE. ML:1.3 0.000055900000000000004 0.78 AML other m 2023-12-25T06:28:03.51
RF.GEPF.HHN. ML:1.3 0.0000499 0.52 AML other m 2023-12-25T06:28:04.58
OX.MLN.HHN. ML:1.3 0.000024425 0.54 AML other m 2023-12-25T06:28:16.57
NI.POLC.HHE. ML:1.8 0.00007209999999999999 0.46 AML other m 2023-12-25T06:28:18.23
NI.POLC.HHN. ML:1.9 0.0000854 0.32 AML other m 2023-12-25T06:28:18.94
OX.MLN.HHE. ML:1.3 0.00002675 1.46 AML other m 2023-12-25T06:28:20.95
OX.VARN.HHN. ML:2.0 0.00006945000000000001 1.18 AML other m 2023-12-25T06:28:23.77
OX.VARN.HHE. ML:2.2 0.0001012 0.22 AML other m 2023-12-25T06:28:24.46
ZO.PDN2.EHN. ML:3.0 0.0002055 0.06 AML other m 2023-12-25T06:28:47.88
ZO.PDN2.EHE. ML:3.0 0.00020600000000000002 1.48 AML other m 2023-12-25T06:28:48.17
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