Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 03-10-2023 and time 18:43:46 (UTC) in region 3 km W Montevago (AG)

A magnitude ML 0.7 earthquake occured in region: 3 km W Montevago (AG), on

  • 03-10-2023 18:43:46 (UTC)
  • 03-10-2023 20:43:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7160, 12.9610 at 10 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
Montevago AG 3 3006 3006
Santa Margherita di Belice AG 6 6363 9369
Salaparuta TP 6 1696 11065
Partanna TP 6 10607 21672
Poggioreale TP 8 1494 23166
Santa Ninfa TP 10 5043 28209
Menfi AG 13 12592 40801
Gibellina TP 13 4115 44916
Sambuca di Sicilia AG 15 5877 50793
Castelvetrano TP 15 31806 82599
Salemi TP 18 10794 93393
Contessa Entellina PA 20 1766 95159

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Mazara del Vallo (51718 inhabitants)
47 Km E of Marsala (83194 inhabitants)
52 Km SE of Trapani (68759 inhabitants)
57 Km SW of Palermo (674435 inhabitants)
63 Km SW of Bagheria (55387 inhabitants)
71 Km NW of Agrigento (59770 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 0.7 2023-10-03
18:43:46		 37.7162 12.9607 10 2023-10-03
19:21:15		 Sala Sismica INGV-Roma 121722081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-03 18:43:46 ± 0.17
Latitude 37.7162 ± 0.0081
Longitude 12.9607 ± 0.0125
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121722081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 966
Semi-minor axis of confidence ellipse (meter) 930
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 297
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.22843
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 121722081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-03 19:21:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCIAC.HHZ. 2023-10-03T18:43:55.96 0.3 undecidable manual S 151 25.3524 50 0.19 71
IV.CAVT.HHZ. 2023-10-03T18:43:54.21 0.3 undecidable manual S 257 18.4704 119 0.54 66
IV.SCIAC.HHZ. 2023-10-03T18:43:51.54 0.1 undecidable manual P 151 25.3524 50 -0.25 93
IV.CRJA.HHZ. 2023-10-03T18:43:51.78 0.3 undecidable manual S 22 10.1787 135 0.42 69
IV.MMGO.HHN. 2023-10-03T18:43:50.38 0.1 undecidable manual S 167 6.1938 149 -0.11 99
IV.CAVT.HHZ. 2023-10-03T18:43:50.18 0.3 undecidable manual P 257 18.4704 119 -0.39 68
IV.MFNL.HHZ. 2023-10-03T18:43:50.59 0.1 undecidable manual S 338 8.88 139 -0.46 91
IV.CRJA.HHZ. 2023-10-03T18:43:49.33 0.1 undecidable manual P 22 10.1787 135 0.09 99
IV.MFNL.HHZ. 2023-10-03T18:43:49.17 0.1 undecidable manual P 338 8.88 139 0.11 99
IV.MMGO.HHN. 2023-10-03T18:43:48.80 0.1 undecidable manual P 167 6.1938 149 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMGO.HHN. ML:1.1 0.00019042305000000002 0.1664 AML other m 2023-10-03T18:43:50.47
IV.MMGO.HNN. ML:1.1 0.0001918829 0.1536 AML other m 2023-10-03T18:43:50.48
IV.MMGO.HNE. ML:1.2 0.00025600415 0.0768 AML other m 2023-10-03T18:43:50.54
IV.MMGO.HHE. ML:1.2 0.00025190035 0.0768 AML other m 2023-10-03T18:43:50.54
IV.CRJA.HHN. ML:0.7 0.00006695400500000002 0.256 AML other m 2023-10-03T18:43:52.03
IV.CRJA.HNN. ML:0.8 0.000079825345 0.2688 AML other m 2023-10-03T18:43:52.03
IV.CRJA.HHE. ML:0.6 0.000056126744999999996 0.2176 AML other m 2023-10-03T18:43:52.18
IV.CRJA.HNE. ML:1.0 0.00014229966 0.32 AML other m 2023-10-03T18:43:52.08
IV.CAVT.HNE. ML:0.4 0.000021707388000000002 0.7296 AML other m 2023-10-03T18:43:54.47
IV.CAVT.HNN. ML:0.3 0.000015916458 0.3456 AML other m 2023-10-03T18:43:54.66
IV.CAVT.HHE. ML:0.8 0.00004394978 1.4592 AML other m 2023-10-03T18:43:54.47
IV.CAVT.HHN. ML:0.5 0.000025062585 1.3184 AML other m 2023-10-03T18:43:54.61
IV.SCIAC.HHE. ML:0.4 0.0000167268675 0.128 AML other m 2023-10-03T18:43:56.06
IV.SCIAC.HHN. ML:0.4 0.00001391939 0.6016 AML other m 2023-10-03T18:43:55.94
IV.SCIAC.HNE. ML:0.5 0.000018546831999999998 0.128 AML other m 2023-10-03T18:43:56.06
IV.SCIAC.HNN. ML:0.6 0.000025578903 1.2288 AML other m 2023-10-03T18:43:56.56
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