Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 31-01-2024 and time 12:34:40 (UTC) in region 5 km SW Montevago (AG)

A magnitude ML 0.8 earthquake occured in region: 5 km SW Montevago (AG), on

  • 31-01-2024 12:34:40 (UTC)
  • 31-01-2024 13:34:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6670, 12.9640 at 3 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 5 3006 3006
Santa Margherita di Belice AG 6 6363 9369
Menfi AG 8 12592 21961
Partanna TP 9 10607 32568
Salaparuta TP 11 1696 34264
Poggioreale TP 12 1494 35758
Sambuca di Sicilia AG 13 5877 41635
Santa Ninfa TP 14 5043 46678
Castelvetrano TP 15 31806 78484
Gibellina TP 18 4115 82599
Campobello di Mazara TP 20 11956 94555

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Mazara del Vallo (51718 inhabitants)
49 Km E of Marsala (83194 inhabitants)
56 Km SE of Trapani (68759 inhabitants)
61 Km SW of Palermo (674435 inhabitants)
66 Km SW of Bagheria (55387 inhabitants)
68 Km NW of Agrigento (59770 inhabitants)
99 Km W of Caltanissetta (63360 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 0.8 2024-01-31
12:34:40		 37.6673 12.9642 3 2024-01-31
12:42:52		 Sala Sismica INGV-Roma 124965481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-31 12:34:40 ± 0.26
Latitude 37.6673 ± 0.0126
Longitude 12.9642 ± 0.0125
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124965481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1217
Semi-minor axis of confidence ellipse (meter) 1040
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 1220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.01169
Epicentral distance of station farthest from the epicenter (degree) 0.18616
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:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 124965481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-31 12:42:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAVT.HHZ. 2024-01-31T12:34:47.50 0.6 undecidable manual S 274 18.3705 98 0.49 45
IV.SCIAC.HHZ. 2024-01-31T12:34:44.94 0.6 undecidable manual P 144 20.6682 97 0.2 48
IV.CAVT.HHZ. 2024-01-31T12:34:43.84 0.3 undecidable manual P 274 18.3705 98 -0.45 68
IV.CRJA.HHZ. 2024-01-31T12:34:43.80 0.1 undecidable manual P 13 15.2736 100 0.12 98
IV.MFNL.HHZ. 2024-01-31T12:34:43.39 0.3 undecidable manual P 345 14.1747 101 -0.07 74
IV.MMGO.HHZ. 2024-01-31T12:34:41.66 0.3 undecidable manual S 118 1.2987 155 0.08 76
IV.MMGO.HHZ. 2024-01-31T12:34:41.01 0.1 positive manual P 118 1.2987 155 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MFNL.HHN. ML:0.6 0.000044715665 0.2624 AML other m 2024-01-31T12:34:50.76
IV.CRJA.HHE. ML:1.0 0.0001235 1.22 AML other m 2024-01-31T12:34:50.78
IV.MFNL.HHE. ML:0.6 0.00005586789 0.3008 AML other m 2024-01-31T12:34:51.02
IV.CRJA.HHN. ML:1.0 0.000110832445 0.7168 AML other m 2024-01-31T12:34:52.58
IV.MMGO.HHE. ML:0.0 0.00169175 0.1792 AML other m 2024-01-31T12:34:42.27
IV.MMGO.HHN. ML:0.0 0.0015371995 0.2176 AML other m 2024-01-31T12:34:42.28
IV.MMGO.HNE. ML:0.0 0.0017006130000000001 0.1792 AML other m 2024-01-31T12:34:42.27
IV.MMGO.HNN. ML:0.0 0.00150888 0.2304 AML other m 2024-01-31T12:34:42.28
IV.CRJA.HNE. ML:1.1 0.0001339156 0.7936 AML other m 2024-01-31T12:34:50.78
IV.CRJA.HNN. ML:1.1 0.00013421290999999998 0.672 AML other m 2024-01-31T12:34:52.58
IV.CAVT.HNE. ML:0.8 0.000055409744999999995 0.1728 AML other m 2024-01-31T12:34:48.51
IV.CAVT.HNN. ML:0.6 0.000037518009999999996 0.192 AML other m 2024-01-31T12:34:47.97
IV.CAVT.HHE. ML:1.0 0.000101268365 0.1856 AML other m 2024-01-31T12:34:48.51
IV.CAVT.HHN. ML:0.9 0.000077732735 0.4352 AML other m 2024-01-31T12:34:47.97
IV.SCIAC.HHE. ML:0.6 0.00003501113 0.2944 AML other m 2024-01-31T12:34:53.16
IV.SCIAC.HHN. ML:0.6 0.000033701040000000004 0.1792 AML other m 2024-01-31T12:34:49.42
IV.SCIAC.HNE. ML:0.5 0.000027021951499999997 0.4416 AML other m 2024-01-31T12:34:48.62
IV.SCIAC.HNN. ML:0.7 0.000041142035 0.7424 AML other m 2024-01-31T12:34:48.71
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