Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 19-04-2023 and time 17:08:49 (UTC) in region 1 km E Vita (TP)

A magnitude ML 1.6 earthquake occured in region: 1 km E Vita (TP), on

  • 19-04-2023 17:08:49 (UTC)
  • 19-04-2023 19:08:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8710, 12.8210 at 10 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.

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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
Vita TP 1 2056 2056
Salemi TP 6 10794 12850
Calatafimi-Segesta TP 6 6712 19562
Gibellina TP 8 4115 23677
Santa Ninfa TP 12 5043 28720
Partanna TP 18 10607 39327
Alcamo TP 18 45307 84634
Castellammare del Golfo TP 18 15394 100028
Buseto Palizzolo TP 19 2957 102985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SE of Trapani (68759 inhabitants)
32 Km NE of Mazara del Vallo (51718 inhabitants)
35 Km E of Marsala (83194 inhabitants)
55 Km SW of Palermo (674435 inhabitants)
65 Km W of Bagheria (55387 inhabitants)
92 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
Bulletin
Rev1000 		ML 1.6 2023-04-19
17:08:49		 37.8712 12.8208 10 2024-03-01
17:18:12		 Bollettino Sismico Italiano INGV 118938641
Reviewed
Rev100 		ML 1.7 2023-04-19
17:08:49		 37.8673 12.8243 9 2023-04-19
17:19:13		 Sala Sismica INGV-Roma 116525911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-19 17:08:49 ± 0.09
Latitude 37.8712 ± 0.0054
Longitude 12.8208 ± 0.0046
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118938641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 538
Semi-minor axis of confidence ellipse (meter) 137
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.39300
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 118938641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-07-03 15:51:06

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 116525911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-19 17:19:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MARS.HHZ. 2023-04-19T17:08:59.20 0.6 undecidable manual S 240 25.9518 110 0.49 44
IV.CAVT.HHZ. 2023-04-19T17:08:57.09 0.6 undecidable manual S 195 22.0668 113 -0.36 45
IV.LEVAN.EHZ. 2023-04-19T17:08:57.98 0.6 undecidable manual P 288 43.623 50 0.53 42
IV.CORL.HHZ. 2023-04-19T17:08:57.05 0.1 undecidable manual P 86 42.3243 50 -0.19 91
IV.CRJA.HHZ. 2023-04-19T17:08:56.48 0.6 undecidable manual S 116 17.871 118 0.36 46
IV.MBFT.HHZ. 2023-04-19T17:08:55.00 0.6 undecidable manual S 54 14.2746 124 -0.06 49
IV.ERC.EHN. 2023-04-19T17:08:54.63 0.3 undecidable manual P 312 27.5502 109 -0.31 68
IV.MFNL.HHZ. 2023-04-19T17:08:54.63 0.6 undecidable manual S 135 12.5763 127 0.05 49
IV.MARS.HHZ. 2023-04-19T17:08:54.63 0.1 positive manual P 240 25.9518 110 -0.02 97
IV.CRJA.HHZ. 2023-04-19T17:08:53.19 0.1 negative manual P 116 17.871 118 0.04 98
IV.CAVT.HHZ. 2023-04-19T17:08:53.65 0.6 negative manual P 195 22.0668 113 -0.27 46
IV.MTGR.HHZ. 2023-04-19T17:08:52.88 0.6 undecidable manual S 295 5.8941 148 -0.12 49
IV.MFNL.HHZ. 2023-04-19T17:08:52.24 0.1 negative manual P 135 12.5763 127 -0.03 99
IV.MBFT.HHZ. 2023-04-19T17:08:52.67 0.1 positive manual P 54 14.2746 124 0.13 97
IV.MTGR.HHZ. 2023-04-19T17:08:51.39 0.1 negative manual P 295 5.8941 148 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTGR.HHE. ML:1.4 0.00037495715000000003 0.1664 AML other m 2023-04-19T17:08:52.94
IV.MTGR.HHN. ML:1.6 0.0006301672999999999 0.1536 AML other m 2023-04-19T17:08:53.59
IV.MFNL.HHN. ML:1.7 0.0005934406 0.0768 AML other m 2023-04-19T17:08:54.98
IV.MBFT.HHN. ML:1.3 0.00021349999999999999 0.54 AML other m 2023-04-19T17:08:55.22
IV.MFNL.HHE. ML:1.7 0.00057613605 0.2944 AML other m 2023-04-19T17:08:55.12
IV.MBFT.HHE. ML:1.4 0.00027949999999999996 0.5 AML other m 2023-04-19T17:08:55.35
IV.CRJA.HNN. ML:2.0 0.000752 0.3 AML other m 2023-04-19T17:08:56.71
IV.CRJA.HHN. ML:1.9 0.0007384999999999999 0.32 AML other m 2023-04-19T17:08:56.87
IV.CAVT.HHE. ML:1.9 0.0004885 0.42 AML other m 2023-04-19T17:08:57.50
IV.CAVT.HNE. ML:1.6 0.0002535 0.44 AML other m 2023-04-19T17:08:57.51
IV.CAVT.HHN. ML:1.7 0.00031814589999999997 0.4224 AML other m 2023-04-19T17:09:01.55
IV.CAVT.HNN. ML:1.4 0.00015742085 0.512 AML other m 2023-04-19T17:09:05.79
IV.CRJA.HNE. ML:1.7 0.00040369265 0.2816 AML other m 2023-04-19T17:08:59.96
IV.CRJA.HHE. ML:1.8 0.00049 0.52 AML other m 2023-04-19T17:08:59.96
IV.MARS.HHE. ML:1.8 0.00032206944999999996 0.2432 AML other m 2023-04-19T17:08:59.43
IV.MARS.HNN. ML:1.4 0.00015154555 0.3584 AML other m 2023-04-19T17:09:07.49
IV.MARS.HHN. ML:1.5 0.00016517555000000001 0.4992 AML other m 2023-04-19T17:09:05.00
IV.MARS.HNE. ML:1.8 0.0003214958 0.2432 AML other m 2023-04-19T17:08:59.42
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