Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 18-07-2019 and time 21:03:27 (Italy) in region 5 km E Menfi (AG)

A magnitude ML 1.4 earthquake occured in region: 5 km E Menfi (AG), on

  • 18-07-2019 19:03:27 (UTC)
  • 18-07-2019 21:03:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.5920, 13.0210 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
Menfi AG 5 12592 12592
Sambuca di Sicilia AG 10 5877 18469
Sciacca AG 11 40928 59397
Santa Margherita di Belice AG 11 6363 65760
Montevago AG 13 3006 68766
Caltabellotta AG 17 3681 72447
Partanna TP 19 10607 83054
Salaparuta TP 19 1696 84750
Poggioreale TP 19 1494 86244

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Mazara del Vallo (51718 inhabitants)
57 Km E of Marsala (83194 inhabitants)
59 Km NW of Agrigento (59770 inhabitants)
65 Km SE of Trapani (68759 inhabitants)
66 Km SW of Palermo (674435 inhabitants)
69 Km SW of Bagheria (55387 inhabitants)
93 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
Bulletin
Rev1000 		ML 1.4 2019-07-18
19:03:27		 37.5917 13.0207 10 2019-11-13
14:31:08		 Bollettino Sismico Italiano INGV 73812951
Reviewed
Rev100 		ML 1.4 2019-07-18
19:03:27		 37.6012 13.0433 9 2019-07-18
19:23:13		 Sala Sismica INGV-Roma 70691401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-18 19:03:27 ± 0.64
Latitude 37.5917 ± 0.0243
Longitude 13.0207 ± 0.0284
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73812951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3082
Semi-minor axis of confidence ellipse (meter) 1929
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 321
Circular confidence region, given by single value of horizontal uncertainty (meter) 3080.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 297
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) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 73812951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-13 09:58:38

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 70691401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-18 19:23:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MBFT.HHZ. 2019-07-18T19:03:40.80 0.6 undecidable manual S 351 39.7269 50 -0.32 43
IV.CRJA.HHZ. 2019-07-18T19:03:37.54 0.3 undecidable manual S 356 23.3544 113 0.89 58
IV.CAVT.HHZ. 2019-07-18T19:03:37.55 0.3 undecidable manual S 293 25.2525 50 0.32 66
IV.MFNL.HHZ. 2019-07-18T19:03:36.20 0.3 undecidable manual S 339 23.754 113 -0.56 68
IV.MBFT.HHZ. 2019-07-18T19:03:35.24 0.3 undecidable manual P 351 39.7269 50 -0.25 67
IV.MFNL.HHZ. 2019-07-18T19:03:33.27 0.3 undecidable manual P 339 23.754 113 0.29 71
IV.CRJA.HHZ. 2019-07-18T19:03:33.22 0.1 undecidable manual P 356 23.3544 113 0.3 95
IV.CAVT.HHZ. 2019-07-18T19:03:33.37 0.3 undecidable manual P 293 25.2525 50 0.12 72
IV.MMGO.HHE. 2019-07-18T19:03:31.43 0.6 undecidable manual S 334 8.6802 139 -1.02 41
IV.MMGO.HHE. 2019-07-18T19:03:30.25 0.1 undecidable manual P 334 8.6802 139 -0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRJA.HHN. ML:1.6 0.0002325 0.12 AML other m 2019-07-18T19:03:37.73
IV.CRJA.HHE. ML:1.6 0.0002515 0.54 AML other m 2019-07-18T19:03:37.45
IV.CAVT.HHN. ML:1.5 0.00016949999999999997 0.08 AML other m 2019-07-18T19:03:37.80
IV.MFNL.HHN. ML:1.2 0.000103 0.86 AML other m 2019-07-18T19:03:38.56
IV.CAVT.HHE. ML:1.5 0.0001825 0.62 AML other m 2019-07-18T19:03:38.72
IV.MFNL.HHE. ML:1.3 0.000126 0.6 AML other m 2019-07-18T19:03:39.14
IV.MBFT.HHE. ML:1.2 0.00005225 0.46 AML other m 2019-07-18T19:03:41.52
IV.MBFT.HHN. ML:1.2 0.00006145 1.64 AML other m 2019-07-18T19:03:42.95
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