Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 18-07-2019 and time 23:44:53 (Italy) in region 5 km E Menfi (AG)

A magnitude ML 1.3 earthquake occured in region: 5 km E Menfi (AG), on

  • 18-07-2019 21:44:53 (UTC)
  • 18-07-2019 23:44:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.5830, 13.0240 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Sciacca AG 10 40928 53520
Sambuca di Sicilia AG 11 5877 59397
Santa Margherita di Belice AG 12 6363 65760
Montevago AG 14 3006 68766
Caltabellotta AG 17 3681 72447
Partanna TP 19 10607 83054
Salaparuta TP 20 1696 84750
Poggioreale TP 20 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)
58 Km NW of Agrigento (59770 inhabitants)
66 Km SE of Trapani (68759 inhabitants)
66 Km SW of Palermo (674435 inhabitants)
70 Km SW of Bagheria (55387 inhabitants)
92 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 1.3 2019-07-18
21:44:53		 37.5832 13.0235 10 2019-11-13
14:31:08		 Bollettino Sismico Italiano INGV 73812981
Reviewed
Rev100 		ML 1.3 2019-07-18
21:44:53		 37.5822 13.0375 10 2019-07-18
21:53:31		 Sala Sismica INGV-Roma 70692931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-18 21:44:53 ± 0.78
Latitude 37.5832 ± 0.0315
Longitude 13.0235 ± 0.0306
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 73812981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3850
Semi-minor axis of confidence ellipse (meter) 2154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 3850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 298
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.36692
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:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 73812981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-13 10:06:39

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 70692931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-18 21:53:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MBFT.HHZ. 2019-07-18T21:45:06.83 0.3 undecidable manual S 351 40.7259 50 -0.29 69
IV.CRJA.HHZ. 2019-07-18T21:45:03.48 0.6 undecidable manual S 356 24.2535 113 0.75 40
IV.CAVT.HHZ. 2019-07-18T21:45:03.35 0.3 undecidable manual S 294 25.8519 50 0.21 74
IV.MBFT.HHZ. 2019-07-18T21:45:01.16 0.3 undecidable manual P 351 40.7259 50 -0.25 70
IV.CAVT.HHZ. 2019-07-18T21:44:59.33 0.3 undecidable manual P 294 25.8519 50 0.22 73
IV.MFNL.HHZ. 2019-07-18T21:44:59.37 0.3 undecidable manual P 339 24.6531 50 0.44 69
IV.CRJA.HHZ. 2019-07-18T21:44:59.18 0.1 undecidable manual P 356 24.2535 113 0.32 94
IV.MMGO.HHE. 2019-07-18T21:44:57.43 0.3 undecidable manual S 335 9.6792 136 -1.02 58
IV.MMGO.HHE. 2019-07-18T21:44:56.19 0.1 undecidable manual P 335 9.6792 136 -0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRJA.HHN. ML:1.5 0.00019258749999999999 0.2048 AML other m 2019-07-18T21:45:03.74
IV.CRJA.HHE. ML:1.5 0.00017563525 0.2048 AML other m 2019-07-18T21:45:03.69
IV.MBFT.HHE. ML:1.2 0.00005262639500000001 0.512 AML other m 2019-07-18T21:45:07.51
IV.MFNL.HHE. ML:1.2 0.00010634341 1.4752 AML other m 2019-07-18T21:45:07.15
IV.MBFT.HHN. ML:1.2 0.000049809290000000004 1.616 AML other m 2019-07-18T21:45:08.13
IV.MFNL.HHN. ML:1.1 0.00006809946999999999 0.256 AML other m 2019-07-18T21:45:09.68
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