Earthquake with magnitude of ML 1.3 on date 02-04-2020 and time 13:27:08 (Italy) in region 3 km SE Sambuca di Sicilia (AG)

A magnitude ML 1.3 earthquake occured in region: 3 km SE Sambuca di Sicilia (AG), on

  • 02-04-2020 11:27:08 (UTC)
  • 02-04-2020 13:27:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.63, 13.14 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sambuca di Sicilia AG 3 5877 5877
Caltabellotta AG 9 3681 9558
Giuliana PA 10 1952 11510
Contessa Entellina PA 12 1766 13276
Santa Margherita di Belice AG 12 6363 19639
Chiusa Sclafani PA 13 2838 22477
Burgio AG 14 2672 25149
Bisacquino PA 14 4599 29748
Sciacca AG 14 40928 70676
Villafranca Sicula AG 14 1410 72086
Montevago AG 16 3006 75092
Menfi AG 16 12592 87684
Lucca Sicula AG 16 1805 89489
Poggioreale TP 18 1494 90983
Calamonaci AG 18 1339 92322
Ribera AG 18 19232 111554
Campofiorito PA 18 1302 112856
Salaparuta TP 19 1696 114552

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Mazara del Vallo (51718 inhabitants)
53 Km NW of Agrigento (59770 inhabitants)
58 Km SW of Palermo (674435 inhabitants)
60 Km SW of Bagheria (55387 inhabitants)
65 Km E of Marsala (83194 inhabitants)
70 Km SE of Trapani (68759 inhabitants)
83 Km W of Caltanissetta (63360 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.3 2020-04-02
11:27:08
37.63 13.14 11 2020-04-02
11:33:01
Sala Sismica INGV-Roma 77788341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-02 11:27:08 ± 0.1
Latitude 37.63 ± 0.01
Longitude 13.14 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77788341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 890
Semi-minor axis of confidence ellipse (meter) 547
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.34984
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 77788341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-02 11:33:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MBFT.HHE. 2020-04-02T11:27:21.11 0.6 undecidable manual S 335 0.3498 50 0.18 47
IV.CRJA.HHZ. 2020-04-02T11:27:17.32 0.6 undecidable manual S 328 0.2032 50 0.73 41
IV.MBFT.HHE. 2020-04-02T11:27:15.36 0.3 undecidable manual P 335 0.3498 50 -0.12 71
IV.CORL.HHZ. 2020-04-02T11:27:14.61 0.3 undecidable manual P 26 0.2959 50 0.06 73
IV.SCIAC.HHZ. 2020-04-02T11:27:14.09 0.6 undecidable manual S 195 0.116 130 0.28 48
IV.MMGO.HHE. 2020-04-02T11:27:14.10 0.6 undecidable manual S 285 0.1322 126 -0.22 49
IV.MFNL.HHE. 2020-04-02T11:27:13.51 0.3 undecidable manual P 314 0.2356 50 -0.02 74
IV.CRJA.HHZ. 2020-04-02T11:27:12.81 0.1 undecidable manual P 328 0.2032 50 -0.16 97
MN.CLTB.HHZ. 2020-04-02T11:27:12.81 0.6 undecidable manual S 130 0.0791 140 0 51
IV.SCIAC.HHZ. 2020-04-02T11:27:11.47 0.1 positive manual P 195 0.116 130 0.1 100
IV.MMGO.HHE. 2020-04-02T11:27:11.48 0.3 undecidable manual P 285 0.1322 126 -0.18 74
MN.CLTB.HHZ. 2020-04-02T11:27:10.67 0.1 negative manual P 130 0.0791 140 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.CLTB.HHE. ML:2.1 0.001681421 0.3776 AML other m 2020-04-02T11:27:14.53
MN.CLTB.HHN. ML:2.4 0.0032120015 0.3392 AML other m 2020-04-02T11:27:13.80
IV.SCIAC.HHE. ML:1.5 0.00035073385 0.1792 AML other m 2020-04-02T11:27:16.36
IV.SCIAC.HHN. ML:1.6 0.00042240565 0.0768 AML other m 2020-04-02T11:27:14.59
IV.CRJA.HHE. ML:1 6.630028E-5 0.1408 AML other m 2020-04-02T11:27:17.61
IV.CRJA.HHN. ML:0.9 5.7287685E-5 0.1024 AML other m 2020-04-02T11:27:17.61
IV.CORL.HHE. ML:0.9 3.586455E-5 0.2176 AML other m 2020-04-02T11:27:22.26
IV.CORL.HHN. ML:1.1 5.382744E-5 0 AML other m 2020-04-02T11:27:22.10
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download