Earthquake with magnitude of ML 1.6 on date 24-11-2020 and time 11:18:37 (Italy) in region 9 km NE Gibellina (TP)

A magnitude ML 1.6 earthquake occured in region: 9 km NE Gibellina (TP), on

  • 24-11-2020 10:18:37 (UTC)
  • 24-11-2020 11:18:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8660, 12.9380 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gibellina TP 9 4115 4115
Calatafimi-Segesta TP 9 6712 10827
Vita TP 11 2056 12883
Santa Ninfa TP 11 5043 17926
Salemi TP 13 10794 28720
Alcamo TP 13 45307 74027
Salaparuta TP 13 1696 75723
Poggioreale TP 14 1494 77217
Camporeale PA 14 3373 80590
Partanna TP 17 10607 91197
Montevago AG 19 3006 94203
Castellammare del Golfo TP 19 15394 109597
Roccamena PA 19 1505 111102

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Mazara del Vallo (51718 inhabitants)
41 Km E of Trapani (68759 inhabitants)
45 Km E of Marsala (83194 inhabitants)
47 Km SW of Palermo (674435 inhabitants)
56 Km W of Bagheria (55387 inhabitants)
84 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 2020-11-24
10:18:37
37.8658 12.9382 11 2021-02-26
14:56:20
Bollettino Sismico Italiano INGV 87380531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-24 10:18:37 ± 0.24
Latitude 37.8658 ± 0.0108
Longitude 12.9382 ± 0.0103
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87380531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1051
Semi-minor axis of confidence ellipse (meter) 776
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00719
Epicentral distance of station farthest from the epicenter (degree) 0.17447
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:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 87380531
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-22 14:31:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
X3.T1582.EHN. 2020-11-24T10:18:44.43 0.6 undecidable manual S 227 19.3695 93 -0.26 48
X3.T1574.HHZ. 2020-11-24T10:18:43.03 0.3 undecidable manual S 255 10.4784 120 0.63 65
IV.MTGR.HHZ. 2020-11-24T10:18:43.46 0.6 undecidable manual S 281 15.9729 96 -0.33 47
IV.CRJA.HHZ. 2020-11-24T10:18:42.24 0.3 undecidable manual S 141 9.1797 126 0.13 76
IV.MBFT.HHE. 2020-11-24T10:18:42.29 0.6 undecidable manual S 9 8.9799 127 0.22 50
IV.MFNL.HHZ. 2020-11-24T10:18:42.72 0.6 undecidable manual S 189 8.4804 130 0.76 42
X3.T1582.EHN. 2020-11-24T10:18:41.55 0.3 undecidable manual P 227 19.3695 93 0.08 75
X3.T1573.HHN. 2020-11-24T10:18:40.45 0.3 undecidable manual S 245 0.7992 175 -0.56 68
IV.MBFT.HHE. 2020-11-24T10:18:40.22 0.3 undecidable manual P 9 8.9799 127 0.26 74
X3.T1574.HHZ. 2020-11-24T10:18:40.42 0.1 undecidable manual P 255 10.4784 120 0.27 97
IV.MTGR.HHZ. 2020-11-24T10:18:40.75 0.3 undecidable manual P 281 15.9729 96 -0.2 73
IV.MFNL.HHZ. 2020-11-24T10:18:39.44 0.3 undecidable manual P 189 8.4804 130 -0.45 69
IV.CRJA.HHZ. 2020-11-24T10:18:39.93 0.1 undecidable manual P 141 9.1797 126 -0.05 100
X3.T1573.HHN. 2020-11-24T10:18:39.04 0.1 undecidable manual P 245 0.7992 175 -0.3 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
X3.T1574.HHN. ML:1.6 0.000437 0.24 AML other m 2020-11-24T10:18:43.25
X3.T1574.HNE. ML:1.5 0.000375 0.88 AML other m 2020-11-24T10:18:43.22
X3.T1574.HHE. ML:1.4 0.00032700000000000003 0.76 AML other m 2020-11-24T10:18:44.23
IV.CRJA.HHE. ML:1.5 0.00038 1.06 AML other m 2020-11-24T10:18:44.09
IV.CRJA.HHN. ML:1.6 0.0005420000000000001 0.42 AML other m 2020-11-24T10:18:44.94
X3.T1574.HNN. ML:1.6 0.000492 1.5 AML other m 2020-11-24T10:18:44.91
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