Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 18-09-2020 and time 12:20:11 (Italy) in region 2 km W Castel di Lucio (ME)

A magnitude ML 1.7 earthquake occured in region: 2 km W Castel di Lucio (ME), on

  • 18-09-2020 10:20:11 (UTC)
  • 18-09-2020 12:20:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8940, 14.2920 at 18 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
Castel di Lucio ME 2 1294 1294
Mistretta ME 8 4791 6085
Pettineo ME 8 1350 7435
San Mauro Castelverde PA 9 1701 9136
Motta d'Affermo ME 10 739 9875
Reitano ME 10 806 10681
Tusa ME 11 2925 13606
Geraci Siculo PA 13 1945 15551
Gangi PA 13 6811 22362
Santo Stefano di Camastra ME 15 4694 27056
Sperlinga EN 15 805 27861
Pollina PA 17 2974 30835
Capizzi ME 17 3176 34011
Castelbuono PA 18 8943 42954
Nicosia EN 19 13899 56853
Petralia Soprana PA 19 3360 60213
Caronia ME 20 3364 63577
Petralia Sottana PA 20 2821 66398

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NE of Caltanissetta (63360 inhabitants)
72 Km E of Bagheria (55387 inhabitants)
82 Km NW of Catania (314555 inhabitants)
83 Km W of Acireale (52622 inhabitants)
85 Km E of Palermo (674435 inhabitants)
90 Km NE of Agrigento (59770 inhabitants)
92 Km N of Gela (75827 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 1.7 2020-09-18
10:20:11		 37.8938 14.2922 18 2021-02-26
14:56:20		 Bollettino Sismico Italiano INGV 87375931
Reviewed
Rev100 		ML 1.7 2020-09-18
10:20:11		 37.9092 14.2963 19 2020-09-18
10:28:42		 Sala Sismica INGV-Roma 83003151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 10:20:11 ± 0.23
Latitude 37.8938 ± 0.0117
Longitude 14.2922 ± 0.0091
Depth (km) 18 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87375931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1168
Semi-minor axis of confidence ellipse (meter) 633
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 170
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.15199
Epicentral distance of station farthest from the epicenter (degree) 0.67359
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 87375931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-22 11:41:42

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 83003151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 10:28:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2020-09-18T10:20:28.25 0.6 undecidable manual S 72 53.502 100 -0.1 64
IV.RAFF.HHZ. 2020-09-18T10:20:25.03 0.6 undecidable manual P 175 74.7696 96 0.58 55
IV.MSFR.HHZ. 2020-09-18T10:20:22.62 0.6 undecidable manual S 59 30.4473 110 0.24 64
IV.GIB.HHE. 2020-09-18T10:20:21.14 0.6 undecidable manual S 295 25.6521 115 -0.04 68
IV.SCIAR.HHZ. 2020-09-18T10:20:20.57 0.3 undecidable manual P 276 47.8188 101 0.23 95
IV.PLLN.EHZ. 2020-09-18T10:20:20.07 1.0 undecidable manual S 310 17.0718 128 0.85 27
IV.MUCR.HHZ. 2020-09-18T10:20:20.68 0.3 undecidable manual P 72 53.502 100 -0.53 87
IV.PETRA.HHZ. 2020-09-18T10:20:19.11 0.6 undecidable manual S 247 16.872 129 -0.09 69
IV.CSLB.HHZ. 2020-09-18T10:20:19.38 1.0 undecidable manual S 283 21.0678 121 -0.73 28
IV.RESU.HHE. 2020-09-18T10:20:19.04 1.0 undecidable manual P 217 34.3434 107 0.71 28
IV.CAGR.HHE. 2020-09-18T10:20:18.72 1.0 undecidable manual P 149 35.2425 107 0.26 32
IV.GIB.HHE. 2020-09-18T10:20:17.32 1.0 undecidable manual P 295 25.6521 115 0.25 33
IV.MSFR.HHZ. 2020-09-18T10:20:17.66 0.3 undecidable manual P 59 30.4473 110 -0.1 100
IV.PLLN.EHZ. 2020-09-18T10:20:16.48 0.3 undecidable manual P 310 17.0718 128 0.54 93
IV.PETRA.HHZ. 2020-09-18T10:20:15.41 0.3 undecidable manual P 247 16.872 129 -0.52 93
IV.CSLB.HHZ. 2020-09-18T10:20:15.98 0.3 undecidable manual P 283 21.0678 121 -0.47 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.0 0.0007297214999999999 0.2816 AML other m 2020-09-18T10:20:21.27
IV.PLLN.EHE. ML:1.9 0.00051148985 0.3584 AML other m 2020-09-18T10:20:21.36
IV.CSLB.HHE. ML:1.2 0.000084236125 0.3008 AML other m 2020-09-18T10:20:21.66
IV.PETRA.HHN. ML:2.0 0.0006127621 0.3456 AML other m 2020-09-18T10:20:22.52
IV.MSFR.HHE. ML:1.4 0.00010211124 0.3392 AML other m 2020-09-18T10:20:24.18
IV.PLLN.EHN. ML:1.8 0.00045289250000000005 0.3392 AML other m 2020-09-18T10:20:24.61
IV.MSFR.HHN. ML:1.4 0.00010093913 0.4352 AML other m 2020-09-18T10:20:24.62
IV.CSLB.HHN. ML:1.3 0.00011002103000000001 0.3968 AML other m 2020-09-18T10:20:25.22
IV.MUCR.HHN. ML:1.7 0.0001083396 0.3584 AML other m 2020-09-18T10:20:30.47
IV.SCIAR.HHE. ML:1.8 0.00018065625000000002 0.4224 AML other m 2020-09-18T10:20:31.18
IV.SCIAR.HNE. ML:1.9 0.00022058085 1.4752 AML other m 2020-09-18T10:20:31.92
IV.SCIAR.HNN. ML:1.8 0.0001781151 0.5504 AML other m 2020-09-18T10:20:33.08
IV.SCIAR.HHN. ML:1.7 0.00013995594999999998 0.5184 AML other m 2020-09-18T10:20:33.09
IV.MUCR.HHE. ML:1.6 0.00009881043500000001 1.5968 AML other m 2020-09-18T10:20:33.00
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