Earthquake with magnitude of ML 1.7 on date 18-09-2020 and time 10:20:11 (UTC) in region 3 km NW Castel di Lucio (ME)

A magnitude ML 1.7 earthquake occured in region: 3 km NW 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) 37.91, 14.3 at 19 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
Castel di Lucio ME 3 1294 1294
Mistretta ME 6 4791 6085
Pettineo ME 7 1350 7435
Motta d'Affermo ME 8 739 8174
Reitano ME 8 806 8980
San Mauro Castelverde PA 9 1701 10681
Tusa ME 10 2925 13606
Santo Stefano di Camastra ME 13 4694 18300
Geraci Siculo PA 14 1945 20245
Gangi PA 15 6811 27056
Pollina PA 16 2974 30030
Sperlinga EN 17 805 30835
Capizzi ME 17 3176 34011
Caronia ME 18 3364 37375
Castelbuono PA 18 8943 46318
Nicosia EN 20 13899 60217

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NE of Caltanissetta (63360 inhabitants)
71 Km E of Bagheria (55387 inhabitants)
83 Km NW of Catania (314555 inhabitants)
83 Km W of Acireale (52622 inhabitants)
85 Km E of Palermo (674435 inhabitants)
91 Km NE of Agrigento (59770 inhabitants)
94 Km N of Gela (75827 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
Reviewed
Rev100
ML 1.7 2020-09-18
10:20:11
37.91 14.3 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 ± 0.14
Latitude 37.91 ± 0.01
Longitude 14.30 ± 0.01
Depth (km) 19 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83003151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 837
Semi-minor axis of confidence ellipse (meter) 514
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 840
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
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) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.14659
Epicentral distance of station farthest from the epicenter (degree) 0.68798
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

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 Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2020-09-18T10:20:28.20 1.0 undecidable manual S 73 0.4739 102 -0.12 32
IV.RAFF.HHZ. 2020-09-18T10:20:25.29 0.6 negative manual P 176 0.688 97 0.43 58
IV.MSFR.HHZ. 2020-09-18T10:20:22.43 0.6 undecidable manual S 62 0.2635 114 0.08 69
IV.GIB.HHE. 2020-09-18T10:20:21.14 0.6 undecidable manual S 291 0.2275 118 -0.25 66
IV.MUCR.HHZ. 2020-09-18T10:20:20.98 0.3 negative manual P 73 0.4739 102 -0.26 93
IV.CSLB.HHZ. 2020-09-18T10:20:20.49 1.0 undecidable manual S 279 0.1898 124 0.05 35
IV.SCIAR.HHZ. 2020-09-18T10:20:20.57 0.3 undecidable manual P 274 0.4326 103 0.02 100
IV.PLLN.EHZ. 2020-09-18T10:20:20.07 1.0 undecidable manual S 305 0.1466 133 0.64 31
IV.PETRA.HHZ. 2020-09-18T10:20:19.49 0.6 undecidable manual S 242 0.1619 130 -0.28 67
IV.RESU.HHE. 2020-09-18T10:20:19.04 1.0 undecidable manual P 216 0.3238 109 0.29 32
IV.CAGR.HHE. 2020-09-18T10:20:18.72 1.0 undecidable manual P 151 0.3292 108 -0.12 33
IV.MSFR.HHZ. 2020-09-18T10:20:17.75 1.0 negative manual P 62 0.2635 114 -0.05 34
IV.GIB.HHE. 2020-09-18T10:20:17.32 1.0 undecidable manual P 291 0.2275 118 0.07 35
IV.PLLN.EHZ. 2020-09-18T10:20:16.58 0.3 negative manual P 305 0.1466 133 0.46 97
IV.PETRA.HHZ. 2020-09-18T10:20:16.01 0.3 undecidable manual P 242 0.1619 130 -0.3 100
IV.CSLB.HHZ. 2020-09-18T10:20:16.45 0.6 negative manual P 279 0.1898 124 -0.25 66
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.1 0.0007297215 0.2816 AML other m 2020-09-18T10:20:21.27
IV.PETRA.HHN. ML:2 0.0006127621 0.3456 AML other m 2020-09-18T10:20:22.52
IV.CSLB.HHE. ML:1.2 8.4236125E-5 0.3008 AML other m 2020-09-18T10:20:21.66
IV.CSLB.HHN. ML:1.3 0.00011002103 0.3968 AML other m 2020-09-18T10:20:25.22
IV.PLLN.EHE. ML:1.9 0.00051148985 0.3584 AML other m 2020-09-18T10:20:21.36
IV.PLLN.EHN. ML:1.8 0.0004528925 0.3392 AML other m 2020-09-18T10:20:24.61
IV.MSFR.HHE. ML:1.4 0.00010211124 0.3392 AML other m 2020-09-18T10:20:24.18
IV.MSFR.HHN. ML:1.4 0.00010093913 0.4352 AML other m 2020-09-18T10:20:24.62
IV.SCIAR.HHE. ML:1.8 0.00018065625 0.4224 AML other m 2020-09-18T10:20:31.18
IV.SCIAR.HHN. ML:1.7 0.00013995595 0.5184 AML other m 2020-09-18T10:20:33.09
IV.SCIAR.HNE. ML:1.9 0.00022058085 0.5248 AML other m 2020-09-18T10:20:30.92
IV.SCIAR.HNN. ML:1.8 0.0001781151 0.5504 AML other m 2020-09-18T10:20:33.08
IV.MUCR.HHE. ML:1.6 9.8810435E-5 0.4032 AML other m 2020-09-18T10:20:32.00
IV.MUCR.HHN. ML:1.7 0.0001083396 0.3584 AML other m 2020-09-18T10:20:30.47
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