Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-10-2020 and time 07:23:27 (Italy) in region 5 km NE Cerami (EN)

A magnitude ML 1.7 earthquake occured in region: 5 km NE Cerami (EN), on

  • 20-10-2020 05:23:27 (UTC)
  • 20-10-2020 07:23:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8410, 14.5470 at 36 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
Cerami EN 5 2006 2006
Capizzi ME 6 3176 5182
Troina EN 8 9373 14555
San Teodoro ME 14 1403 15958
Gagliano Castelferrato EN 15 3593 19551
Cesarò ME 15 2439 21990
Nicosia EN 17 13899 35889
Sperlinga EN 19 805 36694
Mistretta ME 19 4791 41485
San Fratello ME 20 3707 45192

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km NE of Caltanissetta (63360 inhabitants)
60 Km W of Acireale (52622 inhabitants)
61 Km NW of Catania (314555 inhabitants)
90 Km N of Gela (75827 inhabitants)
95 Km E of Bagheria (55387 inhabitants)
97 Km W of Messina (238439 inhabitants)
99 Km N of Vittoria (63339 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 2020-10-20
05:23:27		 37.8412 14.5468 36 2021-02-26
14:56:06		 Bollettino Sismico Italiano INGV 84843051
Reviewed
Rev100 		ML 1.8 2020-10-20
05:23:27		 37.836 14.5617 32 2020-10-20
05:30:43		 Sala Sismica INGV-Roma 83942841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-20 05:23:27 ± 0.08
Latitude 37.8412 ± 0.0045
Longitude 14.5468 ± 0.0068
Depth (km) 36 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84843051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 424
Semi-minor axis of confidence ellipse (meter) 417
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.13130
Epicentral distance of station farthest from the epicenter (degree) 0.80040
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 84843051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-19 11:23:03

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 83942841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-20 05:30:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-10-20T05:23:54.45 0.6 undecidable manual S 148 88.8444 54 0.09 44
IV.RAFF.HHZ. 2020-10-20T05:23:50.36 0.6 undecidable manual S 193 70.4739 113 0.1 45
IV.AIO.HHZ. 2020-10-20T05:23:48.61 0.6 undecidable manual S 76 61.7937 116 0.48 43
IV.HLNI.HHZ. 2020-10-20T05:23:48.36 0.6 undecidable manual S 152 61.6938 116 0.25 45
IV.CSLB.HHZ. 2020-10-20T05:23:44.04 0.6 undecidable manual S 284 44.1225 125 -0.02 48
IV.GIB.HHE. 2020-10-20T05:23:44.90 0.6 undecidable manual S 290 48.5181 122 -0.13 47
IV.SSY.HHZ. 2020-10-20T05:23:42.77 0.3 undecidable manual P 148 88.8444 54 -0.29 63
IV.MUCR.HHZ. 2020-10-20T05:23:42.23 0.6 undecidable manual S 52 36.3414 131 -0.19 47
IV.IACL.HHE. 2020-10-20T05:23:41.78 0.3 undecidable manual P 348 78.5658 54 0 68
IV.IFIL.HHZ. 2020-10-20T05:23:41.54 0.6 undecidable manual P 2 80.2641 54 -0.45 41
IV.RAFF.HHZ. 2020-10-20T05:23:40.78 0.1 negative manual P 193 70.4739 113 0.08 91
IV.IVPL.HHZ. 2020-10-20T05:23:40.70 0.3 undecidable manual P 32 70.374 113 0.02 69
IV.EPZF.HHZ. 2020-10-20T05:23:40.89 0.6 undecidable manual S 94 27.2505 140 0.18 48
IV.MSFR.HHZ. 2020-10-20T05:23:39.33 0.6 undecidable manual S 10 21.7671 146 -0.5 45
IV.AIO.HHZ. 2020-10-20T05:23:39.75 0.3 undecidable manual P 76 61.7937 116 0.28 67
IV.HLNI.HHZ. 2020-10-20T05:23:39.19 0.3 undecidable manual P 152 61.6938 116 -0.26 67
IV.GALF.HHZ. 2020-10-20T05:23:38.68 0.3 undecidable manual S 173 14.5743 156 -0.23 73
IV.GIB.HHE. 2020-10-20T05:23:38.18 0.3 undecidable manual P 290 48.5181 122 0.5 64
IV.CSLB.HHZ. 2020-10-20T05:23:37.40 0.3 undecidable manual P 284 44.1225 125 0.28 68
IV.PETRA.HHZ. 2020-10-20T05:23:36.28 0.3 undecidable manual P 269 37.8288 130 -0.07 73
IV.MUCR.HHZ. 2020-10-20T05:23:36.11 0.3 undecidable manual P 52 36.3414 131 -0.06 73
IV.EPZF.HHZ. 2020-10-20T05:23:35.49 0.3 undecidable manual P 94 27.2505 140 0.31 71
IV.CAGR.HHZ. 2020-10-20T05:23:35.00 0.3 undecidable manual P 190 24.6531 143 0.06 74
IV.MSFR.HHZ. 2020-10-20T05:23:34.72 0.1 undecidable manual P 10 21.7671 146 0.04 100
IV.GALF.HHZ. 2020-10-20T05:23:33.72 0.1 undecidable manual P 173 14.5743 156 -0.42 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.2 0.0005579430999999999 0.6176 AML other m 2020-10-20T05:23:38.97
IV.GALF.HHN. ML:1.9 0.00031229655 0.5408 AML other m 2020-10-20T05:23:40.66
IV.MSFR.HHN. ML:1.5 0.00011160777999999999 0.3424 AML other m 2020-10-20T05:23:40.93
IV.MSFR.HHE. ML:1.2 0.000056076635 0.3424 AML other m 2020-10-20T05:23:41.09
IV.EPZF.HHE. ML:1.7 0.00015622628999999998 0.72 AML other m 2020-10-20T05:23:41.99
IV.EPZF.HHN. ML:1.9 0.000238397 0.72 AML other m 2020-10-20T05:23:41.91
IV.GALF.HNE. ML:1.6 0.0001486971 1.312 AML other m 2020-10-20T05:23:43.49
IV.MUCR.HHE. ML:1.7 0.00012446205 0.4 AML other m 2020-10-20T05:23:42.90
IV.GALF.HNN. ML:1.5 0.00013091504999999997 1.0208 AML other m 2020-10-20T05:23:43.18
IV.MUCR.HHN. ML:1.8 0.00015202865 0.5408 AML other m 2020-10-20T05:23:45.57
IV.PETRA.HHE. ML:1.4 0.00007204539 0.3808 AML other m 2020-10-20T05:23:47.29
IV.PETRA.HHN. ML:1.5 0.00007288448 0.32 AML other m 2020-10-20T05:23:48.75
IV.HLNI.HHE. ML:1.6 0.00006232779 0.1984 AML other m 2020-10-20T05:23:49.06
IV.HLNI.HHN. ML:1.7 0.00008875796999999999 0.1984 AML other m 2020-10-20T05:23:49.85
IV.AIO.HHN. ML:1.7 0.000086656755 0.4192 AML other m 2020-10-20T05:23:50.21
IV.AIO.HHE. ML:1.6 0.00006519577999999999 0.3616 AML other m 2020-10-20T05:23:50.50
IV.RAFF.HHE. ML:1.6 0.00005841778 0.32 AML other m 2020-10-20T05:23:52.14
IV.IVPL.HHN. ML:1.9 0.00011643439999999999 0.4384 AML other m 2020-10-20T05:23:53.74
IV.IVPL.HHE. ML:1.8 0.00009342502499999999 0.4608 AML other m 2020-10-20T05:23:54.85
IV.SSY.HHE. ML:2.6 0.00043466669999999997 0.32 AML other m 2020-10-20T05:23:54.83
IV.RAFF.HHN. ML:1.5 0.000046811685000000003 0.48 AML other m 2020-10-20T05:23:57.54
IV.SSY.HHN. ML:2.7 0.0005797531 0.2592 AML other m 2020-10-20T05:23:59.46
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