Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 18-10-2020 and time 07:20:11 (Italy) in region 10 km W Milo (CT)

A magnitude ML 1.9 earthquake occured in region: 10 km W Milo (CT), on

  • 18-10-2020 05:20:11 (UTC)
  • 18-10-2020 07:20:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7500, 15.0100 at 2 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
Milo CT 10 1087 1087
Zafferana Etnea CT 10 9517 10604
Sant'Alfio CT 12 1582 12186
Santa Venerina CT 13 8592 20778
Ragalna CT 15 3924 24702
Nicolosi CT 15 7463 32165
Pedara CT 15 14102 46267
Maletto CT 15 3920 50187
Randazzo CT 15 10900 61087
Giarre CT 16 27659 88746
Linguaglossa CT 16 5403 94149
Trecastagni CT 16 10910 105059
Bronte CT 16 19172 124231
Piedimonte Etneo CT 16 3963 128194
Mascali CT 16 14282 142476
Biancavilla CT 17 24007 166483
Moio Alcantara ME 17 717 167200
Viagrande CT 17 8563 175763
Riposto CT 17 14838 190601
Belpasso CT 18 28108 218709
Castiglione di Sicilia CT 18 3215 221924
Fiumefreddo di Sicilia CT 18 9623 231547
Santa Maria di Licodia CT 18 7641 239188
Adrano CT 18 36122 275310
Aci Bonaccorsi CT 19 3524 278834
Aci Sant'Antonio CT 19 17984 296818
Santa Domenica Vittoria ME 19 980 297798
Malvagna ME 19 733 298531
San Pietro Clarenza CT 20 7743 306274
Mascalucia CT 20 31958 338232
Aci Catena CT 20 29851 368083
Tremestieri Etneo CT 20 20589 388672

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km SW of Messina (238439 inhabitants)
81 Km N of Siracusa (122291 inhabitants)
88 Km E of Caltanissetta (63360 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
98 Km NE 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 1.9 2020-10-18
05:20:11		 37.7497 15.0097 2 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85498431
Reviewed
Rev200 		ML 1.7 2020-10-18
05:20:10		 37.756 15.009 1 2020-12-17
17:04:57		 Sala Operativa INGV_OE (Catania) 83871021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-18 05:20:11 ± 0.13
Latitude 37.7497 ± 0.0045
Longitude 15.0097 ± 0.0057
Depth (km) 2 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85498431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 547
Semi-minor axis of confidence ellipse (meter) 210
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 114
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.01709
Epicentral distance of station farthest from the epicenter (degree) 0.31206
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:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 85498431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-17 17:04:36

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 83871021
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-18 05:26:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2020-10-18T05:20:18.47 0.6 undecidable manual P 340 34.6431 93 -0.07 49
IV.EVRN.HHZ. 2020-10-18T05:20:16.46 0.6 undecidable manual S 121 12.9759 97 0.34 48
IV.ESML.HHZ. 2020-10-18T05:20:15.88 0.3 undecidable manual P 218 18.5703 95 0.56 67
IV.EPIT.HHN. 2020-10-18T05:20:15.14 0.3 undecidable manual S 31 7.9809 102 0.72 64
IV.EPOZ.HHZ. 2020-10-18T05:20:15.50 0.3 undecidable manual P 119 17.871 95 0.3 71
IV.EMSG.HHZ. 2020-10-18T05:20:15.65 0.3 undecidable manual S 326 9.4794 100 0.72 64
IV.EPZF.HHZ. 2020-10-18T05:20:14.57 0.1 undecidable manual P 302 15.6732 96 -0.19 98
IV.ENIC.HHZ. 2020-10-18T05:20:14.25 0.6 undecidable manual P 175 13.1757 97 0 51
IV.ECHR.HHE. 2020-10-18T05:20:14.23 0.1 undecidable manual P 230 10.9779 99 0.4 94
IV.ECTS.HHZ. 2020-10-18T05:20:14.92 0.3 undecidable manual P 34 17.6712 95 -0.22 73
IV.ECBD.HHN. 2020-10-18T05:20:14.60 0.3 undecidable manual S 63 7.5813 102 0.33 72
IV.EMSG.HHZ. 2020-10-18T05:20:13.31 0.1 undecidable manual P 326 9.4794 100 -0.21 99
IV.EMCN.HNZ. 2020-10-18T05:20:13.31 0.3 undecidable manual S 25 5.0949 108 -0.13 76
IV.EVRN.HHZ. 2020-10-18T05:20:13.93 0.3 undecidable manual P 121 12.9759 97 -0.28 72
IV.ESLN.HHZ. 2020-10-18T05:20:13.94 0.3 undecidable manual S 206 6.993 103 -0.14 75
IV.EPIT.HHN. 2020-10-18T05:20:13.02 0.1 undecidable manual P 31 7.9809 102 -0.21 99
IV.ECNE.HHN. 2020-10-18T05:20:12.73 0.3 undecidable manual S 338 1.8981 132 0.27 74
IV.ECBD.HHN. 2020-10-18T05:20:12.90 0.1 undecidable manual P 63 7.5813 102 -0.24 98
IV.EMCN.HNZ. 2020-10-18T05:20:12.22 0.1 negative manual P 25 5.0949 108 -0.44 95
IV.ESLN.HHZ. 2020-10-18T05:20:12.87 0.1 positive manual P 206 6.993 103 -0.16 100
IV.ECNE.HHN. 2020-10-18T05:20:11.80 0.1 undecidable manual P 338 1.8981 132 -0.29 98
IV.ECPN.HHZ. 2020-10-18T05:20:11.86 0.3 undecidable manual P 252 2.0979 128 -0.28 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HNE. ML:1.8 0.0010454999999999998 0.54 AML other m 2020-10-18T05:20:16.93
IV.ENIC.HHE. ML:1.9 0.00117 0.58 AML other m 2020-10-18T05:20:19.03
IV.EVRN.HHE. ML:2.0 0.001325 1.28 AML other m 2020-10-18T05:20:19.05
IV.EVRN.HNN. ML:2.0 0.0014500000000000001 1.12 AML other m 2020-10-18T05:20:20.66
IV.EPOZ.HHN. ML:1.8 0.000628 0.7 AML other m 2020-10-18T05:20:20.88
IV.EVRN.HHN. ML:2.0 0.001425 1.36 AML other m 2020-10-18T05:20:20.70
IV.EPOZ.HHE. ML:1.7 0.000468 1.18 AML other m 2020-10-18T05:20:20.12
IV.ENIC.HHN. ML:1.8 0.0009295 0.4 AML other m 2020-10-18T05:20:21.94
IV.ESML.HHE. ML:1.7 0.000497 0.48 AML other m 2020-10-18T05:20:23.39
IV.EPZF.HHE. ML:2.1 0.001565 0.58 AML other m 2020-10-18T05:20:23.62
IV.EPZF.HHN. ML:2.0 0.00128 0.36 AML other m 2020-10-18T05:20:23.50
IV.ESML.HHN. ML:1.7 0.000507 1.5 AML other m 2020-10-18T05:20:26.90
IV.MUCR.HHE. ML:1.5 0.00014125 0.72 AML other m 2020-10-18T05:20:30.00
IV.MUCR.HHN. ML:1.6 0.0001705 1.54 AML other m 2020-10-18T05:20:30.04
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