Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 18-10-2020 and time 18:10:06 (Italy) in region 6 km N Troina (EN)

A magnitude ML 2.1 earthquake occured in region: 6 km N Troina (EN), on

  • 18-10-2020 16:10:06 (UTC)
  • 18-10-2020 18:10:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8400, 14.5900 at 35 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
Troina EN 6 9373 9373
Cerami EN 8 2006 11379
San Teodoro ME 10 1403 12782
Capizzi ME 10 3176 15958
Cesarò ME 11 2439 18397
Gagliano Castelferrato EN 15 3593 21990
San Fratello ME 19 3707 25697
Maniace CT 19 3765 29462
Nicosia EN 20 13899 43361

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km W of Acireale (52622 inhabitants)
58 Km NW of Catania (314555 inhabitants)
60 Km NE of Caltanissetta (63360 inhabitants)
91 Km NE of Gela (75827 inhabitants)
93 Km W of Messina (238439 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
98 Km E of Bagheria (55387 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 2.1 2020-10-18
16:10:06		 37.8397 14.5897 35 2021-02-26
14:56:06		 Bollettino Sismico Italiano INGV 84771351
Reviewed
Rev100 		ML 2.1 2020-10-18
16:10:06		 37.8393 14.5952 36 2020-10-18
16:30:57		 Sala Sismica INGV-Roma 83888041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-18 16:10:06 ± 0.1
Latitude 37.8397 ± 0.0090
Longitude 14.5897 ± 0.0114
Depth (km) 35 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84771351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1117
Semi-minor axis of confidence ellipse (meter) 738
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.18531
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 83888041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-18 16:30:57

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 84771351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-16 12:09:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TDS.HHZ. 2020-10-18T16:11:16.02 3.0 undecidable manual Sg 5.64 0
IV.HPAC.HHZ. 2020-10-18T16:10:43.52 0.3 undecidable manual S 162 131.5683 54 1.03 39
IV.SSY.HHZ. 2020-10-18T16:10:32.83 0.3 undecidable manual S 150 86.8464 54 -0.02 66
IV.MPNC.HHZ. 2020-10-18T16:10:31.34 0.6 undecidable manual S 63 74.8695 111 1.21 30
IV.SCIAR.HHZ. 2020-10-18T16:10:31.30 0.6 undecidable manual S 279 74.4699 111 1.29 26
IV.RAFF.HHZ. 2020-10-18T16:10:30.03 0.3 undecidable manual S 196 71.2731 112 0.79 55
IV.HAGA.HHZ. 2020-10-18T16:10:30.59 0.3 undecidable manual S 141 79.0653 110 -0.59 65
IV.IACL.HHZ. 2020-10-18T16:10:30.44 0.3 undecidable manual S 345 79.5648 54 -0.85 63
IV.IVPL.HHZ. 2020-10-18T16:10:29.70 0.6 undecidable manual S 30 68.5758 113 1.13 34
IV.HPAC.HHZ. 2020-10-18T16:10:27.23 0.3 undecidable manual P 162 131.5683 54 -0.04 61
IV.HLNI.HHZ. 2020-10-18T16:10:26.27 0.3 undecidable manual S 155 59.8956 116 -0.17 68
IV.GIB.HHE. 2020-10-18T16:10:25.31 0.6 undecidable manual S 289 52.1034 120 0.7 41
IV.CSLB.HHE. 2020-10-18T16:10:23.80 0.3 undecidable manual S 283 47.8188 122 0.17 72
IV.PLLN.EHZ. 2020-10-18T16:10:22.77 0.3 undecidable manual S 294 42.624 126 0.29 72
IV.PETRA.HHZ. 2020-10-18T16:10:22.63 0.6 undecidable manual S 269 41.625 126 0.37 47
IV.SSY.HHZ. 2020-10-18T16:10:21.08 0.3 undecidable manual P 150 86.8464 54 -0.62 63
IV.ESML.HHE. 2020-10-18T16:10:21.87 0.3 undecidable manual S 134 35.3424 131 0.91 64
IV.SCIAR.HHZ. 2020-10-18T16:10:21.35 0.1 undecidable manual P 279 74.4699 111 1.29 54
IV.IACL.HHZ. 2020-10-18T16:10:20.23 0.1 undecidable manual P 345 79.5648 54 -0.57 87
IV.MUCR.HHZ. 2020-10-18T16:10:20.20 0.3 undecidable manual S 48 33.5442 133 -0.41 65
IV.MPNC.HHZ. 2020-10-18T16:10:20.69 0.1 undecidable manual P 63 74.8695 111 0.56 80
IV.CAGR.HHZ. 2020-10-18T16:10:20.07 0.6 undecidable manual S 198 25.3524 141 0.95 42
IV.EPZF.HHZ. 2020-10-18T16:10:19.16 0.6 undecidable manual S 94 23.4543 144 0.35 51
IV.RAFF.HHZ. 2020-10-18T16:10:19.27 0.3 undecidable manual P 196 71.2731 112 -0.35 67
IV.IVPL.HHZ. 2020-10-18T16:10:19.78 0.3 undecidable manual P 30 68.5758 113 0.55 63
IV.HAGA.HHZ. 2020-10-18T16:10:19.85 0.3 undecidable manual P 141 79.0653 110 -0.88 58
IV.MSFR.HHZ. 2020-10-18T16:10:18.38 0.3 undecidable manual S 0 21.5673 146 -0.14 72
IV.HLNI.HHZ. 2020-10-18T16:10:17.47 0.3 undecidable manual P 155 59.8956 116 -0.54 64
IV.GALF.HHZ. 2020-10-18T16:10:17.20 0.6 undecidable manual S 188 14.4744 156 -0.39 45
IV.GIB.HHE. 2020-10-18T16:10:16.86 0.3 undecidable manual P 289 52.1034 120 -0.08 73
IV.EMSG.HHN. 2020-10-18T16:10:15.45 0.3 undecidable manual P 94 31.6461 135 1.03 58
IV.PLLN.EHZ. 2020-10-18T16:10:15.72 0.1 undecidable manual P 294 42.624 126 0 100
IV.CSLB.HHE. 2020-10-18T16:10:15.86 0.1 undecidable manual P 283 47.8188 122 -0.52 89
IV.PETRA.HHZ. 2020-10-18T16:10:15.34 0.1 undecidable manual P 269 41.625 126 -0.25 95
IV.ESML.HHE. 2020-10-18T16:10:14.91 0.6 undecidable manual P 134 35.3424 131 0.07 50
IV.MUCR.HHZ. 2020-10-18T16:10:14.38 0.1 undecidable manual P 48 33.5442 133 -0.26 94
IV.CAGR.HHZ. 2020-10-18T16:10:13.39 0.3 undecidable manual P 198 25.3524 141 -0.38 70
IV.EPZF.HHZ. 2020-10-18T16:10:13.93 0.1 undecidable manual P 94 23.4543 144 0.33 99
IV.MSFR.HHZ. 2020-10-18T16:10:13.24 0.1 undecidable manual P 0 21.5673 146 -0.19 98
IV.GALF.HHZ. 2020-10-18T16:10:12.21 0.1 undecidable manual P 188 14.4744 156 -0.68 84
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HNN. ML:1.8 0.0002195 0.6 AML other m 2020-10-18T16:10:17.43
IV.GALF.HHE. ML:2.8 0.002515 0.56 AML other m 2020-10-18T16:10:17.71
IV.GALF.HNE. ML:1.8 0.00027 1.34 AML other m 2020-10-18T16:10:18.71
IV.GALF.HHN. ML:2.3 0.0008245 0.54 AML other m 2020-10-18T16:10:19.12
IV.MSFR.HHN. ML:1.8 0.000219 0.32 AML other m 2020-10-18T16:10:19.52
IV.MSFR.HHE. ML:1.6 0.000127 0.52 AML other m 2020-10-18T16:10:19.34
IV.EPZF.HHE. ML:2.0 0.000375 1.46 AML other m 2020-10-18T16:10:22.92
IV.MUCR.HHE. ML:2.0 0.00028849999999999997 1.1 AML other m 2020-10-18T16:10:23.78
IV.MUCR.HHN. ML:2.1 0.000368 1.46 AML other m 2020-10-18T16:10:24.17
IV.CAGR.HHN. ML:2.1 0.0003855 0.64 AML other m 2020-10-18T16:10:24.56
IV.EPZF.HHN. ML:2.1 0.000383 1.24 AML other m 2020-10-18T16:10:24.75
IV.PLLN.EHN. ML:2.9 0.0017649999999999999 1.4 AML other m 2020-10-18T16:10:26.03
IV.PLLN.EHE. ML:2.7 0.0012150000000000002 0.56 AML other m 2020-10-18T16:10:26.32
IV.CAGR.HHE. ML:2.1 0.000406 0.62 AML other m 2020-10-18T16:10:26.96
IV.PETRA.HHE. ML:2.1 0.00030649999999999997 0.76 AML other m 2020-10-18T16:10:27.22
IV.HLNI.HHN. ML:1.9 0.000139 0.26 AML other m 2020-10-18T16:10:28.62
IV.HLNI.HHE. ML:1.9 0.00014749999999999998 0.48 AML other m 2020-10-18T16:10:28.35
IV.HAGA.HHN. ML:2.5 0.000391 0.66 AML other m 2020-10-18T16:10:31.38
IV.HAGA.HHE. ML:2.5 0.000357 0.5 AML other m 2020-10-18T16:10:31.45
IV.IVPL.HHE. ML:2.2 0.00025550000000000003 0.66 AML other m 2020-10-18T16:10:32.57
IV.IVPL.HHN. ML:2.3 0.00027749999999999997 1.6 AML other m 2020-10-18T16:10:33.03
IV.SSY.HHE. ML:2.8 0.000697 0.32 AML other m 2020-10-18T16:10:33.65
IV.IACL.HHN. ML:2.2 0.0001735 0.74 AML other m 2020-10-18T16:10:34.97
IV.SCIAR.HHE. ML:2.0 0.000121 0.62 AML other m 2020-10-18T16:10:34.99
IV.SSY.HHN. ML:2.8 0.0007664999999999999 0.28 AML other m 2020-10-18T16:10:35.17
IV.SCIAR.HHN. ML:2.1 0.0001655 0.74 AML other m 2020-10-18T16:10:35.41
IV.PETRA.HHN. ML:1.9 0.0001915 0.82 AML other m 2020-10-18T16:10:36.48
IV.IACL.HHE. ML:2.1 0.00015150000000000002 0.7 AML other m 2020-10-18T16:10:38.50
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
Waveforms Seismic signals in miniseed + resp format Download