Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 17-10-2020 and time 22:14:08 (Italy) in region 4 km NW Troina (EN)

A magnitude ML 2.4 earthquake occured in region: 4 km NW Troina (EN), on

  • 17-10-2020 20:14:08 (UTC)
  • 17-10-2020 22:14:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8170, 14.5730 at 32 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 4 9373 9373
Cerami EN 6 2006 11379
Capizzi ME 9 3176 14555
San Teodoro ME 12 1403 15958
Gagliano Castelferrato EN 12 3593 19551
Cesarò ME 13 2439 21990
Nicosia EN 17 13899 35889
Agira EN 18 8345 44234
Regalbuto EN 19 7277 51511

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km W of Acireale (52622 inhabitants)
57 Km NW of Catania (314555 inhabitants)
58 Km NE of Caltanissetta (63360 inhabitants)
88 Km NE of Gela (75827 inhabitants)
96 Km W of Messina (238439 inhabitants)
97 Km N of Vittoria (63339 inhabitants)
98 Km E of Bagheria (55387 inhabitants)
99 Km W of Reggio di Calabria (183035 inhabitants)
100 Km N of Ragusa (73313 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 2.4 2020-10-17
20:14:08		 37.8172 14.5733 32 2021-02-26
14:56:04		 Bollettino Sismico Italiano INGV 84603021
Reviewed
Rev100 		ML 2.5 2020-10-17
20:14:08		 37.8403 14.5743 32 2020-10-17
20:19:55		 Sala Sismica INGV-Roma 83856941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 20:14:08 ± 0.11
Latitude 37.8172 ± 0.0090
Longitude 14.5733 ± 0.0091
Depth (km) 32 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84603021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 795
Semi-minor axis of confidence ellipse (meter) 594
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 54
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) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 1.29772
Number of stations at which the event was observed 45
Number of stations from which data was used for origin computation 45
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 83856941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 20:18:38

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 84603021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-10 11:18:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHE. 2020-10-17T20:14:38.68 0.3 undecidable manual S 58 95.5377 104 1.39 42
IV.MBFT.HHN. 2020-10-17T20:14:32.29 0.6 undecidable manual P 276 142.5462 54 1.15 27
X3.T1573.HHZ. 2020-10-17T20:14:32.39 0.3 undecidable manual P 273 144.0447 54 1.07 42
IV.JOPP.HNN. 2020-10-17T20:14:31.45 0.1 undecidable manual P 52 144.0447 54 0.13 80
IV.SCIAC.HHN. 2020-10-17T20:14:30.32 0.3 undecidable manual P 256 133.4664 54 0.32 59
IV.SOI.EHN. 2020-10-17T20:14:30.26 0.3 undecidable manual P 77 132.6672 54 0.36 59
MN.CLTB.HHN. 2020-10-17T20:14:30.35 0.3 undecidable manual P 258 122.0889 54 1.77 29
IV.HPAC.HHZ. 2020-10-17T20:14:29.60 0.3 undecidable manual P 161 129.5703 54 0.08 63
MN.CEL.HNZ. 2020-10-17T20:14:29.15 0.3 undecidable manual P 67 125.3745 54 0.14 62
IV.CORL.HHZ. 2020-10-17T20:14:26.21 0.3 undecidable manual P 275 111.4995 54 -1.06 49
IV.MTTG.HHE. 2020-10-17T20:14:25.72 0.3 undecidable manual P 78 100.7214 54 -0.21 65
IV.HAVL.HHZ. 2020-10-17T20:14:25.81 0.3 undecidable manual P 153 106.7154 54 -0.86 52
IV.MSRU.HHE. 2020-10-17T20:14:25.12 0.3 undecidable manual P 58 95.5377 104 -0.06 67
IV.HMDC.HNN. 2020-10-17T20:14:24.76 0.3 undecidable manual P 169 96.9252 104 -0.64 58
IV.PLLN.EHZ. 2020-10-17T20:14:24.64 0.3 undecidable manual S 297 42.4242 122 0.57 65
IV.CSLB.HHZ. 2020-10-17T20:14:24.73 0.6 undecidable manual S 287 47.1195 119 -0.42 46
IV.ACATE.HNE. 2020-10-17T20:14:24.44 0.3 undecidable manual P 184 88.245 105 0.35 65
IV.ESML.HHZ. 2020-10-17T20:14:23.23 0.6 undecidable manual S 129 34.743 128 0.82 42
IV.PETRA.HHZ. 2020-10-17T20:14:23.73 0.3 undecidable manual S 273 40.2264 124 0.14 73
IV.IFIL.HHZ. 2020-10-17T20:14:22.88 0.3 undecidable manual P 0 82.8504 106 -0.41 65
IV.MUCR.HHZ. 2020-10-17T20:14:22.10 0.6 undecidable manual S 46 36.3414 127 -0.64 43
IV.IACL.HHZ. 2020-10-17T20:14:22.10 0.3 undecidable manual P 347 81.6516 107 -1.02 52
IV.SSY.HHZ. 2020-10-17T20:14:22.97 0.3 undecidable manual P 149 85.3479 106 -0.7 57
IV.EPZF.HHZ. 2020-10-17T20:14:21.40 0.6 undecidable manual S 88 24.8529 138 0.92 41
IV.RAFF.HHZ. 2020-10-17T20:14:21.14 0.1 undecidable manual P 196 68.4759 110 -0.05 95
IV.IVUG.HHZ. 2020-10-17T20:14:21.41 0.6 undecidable manual P 29 73.6707 108 -0.53 42
IV.HVZN.HNZ. 2020-10-17T20:14:21.11 0.3 undecidable manual P 170 71.9724 109 -0.58 62
IV.HAGA.HHZ. 2020-10-17T20:14:21.55 0.3 undecidable manual P 139 78.0663 107 -1.05 50
IV.IVPL.HNE. 2020-10-17T20:14:21.68 0.3 undecidable manual P 30 71.4729 109 0.06 71
IV.SCIAR.HHZ. 2020-10-17T20:14:21.91 0.3 undecidable manual P 281 73.4709 108 0 71
IV.HCRL.HHZ. 2020-10-17T20:14:20.78 0.3 undecidable manual P 146 71.6727 109 -0.87 55
IV.RESU.HHZ. 2020-10-17T20:14:20.02 0.6 undecidable manual P 248 49.1175 118 1.57 26
IV.CPTP.HHZ. 2020-10-17T20:14:20.31 0.3 undecidable manual P 219 57.9975 114 0.62 63
IV.MSFR.HHZ. 2020-10-17T20:14:20.19 0.6 undecidable manual S 4 24.0537 139 -0.15 50
IV.HLNI.HHZ. 2020-10-17T20:14:19.18 0.3 undecidable manual P 153 58.1973 114 -0.54 64
IV.EFIU.HHE. 2020-10-17T20:14:19.52 0.3 undecidable manual P 93 55.8996 115 0.13 73
IV.EPOZ.HHZ. 2020-10-17T20:14:19.65 0.3 undecidable manual P 106 56.2992 114 0.2 72
IV.AIO.HHZ. 2020-10-17T20:14:19.52 0.3 undecidable manual P 73 60.1953 113 -0.48 66
IV.GALF.HHZ. 2020-10-17T20:14:18.51 0.3 undecidable manual S 183 11.7771 158 -0.1 77
IV.ENIC.HHZ. 2020-10-17T20:14:18.27 0.3 undecidable manual P 118 44.4222 121 0.46 69
IV.ECTS.HHZ. 2020-10-17T20:14:18.17 0.3 undecidable manual P 81 48.5181 118 -0.2 71
MN.VAE.HHZ. 2020-10-17T20:14:18.41 0.3 undecidable manual P 207 43.2234 122 0.75 62
IV.EPIT.HHN. 2020-10-17T20:14:18.53 0.3 undecidable manual P 91 42.3243 122 0.98 57
IV.GIB.HHE. 2020-10-17T20:14:18.50 0.3 undecidable manual P 292 51.6039 117 -0.29 71
IV.PLLN.EHZ. 2020-10-17T20:14:17.47 0.1 undecidable manual P 297 42.4242 122 -0.09 100
IV.CSLB.HHZ. 2020-10-17T20:14:17.54 0.1 undecidable manual P 287 47.1195 119 -0.64 87
IV.ESML.HHZ. 2020-10-17T20:14:17.22 0.3 undecidable manual P 129 34.743 128 0.63 67
IV.PETRA.HHZ. 2020-10-17T20:14:17.20 0.3 undecidable manual P 273 40.2264 124 -0.07 75
IV.EMSG.HHZ. 2020-10-17T20:14:17.38 0.3 undecidable manual P 89 33.0447 130 1 57
IV.MUCR.HHZ. 2020-10-17T20:14:16.21 0.1 undecidable manual P 46 36.3414 127 -0.57 89
IV.EPZF.HHZ. 2020-10-17T20:14:15.84 0.1 positive manual P 88 24.8529 138 0.37 97
IV.CAGR.HHE. 2020-10-17T20:14:15.93 0.3 undecidable manual P 197 22.5552 141 0.68 66
IV.MSFR.HHZ. 2020-10-17T20:14:14.84 0.1 undecidable manual P 4 24.0537 139 -0.56 92
IV.GALF.HHZ. 2020-10-17T20:14:13.97 0.1 negative manual P 183 11.7771 158 -0.43 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HNE. ML:2.1 0.0006445000000000001 0.6 AML other m 2020-10-17T20:14:19.51
IV.GALF.HHE. ML:3.1 0.005730000000000001 0.56 AML other m 2020-10-17T20:14:19.50
IV.GALF.HHN. ML:2.7 0.00227 1.44 AML other m 2020-10-17T20:14:20.91
IV.GALF.HNN. ML:1.9 0.000357 0.72 AML other m 2020-10-17T20:14:20.92
IV.SCIAR.HNE. ML:2.3 0.00029049999999999996 1.44 AML other m 2020-10-17T20:14:23.21
IV.EPZF.HHN. ML:2.5 0.00106 0.58 AML other m 2020-10-17T20:14:23.34
IV.MUCR.HHE. ML:2.4 0.000812 0.38 AML other m 2020-10-17T20:14:25.05
IV.ESML.HHE. ML:2.3 0.000637 0.74 AML other m 2020-10-17T20:14:25.93
IV.MUCR.HHN. ML:2.5 0.000904 1.4 AML other m 2020-10-17T20:14:26.03
IV.EPZF.HHE. ML:2.4 0.00092 0.48 AML other m 2020-10-17T20:14:26.91
IV.EMSG.HHE. ML:2.6 0.00135 0.68 AML other m 2020-10-17T20:14:27.84
IV.EMSG.HHN. ML:2.5 0.000987 0.44 AML other m 2020-10-17T20:14:27.62
IV.PETRA.HHE. ML:2.3 0.0005960000000000001 0.42 AML other m 2020-10-17T20:14:28.06
IV.HLNI.HHE. ML:2.3 0.0003565 0.96 AML other m 2020-10-17T20:14:29.14
IV.ENIC.HHE. ML:2.5 0.0008475 1.64 AML other m 2020-10-17T20:14:30.15
IV.HLNI.HHN. ML:2.4 0.000448 0.24 AML other m 2020-10-17T20:14:30.42
IV.PETRA.HHN. ML:2.2 0.0004425 0.6 AML other m 2020-10-17T20:14:30.43
IV.AIO.HHE. ML:2.4 0.0004535 0.32 AML other m 2020-10-17T20:14:30.73
IV.AIO.HHN. ML:2.6 0.000704 0.4 AML other m 2020-10-17T20:14:30.54
IV.HCRL.HHE. ML:2.6 0.0005995 0.38 AML other m 2020-10-17T20:14:31.89
IV.ESML.HHN. ML:2.3 0.000641 1.08 AML other m 2020-10-17T20:14:31.19
IV.HCRL.HHN. ML:2.4 0.000348 0.42 AML other m 2020-10-17T20:14:32.30
IV.RAFF.HHE. ML:2.3 0.00033099999999999997 0.7 AML other m 2020-10-17T20:14:32.71
IV.RAFF.HHN. ML:2.2 0.000221 0.48 AML other m 2020-10-17T20:14:33.51
IV.SCIAR.HNN. ML:2.4 0.000371 0.66 AML other m 2020-10-17T20:14:35.37
IV.ENIC.HHN. ML:2.5 0.000748 0.7 AML other m 2020-10-17T20:14:35.18
IV.SCIAR.HHE. ML:2.4 0.000348 1.36 AML other m 2020-10-17T20:14:35.83
IV.SCIAR.HHN. ML:2.3 0.0002935 1.34 AML other m 2020-10-17T20:14:36.28
IV.HAVL.HHE. ML:2.6 0.0003045 0.84 AML other m 2020-10-17T20:14:40.42
IV.HAVL.HHN. ML:2.6 0.000354 0.34 AML other m 2020-10-17T20:14:40.76
IV.IACL.HHN. ML:2.5 0.00040500000000000003 0.44 AML other m 2020-10-17T20:14:42.23
IV.IACL.HHE. ML:2.4 0.000305 0.62 AML other m 2020-10-17T20:14:42.53
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