Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 18-10-2020 and time 04:41:14 (Italy) in region 6 km N Troina (EN)

A magnitude ML 2.2 earthquake occured in region: 6 km N Troina (EN), on

  • 18-10-2020 02:41:14 (UTC)
  • 18-10-2020 04:41:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8360, 14.5860 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
Troina EN 6 9373 9373
Cerami EN 8 2006 11379
Capizzi ME 10 3176 14555
San Teodoro ME 10 1403 15958
Cesarò ME 11 2439 18397
Gagliano Castelferrato EN 15 3593 21990
Nicosia EN 19 13899 35889
Maniace CT 20 3765 39654
San Fratello ME 20 3707 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)
94 Km W of Messina (238439 inhabitants)
98 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 2.2 2020-10-18
02:41:14		 37.836 14.5865 37 2021-02-26
14:56:04		 Bollettino Sismico Italiano INGV 84603791
Reviewed
Rev100 		ML 2.2 2020-10-18
02:41:14		 37.841 14.5953 36 2020-10-18
02:52:18		 Sala Sismica INGV-Roma 83866801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-18 02:41:14 ± 0.09
Latitude 37.8360 ± 0.0063
Longitude 14.5865 ± 0.0080
Depth (km) 37 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84603791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 750
Semi-minor axis of confidence ellipse (meter) 549
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.12591
Epicentral distance of station farthest from the epicenter (degree) 0.97397
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 83866801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-18 02:52:18

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 84603791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-10 12:04:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IFIL.HHZ. 2020-10-18T02:41:39.56 0.3 undecidable manual S 359 80.7636 54 0.01 67
IV.RAFF.HHZ. 2020-10-18T02:41:37.80 0.3 undecidable manual S 196 70.8735 54 0.39 63
IV.HCRL.HHZ. 2020-10-18T02:41:37.39 0.6 undecidable manual S 147 72.7716 54 -0.44 42
IV.HLNI.HHZ. 2020-10-18T02:41:34.39 0.1 undecidable manual S 155 59.5959 117 -0.33 88
IV.CSLB.HHZ. 2020-10-18T02:41:32.10 0.3 undecidable manual S 284 47.619 124 0.14 70
IV.PLLN.EHZ. 2020-10-18T02:41:31.02 0.3 undecidable manual S 294 42.5241 127 0.17 70
IV.HAVL.HHZ. 2020-10-18T02:41:31.91 0.6 undecidable manual P 154 108.114 54 -0.52 39
IV.ESML.HHZ. 2020-10-18T02:41:29.19 0.1 undecidable manual S 133 35.2425 133 -0.17 94
IV.AGST.EHZ. 2020-10-18T02:41:29.24 0.1 undecidable manual P 139 85.4478 54 -0.38 83
IV.SSY.HHZ. 2020-10-18T02:41:29.76 0.3 undecidable manual P 150 86.6466 54 0 67
IV.MUCR.HHZ. 2020-10-18T02:41:28.92 0.1 undecidable manual S 48 34.0437 134 -0.2 94
IV.IFIL.HHZ. 2020-10-18T02:41:28.95 0.1 undecidable manual P 359 80.7636 54 -0.08 90
IV.IACL.HHZ. 2020-10-18T02:41:28.73 0.3 undecidable manual P 345 79.9644 54 -0.19 66
IV.IVPL.HHZ. 2020-10-18T02:41:28.18 0.3 undecidable manual P 30 69.0753 114 0.61 60
IV.EPZF.HHZ. 2020-10-18T02:41:28.08 0.3 undecidable manual S 93 23.754 144 0.77 62
IV.SCIAR.HHZ. 2020-10-18T02:41:28.49 0.3 undecidable manual P 279 74.1702 54 0.28 64
IV.CAGR.HHZ. 2020-10-18T02:41:27.73 0.3 undecidable manual S 198 24.9528 143 0.24 72
IV.HCRL.HHZ. 2020-10-18T02:41:27.46 0.3 undecidable manual P 147 72.7716 54 -0.58 61
IV.RAFF.HHZ. 2020-10-18T02:41:27.92 0.1 negative manual P 196 70.8735 54 0.12 90
IV.MSFR.HHZ. 2020-10-18T02:41:26.28 0.1 undecidable manual S 1 21.9669 147 -0.76 82
IV.HLNI.HHZ. 2020-10-18T02:41:25.76 0.3 undecidable manual P 155 59.5959 117 -0.49 64
IV.GALF.HHZ. 2020-10-18T02:41:25.75 0.1 undecidable manual S 187 13.9749 157 -0.29 96
IV.PLLN.EHZ. 2020-10-18T02:41:24.06 0.1 undecidable manual P 294 42.5241 127 0.05 96
IV.ESML.HHZ. 2020-10-18T02:41:24.05 0.3 undecidable manual P 133 35.2425 133 0.9 57
IV.CSLB.HHZ. 2020-10-18T02:41:24.28 0.3 undecidable manual P 284 47.619 124 -0.37 68
IV.EMSG.HHE. 2020-10-18T02:41:23.82 0.3 undecidable manual P 93 31.8459 136 1.05 54
IV.PETRA.HHE. 2020-10-18T02:41:23.93 0.3 undecidable manual P 270 41.3253 128 0.07 72
IV.EPZF.HHZ. 2020-10-18T02:41:22.58 0.1 undecidable manual P 93 23.754 144 0.62 88
IV.MUCR.HHZ. 2020-10-18T02:41:22.93 0.1 undecidable manual P 48 34.0437 134 -0.08 97
IV.CAGR.HHZ. 2020-10-18T02:41:22.65 0.3 undecidable manual P 198 24.9528 143 0.58 66
IV.MSFR.HHZ. 2020-10-18T02:41:21.87 0.1 undecidable manual P 1 21.9669 147 0.06 100
IV.GALF.HHZ. 2020-10-18T02:41:20.62 0.1 negative manual P 187 13.9749 157 -0.61 88
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.6 0.00138 0.6 AML other m 2020-10-18T02:41:26.14
IV.GALF.HHN. ML:2.2 0.000686 0.46 AML other m 2020-10-18T02:41:27.57
IV.EPZF.HHN. ML:2.2 0.0004645 1.4 AML other m 2020-10-18T02:41:30.70
IV.MUCR.HHE. ML:2.0 0.000243 0.4 AML other m 2020-10-18T02:41:31.72
IV.MUCR.HHN. ML:2.0 0.000262 0.56 AML other m 2020-10-18T02:41:32.70
IV.EPZF.HHE. ML:2.1 0.0003785 0.6 AML other m 2020-10-18T02:41:33.85
IV.PLLN.EHN. ML:2.6 0.000877 0.48 AML other m 2020-10-18T02:41:34.64
IV.PLLN.EHE. ML:2.5 0.0008375 0.54 AML other m 2020-10-18T02:41:34.93
IV.HLNI.HHE. ML:1.9 0.000141 0.48 AML other m 2020-10-18T02:41:36.72
IV.HLNI.HHN. ML:1.8 0.00009925 1.74 AML other m 2020-10-18T02:41:36.03
IV.ESML.HHE. ML:2.0 0.0002475 0.46 AML other m 2020-10-18T02:41:38.07
IV.HCRL.HHE. ML:2.2 0.0001895 0.4 AML other m 2020-10-18T02:41:38.52
IV.HCRL.HHN. ML:2.0 0.00013550000000000001 0.7 AML other m 2020-10-18T02:41:39.19
IV.ESML.HHN. ML:1.9 0.00020950000000000002 1.28 AML other m 2020-10-18T02:41:39.97
IV.IFIL.HHN. ML:2.4 0.000289 1.28 AML other m 2020-10-18T02:41:43.89
IV.IFIL.HHE. ML:2.7 0.0006154999999999999 0.9 AML other m 2020-10-18T02:41:45.62
IV.HAVL.HHE. ML:2.1 0.00010875 0.5 AML other m 2020-10-18T02:41:47.67
IV.HAVL.HHN. ML:2.3 0.0001495 0.42 AML other m 2020-10-18T02:41:59.85
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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