Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 18-11-2020 and time 05:26:57 (Italy) in region 7 km N Troina (EN)

A magnitude ML 1.9 earthquake occured in region: 7 km N Troina (EN), on

  • 18-11-2020 04:26:57 (UTC)
  • 18-11-2020 05:26:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8500, 14.6100 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 7 9373 9373
San Teodoro ME 8 1403 10776
Cesarò ME 9 2439 13215
Cerami EN 10 2006 15221
Capizzi ME 11 3176 18397
Gagliano Castelferrato EN 17 3593 21990
Maniace CT 18 3765 25755
San Fratello ME 18 3707 29462

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km NW of Acireale (52622 inhabitants)
57 Km NW of Catania (314555 inhabitants)
62 Km NE of Caltanissetta (63360 inhabitants)
91 Km W of Messina (238439 inhabitants)
93 Km NE of Gela (75827 inhabitants)
95 Km W of Reggio di Calabria (183035 inhabitants)
100 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 1.9 2020-11-18
04:26:57		 37.8502 14.6095 36 2021-02-26
14:56:09		 Bollettino Sismico Italiano INGV 85157851
Reviewed
Rev100 		ML 1.8 2020-11-18
04:26:57		 37.8407 14.6125 35 2020-11-18
04:49:42		 Sala Sismica INGV-Roma 84817381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-18 04:26:57 ± 0.12
Latitude 37.8502 ± 0.0090
Longitude 14.6095 ± 0.0114
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 85157851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1060
Semi-minor axis of confidence ellipse (meter) 841
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.14299
Epicentral distance of station farthest from the epicenter (degree) 0.78331
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 85157851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-02 17:10:04

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 84817381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-18 04:49:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-11-18T04:27:23.66 0.3 undecidable manual S 152 86.9463 54 0.33 63
IV.HAGA.HHZ. 2020-11-18T04:27:21.44 0.3 undecidable manual S 142 78.9654 54 -0.16 66
IV.HCRL.HHZ. 2020-11-18T04:27:20.32 0.6 undecidable manual S 149 73.0713 112 0 46
IV.HLNI.HHZ. 2020-11-18T04:27:17.85 0.6 undecidable manual S 157 60.1953 117 0.65 40
IV.PLLN.EHZ. 2020-11-18T04:27:14.25 0.3 undecidable manual S 291 43.7229 126 0.83 58
IV.CSLB.HHZ. 2020-11-18T04:27:14.90 0.3 undecidable manual S 282 49.2174 122 0.26 68
IV.PETRA.HHN. 2020-11-18T04:27:13.87 1.0 undecidable manual S 268 43.4232 126 0.53 22
IV.SSY.HHZ. 2020-11-18T04:27:12.08 0.1 undecidable manual P 152 86.9463 54 -0.14 86
IV.IACL.HHE. 2020-11-18T04:27:11.06 0.1 undecidable manual P 344 78.9654 54 -0.16 88
IV.HCRL.HHZ. 2020-11-18T04:27:11.12 0.1 undecidable manual P 149 73.0713 112 0.64 78
IV.MUCR.HHZ. 2020-11-18T04:27:10.89 0.3 undecidable manual S 47 31.5462 136 -0.04 74
IV.HAGA.HHZ. 2020-11-18T04:27:10.47 0.1 undecidable manual P 142 78.9654 54 -0.75 74
IV.HVZN.HNZ. 2020-11-18T04:27:10.97 1.0 undecidable manual P 173 75.0693 54 0.23 22
IV.MSFR.HHZ. 2020-11-18T04:27:08.82 0.3 undecidable manual S 356 20.4684 148 -0.28 72
IV.HLNI.HHZ. 2020-11-18T04:27:08.58 0.1 undecidable manual P 157 60.1953 117 -0.1 91
IV.CSLB.HHZ. 2020-11-18T04:27:07.02 0.1 undecidable manual P 282 49.2174 122 -0.18 92
IV.GALF.HHZ. 2020-11-18T04:27:07.69 0.3 undecidable manual S 194 15.873 154 -0.83 59
IV.PLLN.EHZ. 2020-11-18T04:27:06.35 0.1 undecidable manual P 291 43.7229 126 -0.15 94
IV.PETRA.HHN. 2020-11-18T04:27:06.41 0.1 undecidable manual P 268 43.4232 126 -0.04 95
IV.EPZF.HHZ. 2020-11-18T04:27:05.01 0.1 undecidable manual P 98 21.867 146 0.89 77
IV.MUCR.HHZ. 2020-11-18T04:27:05.05 0.1 undecidable manual P 47 31.5462 136 -0.01 98
IV.CAGR.HHE. 2020-11-18T04:27:05.36 0.6 undecidable manual P 201 27.0507 140 0.76 41
IV.MSFR.HHZ. 2020-11-18T04:27:04.02 0.1 undecidable manual P 356 20.4684 148 0.02 100
IV.GALF.HHZ. 2020-11-18T04:27:02.91 0.1 undecidable manual P 194 15.873 154 -0.76 82
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHN. ML:1.8 0.00016249999999999997 0.48 AML other m 2020-11-18T04:27:14.84
IV.MSFR.HHN. ML:1.4 0.000095989225 0.3424 AML other m 2020-11-18T04:27:10.35
IV.MUCR.HHE. ML:1.6 0.0001115 0.72 AML other m 2020-11-18T04:27:13.53
IV.PLLN.EHN. ML:2.7 0.0010805 0.58 AML other m 2020-11-18T04:27:16.72
IV.HLNI.HHE. ML:1.6 0.00006840000000000001 0.64 AML other m 2020-11-18T04:27:18.03
IV.HLNI.HHN. ML:1.4 0.000037918605 0.2624 AML other m 2020-11-18T04:27:19.35
IV.HCRL.HHE. ML:1.6 0.00006176483 0.1792 AML other m 2020-11-18T04:27:21.74
IV.HAGA.HHE. ML:2.0 0.000134 1.2 AML other m 2020-11-18T04:27:21.33
IV.HAGA.HHN. ML:2.1 0.000154 1.58 AML other m 2020-11-18T04:27:22.07
IV.SSY.HHN. ML:2.5 0.0003819503 0.3392 AML other m 2020-11-18T04:27:27.13
IV.SSY.HHE. ML:2.3 0.00023365455000000002 1.0784 AML other m 2020-11-18T04:27:30.86
IV.MSFR.HHE. ML:1.3 0.000065769775 0.3584 AML other m 2020-11-18T04:27:12.87
IV.PLLN.EHE. ML:2.5 0.0006515172500000001 0.56 AML other m 2020-11-18T04:27:17.25
IV.GALF.HHE. ML:2.4 0.00100604675 0.6624 AML other m 2020-11-18T04:27:08.39
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