Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 20-11-2018 and time 05:43:58 (UTC) in region 8 km NE Biancavilla (CT)

A magnitude ML 2.3 earthquake occured in region: 8 km NE Biancavilla (CT), on

  • 20-11-2018 05:43:58 (UTC)
  • 20-11-2018 06:43:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7110, 14.9120 at 25 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
Biancavilla CT 9 24007 24007
Adrano CT 9 36122 60129
Ragalna CT 9 3924 64053
Santa Maria di Licodia CT 11 7641 71694
Bronte CT 11 19172 90866
Maletto CT 14 3920 94786
Belpasso CT 14 28108 122894
Nicolosi CT 15 7463 130357
Paternò CT 15 48228 178585
Pedara CT 17 14102 192687
Zafferana Etnea CT 17 9517 202204
Camporotondo Etneo CT 18 5023 207227
Centuripe EN 18 5470 212697
Milo CT 18 1087 213784
Trecastagni CT 18 10910 224694
San Pietro Clarenza CT 18 7743 232437
Randazzo CT 19 10900 243337
Maniace CT 19 3765 247102
Mascalucia CT 20 31958 279060
Viagrande CT 20 8563 287623

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of Acireale (52622 inhabitants)
28 Km NW of Catania (314555 inhabitants)
78 Km SW of Messina (238439 inhabitants)
78 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
89 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
92 Km NE of Gela (75827 inhabitants)
96 Km N of Modica (54633 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 2.3 2018-11-20
05:43:58		 37.7112 14.9117 25 2019-06-04
09:16:17		 Bollettino Sismico Italiano INGV 68535211
Reviewed
Rev100 		ML 2.3 2018-11-20
05:43:58		 37.709 14.918 24 2018-11-20
05:49:49		 Sala Sismica INGV-Roma 63223541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-20 05:43:58 ± 0.18
Latitude 37.7112 ± 0.0072
Longitude 14.9117 ± 0.0136
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68535211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 935
Semi-minor axis of confidence ellipse (meter) 763
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 930.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
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) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.75813
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 63223541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-20 05:49:49

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 68535211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-14 08:51:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2018-11-20T05:44:24.19 0.6 undecidable manual S 188 84.1491 101 0.39 42
IV.SSY.HHZ. 2018-11-20T05:44:18.75 0.3 undecidable manual S 167 62.9925 105 0.46 65
IV.MPNC.HHZ. 2018-11-20T05:44:18.45 0.3 undecidable manual S 38 61.7937 105 0.47 66
IV.AGST.EHZ. 2018-11-20T05:44:16.88 0.6 undecidable manual S 151 57.5979 107 -0.01 48
IV.AIO.HHZ. 2018-11-20T05:44:13.22 0.6 undecidable manual S 44 40.3263 115 0.65 42
IV.HMDC.HHZ. 2018-11-20T05:44:13.63 0.3 undecidable manual P 188 84.1491 101 0.51 62
IV.HLNI.HHZ. 2018-11-20T05:44:12.73 0.6 undecidable manual S 185 40.3263 115 0.15 48
IV.MUCR.HHE. 2018-11-20T05:44:11.81 0.6 undecidable manual S 355 36.9297 117 0.05 50
IV.GALF.HHZ. 2018-11-20T05:44:10.94 0.3 undecidable manual S 270 30.2475 123 0.72 63
IV.MPNC.HHZ. 2018-11-20T05:44:09.65 0.3 undecidable manual P 38 61.7937 105 -0.11 70
IV.SSY.HHZ. 2018-11-20T05:44:09.65 0.1 undecidable manual P 167 62.9925 105 -0.29 91
IV.AGST.EHZ. 2018-11-20T05:44:08.65 0.3 undecidable manual P 151 57.5979 107 -0.48 66
IV.EPZF.HHZ. 2018-11-20T05:44:07.34 0.6 undecidable manual S 339 13.3755 148 0.33 49
IV.ESLN.HHZ. 2018-11-20T05:44:06.16 0.6 undecidable manual S 110 5.8941 165 -0.04 53
IV.HLNI.HHZ. 2018-11-20T05:44:06.17 0.3 undecidable manual P 185 40.3263 115 -0.47 68
IV.AIO.HHZ. 2018-11-20T05:44:06.63 0.1 positive manual P 44 40.3263 115 0 100
IV.MUCR.HHE. 2018-11-20T05:44:06.09 0.3 undecidable manual P 355 36.9297 117 -0.08 74
IV.GALF.HHZ. 2018-11-20T05:44:04.89 0.1 negative manual P 270 30.2475 123 -0.39 94
IV.EMCN.HNE. 2018-11-20T05:44:03.48 0.3 undecidable manual P 50 13.875 147 0.02 78
IV.ESML.HHE. 2018-11-20T05:44:03.82 0.3 undecidable manual P 195 10.6782 154 0.6 68
IV.ESLN.HHZ. 2018-11-20T05:44:02.43 0.1 undecidable manual P 110 5.8941 165 -0.53 96
IV.EPZF.HHZ. 2018-11-20T05:44:02.77 0.1 undecidable manual P 339 13.3755 148 -0.65 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.8 0.0033799999999999998 1.44 AML other m 2018-11-20T05:44:07.06
IV.EPZF.HHN. ML:2.6 0.002165 1.76 AML other m 2018-11-20T05:44:07.07
IV.GALF.HHE. ML:2.1 0.000484 0.4 AML other m 2018-11-20T05:44:12.96
IV.HLNI.HHE. ML:2.1 0.00038349999999999994 0.3 AML other m 2018-11-20T05:44:13.05
IV.HLNI.HHN. ML:2.2 0.0004485 0.3 AML other m 2018-11-20T05:44:13.34
IV.AIO.HHN. ML:1.8 0.0001955 0.42 AML other m 2018-11-20T05:44:13.59
IV.AIO.HHE. ML:2.2 0.000418 0.34 AML other m 2018-11-20T05:44:13.46
IV.GALF.HHN. ML:1.9 0.00027100000000000003 0.3 AML other m 2018-11-20T05:44:14.17
IV.SSY.HHE. ML:2.6 0.000665 0.36 AML other m 2018-11-20T05:44:20.29
IV.SSY.HHN. ML:2.9 0.001365 0.42 AML other m 2018-11-20T05:44:20.75
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