Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 20-11-2018 and time 06:37:54 (UTC) in region 9 km NE Biancavilla (CT)

A magnitude ML 2.3 earthquake occured in region: 9 km NE Biancavilla (CT), on

  • 20-11-2018 06:37:54 (UTC)
  • 20-11-2018 07:37:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7180, 14.9120 at 29 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 10 3924 64053
Bronte CT 11 19172 83225
Santa Maria di Licodia CT 11 7641 90866
Maletto CT 13 3920 94786
Belpasso CT 15 28108 122894
Nicolosi CT 15 7463 130357
Paternò CT 16 48228 178585
Zafferana Etnea CT 17 9517 188102
Pedara CT 17 14102 202204
Milo CT 18 1087 203291
Randazzo CT 18 10900 214191
Centuripe EN 18 5470 219661
Trecastagni CT 19 10910 230571
Maniace CT 19 3765 234336
Camporotondo Etneo CT 19 5023 239359
San Pietro Clarenza CT 19 7743 247102

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)
92 Km NE of Vittoria (63339 inhabitants)
93 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
06:37:54		 37.7177 14.9118 29 2019-06-04
09:16:17		 Bollettino Sismico Italiano INGV 68535661
Reviewed
Rev100 		ML 2.3 2018-11-20
06:37:54		 37.717 14.8495 31 2018-11-20
06:43:54		 Sala Sismica INGV-Roma 63225971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-20 06:37:54 ± 0.2
Latitude 37.7177 ± 0.0063
Longitude 14.9118 ± 0.0193
Depth (km) 29 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68535661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1663
Semi-minor axis of confidence ellipse (meter) 591
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 1660.0
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 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.76532
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 63225971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-20 06:43:54

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 68535661
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-14 09:14:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2018-11-20T06:38:20.96 0.6 undecidable manual S 188 84.9483 104 0.6 44
IV.SSY.HHZ. 2018-11-20T06:38:15.32 0.6 undecidable manual S 167 63.6918 109 0.39 48
IV.HAGA.HHZ. 2018-11-20T06:38:12.19 0.6 undecidable manual S 156 52.503 113 0.05 53
IV.HMDC.HHZ. 2018-11-20T06:38:09.55 0.3 undecidable manual P 188 84.9483 104 0.04 75
IV.HLNI.HHZ. 2018-11-20T06:38:09.46 0.6 undecidable manual S 185 41.1255 119 0.07 54
IV.MSRU.HHZ. 2018-11-20T06:38:09.31 0.3 undecidable manual P 41 79.9644 105 0.54 68
IV.MUCR.HHE. 2018-11-20T06:38:08.38 0.6 undecidable manual S 355 36.2415 123 0.09 54
IV.GALF.HHZ. 2018-11-20T06:38:07.62 0.6 undecidable manual S 269 30.3474 129 0.62 47
IV.SSY.HHZ. 2018-11-20T06:38:06.61 0.1 undecidable manual P 167 63.6918 109 0.24 100
IV.AGST.EHZ. 2018-11-20T06:38:05.20 0.3 undecidable manual P 151 58.1973 111 -0.37 73
IV.EPZF.HHZ. 2018-11-20T06:38:04.30 0.3 undecidable manual S 338 12.7761 154 0.29 80
IV.ESML.HHZ. 2018-11-20T06:38:04.12 0.6 undecidable manual S 194 11.3775 156 0.26 54
IV.HAGA.HHZ. 2018-11-20T06:38:04.56 0.3 undecidable manual P 156 52.503 113 -0.2 77
IV.EMCN.HNZ. 2018-11-20T06:38:04.90 0.6 undecidable manual S 53 13.4754 152 0.81 45
IV.AIO.HHZ. 2018-11-20T06:38:03.00 0.3 undecidable manual P 45 39.8268 120 0 82
IV.MUCR.HHE. 2018-11-20T06:38:02.41 0.3 undecidable manual P 355 36.2415 123 -0.13 80
IV.HLNI.HHZ. 2018-11-20T06:38:02.93 0.3 undecidable manual P 185 41.1255 119 -0.24 78
IV.ESLN.HHZ. 2018-11-20T06:38:02.99 0.3 undecidable manual S 116 6.0939 167 -0.42 80
IV.GALF.HHZ. 2018-11-20T06:38:01.57 0.3 undecidable manual P 269 30.3474 129 -0.22 80
IV.EMCN.HNZ. 2018-11-20T06:38:00.41 0.3 undecidable manual P 53 13.4754 152 0.29 81
IV.ESLN.HHZ. 2018-11-20T06:37:59.19 0.3 undecidable manual P 116 6.0939 167 -0.53 77
IV.EPZF.HHZ. 2018-11-20T06:37:59.31 0.3 undecidable manual P 338 12.7761 154 -0.76 70
IV.ESML.HHZ. 2018-11-20T06:37:59.63 0.3 undecidable manual P 194 11.3775 156 -0.35 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.3 0.00109218245 0.24 AML other m 2018-11-20T06:38:03.51
IV.EPZF.HHN. ML:2.6 0.001835 1.7 AML other m 2018-11-20T06:38:05.87
IV.ESLN.HHE. ML:2.2 0.0008684592 0.3424 AML other m 2018-11-20T06:38:05.96
IV.ESML.HHN. ML:2.1 0.0006855 1.12 AML other m 2018-11-20T06:38:06.10
IV.ESML.HHE. ML:2.2 0.000853 1.76 AML other m 2018-11-20T06:38:08.02
IV.GALF.HHE. ML:2.2 0.0005285 0.9 AML other m 2018-11-20T06:38:08.25
IV.GALF.HNE. ML:1.7 0.00017982595000000002 1.6224 AML other m 2018-11-20T06:38:09.85
IV.HLNI.HHN. ML:2.2 0.00038700000000000003 0.26 AML other m 2018-11-20T06:38:10.12
IV.AIO.HHE. ML:2.3 0.0005015 0.34 AML other m 2018-11-20T06:38:10.04
IV.HLNI.HHE. ML:2.1 0.00035350000000000003 0.68 AML other m 2018-11-20T06:38:10.46
IV.GALF.HHN. ML:1.9 0.0002735 1.7 AML other m 2018-11-20T06:38:10.10
IV.AIO.HHN. ML:1.9 0.000199 1.16 AML other m 2018-11-20T06:38:10.39
IV.SSY.HHE. ML:2.8 0.0010105 0.62 AML other m 2018-11-20T06:38:15.61
IV.SSY.HHN. ML:3.0 0.001655 0.84 AML other m 2018-11-20T06:38:19.63
IV.HMDC.HHE. ML:2.5 0.0004055 0.3 AML other m 2018-11-20T06:38:22.27
IV.HMDC.HHN. ML:2.4 0.0003175 0.58 AML other m 2018-11-20T06:38:23.55
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