Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 04-11-2020 and time 18:19:50 (Italy) in region 10 km SE Bronte (CT)

A magnitude ML 2.1 earthquake occured in region: 10 km SE Bronte (CT), on

  • 04-11-2020 17:19:50 (UTC)
  • 04-11-2020 18:19:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7410, 14.9340 at 9 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
Bronte CT 10 19172 19172
Maletto CT 12 3920 23092
Ragalna CT 12 3924 27016
Adrano CT 12 36122 63138
Biancavilla CT 12 24007 87145
Santa Maria di Licodia CT 14 7641 94786
Randazzo CT 15 10900 105686
Zafferana Etnea CT 16 9517 115203
Nicolosi CT 16 7463 122666
Milo CT 16 1087 123753
Belpasso CT 17 28108 151861
Maniace CT 18 3765 155626
Pedara CT 18 14102 169728
Paternò CT 18 48228 217956
Sant'Alfio CT 19 1582 219538
Trecastagni CT 19 10910 230448
Santa Venerina CT 19 8592 239040
Santa Domenica Vittoria ME 20 980 240020

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NW of Acireale (52622 inhabitants)
30 Km NW of Catania (314555 inhabitants)
74 Km SW of Messina (238439 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
82 Km NW of Siracusa (122291 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
96 Km NE of Gela (75827 inhabitants)
99 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 2.1 2020-11-04
17:19:50		 37.7412 14.9343 9 2021-02-26
14:56:16		 Bollettino Sismico Italiano INGV 86435171
Reviewed
Rev200 		ML 2.0 2020-11-04
17:19:50		 37.74 14.943 7 2021-01-25
04:03:48		 Sala Operativa INGV_OE (Catania) 84452461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-04 17:19:50 ± 0.07
Latitude 37.7412 ± 0.0045
Longitude 14.9343 ± 0.0080
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86435171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 695
Semi-minor axis of confidence ellipse (meter) 448
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 113
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.04137
Epicentral distance of station farthest from the epicenter (degree) 0.79500
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 25
Type of magnitude ML
Reference to an origin 86435171
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-25 04:03:37

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 84452461
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-11-04 18:38:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RAFF.HHZ. 2020-11-04T17:20:05.08 0.3 undecidable manual P 221 76.4679 50 0.76 54
IV.HAVL.HHZ. 2020-11-04T17:20:05.83 0.3 undecidable manual P 169 88.245 50 -0.31 62
IV.SSY.HHZ. 2020-11-04T17:20:02.63 0.3 undecidable manual P 169 65.8896 50 -0.05 68
IV.MPNC.HHZ. 2020-11-04T17:20:01.90 0.3 undecidable manual P 39 57.9975 50 0.43 64
IV.MSFR.HHZ. 2020-11-04T17:19:59.46 0.1 undecidable manual P 317 44.2224 50 0.11 93
IV.ECTS.HHZ. 2020-11-04T17:19:59.73 0.6 undecidable manual S 46 22.6551 112 0.44 45
IV.HLNI.HHZ. 2020-11-04T17:19:59.17 0.1 undecidable manual P 187 43.9227 50 -0.13 93
IV.AIO.HHZ. 2020-11-04T17:19:58.45 0.1 undecidable manual P 46 36.5412 50 0.28 91
IV.GALF.HHZ. 2020-11-04T17:19:57.68 0.1 undecidable manual P 264 32.4453 50 0.15 94
IV.EPIT.HHZ. 2020-11-04T17:19:57.35 0.6 undecidable manual S 54 13.2756 124 0.95 37
IV.NOV.HHZ. 2020-11-04T17:19:57.94 0.3 undecidable manual P 29 36.4413 50 -0.2 69
IV.MUCR.HHZ. 2020-11-04T17:19:57.60 0.1 positive manual P 351 33.9438 50 -0.16 94
IV.ESML.HHZ. 2020-11-04T17:19:56.93 0.6 undecidable manual S 199 14.4744 122 0.18 48
IV.EFIU.HHZ. 2020-11-04T17:19:56.16 0.3 undecidable manual P 77 24.753 110 0.04 73
IV.EMSG.HHZ. 2020-11-04T17:19:55.02 0.6 undecidable manual S 9 8.9799 135 -0.22 48
IV.ECHR.HNZ. 2020-11-04T17:19:55.40 0.6 undecidable manual S 197 6.3936 145 0.74 42
IV.ECTS.HHZ. 2020-11-04T17:19:55.42 0.1 undecidable manual P 46 22.6551 112 -0.3 93
IV.ECPN.HHZ. 2020-11-04T17:19:55.23 0.6 undecidable manual S 86 4.5954 153 0.89 39
IV.EPOZ.HHZ. 2020-11-04T17:19:55.94 0.3 undecidable manual P 109 23.5542 111 0.04 73
IV.EVRN.HHZ. 2020-11-04T17:19:54.47 0.3 undecidable manual P 108 18.5703 116 -0.51 67
IV.ESLN.HHZ. 2020-11-04T17:19:54.68 0.6 undecidable manual S 146 6.3936 145 0.02 51
IV.ENIC.HHZ. 2020-11-04T17:19:54.41 0.1 undecidable manual P 148 14.3745 122 0.17 97
IV.ESML.HHZ. 2020-11-04T17:19:54.16 0.3 undecidable manual P 199 14.4744 122 -0.09 74
IV.ECBD.HHZ. 2020-11-04T17:19:53.86 0.1 undecidable manual P 72 14.0748 123 -0.32 94
IV.EPZF.HHZ. 2020-11-04T17:19:53.56 0.1 positive manual P 324 11.3775 128 -0.2 97
IV.EPIT.HHZ. 2020-11-04T17:19:53.98 0.1 undecidable manual P 54 13.2756 124 -0.07 99
IV.EMCN.HHZ. 2020-11-04T17:19:53.30 0.1 undecidable manual P 57 10.2786 131 -0.28 95
IV.EMSG.HHZ. 2020-11-04T17:19:53.32 0.1 positive manual P 9 8.9799 135 -0.06 100
IV.ECNE.HHZ. 2020-11-04T17:19:53.53 0.3 undecidable manual P 66 6.4935 144 0.47 69
IV.ECPN.HHZ. 2020-11-04T17:19:52.74 0.1 undecidable manual P 86 4.5954 153 -0.12 99
IV.ESLN.HHZ. 2020-11-04T17:19:52.79 0.1 positive manual P 146 6.3936 145 -0.26 96
IV.ECHR.HNZ. 2020-11-04T17:19:52.69 0.1 positive manual P 197 6.3936 145 -0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.6 0.0067223085 0.3584 AML other m 2020-11-04T17:19:55.21
IV.ESLN.HHE. ML:2.1 0.00238656015 0.3456 AML other m 2020-11-04T17:19:55.08
IV.EMSG.HHE. ML:2.3 0.0030627404999999997 0.4608 AML other m 2020-11-04T17:19:56.11
IV.EMSG.HHN. ML:2.5 0.005445 0.4 AML other m 2020-11-04T17:19:56.22
IV.EMCN.HHE. ML:2.3 0.0027557619999999997 0.6016 AML other m 2020-11-04T17:19:56.77
IV.EPZF.HHE. ML:2.1 0.0016402215 0.2816 AML other m 2020-11-04T17:19:57.28
IV.ESML.HHE. ML:2.0 0.0011834050999999998 0.4992 AML other m 2020-11-04T17:19:57.85
IV.EPZF.HHN. ML:2.2 0.0020879965 0.2304 AML other m 2020-11-04T17:19:57.96
IV.EVRN.HNE. ML:2.1 0.0010326779 0.896 AML other m 2020-11-04T17:19:58.89
IV.ENIC.HHN. ML:2.2 0.0016124335 0.32 AML other m 2020-11-04T17:19:58.75
IV.EVRN.HHE. ML:2.0 0.00086727345 0.1792 AML other m 2020-11-04T17:19:59.37
IV.ECTS.HHN. ML:2.0 0.0006170864499999999 0.3456 AML other m 2020-11-04T17:20:00.23
IV.ECTS.HHE. ML:2.0 0.0006360000000000001 0.4 AML other m 2020-11-04T17:20:00.23
IV.EPOZ.HHE. ML:1.8 0.00044403009999999997 0.5888 AML other m 2020-11-04T17:20:01.45
IV.MUCR.HHE. ML:1.6 0.00015645205 0.9216 AML other m 2020-11-04T17:20:03.58
IV.GALF.HNN. ML:1.4 0.00011880211499999999 0.5376 AML other m 2020-11-04T17:20:03.70
IV.NOV.HHN. ML:2.0 0.0003677068 0.7808 AML other m 2020-11-04T17:20:04.47
IV.NOV.HHE. ML:2.2 0.0005636002 0.7936 AML other m 2020-11-04T17:20:04.50
IV.AIO.HHE. ML:1.7 0.0001760813 0.2688 AML other m 2020-11-04T17:20:04.94
IV.HLNI.HHN. ML:1.3 0.000060170305 0.2304 AML other m 2020-11-04T17:20:07.05
IV.HLNI.HHE. ML:1.4 0.0000846 0.52 AML other m 2020-11-04T17:20:10.07
IV.MPNC.HHE. ML:1.9 0.00019138505 0.5376 AML other m 2020-11-04T17:20:11.80
IV.SSY.HHE. ML:2.2 0.0002552593 0.8832 AML other m 2020-11-04T17:20:12.82
IV.HAVL.HHE. ML:2.1 0.00014208529999999999 0.4992 AML other m 2020-11-04T17:20:19.42
IV.HAVL.HHN. ML:2.4 0.00027182665000000003 0.2688 AML other m 2020-11-04T17:20:19.50
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