Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 06-12-2020 and time 23:25:19 (UTC) in region 5 km E Bronte (CT)

A magnitude ML 2.2 earthquake occured in region: 5 km E Bronte (CT), on

  • 06-12-2020 23:25:19 (UTC)
  • 07-12-2020 00:25:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7710, 14.8820 at 28 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 5 19172 19172
Maletto CT 7 3920 23092
Maniace CT 12 3765 26857
Adrano CT 13 36122 62979
Randazzo CT 13 10900 73879
Biancavilla CT 14 24007 97886
Ragalna CT 16 3924 101810
Cesarò ME 17 2439 104249
Santa Maria di Licodia CT 17 7641 111890
Santa Domenica Vittoria ME 18 980 112870
San Teodoro ME 18 1403 114273

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Acireale (52622 inhabitants)
35 Km NW of Catania (314555 inhabitants)
76 Km SW of Messina (238439 inhabitants)
77 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
87 Km NW of Siracusa (122291 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
96 Km NE of Gela (75827 inhabitants)
96 Km NE 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 2020-12-06
23:25:19		 37.7712 14.8823 28 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87307741
Reviewed
Rev200 		ML 1.8 2020-12-06
23:25:19		 37.776 14.894 23 2021-02-19
23:35:04		 Sala Operativa INGV_OE (Catania) 85254881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-06 23:25:19 ± 0.16
Latitude 37.7712 ± 0.0072
Longitude 14.8823 ± 0.0137
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87307741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 979
Semi-minor axis of confidence ellipse (meter) 831
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.81568
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 85254881
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-07 00:14:45

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 87307741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-19 23:33:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2020-12-06T23:25:47.01 0.6 undecidable manual S 186 90.5427 102 0.43 42
IV.HAGA.HHZ. 2020-12-06T23:25:38.13 0.6 undecidable manual S 156 58.9965 110 -0.34 44
IV.HMDC.HHZ. 2020-12-06T23:25:35.51 0.3 undecidable manual P 186 90.5427 102 0.38 63
IV.HLNI.HHZ. 2020-12-06T23:25:35.39 0.6 undecidable manual S 181 46.9197 115 -0.09 47
IV.MUCR.HHZ. 2020-12-06T23:25:31.22 0.6 undecidable manual S 359 30.1476 128 -0.43 47
IV.HAGA.HHZ. 2020-12-06T23:25:30.04 0.3 undecidable manual P 156 58.9965 110 -0.41 65
IV.ECBD.HHN. 2020-12-06T23:25:30.08 0.6 undecidable manual S 87 17.9709 144 0.73 43
IV.ECTS.HHZ. 2020-12-06T23:25:30.63 0.6 undecidable manual S 59 24.2535 135 0.18 49
IV.EPIT.HHN. 2020-12-06T23:25:29.53 0.6 undecidable manual S 74 15.9729 147 0.49 47
IV.HLNI.HHZ. 2020-12-06T23:25:28.38 0.3 undecidable manual P 181 46.9197 115 -0.34 68
IV.EPZF.HHZ. 2020-12-06T23:25:28.19 0.6 undecidable manual S 339 6.2937 166 0.17 51
IV.EMSG.HHZ. 2020-12-06T23:25:27.76 0.6 undecidable manual S 47 8.0808 162 -0.39 48
IV.MUCR.HHZ. 2020-12-06T23:25:26.61 0.3 undecidable manual P 359 30.1476 128 0.1 73
IV.GALF.HHZ. 2020-12-06T23:25:26.73 0.3 undecidable manual P 256 28.5492 130 0.42 69
IV.ESML.HHZ. 2020-12-06T23:25:25.00 0.3 undecidable manual P 181 16.9719 145 -0.1 75
IV.ENIC.HHE. 2020-12-06T23:25:25.93 0.3 undecidable manual P 142 19.7691 141 0.58 68
IV.EMCN.HHZ. 2020-12-06T23:25:25.07 0.3 undecidable manual P 80 13.4754 152 0.26 74
IV.EPIT.HHN. 2020-12-06T23:25:25.00 0.3 undecidable manual P 74 15.9729 147 0 77
IV.EVRN.HHZ. 2020-12-06T23:25:25.40 0.3 undecidable manual P 112 24.0537 135 -0.39 70
IV.ECBD.HHN. 2020-12-06T23:25:25.35 0.1 undecidable manual P 87 17.9709 144 0.17 99
IV.ECTS.HHZ. 2020-12-06T23:25:25.67 0.1 undecidable manual P 59 24.2535 135 -0.15 99
IV.EPZF.HHZ. 2020-12-06T23:25:24.11 0.1 positive manual P 339 6.2937 166 -0.3 99
IV.ECHR.HHE. 2020-12-06T23:25:24.50 0.3 undecidable manual P 164 9.7791 159 -0.07 77
IV.ESLN.HHZ. 2020-12-06T23:25:24.63 0.3 undecidable manual P 137 11.7771 155 -0.06 77
IV.EMSG.HHZ. 2020-12-06T23:25:24.25 0.1 positive manual P 47 8.0808 162 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.5 0.00168 0.52 AML other m 2020-12-06T23:25:28.93
IV.EPZF.HHN. ML:2.1 0.000736 1.3 AML other m 2020-12-06T23:25:29.29
IV.EMSG.HHN. ML:2.1 0.0006599999999999999 0.92 AML other m 2020-12-06T23:25:29.02
IV.EMCN.HNN. ML:2.4 0.0012900000000000001 0.74 AML other m 2020-12-06T23:25:29.94
IV.EMCN.HHN. ML:2.4 0.001335 0.74 AML other m 2020-12-06T23:25:29.94
IV.EMCN.HNE. ML:2.4 0.001267 0.84 AML other m 2020-12-06T23:25:30.55
IV.EMCN.HHE. ML:2.4 0.0012050000000000001 0.82 AML other m 2020-12-06T23:25:30.54
IV.EMSG.HHE. ML:2.1 0.0007025 1.12 AML other m 2020-12-06T23:25:32.60
IV.EVRN.HNN. ML:2.0 0.000397 0.82 AML other m 2020-12-06T23:25:33.61
IV.EVRN.HHN. ML:2.0 0.00039400000000000004 0.82 AML other m 2020-12-06T23:25:33.61
IV.GALF.HHE. ML:2.1 0.0004875 0.58 AML other m 2020-12-06T23:25:33.56
IV.GALF.HHN. ML:2.2 0.000619 1.58 AML other m 2020-12-06T23:25:33.05
IV.EVRN.HNE. ML:2.0 0.00041749999999999996 0.96 AML other m 2020-12-06T23:25:37.18
IV.EVRN.HHE. ML:2.0 0.0004505 1.2 AML other m 2020-12-06T23:25:37.07
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