Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 03-12-2020 and time 00:56:45 (Italy) in region 10 km W Zafferana Etnea (CT)

A magnitude ML 1.9 earthquake occured in region: 10 km W Zafferana Etnea (CT), on

  • 02-12-2020 23:56:45 (UTC)
  • 03-12-2020 00:56:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7270, 14.9920 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
Zafferana Etnea CT 10 9517 9517
Milo CT 11 1087 10604
Ragalna CT 12 3924 14528
Nicolosi CT 13 7463 21991
Pedara CT 14 14102 36093
Sant'Alfio CT 14 1582 37675
Santa Venerina CT 14 8592 46267
Biancavilla CT 14 24007 70274
Trecastagni CT 14 10910 81184
Belpasso CT 15 28108 109292
Santa Maria di Licodia CT 15 7641 116933
Bronte CT 16 19172 136105
Adrano CT 16 36122 172227
Viagrande CT 16 8563 180790
Maletto CT 16 3920 184710
Giarre CT 17 27659 212369
San Pietro Clarenza CT 17 7743 220112
Randazzo CT 17 10900 231012
Aci Bonaccorsi CT 18 3524 234536
Camporotondo Etneo CT 18 5023 239559
Aci Sant'Antonio CT 18 17984 257543
Mascalucia CT 18 31958 289501
Tremestieri Etneo CT 18 20589 310090
Mascali CT 18 14282 324372
Paternò CT 18 48228 372600
Linguaglossa CT 19 5403 378003
Piedimonte Etneo CT 19 3963 381966
Riposto CT 19 14838 396804
San Giovanni la Punta CT 19 23060 419864
Aci Catena CT 19 29851 449715
Gravina di Catania CT 19 25838 475553
Moio Alcantara ME 20 717 476270
Acireale CT 20 52622 528892

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Acireale (52622 inhabitants)
26 Km NW of Catania (314555 inhabitants)
71 Km SW of Reggio di Calabria (183035 inhabitants)
72 Km SW of Messina (238439 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
86 Km E of Caltanissetta (63360 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
98 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 1.9 2020-12-02
23:56:45		 37.7268 14.9925 9 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86174761
Reviewed
Rev200 		ML 1.4 2020-12-02
23:56:44		 37.717 14.972 3 2021-01-28
12:12:55		 Sala Operativa INGV_OE (Catania) 85168791
Reviewed
Rev100 		ML 1.8 2020-12-02
23:56:45		 37.7167 14.9745 5 2020-12-03
00:07:13		 Sala Sismica INGV-Roma 85165551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-02 23:56:45 ± 0.09
Latitude 37.7268 ± 0.0054
Longitude 14.9925 ± 0.0068
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 86174761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 569
Semi-minor axis of confidence ellipse (meter) 477
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
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) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.39031
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 8
Type of magnitude ML
Reference to an origin 85165551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-03 00:07:13

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 86174761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 12:12:27

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 85168791
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-03 03:22:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GALF.HHE. 2020-12-02T23:56:58.25 0.6 undecidable manual S 267 37.4292 50 -0.1 50
IV.HLNI.HHE. 2020-12-02T23:56:53.74 0.3 undecidable manual P 194 43.3233 50 -0.01 76
IV.MUCR.HHE. 2020-12-02T23:56:52.80 0.6 undecidable manual P 344 36.5412 50 0.08 50
IV.ESML.HHZ. 2020-12-02T23:56:52.71 0.6 undecidable manual S 219 15.6732 119 1.18 36
IV.AIO.HHE. 2020-12-02T23:56:52.21 0.3 undecidable manual P 38 34.3434 50 -0.16 75
IV.GALF.HHE. 2020-12-02T23:56:52.72 0.3 undecidable manual P 267 37.4292 50 -0.13 75
IV.EPZF.HHE. 2020-12-02T23:56:51.84 0.6 undecidable manual S 312 16.0728 118 0.19 51
IV.ECHR.HHE. 2020-12-02T23:56:50.15 0.6 undecidable manual S 237 8.2806 136 0.66 45
IV.EVRN.HHZ. 2020-12-02T23:56:50.95 0.6 undecidable manual S 108 13.2756 123 0.14 52
IV.ESML.HHZ. 2020-12-02T23:56:49.03 0.3 undecidable manual P 219 15.6732 119 0.12 78
IV.EPOZ.HHE. 2020-12-02T23:56:49.94 0.3 undecidable manual P 109 18.2706 115 0.55 70
IV.ENIC.HHZ. 2020-12-02T23:56:49.99 0.3 undecidable manual S 166 10.878 128 -0.16 78
IV.ECTS.HHZ. 2020-12-02T23:56:49.90 0.6 undecidable manual P 33 20.5683 113 0.09 52
IV.EPZF.HHE. 2020-12-02T23:56:48.89 0.3 undecidable manual P 312 16.0728 118 -0.1 78
IV.EPIT.HHN. 2020-12-02T23:56:48.37 0.3 undecidable manual P 31 10.878 128 0.24 76
IV.EVRN.HHZ. 2020-12-02T23:56:48.64 0.3 undecidable manual P 108 13.2756 123 0.14 78
IV.EMSG.HHZ. 2020-12-02T23:56:48.22 0.3 undecidable manual P 340 11.0778 128 0.07 79
IV.ENIC.HHZ. 2020-12-02T23:56:47.87 0.3 undecidable manual P 166 10.878 128 -0.25 76
IV.EMCN.HHN. 2020-12-02T23:56:47.58 0.3 undecidable manual P 27 7.9809 137 -0.12 79
IV.ECBD.HHN. 2020-12-02T23:56:47.91 0.3 undecidable manual P 54 10.1787 130 -0.1 79
IV.ECHR.HHE. 2020-12-02T23:56:47.45 0.3 undecidable manual P 237 8.2806 136 -0.28 76
IV.ESLN.HHZ. 2020-12-02T23:56:47.77 0.6 undecidable manual S 203 3.996 155 -0.86 42
IV.ESLN.HHZ. 2020-12-02T23:56:46.86 0.1 positive manual P 203 3.996 155 -0.38 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ENIC.HNN. ML:2.0 0.00146246575 1.3952 AML other m 2020-12-02T23:56:47.71
IV.EMSG.HHE. ML:1.8 0.0008610731499999999 0.7296 AML other m 2020-12-02T23:56:48.38
IV.EVRN.HHE. ML:1.7 0.0006288386500000001 0.6528 AML other m 2020-12-02T23:56:48.28
IV.EVRN.HNE. ML:1.8 0.00077737825 0.7936 AML other m 2020-12-02T23:56:48.28
IV.ACATE.HNE. ML:2.6 0.00053543215 1.0368 AML other m 2020-12-02T23:56:49.49
IV.ACATE.EHE. ML:2.4 0.00033582315 1.3568 AML other m 2020-12-02T23:56:49.65
IV.ACATE.EHN. ML:2.6 0.00042867999999999997 1.4976 AML other m 2020-12-02T23:56:49.75
IV.ACATE.HNN. ML:2.7 0.0005630437500000001 1.2288 AML other m 2020-12-02T23:56:49.68
IV.ENIC.HNE. ML:2.0 0.001221584 0.896 AML other m 2020-12-02T23:56:49.54
IV.ENIC.HHE. ML:1.6 0.00051732625 0.4608 AML other m 2020-12-02T23:56:49.92
IV.EVRN.HNN. ML:1.8 0.0007577452500000001 0.2304 AML other m 2020-12-02T23:56:52.49
IV.EVRN.HHN. ML:1.8 0.0006719620499999999 0.1536 AML other m 2020-12-02T23:56:52.81
IV.ESML.HHN. ML:1.5 0.00032182855 0.4992 AML other m 2020-12-02T23:56:53.66
IV.EMSG.HHN. ML:1.8 0.0007875610500000001 0.2176 AML other m 2020-12-02T23:56:53.79
IV.ENIC.HHN. ML:1.6 0.00054290415 0.3584 AML other m 2020-12-02T23:56:54.47
IV.ESML.HHE. ML:1.6 0.00037455065 0.6016 AML other m 2020-12-02T23:56:55.24
IV.SSY.HHN. ML:2.4 0.0005028874999999999 1.4976 AML other m 2020-12-02T23:57:24.53
IV.SSY.HHE. ML:2.1 0.0002210641 1.5232 AML other m 2020-12-02T23:57:24.73
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