Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 03-12-2020 and time 04:10:40 (Italy) in region 10 km W Zafferana Etnea (CT)

A magnitude ML 1.8 earthquake occured in region: 10 km W Zafferana Etnea (CT), on

  • 03-12-2020 03:10:40 (UTC)
  • 03-12-2020 04:10:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7370, 14.9980 at 4 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 13 3924 14528
Sant'Alfio CT 13 1582 16110
Santa Venerina CT 14 8592 24702
Nicolosi CT 14 7463 32165
Pedara CT 14 14102 46267
Trecastagni CT 15 10910 57177
Biancavilla CT 15 24007 81184
Bronte CT 16 19172 100356
Maletto CT 16 3920 104276
Belpasso CT 16 28108 132384
Randazzo CT 16 10900 143284
Viagrande CT 17 8563 151847
Santa Maria di Licodia CT 17 7641 159488
Giarre CT 17 27659 187147
Adrano CT 17 36122 223269
Linguaglossa CT 17 5403 228672
Mascali CT 18 14282 242954
Piedimonte Etneo CT 18 3963 246917
Aci Bonaccorsi CT 18 3524 250441
Riposto CT 18 14838 265279
Aci Sant'Antonio CT 18 17984 283263
San Pietro Clarenza CT 18 7743 291006
Moio Alcantara ME 19 717 291723
Mascalucia CT 19 31958 323681
Camporotondo Etneo CT 19 5023 328704
Tremestieri Etneo CT 19 20589 349293
Fiumefreddo di Sicilia CT 20 9623 358916
Aci Catena CT 20 29851 388767
Paternò CT 20 48228 436995
San Giovanni la Punta CT 20 23060 460055
Castiglione di Sicilia CT 20 3215 463270

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
71 Km SW of Messina (238439 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
87 Km E of Caltanissetta (63360 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
97 Km NE of Vittoria (63339 inhabitants)
100 Km NE of Gela (75827 inhabitants)
100 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 1.8 2020-12-03
03:10:40		 37.7373 14.9978 4 2021-02-26
14:56:16		 Bollettino Sismico Italiano INGV 86449231
Reviewed
Rev200 		ML 1.9 2020-12-03
03:10:39		 37.737 14.991 2 2021-02-26
14:18:42		 Sala Operativa INGV_OE (Catania) 85168621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-03 03:10:40 ± 0.1
Latitude 37.7373 ± 0.0036
Longitude 14.9978 ± 0.0057
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86449231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 486
Semi-minor axis of confidence ellipse (meter) 111
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 126
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
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) 0.01079
Epicentral distance of station farthest from the epicenter (degree) 0.40110
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 86449231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 10:46:57

ML:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 85168621
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-03 03:17:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHE. 2020-12-03T03:10:48.63 0.3 undecidable manual P 194 44.5221 95 -0.53 63
IV.GALF.HHZ. 2020-12-03T03:10:48.07 0.3 undecidable manual P 266 37.9287 96 0.22 69
IV.MUCR.HHZ. 2020-12-03T03:10:47.23 0.3 undecidable manual P 342 35.6421 96 -0.15 70
IV.AIO.HHZ. 2020-12-03T03:10:47.08 0.3 undecidable manual P 38 33.1446 96 0.19 70
IV.EVRN.HHZ. 2020-12-03T03:10:45.17 0.6 undecidable manual S 114 13.1757 106 0.19 48
IV.EPIT.HHZ. 2020-12-03T03:10:44.36 0.6 undecidable manual S 32 9.6792 111 0.55 45
IV.EPOZ.HHZ. 2020-12-03T03:10:44.19 0.3 undecidable manual P 113 18.2706 102 0.25 71
IV.EMSG.HHZ. 2020-12-03T03:10:44.41 0.6 undecidable manual S 336 10.1787 110 0.44 46
IV.ECTS.HHZ. 2020-12-03T03:10:44.02 0.3 undecidable manual P 34 19.3695 101 -0.13 72
IV.ECHR.HNZ. 2020-12-03T03:10:44.78 0.6 undecidable manual S 233 9.3795 112 1.08 35
IV.ECBD.HHZ. 2020-12-03T03:10:44.04 0.6 undecidable manual S 59 9.0798 112 0.41 46
IV.EFIU.HHZ. 2020-12-03T03:10:44.56 0.1 undecidable manual P 73 19.5693 101 0.37 92
IV.ESML.HHZ. 2020-12-03T03:10:43.99 0.1 negative manual P 218 16.872 102 0.33 93
IV.EPZF.HHZ. 2020-12-03T03:10:43.24 0.1 positive manual P 308 15.6732 103 -0.19 96
IV.EPIT.HHZ. 2020-12-03T03:10:42.25 0.1 undecidable manual P 32 9.6792 111 -0.04 100
IV.EVRN.HHZ. 2020-12-03T03:10:42.71 0.1 positive manual P 114 13.1757 106 -0.25 95
IV.ECBD.HHZ. 2020-12-03T03:10:42.00 0.1 negative manual P 59 9.0798 112 -0.18 97
IV.EMCN.HNZ. 2020-12-03T03:10:42.81 0.6 undecidable manual S 28 6.7932 119 -0.07 50
IV.EMSG.HHZ. 2020-12-03T03:10:42.21 0.1 positive manual P 336 10.1787 110 -0.17 97
IV.ECHR.HNZ. 2020-12-03T03:10:42.36 0.1 positive manual P 233 9.3795 112 0.13 98
IV.ESLN.HHZ. 2020-12-03T03:10:42.45 0.6 undecidable manual S 203 5.2947 125 0 51
IV.ENIC.HHZ. 2020-12-03T03:10:42.60 0.3 undecidable manual P 170 11.9769 107 -0.12 74
IV.EMCN.HNZ. 2020-12-03T03:10:41.43 0.1 undecidable manual P 28 6.7932 119 -0.32 95
IV.ECNE.HHZ. 2020-12-03T03:10:41.11 0.3 undecidable manual P 6 3.0969 140 -0.07 75
IV.ECPN.HHZ. 2020-12-03T03:10:41.60 0.3 undecidable manual S 305 1.1988 162 0.03 76
IV.ESLN.HHZ. 2020-12-03T03:10:41.19 0.1 positive manual P 203 5.2947 125 -0.31 95
IV.ECPN.HHZ. 2020-12-03T03:10:40.72 0.1 undecidable manual P 305 1.1988 162 -0.27 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EVRN.HNN. ML:1.8 0.00093063345 0.2688 AML other m 2020-12-03T03:10:45.31
IV.EVRN.HHE. ML:1.9 0.00097536135 0.2592 AML other m 2020-12-03T03:10:45.33
IV.EVRN.HNE. ML:1.8 0.00085553045 0.7008 AML other m 2020-12-03T03:10:45.82
IV.ENIC.HNE. ML:2.0 0.0013740290000000001 0.8992 AML other m 2020-12-03T03:10:45.38
IV.ENIC.HHE. ML:2.0 0.0013874724999999998 0.92 AML other m 2020-12-03T03:10:45.83
IV.EVRN.HHN. ML:1.8 0.0008198550499999999 0.4192 AML other m 2020-12-03T03:10:45.84
IV.EPZF.HHN. ML:1.9 0.0007995879 0.8608 AML other m 2020-12-03T03:10:46.86
IV.EPZF.HHE. ML:1.8 0.0007242463999999999 0.4 AML other m 2020-12-03T03:10:47.17
IV.ECTS.HHN. ML:1.4 0.0002221465 0.6 AML other m 2020-12-03T03:10:47.56
IV.ECTS.HHE. ML:1.5 0.00026785825 0.28 AML other m 2020-12-03T03:10:47.79
IV.MUCR.HHE. ML:1.6 0.00017050000000000002 0.46 AML other m 2020-12-03T03:10:53.47
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