Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-12-2023 and time 20:35:55 (Italy) in region Costa Catanese (Catania)

A magnitude ML 1.6 earthquake occured in region: Costa Catanese (Catania), on

  • 28-12-2023 19:35:55 (UTC)
  • 28-12-2023 20:35:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7960, 15.3210 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Giardini-Naxos ME 6 9415 9415
Taormina ME 7 10960 20375
Castelmola ME 8 1088 21463
Calatabiano CT 9 5308 26771
Letojanni ME 10 2861 29632
Fiumefreddo di Sicilia CT 10 9623 39255
Gaggi ME 12 3184 42439
Mascali CT 12 14282 56721
Gallodoro ME 12 367 57088
Riposto CT 12 14838 71926
Piedimonte Etneo CT 13 3963 75889
Mongiuffi Melia ME 13 600 76489
Forza d'Agrò ME 13 911 77400
Graniti ME 14 1492 78892
Sant'Alessio Siculo ME 14 1554 80446
Giarre CT 14 27659 108105
Roccafiorita ME 16 197 108302
Linguaglossa CT 16 5403 113705
Sant'Alfio CT 17 1582 115287
Limina ME 17 836 116123
Motta Camastra ME 17 845 116968
Santa Teresa di Riva ME 17 9377 126345
Savoca ME 18 1732 128077
Casalvecchio Siculo ME 18 842 128919
Furci Siculo ME 19 3382 132301
Milo CT 20 1087 133388
Castiglione di Sicilia CT 20 3215 136603
Santa Venerina CT 20 8592 145195

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Acireale (52622 inhabitants)
38 Km NE of Catania (314555 inhabitants)
45 Km SW of Reggio di Calabria (183035 inhabitants)
49 Km SW of Messina (238439 inhabitants)
82 Km N of Siracusa (122291 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
Reviewed
Rev100 		ML 1.6 2023-12-28
19:35:55		 37.7958 15.3213 5 2023-12-28
19:42:10		 Sala Sismica INGV-Roma 124329721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-28 19:35:55 ± 0.18
Latitude 37.7958 ± 0.0054
Longitude 15.3213 ± 0.0114
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124329721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 931
Semi-minor axis of confidence ellipse (meter) 402
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 930.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57107
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 124329721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-28 19:42:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2023-12-28T19:36:26.41 3.0 undecidable manual Sn 0.09 0
IV.HAGA.HHE. 2023-12-28T19:36:15.44 0.6 undecidable manual S 195 58.497 50 0.54 41
IV.LIBRI.HNZ. 2023-12-28T19:36:12.55 0.6 undecidable manual S 313 46.9197 50 0.75 38
IV.MUCR.HHZ. 2023-12-28T19:36:12.26 0.3 undecidable manual S 305 47.8188 50 0.22 67
IV.MPNC.HHZ. 2023-12-28T19:36:09.17 0.3 undecidable manual S 4 39.0276 97 0.09 70
IV.HLNI.HHZ. 2023-12-28T19:36:07.24 1.0 positive manual P 219 63.3921 50 -0.19 22
IV.HAGA.HHE. 2023-12-28T19:36:06.59 0.1 undecidable manual P 195 58.497 50 -0.08 91
IV.HCRL.HHE. 2023-12-28T19:36:06.71 0.1 undecidable manual P 204 62.2932 50 -0.55 81
IV.LIBRI.HNZ. 2023-12-28T19:36:04.67 0.1 undecidable manual P 313 46.9197 50 -0.21 90
IV.MUCR.HHZ. 2023-12-28T19:36:04.89 0.1 undecidable manual P 305 47.8188 50 -0.13 92
IV.GALF.HHZ. 2023-12-28T19:36:03.72 3.0 negative manual P -0.03 0
IV.MPNC.HHZ. 2023-12-28T19:36:03.55 0.1 undecidable manual P 4 39.0276 97 0.23 91
IV.ECTS.HHZ. 2023-12-28T19:36:02.48 0.6 undecidable manual S 299 19.9689 104 -0.11 48
IV.ESAL.HHZ. 2023-12-28T19:36:01.70 0.6 undecidable manual S 255 16.9719 106 0.12 49
IV.EPMN.HHZ. 2023-12-28T19:36:00.15 0.6 undecidable manual S 282 12.876 111 -0.09 49
IV.EMNR.HHZ. 2023-12-28T19:36:00.62 0.1 undecidable manual P 275 25.9518 101 -0.13 95
IV.ESAL.HHZ. 2023-12-28T19:35:59.07 0.1 negative manual P 255 16.9719 106 0.08 98
IV.EPOZ.HHZ. 2023-12-28T19:35:59.94 0.1 negative manual P 220 18.0708 105 0.75 81
IV.EMCN.HNZ. 2023-12-28T19:35:59.87 0.1 undecidable manual P 269 25.2525 101 -0.73 81
IV.ECTS.HHZ. 2023-12-28T19:35:59.39 0.1 undecidable manual P 299 19.9689 104 -0.18 95
IV.EFIU.HHZ. 2023-12-28T19:35:59.75 0.6 undecidable manual S 266 9.7791 117 0.51 45
IV.EPMN.HHZ. 2023-12-28T19:35:58.21 0.1 positive manual P 282 12.876 111 0 100
IV.EFIU.HHZ. 2023-12-28T19:35:57.57 0.1 undecidable manual P 266 9.7791 117 -0.06 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPMN.HHE. ML:2.2 0.00223 1.8 AML other m 2023-12-28T19:35:59.06
IV.EPMN.HHN. ML:1.9 0.001158 0.6 AML other m 2023-12-28T19:36:00.03
IV.EPOZ.HHN. ML:1.5 0.0003095 1.52 AML other m 2023-12-28T19:36:04.97
IV.EPOZ.HHE. ML:1.5 0.000308 1.48 AML other m 2023-12-28T19:36:07.78
IV.EPOZ.HNE. ML:1.5 0.000299 1.56 AML other m 2023-12-28T19:36:07.06
IV.EPOZ.HNN. ML:1.6 0.00038500000000000003 0.56 AML other m 2023-12-28T19:36:13.44
IV.MUCR.HHN. ML:1.3 0.00005805 0.36 AML other m 2023-12-28T19:36:15.43
IV.MUCR.HHE. ML:1.3 0.0000536 1.42 AML other m 2023-12-28T19:36:16.09
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