Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 12-12-2022 and time 04:30:13 (Italy) in region 9 km N Ragalna (CT)

A magnitude ML 1.6 earthquake occured in region: 9 km N Ragalna (CT), on

  • 12-12-2022 03:30:13 (UTC)
  • 12-12-2022 04:30:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7160, 14.9470 at 11 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
Ragalna CT 9 3924 3924
Biancavilla CT 11 24007 27931
Adrano CT 12 36122 64053
Santa Maria di Licodia CT 12 7641 71694
Bronte CT 13 19172 90866
Nicolosi CT 13 7463 98329
Belpasso CT 14 28108 126437
Zafferana Etnea CT 14 9517 135954
Maletto CT 15 3920 139874
Pedara CT 15 14102 153976
Milo CT 15 1087 155063
Paternò CT 16 48228 203291
Trecastagni CT 16 10910 214201
Camporotondo Etneo CT 17 5023 219224
San Pietro Clarenza CT 17 7743 226967
Santa Venerina CT 17 8592 235559
Viagrande CT 18 8563 244122
Sant'Alfio CT 18 1582 245704
Randazzo CT 18 10900 256604
Mascalucia CT 18 31958 288562
Tremestieri Etneo CT 19 20589 309151
Aci Bonaccorsi CT 19 3524 312675
Aci Sant'Antonio CT 20 17984 330659
Gravina di Catania CT 20 25838 356497

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
76 Km SW of Messina (238439 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
90 Km N of Ragusa (73313 inhabitants)
93 Km NE of Vittoria (63339 inhabitants)
95 Km NE of Gela (75827 inhabitants)
97 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 1.6 2022-12-12
03:30:13		 37.7155 14.9468 11 2024-03-01
15:28:27		 Bollettino Sismico Italiano INGV 118750261
Reviewed
Rev200 		ML 1.4 2022-12-12
03:30:13		 37.727 14.961 9 2023-06-27
10:07:34		 Sala Operativa INGV_OE (Catania) 112749381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-12 03:30:13 ± 0.13
Latitude 37.7155 ± 0.0054
Longitude 14.9468 ± 0.0068
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118750261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 569
Semi-minor axis of confidence ellipse (meter) 566
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 337
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) 64
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.21044
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 118750261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-27 10:05:16

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 112749381
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2022-12-12 03:58:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESCV.HHN. 2022-12-12T03:30:19.94 0.6 undecidable manual S 287 12.0768 131 0.66 42
IV.EMSG.HHZ. 2022-12-12T03:30:19.30 0.6 undecidable manual S 1 11.6772 132 0.12 49
IV.EPMN.HHZ. 2022-12-12T03:30:18.81 0.3 undecidable manual P 60 23.3544 50 0.01 73
IV.ESVO.HHE. 2022-12-12T03:30:18.31 0.6 undecidable manual S 0 6.3936 149 0.31 47
IV.EMPL.HHZ. 2022-12-12T03:30:18.01 0.6 undecidable manual S 153 4.4955 157 0.3 48
IV.ECHR.HHE. 2022-12-12T03:30:18.10 0.6 undecidable manual S 223 4.3956 157 0.41 46
IV.ESAL.HHN. 2022-12-12T03:30:18.01 0.3 undecidable manual P 75 17.0718 122 0.28 70
IV.EVRN.HHZ. 2022-12-12T03:30:17.66 0.3 undecidable manual P 100 16.872 122 -0.04 74
IV.ECZM.HHN. 2022-12-12T03:30:17.17 0.6 undecidable manual S 295 4.0959 159 -0.48 46
IV.EPZF.HHN. 2022-12-12T03:30:17.24 0.3 undecidable manual P 327 14.3745 126 -0.05 74
IV.ESML.HHZ. 2022-12-12T03:30:17.26 0.3 undecidable manual P 209 12.2766 131 0.29 71
IV.EPIT.HHE. 2022-12-12T03:30:17.35 0.3 undecidable manual P 42 14.3745 126 0.06 74
IV.ESLN.HHZ. 2022-12-12T03:30:17.34 0.6 undecidable manual S 135 3.4965 162 -0.23 48
IV.ECPN.HHZ. 2022-12-12T03:30:16.11 0.3 undecidable manual P 48 4.6953 156 0.08 75
IV.EMSG.HHZ. 2022-12-12T03:30:16.97 0.3 undecidable manual P 1 11.6772 132 0.1 74
IV.ENIC.HHN. 2022-12-12T03:30:16.94 0.3 undecidable manual P 145 11.3775 133 0.11 73
IV.ESVO.HHE. 2022-12-12T03:30:16.04 0.1 undecidable manual P 0 6.3936 149 -0.15 98
IV.ESCV.HHN. 2022-12-12T03:30:16.80 0.3 undecidable manual P 287 12.0768 131 -0.13 73
IV.ESLN.HHZ. 2022-12-12T03:30:15.72 0.1 undecidable manual P 135 3.4965 162 -0.22 97
IV.ECZM.HHN. 2022-12-12T03:30:15.55 0.1 undecidable manual P 295 4.0959 159 -0.44 92
IV.EMPL.HHZ. 2022-12-12T03:30:15.87 0.1 undecidable manual P 153 4.4955 157 -0.15 98
IV.ECHR.HHE. 2022-12-12T03:30:15.95 0.1 undecidable manual P 223 4.3956 157 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESCV.HHN. ML:1.5 0.00036690035 0.2 AML other m 2022-12-12T03:30:22.05
IV.ESCV.HHE. ML:1.7 0.00050994905 0.2 AML other m 2022-12-12T03:30:21.11
IV.EMSG.HHE. ML:1.8 0.00074517855 0.56 AML other m 2022-12-12T03:30:22.74
IV.EMSG.HHN. ML:2.0 0.0010139639 0.4992 AML other m 2022-12-12T03:30:20.10
IV.EPZF.HHN. ML:1.4 0.000232354 0.4608 AML other m 2022-12-12T03:30:21.41
IV.EPZF.HHE. ML:1.4 0.00021947275 0.8192 AML other m 2022-12-12T03:30:28.80
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