Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 19-12-2022 and time 17:46:05 (Italy) in region 9 km SE Castel di Iudica (CT)

A magnitude ML 1.8 earthquake occured in region: 9 km SE Castel di Iudica (CT), on

  • 19-12-2022 16:46:05 (UTC)
  • 19-12-2022 17:46:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.4600, 14.7350 at 20 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
Castel di Iudica CT 9 4625 4625
Ramacca CT 9 10894 15519
Catenanuova EN 13 4866 20385
Palagonia CT 15 16608 36993
Raddusa CT 18 3178 40171
Centuripe EN 18 5470 45641
Paternò CT 20 48228 93869

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Catania (314555 inhabitants)
42 Km W of Acireale (52622 inhabitants)
59 Km N of Ragusa (73313 inhabitants)
59 Km N of Vittoria (63339 inhabitants)
60 Km E of Caltanissetta (63360 inhabitants)
61 Km NE of Gela (75827 inhabitants)
66 Km NW of Siracusa (122291 inhabitants)
67 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 2022-12-19
16:46:05		 37.4597 14.7353 20 2024-03-01
15:28:15		 Bollettino Sismico Italiano INGV 113588701
Reviewed
Rev100 		ML 1.7 2022-12-19
16:46:05		 37.4612 14.7282 8 2022-12-19
17:01:49		 Sala Sismica INGV-Roma 112951531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-19 16:46:05 ± 0.21
Latitude 37.4597 ± 0.0072
Longitude 14.7353 ± 0.0136
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 113588701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1099
Semi-minor axis of confidence ellipse (meter) 397
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.64212
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 113588701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-14 09:41:19

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 112951531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-12-19 17:01:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2022-12-19T16:47:22.40 3.0 undecidable manual Pn 4.78 0
IV.MOCO.HNZ. 2022-12-19T16:47:02.40 3.0 undecidable manual Pg 12.56 0
IV.TDS.HHZ. 2022-12-19T16:46:36.76 3.0 undecidable manual Pn 2.87 0
IV.LIBRI.HHN. 2022-12-19T16:46:28.10 0.6 undecidable manual S 14 71.2731 98 0.78 40
IV.MUCR.HHE. 2022-12-19T16:46:27.42 0.6 undecidable manual S 11 65.8896 99 1.54 28
IV.HAVL.HHZ. 2022-12-19T16:46:26.35 0.6 undecidable manual S 148 65.1903 99 0.65 44
IV.HVIT.HHZ. 2022-12-19T16:46:23.48 0.6 undecidable manual S 200 55.1004 101 0.41 49
IV.RAFF.HHZ. 2022-12-19T16:46:21.61 0.3 undecidable manual S 231 42.1245 106 1.92 37
IV.SSY.HHZ. 2022-12-19T16:46:20.94 0.3 undecidable manual S 138 44.8218 104 0.54 70
IV.LIBRI.HHN. 2022-12-19T16:46:18.39 0.3 undecidable manual P 14 71.2731 98 0.22 73
IV.ESPC.HHN. 2022-12-19T16:46:18.69 0.6 undecidable manual S 45 36.4413 109 0.46 48
IV.HVZN.HNZ. 2022-12-19T16:46:17.12 0.6 undecidable manual S 183 31.2465 113 0.17 53
IV.HCRL.HHZ. 2022-12-19T16:46:17.32 0.3 undecidable manual S 127 32.745 111 0.01 81
IV.MSFR.HHZ. 2022-12-19T16:46:17.10 0.3 undecidable manual P 349 64.9905 99 -0.1 74
IV.HAVL.HHZ. 2022-12-19T16:46:17.31 0.3 undecidable manual P 148 65.1903 99 0.07 76
IV.MUCR.HHE. 2022-12-19T16:46:17.93 0.3 undecidable manual P 11 65.8896 99 0.58 67
IV.HVIT.HHZ. 2022-12-19T16:46:15.37 0.3 undecidable manual P 200 55.1004 101 -0.35 71
IV.MMGO.HHZ. 2022-12-19T16:46:14.00 3.0 positive manual P -2.76 0
IV.ESML.HNE. 2022-12-19T16:46:14.37 0.6 undecidable manual S 36 21.6672 124 -0.32 52
IV.RAFF.HHZ. 2022-12-19T16:46:13.29 0.1 undecidable manual P 231 42.1245 106 -0.48 93
IV.SSY.HHZ. 2022-12-19T16:46:13.91 0.1 undecidable manual P 138 44.8218 104 -0.27 100
IV.ENIC.HHE. 2022-12-19T16:46:12.12 0.3 undecidable manual P 53 31.5462 112 -0.11 80
IV.ESPC.HHN. 2022-12-19T16:46:12.51 0.3 undecidable manual P 45 36.4413 109 -0.42 74
IV.ESLN.HHZ. 2022-12-19T16:46:12.65 0.3 undecidable manual P 39 33.3444 111 0.16 79
IV.GALF.HHZ. 2022-12-19T16:46:11.70 0.3 undecidable manual P 332 31.5462 112 -0.53 71
IV.HVZN.HNZ. 2022-12-19T16:46:11.67 0.3 undecidable manual P 183 31.2465 113 -0.51 71
IV.HCRL.HHZ. 2022-12-19T16:46:11.82 0.1 undecidable manual P 127 32.745 111 -0.57 95
IV.ESML.HNE. 2022-12-19T16:46:10.39 0.3 undecidable manual P 36 21.6672 124 -0.49 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HCRL.HHN. ML:1.7 0.0001985 0.12 AML other m 2022-12-19T16:46:17.65
IV.HCRL.HHE. ML:1.8 0.00025 0.42 AML other m 2022-12-19T16:46:17.41
IV.GALF.HHN. ML:1.5 0.00013523270000000002 0.5248 AML other m 2022-12-19T16:46:18.29
IV.SSY.HHE. ML:2.0 0.0002842278 1.5744 AML other m 2022-12-19T16:46:21.37
IV.RAFF.HHE. ML:1.7 0.00014050000000000003 0.22 AML other m 2022-12-19T16:46:21.79
IV.RAFF.HHN. ML:1.7 0.0001605 0.24 AML other m 2022-12-19T16:46:21.81
IV.SSY.HNN. ML:1.7 0.00013605132 0.4224 AML other m 2022-12-19T16:46:23.17
IV.SSY.HHN. ML:2.4 0.00076011335 0.2048 AML other m 2022-12-19T16:46:23.16
IV.SSY.HNE. ML:2.0 0.0002568552 0.192 AML other m 2022-12-19T16:46:23.17
IV.HAVL.HHE. ML:1.4 0.00005180272 0.064 AML other m 2022-12-19T16:46:29.32
IV.GALF.HHE. ML:1.6 0.00016414974999999997 0.4352 AML other m 2022-12-19T16:46:22.76
IV.HAVL.HHN. ML:1.7 0.00009193006500000001 0.3072 AML other m 2022-12-19T16:46:28.83
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