Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 13-01-2023 and time 02:35:03 (UTC) in region 9 km S Randazzo (CT)

A magnitude ML 1.5 earthquake occured in region: 9 km S Randazzo (CT), on

  • 13-01-2023 02:35:03 (UTC)
  • 13-01-2023 03:35:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8020, 14.9650 at 28 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
Randazzo CT 9 10900 10900
Maletto CT 9 3920 14820
Bronte CT 12 19172 33992
Santa Domenica Vittoria ME 13 980 34972
Moio Alcantara ME 13 717 35689
Roccella Valdemone ME 15 666 36355
Malvagna ME 15 733 37088
Maniace CT 15 3765 40853
Milo CT 16 1087 41940
Linguaglossa CT 16 5403 47343
Castiglione di Sicilia CT 17 3215 50558
Sant'Alfio CT 17 1582 52140
Zafferana Etnea CT 17 9517 61657
Francavilla di Sicilia ME 19 3945 65602
Piedimonte Etneo CT 19 3963 69565
Ragalna CT 19 3924 73489
Adrano CT 19 36122 109611
Biancavilla CT 20 24007 133618
Santa Venerina CT 20 8592 142210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Acireale (52622 inhabitants)
35 Km N of Catania (314555 inhabitants)
68 Km SW of Messina (238439 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
87 Km E of Caltanissetta (63360 inhabitants)
87 Km NW of Siracusa (122291 inhabitants)
100 Km N of Ragusa (73313 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 1.5 2023-01-13
02:35:03		 37.8018 14.9648 28 2024-03-01
17:17:58		 Bollettino Sismico Italiano INGV 115106551
Reviewed
Rev100 		ML 1.6 2023-01-13
02:35:01		 37.7637 14.9412 34 2023-01-13
03:45:46		 Sala Sismica INGV-Roma 113507581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-13 02:35:03 ± 0.23
Latitude 37.8018 ± 0.0072
Longitude 14.9648 ± 0.0102
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 115106551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 903
Semi-minor axis of confidence ellipse (meter) 260
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 900.0
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 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 113507581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-13 03:45:46

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 115106551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-03-08 11:43:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LIBRI.HNZ. 2023-01-13T02:35:15.37 0.3 undecidable manual S 354 31.4463 126 -0.25 69
IV.AIO.HHZ. 2023-01-13T02:35:15.38 0.3 undecidable manual S 51 30.0477 127 0.05 72
IV.MUCR.HHE. 2023-01-13T02:35:14.82 0.3 undecidable manual S 343 27.9498 130 -0.06 72
IV.EPMN.HHZ. 2023-01-13T02:35:13.35 0.3 undecidable manual S 84 18.7701 142 0.18 72
IV.ESCV.HHZ. 2023-01-13T02:35:13.00 0.3 undecidable manual S 245 14.4744 149 0.47 68
IV.EPZF.HHZ. 2023-01-13T02:35:12.05 0.3 undecidable manual S 285 9.7791 158 0.08 75
IV.ECTS.HHZ. 2023-01-13T02:35:12.67 0.3 undecidable manual S 57 16.2726 146 -0.12 73
IV.EPIT.HHZ. 2023-01-13T02:35:12.58 0.3 undecidable manual S 83 8.0808 162 0.76 63
IV.ESPC.HHZ. 2023-01-13T02:35:11.66 0.3 undecidable manual S 156 13.2756 151 -0.71 61
IV.GALF.HHZ. 2023-01-13T02:35:11.46 0.6 undecidable manual P 254 36.3414 122 0.43 44
IV.MSFR.HHZ. 2023-01-13T02:35:11.90 0.6 undecidable manual P 308 41.625 118 0.17 46
IV.EMSG.HHZ. 2023-01-13T02:35:11.47 0.1 undecidable manual S 328 2.4975 174 -0.04 100
IV.AIO.HHZ. 2023-01-13T02:35:10.32 0.6 undecidable manual P 51 30.0477 127 0.1 47
IV.LIBRI.HNZ. 2023-01-13T02:35:10.45 0.6 undecidable manual P 354 31.4463 126 0.06 48
IV.EPOZ.HHZ. 2023-01-13T02:35:10.14 0.3 undecidable manual P 126 24.3534 134 0.58 63
IV.ESML.HNZ. 2023-01-13T02:35:09.78 0.3 undecidable manual P 200 21.7671 138 0.51 66
IV.MUCR.HHE. 2023-01-13T02:35:09.81 0.6 undecidable manual P 343 27.9498 130 -0.16 47
IV.ENIC.HHZ. 2023-01-13T02:35:08.62 0.6 undecidable manual P 165 19.5693 141 -0.44 45
IV.EMNR.HHZ. 2023-01-13T02:35:08.14 0.6 undecidable manual P 73 5.5944 167 0.04 50
IV.EVRN.HHZ. 2023-01-13T02:35:08.91 0.6 undecidable manual P 130 19.4694 141 -0.14 48
IV.ECTS.HHZ. 2023-01-13T02:35:08.31 1.0 undecidable manual P 57 16.2726 146 -0.45 23
IV.EPMN.HHZ. 2023-01-13T02:35:08.86 0.6 undecidable manual P 84 18.7701 142 -0.12 49
IV.ESCV.HHZ. 2023-01-13T02:35:08.34 0.6 undecidable manual P 245 14.4744 149 -0.27 47
IV.EPIT.HHZ. 2023-01-13T02:35:08.53 0.6 undecidable manual P 83 8.0808 162 0.33 47
IV.EMSG.HHZ. 2023-01-13T02:35:07.82 0.3 undecidable manual P 328 2.4975 174 -0.2 73
IV.ESPC.HHZ. 2023-01-13T02:35:07.90 0.1 undecidable manual P 156 13.2756 151 -0.62 87
IV.EPZF.HHZ. 2023-01-13T02:35:07.97 0.6 undecidable manual P 285 9.7791 158 -0.32 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ECTS.HHE. ML:1.5 0.000143491 0.2 AML other m 2023-01-13T02:35:13.17
IV.ECTS.HHN. ML:1.3 0.0001051888 0.16 AML other m 2023-01-13T02:35:13.47
IV.EMSG.HHN. ML:1.6 0.000214049745 0.2592 AML other m 2023-01-13T02:35:15.17
IV.EMSG.HHE. ML:1.5 0.00018395787150000001 0.16 AML other m 2023-01-13T02:35:13.45
IV.EPZF.HHN. ML:1.5 0.00015954199999999998 0.28 AML other m 2023-01-13T02:35:12.47
IV.EPZF.HHE. ML:1.9 0.00047019069999999996 0.3392 AML other m 2023-01-13T02:35:12.48
IV.EPIT.HHN. ML:1.7 0.00024810683 0.24 AML other m 2023-01-13T02:35:13.21
IV.EPIT.HHE. ML:1.6 0.000228765 0.3008 AML other m 2023-01-13T02:35:14.50
IV.AIO.HHN. ML:0.8 0.000023094254500000002 0.1792 AML other m 2023-01-13T02:35:16.12
IV.AIO.HHE. ML:1.0 0.000035616145 0.1792 AML other m 2023-01-13T02:35:16.11
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