Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 25-04-2023 and time 22:12:15 (UTC) in region 4 km NW Milo (CT)

A magnitude ML 1.4 earthquake occured in region: 4 km NW Milo (CT), on

  • 25-04-2023 22:12:15 (UTC)
  • 26-04-2023 00:12:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7460, 15.0860 at 10 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
Milo CT 4 1087 1087
Sant'Alfio CT 5 1582 2669
Zafferana Etnea CT 6 9517 12186
Santa Venerina CT 8 8592 20778
Giarre CT 9 27659 48437
Mascali CT 10 14282 62719
Riposto CT 11 14838 77557
Piedimonte Etneo CT 11 3963 81520
Linguaglossa CT 12 5403 86923
Fiumefreddo di Sicilia CT 12 9623 96546
Trecastagni CT 14 10910 107456
Pedara CT 14 14102 121558
Viagrande CT 15 8563 130121
Calatabiano CT 15 5308 135429
Nicolosi CT 15 7463 142892
Castiglione di Sicilia CT 16 3215 146107
Aci Sant'Antonio CT 16 17984 164091
Acireale CT 16 52622 216713
Aci Bonaccorsi CT 17 3524 220237
Aci Catena CT 17 29851 250088
Moio Alcantara ME 17 717 250805
Gaggi ME 18 3184 253989
Francavilla di Sicilia ME 18 3945 257934
Ragalna CT 18 3924 261858
Motta Camastra ME 18 845 262703
San Giovanni la Punta CT 19 23060 285763
Valverde CT 19 7840 293603
Tremestieri Etneo CT 19 20589 314192
Randazzo CT 19 10900 325092
Mascalucia CT 19 31958 357050
Malvagna ME 20 733 357783
Belpasso CT 20 28108 385891
Giardini-Naxos ME 20 9415 395306
San Pietro Clarenza CT 20 7743 403049

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NW of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
64 Km SW of Reggio di Calabria (183035 inhabitants)
65 Km SW of Messina (238439 inhabitants)
78 Km N of Siracusa (122291 inhabitants)
94 Km E of Caltanissetta (63360 inhabitants)
96 Km NE 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 1.4 2023-04-25
22:12:15		 37.7463 15.0857 10 2024-03-01
17:18:20		 Bollettino Sismico Italiano INGV 124950031
Reviewed
Rev200 		ML 1.2 2023-04-25
22:12:15		 37.744 15.07 5 2024-01-30
13:42:25		 Sala Operativa INGV_OE (Catania) 116751941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-25 22:12:15 ± 0.17
Latitude 37.7463 ± 0.0054
Longitude 15.0857 ± 0.0091
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124950031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 595
Semi-minor axis of confidence ellipse (meter) 492
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.01169
Epicentral distance of station farthest from the epicenter (degree) 0.25271
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 116751941
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-04-25 22:17:36

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 124950031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-30 13:42:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AIO.HHZ. 2023-04-25T22:12:21.42 0.3 undecidable manual P 27 28.0497 50 -0.07 72
IV.ECTS.HHZ. 2023-04-25T22:12:21.90 0.6 undecidable manual S 12 15.3735 122 0.03 50
IV.EPMN.HHZ. 2023-04-25T22:12:21.13 0.6 undecidable manual S 44 11.4774 130 0.35 47
IV.EVRN.HHZ. 2023-04-25T22:12:20.40 0.6 undecidable manual S 145 7.6812 142 0.53 45
IV.EPIT.HHZ. 2023-04-25T22:12:20.67 0.6 undecidable manual S 341 7.6812 142 0.82 40
IV.EPOZ.HHZ. 2023-04-25T22:12:19.20 0.1 undecidable manual P 132 12.2766 128 0.51 90
IV.EMCN.HHN. 2023-04-25T22:12:19.95 0.6 undecidable manual S 317 6.7932 145 0.28 48
IV.EMNR.HHZ. 2023-04-25T22:12:19.80 0.6 undecidable manual S 326 9.3795 136 -0.46 46
IV.EMSG.HHZ. 2023-04-25T22:12:19.45 0.3 undecidable manual P 305 14.4744 124 0.39 69
IV.ESAL.HHZ. 2023-04-25T22:12:19.14 0.6 undecidable manual S 77 4.3956 156 -0.12 49
IV.ECTS.HHZ. 2023-04-25T22:12:19.00 0.3 undecidable manual P 12 15.3735 122 -0.21 72
IV.ESPC.HHN. 2023-04-25T22:12:19.71 0.6 undecidable manual S 221 7.881 141 -0.19 48
IV.EPMN.HHZ. 2023-04-25T22:12:18.34 0.1 negative manual P 44 11.4774 130 -0.24 95
IV.EFIU.HHZ. 2023-04-25T22:12:18.66 0.1 negative manual P 66 11.9769 129 0.01 100
IV.EVRN.HHZ. 2023-04-25T22:12:18.09 0.1 positive manual P 145 7.6812 142 0.04 100
IV.ECBD.HHN. 2023-04-25T22:12:18.92 0.6 undecidable manual S 1 3.7962 159 -0.25 48
IV.EPIT.HHZ. 2023-04-25T22:12:18.21 0.1 positive manual P 341 7.6812 142 0.17 97
IV.EMNR.HHZ. 2023-04-25T22:12:18.57 0.1 undecidable manual P 326 9.3795 136 0.29 95
IV.ECBD.HHN. 2023-04-25T22:12:17.34 0.1 undecidable manual P 1 3.7962 159 -0.31 95
IV.EMFO.HHE. 2023-04-25T22:12:17.12 0.1 undecidable manual P 162 1.2987 173 -0.41 94
IV.ESAL.HHZ. 2023-04-25T22:12:17.43 0.1 negative manual P 77 4.3956 156 -0.27 96
IV.ESPC.HHN. 2023-04-25T22:12:17.88 0.1 undecidable manual P 221 7.881 141 -0.19 97
IV.EMCN.HHN. 2023-04-25T22:12:17.93 0.3 undecidable manual P 317 6.7932 145 -0.01 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPMN.HHN. ML:1.4 0.000313 0.38 AML other m 2023-04-25T22:12:21.61
IV.EPMN.HHE. ML:1.6 0.00045850000000000003 1.14 AML other m 2023-04-25T22:12:21.05
IV.ECTS.HHE. ML:1.2 0.00014250000000000002 0.34 AML other m 2023-04-25T22:12:22.23
IV.EFIU.HHE. ML:1.3 0.000253 0.48 AML other m 2023-04-25T22:12:22.91
IV.ECTS.HHN. ML:1.2 0.00015 1.08 AML other m 2023-04-25T22:12:23.59
IV.EPOZ.HHE. ML:1.4 0.0002585 0.34 AML other m 2023-04-25T22:12:24.14
IV.EFIU.HHN. ML:1.3 0.00022799999999999999 1.4 AML other m 2023-04-25T22:12:24.92
IV.EPOZ.HHN. ML:1.5 0.00033850000000000004 1 AML other m 2023-04-25T22:12:24.16
IV.EPOZ.HNE. ML:1.4 0.000313 1.28 AML other m 2023-04-25T22:12:24.03
IV.EPOZ.HNN. ML:1.5 0.0003555 0.4 AML other m 2023-04-25T22:12:26.31
IV.AIO.HHN. ML:1.2 0.00008840000000000001 0.94 AML other m 2023-04-25T22:12:28.56
IV.AIO.HHE. ML:1.1 0.00006544999999999999 0.4 AML other m 2023-04-25T22:12:29.65
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