Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 28-04-2023 and time 13:26:11 (UTC) in region 7 km E Maletto (CT)

A magnitude ML 2.1 earthquake occured in region: 7 km E Maletto (CT), on

  • 28-04-2023 13:26:11 (UTC)
  • 28-04-2023 15:26:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8060, 14.9380 at 29 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
Maletto CT 7 3920 3920
Randazzo CT 8 10900 14820
Bronte CT 9 19172 33992
Santa Domenica Vittoria ME 13 980 34972
Maniace CT 13 3765 38737
Moio Alcantara ME 14 717 39454
Roccella Valdemone ME 16 666 40120
Malvagna ME 16 733 40853
Milo CT 18 1087 41940
Adrano CT 18 36122 78062
Castiglione di Sicilia CT 18 3215 81277
Linguaglossa CT 19 5403 86680
Zafferana Etnea CT 19 9517 96197
Biancavilla CT 19 24007 120204
Sant'Alfio CT 19 1582 121786
Ragalna CT 19 3924 125710

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Acireale (52622 inhabitants)
36 Km NW of Catania (314555 inhabitants)
69 Km SW of Messina (238439 inhabitants)
71 Km SW of Reggio di Calabria (183035 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
89 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 2.1 2023-04-28
13:26:11		 37.8057 14.9385 29 2024-03-01
17:18:10		 Bollettino Sismico Italiano INGV 118145521
Reviewed
Rev200 		ML 2.0 2023-04-28
13:26:11		 37.814 14.907 23 2024-01-29
12:11:54		 Sala Operativa INGV_OE (Catania) 116837361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-28 13:26:11 ± 0.08
Latitude 37.8057 ± 0.0036
Longitude 14.9385 ± 0.0068
Depth (km) 29 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118145521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 34
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.01799
Epicentral distance of station farthest from the epicenter (degree) 0.85795
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 118145521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-29 12:14:29

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 116837361
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-04-28 13:34:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2023-04-28T13:26:31.44 0.6 undecidable manual S 162 60.7947 110 0.15 44
IV.HLNI.HHZ. 2023-04-28T13:26:28.81 0.3 undecidable manual S 187 51.0156 114 -0.06 68
IV.HMDC.HHZ. 2023-04-28T13:26:27.96 0.3 undecidable manual P 188 94.9383 102 -0.12 62
IV.HAVL.HHZ. 2023-04-28T13:26:27.89 0.3 undecidable manual P 170 95.238 102 -0.24 60
IV.MCPD.HHZ. 2023-04-28T13:26:26.19 0.6 undecidable manual S 333 39.3273 121 0.1 46
IV.RAFF.HHZ. 2023-04-28T13:26:26.67 0.3 undecidable manual P 218 82.1511 104 0.5 59
IV.GALF.HHZ. 2023-04-28T13:26:26.27 0.6 undecidable manual S 252 34.2435 125 1.3 29
IV.MSFR.HHZ. 2023-04-28T13:26:25.98 0.6 undecidable manual S 310 39.5271 121 -0.16 46
IV.AIO.HHZ. 2023-04-28T13:26:24.49 0.3 undecidable manual S 54 31.6461 128 0.08 71
IV.MSRU.HHZ. 2023-04-28T13:26:24.98 0.3 undecidable manual P 44 71.1732 107 0.44 61
IV.HVZN.HHZ. 2023-04-28T13:26:24.73 0.3 undecidable manual P 196 72.2721 107 0.02 67
IV.SSY.HHZ. 2023-04-28T13:26:24.76 0.3 undecidable manual P 171 72.8715 106 -0.03 66
IV.LIBRI.HHN. 2023-04-28T13:26:23.87 0.3 undecidable manual S 358 30.8469 129 -0.37 67
IV.IVPL.HHZ. 2023-04-28T13:26:23.93 0.3 undecidable manual P 3 63.3921 109 0.53 60
IV.AGST.EHE. 2023-04-28T13:26:23.56 0.3 undecidable manual P 157 65.9895 108 -0.22 64
IV.MUCR.HHZ. 2023-04-28T13:26:23.29 0.3 undecidable manual S 348 26.9508 133 -0.15 71
IT.LNT.HGZ. 2023-04-28T13:26:22.39 0.3 undecidable manual P 174 57.6978 111 -0.18 66
IV.EPMN.HHZ. 2023-04-28T13:26:22.35 0.3 undecidable manual S 85 20.9679 141 0 73
IV.MILZ.HHN. 2023-04-28T13:26:22.68 0.3 undecidable manual P 26 57.5979 111 0.11 67
IV.HAGA.HHZ. 2023-04-28T13:26:22.89 0.1 undecidable manual P 162 60.7947 110 -0.14 88
IV.HCRL.HHN. 2023-04-28T13:26:22.58 0.1 undecidable manual P 172 58.5969 111 -0.12 89
IV.MPNC.HHN. 2023-04-28T13:26:22.00 0.1 undecidable manual P 44 52.4031 113 0.18 89
IV.ECBD.HHZ. 2023-04-28T13:26:21.48 0.3 undecidable manual S 102 13.2756 153 0.26 70
IV.EPIT.HHZ. 2023-04-28T13:26:21.32 0.3 undecidable manual S 87 10.3785 158 0.42 68
IV.ECTS.HHZ. 2023-04-28T13:26:21.54 0.3 undecidable manual S 62 18.0708 145 -0.34 69
IV.HLNI.HHZ. 2023-04-28T13:26:21.50 0.1 positive manual P 187 51.0156 114 -0.13 90
IV.EMSG.HHZ. 2023-04-28T13:26:20.13 0.3 undecidable manual S 30 1.998 176 -0.27 72
IV.EMCN.HHZ. 2023-04-28T13:26:20.83 0.6 undecidable manual S 101 8.4804 162 0.1 49
IV.EMNR.HHZ. 2023-04-28T13:26:20.98 0.6 undecidable manual S 81 7.7811 164 0.31 47
IV.EPZF.HHZ. 2023-04-28T13:26:20.69 0.6 undecidable manual S 286 7.3815 164 0.04 49
IV.ESPC.HHZ. 2023-04-28T13:26:20.94 0.6 undecidable manual S 148 14.7741 150 -0.47 45
IV.ECZM.HHZ. 2023-04-28T13:26:20.98 0.6 undecidable manual S 200 8.7801 162 0.22 47
IV.GALF.HHZ. 2023-04-28T13:26:19.88 0.3 undecidable manual P 252 34.2435 125 0.5 64
IV.AIO.HHZ. 2023-04-28T13:26:19.08 0.1 positive manual P 54 31.6461 128 0.03 96
IV.MSFR.HHZ. 2023-04-28T13:26:19.90 0.1 undecidable manual P 310 39.5271 121 -0.16 92
IV.EMAS.HHZ. 2023-04-28T13:26:19.40 0.3 undecidable manual P 158 27.0507 133 0.89 56
IV.MCPD.HHZ. 2023-04-28T13:26:19.82 0.1 undecidable manual P 333 39.3273 121 -0.2 91
IV.EPOZ.HHZ. 2023-04-28T13:26:19.17 0.3 undecidable manual P 124 26.4513 133 0.73 60
IV.LIBRI.HHN. 2023-04-28T13:26:18.66 0.3 undecidable manual P 358 30.8469 129 -0.29 68
IV.MUCR.HHZ. 2023-04-28T13:26:18.28 0.1 undecidable manual P 348 26.9508 133 -0.22 93
IV.EPIT.HHZ. 2023-04-28T13:26:17.08 0.3 undecidable manual P 87 10.3785 158 0.05 74
IV.ESAL.HHZ. 2023-04-28T13:26:17.98 0.6 undecidable manual P 108 18.0708 145 0.39 45
IV.ECTS.HHZ. 2023-04-28T13:26:17.38 0.3 undecidable manual P 62 18.0708 145 -0.22 70
IV.ESLN.HHZ. 2023-04-28T13:26:17.09 0.1 undecidable manual P 166 12.876 154 -0.09 97
IV.EMPL.HHZ. 2023-04-28T13:26:17.26 0.3 undecidable manual P 169 14.2746 151 -0.03 74
IV.EPMN.HHZ. 2023-04-28T13:26:17.77 0.3 undecidable manual P 85 20.9679 141 -0.1 71
IV.EMCN.HHZ. 2023-04-28T13:26:17.02 0.1 undecidable manual P 101 8.4804 162 0.09 98
IV.ECBD.HHZ. 2023-04-28T13:26:17.34 0.1 undecidable manual P 102 13.2756 153 0.13 97
IV.ESCV.HHZ. 2023-04-28T13:26:16.93 0.3 undecidable manual P 239 12.5763 154 -0.24 71
IV.ESVO.HHZ. 2023-04-28T13:26:16.78 0.1 undecidable manual P 169 3.6963 172 0.02 100
IV.EMSG.HHZ. 2023-04-28T13:26:16.54 0.3 undecidable manual P 30 1.998 176 -0.2 73
IV.EMNR.HHZ. 2023-04-28T13:26:16.98 0.1 undecidable manual P 81 7.7811 164 0.08 98
IV.EPZF.HHZ. 2023-04-28T13:26:16.64 0.1 negative manual P 286 7.3815 164 -0.24 96
IV.EMFO.HHZ. 2023-04-28T13:26:16.97 0.3 undecidable manual P 120 15.3735 149 -0.4 68
IV.ESPC.HHZ. 2023-04-28T13:26:16.99 0.1 undecidable manual P 148 14.7741 150 -0.33 92
IV.ECZM.HHZ. 2023-04-28T13:26:16.74 0.3 undecidable manual P 200 8.7801 162 -0.21 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHN. ML:2.5 0.0015099999999999998 0.38 AML other m 2023-04-28T13:26:21.02
IV.EPZF.HHE. ML:2.1 0.000715 1.36 AML other m 2023-04-28T13:26:21.26
IV.ECTS.HHE. ML:2.0 0.000391 1.08 AML other m 2023-04-28T13:26:21.81
IV.EMSG.HHN. ML:2.5 0.00158 0.54 AML other m 2023-04-28T13:26:22.37
IV.ECTS.HHN. ML:2.2 0.0006554999999999999 0.36 AML other m 2023-04-28T13:26:22.49
IV.EPMN.HHN. ML:2.2 0.000692 0.42 AML other m 2023-04-28T13:26:22.86
IV.EPMN.HHE. ML:2.3 0.000947 0.48 AML other m 2023-04-28T13:26:22.91
IV.EMSG.HHE. ML:2.4 0.00128 1.22 AML other m 2023-04-28T13:26:23.93
IV.MUCR.HHN. ML:1.6 0.00015 0.4 AML other m 2023-04-28T13:26:23.81
IV.MUCR.HHE. ML:1.6 0.00015429999999999998 0.44 AML other m 2023-04-28T13:26:23.68
IV.AIO.HHE. ML:1.9 0.00027449999999999995 0.36 AML other m 2023-04-28T13:26:25.08
IV.AIO.HHN. ML:1.9 0.00027949999999999996 0.24 AML other m 2023-04-28T13:26:26.14
IV.MCPD.HHE. ML:1.2 0.00004605 0.66 AML other m 2023-04-28T13:26:26.52
IV.GALF.HHE. ML:2.2 0.000536 1.32 AML other m 2023-04-28T13:26:26.93
IV.MCPD.HHN. ML:1.4 0.0000658 1.54 AML other m 2023-04-28T13:26:27.20
IV.GALF.HNE. ML:1.9 0.000262 0.48 AML other m 2023-04-28T13:26:27.56
IV.GALF.HNN. ML:1.9 0.000234 0.96 AML other m 2023-04-28T13:26:27.67
IV.GALF.HHN. ML:2.1 0.0004 0.86 AML other m 2023-04-28T13:26:28.68
IV.HLNI.HHE. ML:2.3 0.00045099999999999996 0.1 AML other m 2023-04-28T13:26:29.37
IV.HLNI.HHN. ML:2.1 0.0002465 0.14 AML other m 2023-04-28T13:26:30.29
IV.HVZN.HHE. ML:2.1 0.0001735 0.92 AML other m 2023-04-28T13:26:35.37
IV.IVPL.HNE. ML:2.1 0.00020600000000000002 0.52 AML other m 2023-04-28T13:26:35.81
IV.IVPL.HHE. ML:2.0 0.000184 0.48 AML other m 2023-04-28T13:26:35.81
IV.IVPL.HNN. ML:2.1 0.0002375 0.46 AML other m 2023-04-28T13:26:35.42
IV.IVPL.HHN. ML:2.1 0.00022199999999999998 0.46 AML other m 2023-04-28T13:26:35.43
IV.SSY.HNN. ML:2.4 0.000324 1.1 AML other m 2023-04-28T13:26:36.39
IV.SSY.HNE. ML:2.5 0.0004125 0.3 AML other m 2023-04-28T13:26:39.68
IV.RAFF.HNN. ML:1.7 0.0000637 1.1 AML other m 2023-04-28T13:26:39.58
IV.SSY.HHN. ML:2.5 0.0004205 0.3 AML other m 2023-04-28T13:26:39.52
IV.SSY.HHE. ML:2.1 0.00017649999999999998 0.58 AML other m 2023-04-28T13:26:39.44
IV.RAFF.HHN. ML:2.1 0.0001605 1.8 AML other m 2023-04-28T13:26:39.94
IV.RAFF.HNE. ML:1.9 0.0000896 1.48 AML other m 2023-04-28T13:26:39.95
IV.RAFF.HHE. ML:2.0 0.000127 1.5 AML other m 2023-04-28T13:26:39.96
IV.HMDC.HHE. ML:2.2 0.0001455 0.22 AML other m 2023-04-28T13:26:40.87
IV.HMDC.HNE. ML:2.5 0.0003255 0.94 AML other m 2023-04-28T13:26:41.87
IV.HMDC.HHN. ML:2.2 0.00015150000000000002 0.94 AML other m 2023-04-28T13:26:41.43
IV.HMDC.HNN. ML:2.5 0.000313 0.36 AML other m 2023-04-28T13:26:41.44
IV.HVZN.HHN. ML:2.3 0.000308 0.32 AML other m 2023-04-28T13:26:42.27
IV.HAVL.HHN. ML:2.2 0.00016749999999999998 0.74 AML other m 2023-04-28T13:26:44.54
IV.HAVL.HHE. ML:2.1 0.000128 0.28 AML other m 2023-04-28T13:26:46.59
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
Waveforms Seismic signals in miniseed + resp format Download