Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 08-05-2021 and time 18:20:06 (UTC) in region 2 km NW Sant'Alfio (CT)

A magnitude ML 2.4 earthquake occured in region: 2 km NW Sant'Alfio (CT), on

  • 08-05-2021 18:20:06 (UTC)
  • 08-05-2021 20:20:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7560, 15.1240 at 8 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Alfio CT 2 1582 1582
Milo CT 4 1087 2669
Giarre CT 6 27659 30328
Mascali CT 6 14282 44610
Zafferana Etnea CT 7 9517 54127
Riposto CT 8 14838 68965
Piedimonte Etneo CT 8 3963 72928
Santa Venerina CT 8 8592 81520
Fiumefreddo di Sicilia CT 9 9623 91143
Linguaglossa CT 10 5403 96546
Calatabiano CT 12 5308 101854
Castiglione di Sicilia CT 14 3215 105069
Gaggi ME 15 3184 108253
Trecastagni CT 16 10910 119163
Motta Camastra ME 16 845 120008
Francavilla di Sicilia ME 16 3945 123953
Viagrande CT 16 8563 132516
Pedara CT 16 14102 146618
Acireale CT 16 52622 199240
Giardini-Naxos ME 17 9415 208655
Aci Sant'Antonio CT 17 17984 226639
Aci Catena CT 17 29851 256490
Moio Alcantara ME 17 717 257207
Aci Bonaccorsi CT 18 3524 260731
Taormina ME 18 10960 271691
Graniti ME 18 1492 273183
Castelmola ME 18 1088 274271
Nicolosi CT 18 7463 281734
Malvagna ME 19 733 282467
Valverde CT 20 7840 290307
San Giovanni la Punta CT 20 23060 313367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
62 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
98 Km E of Caltanissetta (63360 inhabitants)
99 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 2.4 2021-05-08
18:20:06		 37.7563 15.1238 8 2021-12-29
11:12:35		 Bollettino Sismico Italiano INGV 96325691
Reviewed
Rev200 		ML 2.2 2021-05-08
18:20:06		 37.771 15.094 6 2021-10-07
17:05:36		 Sala Operativa INGV_OE (Catania) 89923071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-08 18:20:06 ± 0.07
Latitude 37.7563 ± 0.0045
Longitude 15.1238 ± 0.0057
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96325691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 561
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 60
Number of defining phases 60
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00809
Epicentral distance of station farthest from the epicenter (degree) 1.24466
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 42
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 89923071
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-08 18:29:01

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 66
Type of magnitude ML
Reference to an origin 96325691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-07 17:05:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-05-08T18:20:31.07 0.3 undecidable manual P 56 138.1617 50 1.44 34
IV.GIB.HHZ. 2021-05-08T18:20:25.28 0.6 undecidable manual P 285 99.5226 50 1.59 22
IV.PLLN.EHZ. 2021-05-08T18:20:23.88 0.6 undecidable manual P 287 89.7435 50 1.7 21
IV.MPNC.HHZ. 2021-05-08T18:20:22.24 0.6 undecidable manual S 25 47.7189 50 -0.12 46
MN.CEL.HHZ. 2021-05-08T18:20:21.79 0.1 undecidable manual P 50 87.4458 50 -0.04 86
IV.HAVL.HHZ. 2021-05-08T18:20:21.79 0.3 undecidable manual P 180 88.3449 50 -0.18 63
IV.CAGR.HHZ. 2021-05-08T18:20:19.07 0.3 undecidable manual P 255 56.7987 50 1.98 27
MN.VAE.HHZ. 2021-05-08T18:20:19.69 0.6 undecidable manual P 245 74.8695 50 -0.19 43
IV.MSRU.HHZ. 2021-05-08T18:20:18.33 0.3 undecidable manual P 31 65.5899 50 -0.12 66
IV.SSY.HHZ. 2021-05-08T18:20:18.57 0.3 undecidable manual P 184 66.5778 50 -0.03 67
IV.MTTG.HHZ. 2021-05-08T18:20:17.12 0.3 undecidable manual P 61 57.3981 50 -0.07 68
IV.MSFR.HHZ. 2021-05-08T18:20:17.90 0.3 undecidable manual P 304 55.7997 50 0.95 52
IV.MILZ.HHZ. 2021-05-08T18:20:17.74 0.3 undecidable manual P 9 57.8976 50 0.48 62
IV.NOV.HHZ. 2021-05-08T18:20:17.17 0.6 undecidable manual S 2 30.1476 106 -0.27 46
IV.HCRL.HHZ. 2021-05-08T18:20:16.28 0.3 undecidable manual P 189 53.1024 50 -0.25 66
IV.GALF.HHZ. 2021-05-08T18:20:16.34 0.6 undecidable manual P 264 49.1175 50 0.42 43
IV.EPZF.HHZ. 2021-05-08T18:20:16.10 0.6 undecidable manual S 288 24.5532 109 0.5 44
IV.MCPD.HHZ. 2021-05-08T18:20:16.49 0.3 undecidable manual P 320 53.0025 50 -0.02 69
IV.AIO.HHZ. 2021-05-08T18:20:15.64 0.3 undecidable manual S 22 25.6521 108 -0.32 68
IV.HLNI.HHZ. 2021-05-08T18:20:15.57 0.3 undecidable manual P 206 50.4162 50 -0.54 62
IV.MPNC.HHZ. 2021-05-08T18:20:15.21 0.3 undecidable manual P 25 47.7189 50 -0.48 63
IV.MUCR.HHZ. 2021-05-08T18:20:13.91 0.1 undecidable manual P 326 38.628 50 -0.39 88
IV.ESLN.HHZ. 2021-05-08T18:20:12.06 0.6 undecidable manual S 242 14.874 120 -0.45 45
IV.NOV.HHZ. 2021-05-08T18:20:12.48 0.3 undecidable manual P 2 30.1476 106 -0.38 67
IV.ECTS.HHZ. 2021-05-08T18:20:12.06 0.6 undecidable manual S 359 13.9749 121 -0.18 48
IV.ESCV.HHZ. 2021-05-08T18:20:12.51 0.3 undecidable manual P 268 27.0507 107 0.24 69
IV.ECNE.HHN. 2021-05-08T18:20:12.11 0.6 undecidable manual S 275 10.7781 128 0.78 40
IV.EFIU.HHZ. 2021-05-08T18:20:12.14 0.6 undecidable manual S 64 8.3805 135 1.42 29
IV.EMPL.HHZ. 2021-05-08T18:20:12.61 0.6 undecidable manual S 238 15.9729 118 -0.25 47
IV.ESML.HHZ. 2021-05-08T18:20:12.20 0.3 undecidable manual P 235 26.3514 108 0.07 72
IV.EPIT.HHZ. 2021-05-08T18:20:11.36 0.3 undecidable manual S 316 8.4804 135 0.62 64
IV.EPZF.HHZ. 2021-05-08T18:20:11.62 0.1 undecidable manual P 288 24.5532 109 -0.17 94
IV.AIO.HHZ. 2021-05-08T18:20:11.69 0.3 undecidable manual P 22 25.6521 108 -0.31 68
IV.EMFS.HHE. 2021-05-08T18:20:11.48 0.6 undecidable manual S 250 11.7771 126 -0.14 48
IV.EMNR.HHZ. 2021-05-08T18:20:11.61 0.6 undecidable manual S 308 10.878 128 0.24 47
IV.EMCN.HHN. 2021-05-08T18:20:11.27 0.6 undecidable manual S 296 8.7801 134 0.46 46
IV.EVRN.HNZ. 2021-05-08T18:20:11.41 0.6 undecidable manual S 172 7.4814 138 0.9 38
IV.ESPC.HHN. 2021-05-08T18:20:11.38 0.6 undecidable manual S 230 11.0778 127 -0.02 50
IV.EMSG.HHZ. 2021-05-08T18:20:10.31 0.1 undecidable manual P 295 16.872 117 -0.05 98
IV.ENIC.HHZ. 2021-05-08T18:20:10.27 0.6 undecidable manual P 213 16.4724 117 -0.03 49
IV.EMPL.HHZ. 2021-05-08T18:20:09.79 0.1 undecidable manual P 238 15.9729 118 -0.42 91
IV.EMCN.HHN. 2021-05-08T18:20:09.00 0.1 undecidable manual P 296 8.7801 134 -0.03 100
IV.ECPN.HHZ. 2021-05-08T18:20:09.37 0.1 undecidable manual P 263 12.1767 125 -0.18 96
IV.EPOZ.HHZ. 2021-05-08T18:20:09.87 0.1 undecidable manual P 149 10.9779 128 0.51 89
IV.ESPC.HHN. 2021-05-08T18:20:09.10 0.1 undecidable manual P 230 11.0778 127 -0.27 94
IV.ESVO.HHE. 2021-05-08T18:20:09.97 0.1 undecidable manual P 277 15.6732 118 -0.17 96
IV.ESAL.HHZ. 2021-05-08T18:20:09.92 0.3 undecidable manual S 98 0.8991 174 0.39 70
IV.ESLN.HHZ. 2021-05-08T18:20:09.57 0.1 undecidable manual P 242 14.874 120 -0.44 90
IV.ECBD.HHN. 2021-05-08T18:20:09.78 0.6 undecidable manual S 309 4.1958 153 -0.08 50
IV.EMFO.HHE. 2021-05-08T18:20:09.84 0.6 undecidable manual S 232 3.6963 156 0.06 50
IV.ECTS.HHZ. 2021-05-08T18:20:09.47 0.1 undecidable manual P 359 13.9749 121 -0.38 92
IV.EMFS.HHE. 2021-05-08T18:20:09.26 0.1 undecidable manual P 250 11.7771 126 -0.23 95
IV.EMNR.HHZ. 2021-05-08T18:20:09.40 0.1 undecidable manual P 308 10.878 128 0.05 99
IV.ECNE.HHN. 2021-05-08T18:20:09.28 0.1 undecidable manual P 275 10.7781 128 -0.04 99
IV.EFIU.HHZ. 2021-05-08T18:20:08.91 0.1 undecidable manual P 64 8.3805 135 -0.07 99
IV.ECBD.HHN. 2021-05-08T18:20:08.24 0.1 undecidable manual P 309 4.1958 153 -0.23 96
IV.EMFO.HHE. 2021-05-08T18:20:08.27 0.1 undecidable manual P 232 3.6963 156 -0.16 98
IV.EVRN.HNZ. 2021-05-08T18:20:08.92 0.1 undecidable manual P 172 7.4814 138 0.07 99
IV.EPIT.HHZ. 2021-05-08T18:20:08.97 0.1 undecidable manual P 316 8.4804 135 -0.01 100
IV.ESAL.HHZ. 2021-05-08T18:20:08.12 0.1 undecidable manual P 98 0.8991 174 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPIT.HHN. ML:3.3 0.031186574999999998 0.2432 AML other m 2021-05-08T18:20:11.85
IV.EPIT.HHE. ML:3.2 0.027859925000000004 1.6928 AML other m 2021-05-08T18:20:12.03
IV.EFIU.HHE. ML:2.3 0.0029610064999999997 0.2688 AML other m 2021-05-08T18:20:12.61
IV.ECTS.HHE. ML:2.3 0.002139173 0.2176 AML other m 2021-05-08T18:20:12.79
IV.EVRN.HHN. ML:2.8 0.011839095000000001 0.1792 AML other m 2021-05-08T18:20:13.33
IV.EFIU.HHN. ML:2.3 0.0032629865000000004 0.5632 AML other m 2021-05-08T18:20:13.54
IV.EPOZ.HHN. ML:2.5 0.00412332 0.2688 AML other m 2021-05-08T18:20:14.28
IV.EVRN.HNE. ML:2.9 0.01204836 0.3328 AML other m 2021-05-08T18:20:14.64
IV.EVRN.HHE. ML:3.0 0.016746925 0.3072 AML other m 2021-05-08T18:20:14.64
IV.ECTS.HHN. ML:2.3 0.0021865135000000003 0.2816 AML other m 2021-05-08T18:20:14.57
IV.EVRN.HNN. ML:3.0 0.015298605000000002 0.2432 AML other m 2021-05-08T18:20:14.62
IV.EMPL.HHE. ML:2.6 0.0035152634999999995 0.192 AML other m 2021-05-08T18:20:15.01
IV.EMPL.HHN. ML:2.8 0.0058200000000000005 1.78 AML other m 2021-05-08T18:20:15.98
IV.ENIC.HHE. ML:2.5 0.0030748305 1.7952 AML other m 2021-05-08T18:20:16.94
IV.ENIC.HNN. ML:2.6 0.0035800000000000003 0.26 AML other m 2021-05-08T18:20:17.41
IV.ENIC.HHN. ML:2.6 0.0038100000000000005 0.34 AML other m 2021-05-08T18:20:17.54
IV.EPOZ.HHE. ML:2.6 0.004967974500000001 0.3328 AML other m 2021-05-08T18:20:17.90
IV.AIO.HHE. ML:2.2 0.0009661001 0.2432 AML other m 2021-05-08T18:20:18.12
IV.AIO.HHN. ML:2.3 0.0012909204999999998 0.2432 AML other m 2021-05-08T18:20:18.85
IV.EPZF.HHE. ML:2.5 0.00212 1.5 AML other m 2021-05-08T18:20:18.20
IV.EMSG.HHN. ML:2.8 0.006085 0.56 AML other m 2021-05-08T18:20:19.10
IV.NOV.HHE. ML:2.8 0.0032322074999999997 1.5264 AML other m 2021-05-08T18:20:19.17
IV.ENIC.HNE. ML:2.6 0.00395 0.18 AML other m 2021-05-08T18:20:19.70
IV.EMSG.HHE. ML:2.7 0.00463 0.26 AML other m 2021-05-08T18:20:20.07
IV.NOV.HHN. ML:2.6 0.00183 0.46 AML other m 2021-05-08T18:20:20.33
IV.ESCV.HHE. ML:2.3 0.0011414735 0.32 AML other m 2021-05-08T18:20:22.78
IV.ESCV.HHN. ML:2.5 0.0018199999999999998 1.5 AML other m 2021-05-08T18:20:23.75
IV.EPZF.HHN. ML:2.7 0.0030236675 0.576 AML other m 2021-05-08T18:20:23.46
IV.MPNC.HHN. ML:2.4 0.0007513876500000001 0.6016 AML other m 2021-05-08T18:20:23.96
IV.MUCR.HHE. ML:2.1 0.000481 0.34 AML other m 2021-05-08T18:20:23.69
IV.MPNC.HHE. ML:2.6 0.001125 1.4 AML other m 2021-05-08T18:20:24.92
IV.HCRL.HHE. ML:2.3 0.0004595 1.52 AML other m 2021-05-08T18:20:24.20
IV.ESML.HNE. ML:2.1 0.0007615 1.42 AML other m 2021-05-08T18:20:25.01
IV.ESML.HHE. ML:2.1 0.000742 1.4 AML other m 2021-05-08T18:20:25.01
IV.ESML.HHN. ML:2.2 0.0008205 0.52 AML other m 2021-05-08T18:20:25.39
IV.ESML.HNN. ML:2.1 0.0007515000000000001 0.52 AML other m 2021-05-08T18:20:25.40
IV.MUCR.HHN. ML:2.2 0.0006924999999999999 1.5 AML other m 2021-05-08T18:20:26.79
IV.HCRL.HHN. ML:2.1 0.00029549999999999997 1.62 AML other m 2021-05-08T18:20:26.06
IV.HLNI.HHN. ML:1.6 0.00009372900000000001 0.256 AML other m 2021-05-08T18:20:26.45
IV.HLNI.HHE. ML:1.5 0.00008558208500000001 0.3456 AML other m 2021-05-08T18:20:26.19
IV.GALF.HNN. ML:1.7 0.00013646486 1.3088 AML other m 2021-05-08T18:20:27.82
IV.GALF.HHE. ML:2.5 0.0008725 1.16 AML other m 2021-05-08T18:20:28.89
IV.MILZ.HHN. ML:2.4 0.00052546695 0.384 AML other m 2021-05-08T18:20:28.25
IV.SSY.HHE. ML:2.6 0.0007495000000000001 1.58 AML other m 2021-05-08T18:20:28.87
IV.MCPD.HHN. ML:1.9 0.00017999999999999998 0.32 AML other m 2021-05-08T18:20:29.03
IV.MTTG.HHE. ML:1.9 0.0001645 1.42 AML other m 2021-05-08T18:20:29.26
IV.MCPD.HHE. ML:1.9 0.000189 1.66 AML other m 2021-05-08T18:20:30.84
IV.MSFR.HHN. ML:1.6 0.000102313425 0.3584 AML other m 2021-05-08T18:20:30.30
IV.MSRU.HHE. ML:2.2 0.000299 0.44 AML other m 2021-05-08T18:20:30.18
IV.MTTG.HHN. ML:1.9 0.000176 0.56 AML other m 2021-05-08T18:20:31.45
IV.MSRU.HHN. ML:2.2 0.000264 0.36 AML other m 2021-05-08T18:20:31.74
IV.GALF.HHN. ML:2.5 0.000869 1.18 AML other m 2021-05-08T18:20:32.36
IV.MILZ.HHE. ML:2.6 0.0009834760999999999 0.4608 AML other m 2021-05-08T18:20:32.53
IV.SSY.HHN. ML:2.9 0.00151709 0.2176 AML other m 2021-05-08T18:20:34.21
IV.GALF.HNE. ML:1.7 0.00013789800000000001 1.0912 AML other m 2021-05-08T18:20:34.44
IV.CAGR.HHE. ML:2.3 0.00040649999999999996 0.64 AML other m 2021-05-08T18:20:35.37
IV.HAVL.HHE. ML:2.6 0.00041900000000000005 0.28 AML other m 2021-05-08T18:20:37.45
IV.CAGR.HHN. ML:2.2 0.00032950000000000004 1.16 AML other m 2021-05-08T18:20:37.40
IV.HAVL.HHN. ML:2.7 0.0005520000000000001 0.24 AML other m 2021-05-08T18:20:37.45
MN.CEL.HNN. ML:2.1 0.00014644980000000002 0.9216 AML other m 2021-05-08T18:20:38.30
MN.CEL.HHN. ML:2.0 0.0001235 0.5 AML other m 2021-05-08T18:20:38.08
MN.CEL.HHE. ML:1.9 0.00009371885999999999 0.6272 AML other m 2021-05-08T18:20:38.03
IV.MSFR.HHE. ML:1.6 0.0000981 0.9 AML other m 2021-05-08T18:20:38.08
MN.CEL.HNE. ML:1.9 0.000089720065 0.512 AML other m 2021-05-08T18:20:43.67
IV.GIB.HHE. ML:2.3 0.0001985 0.72 AML other m 2021-05-08T18:20:44.03
IV.GIB.HHN. ML:2.3 0.00021349999999999999 0.6 AML other m 2021-05-08T18:20:46.83
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
Waveforms Seismic signals in miniseed + resp format Download