Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 31-07-2022 and time 10:29:44 (UTC) in region 2 km N Sant'Alfio (CT)

A magnitude ML 2.5 earthquake occured in region: 2 km N Sant'Alfio (CT), on

  • 31-07-2022 10:29:44 (UTC)
  • 31-07-2022 12:29:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7620, 15.1490 at 9 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
Sant'Alfio CT 2 1582 1582
Mascali CT 4 14282 15864
Giarre CT 5 27659 43523
Milo CT 5 1087 44610
Piedimonte Etneo CT 6 3963 48573
Riposto CT 6 14838 63411
Fiumefreddo di Sicilia CT 6 9623 73034
Santa Venerina CT 8 8592 81626
Zafferana Etnea CT 8 9517 91143
Linguaglossa CT 9 5403 96546
Calatabiano CT 10 5308 101854
Gaggi ME 13 3184 105038
Castiglione di Sicilia CT 14 3215 108253
Giardini-Naxos ME 14 9415 117668
Motta Camastra ME 15 845 118513
Taormina ME 16 10960 129473
Francavilla di Sicilia ME 16 3945 133418
Castelmola ME 16 1088 134506
Graniti ME 16 1492 135998
Acireale CT 17 52622 188620
Trecastagni CT 17 10910 199530
Aci Sant'Antonio CT 17 17984 217514
Viagrande CT 17 8563 226077
Moio Alcantara ME 18 717 226794
Aci Catena CT 18 29851 256645
Pedara CT 18 14102 270747
Aci Bonaccorsi CT 19 3524 274271
Letojanni ME 19 2861 277132
Mongiuffi Melia ME 19 600 277732
Malvagna ME 19 733 278465
Nicolosi CT 20 7463 285928

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km N of Acireale (52622 inhabitants)
29 Km N of Catania (314555 inhabitants)
58 Km SW of Reggio di Calabria (183035 inhabitants)
60 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
100 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 2.5 2022-07-31
10:29:44		 37.762 15.1487 9 2023-01-31
19:03:35		 Bollettino Sismico Italiano INGV 108974861
Reviewed
Rev200 		ML 2.5 2022-07-31
10:29:43		 37.767 15.127 7 2022-08-27
02:08:21		 Sala Operativa INGV_OE (Catania) 107914341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-31 10:29:44 ± 0.06
Latitude 37.7620 ± 0.0036
Longitude 15.1487 ± 0.0057
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 108974861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 538
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 62
Number of defining phases 62
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.01349
Epicentral distance of station farthest from the epicenter (degree) 1.70691
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:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 64
Type of magnitude ML
Reference to an origin 108974861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-08-27 02:00:56

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 107914341
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2022-07-31 11:00:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAR1.HHZ. 2022-07-31T10:30:14.81 0.3 undecidable manual P 29 189.4659 38 0.26 45
IV.PLAC.HHZ. 2022-07-31T10:30:08.26 0.3 undecidable manual P 55 135.9639 50 1.59 31
IV.CLTA.HHZ. 2022-07-31T10:30:05.70 0.3 undecidable manual P 238 124.1868 50 0.85 47
IV.HCRL.HHZ. 2022-07-31T10:30:02.14 0.6 undecidable manual S 191 54.1014 50 0.76 38
IV.RAFF.HHZ. 2022-07-31T10:30:00.07 0.1 undecidable manual P 229 91.5417 50 0.25 82
IV.HLNI.HHZ. 2022-07-31T10:30:00.96 0.6 undecidable manual S 208 51.9036 50 0.16 45
IV.HMDC.HHZ. 2022-07-31T10:30:00.13 0.3 undecidable manual P 200 94.7385 50 -0.19 62
IV.SOI.EHZ. 2022-07-31T10:29:59.09 0.3 undecidable manual P 66 86.4468 50 0.05 65
MN.CEL.HHZ. 2022-07-31T10:29:59.00 0.3 undecidable manual P 49 85.4478 50 0.12 64
IV.HVZN.HHZ. 2022-07-31T10:29:57.18 0.3 undecidable manual P 211 75.1692 50 -0.12 65
IV.SSY.HHZ. 2022-07-31T10:29:56.07 0.3 undecidable manual P 186 67.377 50 -0.03 67
IV.MSRU.HHZ. 2022-07-31T10:29:55.57 0.3 undecidable manual P 29 63.8916 50 0 68
IV.NOV.HHZ. 2022-07-31T10:29:54.76 0.6 undecidable manual S 358 29.5482 107 -0.01 48
IV.MTTG.HHZ. 2022-07-31T10:29:54.36 0.3 undecidable manual P 61 55.2003 50 0.14 68
IV.MSFR.HHZ. 2022-07-31T10:29:54.64 0.3 undecidable manual P 302 57.2982 50 0.08 68
IV.AIO.HHZ. 2022-07-31T10:29:53.14 0.6 undecidable manual S 18 24.3534 111 0.06 48
IV.HCRL.HHZ. 2022-07-31T10:29:53.84 0.3 undecidable manual P 191 54.1014 50 -0.22 67
IV.HLNI.HHZ. 2022-07-31T10:29:53.20 0.3 undecidable manual P 208 51.9036 50 -0.52 62
IV.HAGA.HHZ. 2022-07-31T10:29:53.91 0.6 undecidable manual P 179 52.9026 50 0.03 46
IV.EMPL.HHZ. 2022-07-31T10:29:51.44 0.6 undecidable manual S 240 18.1707 117 0.33 46
IV.MUCR.HHZ. 2022-07-31T10:29:51.61 0.3 undecidable manual P 322 39.3273 50 -0.18 69
IV.LIBRI.HHZ. 2022-07-31T10:29:51.64 0.3 undecidable manual P 332 40.5261 50 -0.33 67
IV.ESLN.HHZ. 2022-07-31T10:29:50.41 0.6 undecidable manual S 244 17.0718 118 -0.37 46
IV.ECNE.HHN. 2022-07-31T10:29:50.72 0.6 undecidable manual S 272 12.876 125 1.18 33
IV.ECTS.HHZ. 2022-07-31T10:29:50.02 0.6 undecidable manual S 350 13.5753 124 0.3 47
IV.EMFS.HHE. 2022-07-31T10:29:50.00 0.6 undecidable manual S 250 14.0748 123 0.13 49
IV.EMNR.HHZ. 2022-07-31T10:29:50.16 0.6 undecidable manual S 299 12.3765 127 0.77 40
IV.EPDN.HHZ. 2022-07-31T10:29:50.06 0.6 undecidable manual S 272 11.5773 128 0.88 38
IV.NOV.HHZ. 2022-07-31T10:29:49.97 0.1 positive manual P 358 29.5482 107 -0.27 92
IV.EPIT.HHZ. 2022-07-31T10:29:49.55 0.6 undecidable manual S 304 9.7791 133 0.86 39
IV.ESML.HHZ. 2022-07-31T10:29:49.83 0.3 undecidable manual P 236 28.5492 108 -0.23 70
IV.AIO.HHZ. 2022-07-31T10:29:49.10 0.1 positive manual P 18 24.3534 111 -0.16 95
IV.EMAS.HHZ. 2022-07-31T10:29:49.88 0.3 undecidable manual P 203 21.9669 113 1.06 52
IV.EMCN.HHN. 2022-07-31T10:29:49.37 0.6 undecidable manual S 288 10.5783 131 0.46 46
IV.EPZF.HHZ. 2022-07-31T10:29:49.57 0.3 undecidable manual P 285 26.4513 109 -0.1 72
IV.ESPC.HHN. 2022-07-31T10:29:49.41 0.6 undecidable manual S 234 13.1757 125 -0.2 48
IV.ECBD.HHN. 2022-07-31T10:29:48.08 0.6 undecidable manual S 290 5.7942 148 0.26 48
IV.EFIU.HHZ. 2022-07-31T10:29:48.73 0.6 undecidable manual S 60 6.1938 146 0.84 40
IV.EMSG.HHZ. 2022-07-31T10:29:48.29 0.3 undecidable manual P 291 18.6702 116 0.08 73
IV.ECHR.HHE. 2022-07-31T10:29:48.75 0.3 undecidable manual P 248 22.3554 112 -0.14 72
IV.EVRN.HNZ. 2022-07-31T10:29:48.60 0.6 undecidable manual S 188 8.1807 138 0.29 47
IV.EPOZ.HHZ. 2022-07-31T10:29:47.18 0.1 positive manual P 161 10.5783 131 0.32 94
IV.EPDN.HHZ. 2022-07-31T10:29:47.01 0.1 undecidable manual P 272 11.5773 128 0 100
IV.ESAL.HHZ. 2022-07-31T10:29:47.37 0.6 undecidable manual S 238 1.4985 171 0.1 50
IV.ESVO.HHE. 2022-07-31T10:29:47.93 0.3 undecidable manual P 274 17.7711 117 -0.12 72
IV.EPMN.HHZ. 2022-07-31T10:29:47.91 0.6 undecidable manual S 21 6.993 143 -0.13 49
IV.ESLN.HHZ. 2022-07-31T10:29:47.38 0.1 undecidable manual P 244 17.0718 118 -0.56 87
IV.ECNE.HHN. 2022-07-31T10:29:47.12 0.1 undecidable manual P 272 12.876 125 -0.1 98
IV.EMPL.HHZ. 2022-07-31T10:29:47.62 0.3 undecidable manual P 240 18.1707 117 -0.51 67
IV.EMFO.HHE. 2022-07-31T10:29:47.81 0.6 undecidable manual S 240 5.8941 147 -0.03 50
IV.EMFS.HHE. 2022-07-31T10:29:47.04 0.1 undecidable manual P 250 14.0748 123 -0.37 92
IV.EMNR.HHZ. 2022-07-31T10:29:47.15 0.1 undecidable manual P 299 12.3765 127 0.01 100
IV.EMCN.HHN. 2022-07-31T10:29:46.83 0.1 undecidable manual P 288 10.5783 131 -0.03 100
IV.EFIU.HHZ. 2022-07-31T10:29:46.13 0.1 negative manual P 60 6.1938 146 -0.14 98
IV.ESPC.HHN. 2022-07-31T10:29:46.87 0.1 undecidable manual P 234 13.1757 125 -0.39 92
IV.EVRN.HNZ. 2022-07-31T10:29:46.47 0.1 positive manual P 188 8.1807 138 -0.04 100
IV.EPIT.HHZ. 2022-07-31T10:29:46.76 0.1 positive manual P 304 9.7791 133 0.03 100
IV.EPMN.HHZ. 2022-07-31T10:29:46.04 0.1 negative manual P 21 6.993 143 -0.32 94
IV.ECTS.HHZ. 2022-07-31T10:29:46.96 0.1 positive manual P 350 13.5753 124 -0.37 92
IV.EMFO.HHE. 2022-07-31T10:29:45.96 0.1 undecidable manual P 240 5.8941 147 -0.28 95
IV.ECBD.HHN. 2022-07-31T10:29:45.99 0.1 undecidable manual P 290 5.7942 148 -0.24 96
IV.ESAL.HHZ. 2022-07-31T10:29:45.61 0.1 positive manual P 238 1.4985 171 -0.3 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPMN.HHE. ML:3.2 0.0255 0.2 AML other m 2022-07-31T10:29:48.05
IV.EPMN.HHN. ML:3.2 0.0246 0.2 AML other m 2022-07-31T10:29:48.05
IV.EFIU.HHN. ML:2.6 0.007584999999999999 0.64 AML other m 2022-07-31T10:29:49.90
IV.EFIU.HHE. ML:2.6 0.00746 0.92 AML other m 2022-07-31T10:29:49.23
IV.EVRN.HHN. ML:3.2 0.02655 0.42 AML other m 2022-07-31T10:29:50.47
IV.ECTS.HHN. ML:2.5 0.00362 1.1 AML other m 2022-07-31T10:29:51.70
IV.ECTS.HHE. ML:2.6 0.0044 0.2 AML other m 2022-07-31T10:29:51.44
IV.EPOZ.HHN. ML:2.8 0.00807 0.22 AML other m 2022-07-31T10:29:51.80
IV.EPOZ.HNN. ML:2.7 0.007155 0.22 AML other m 2022-07-31T10:29:51.81
IV.EVRN.HNE. ML:3.3 0.031 1.44 AML other m 2022-07-31T10:29:51.98
IV.EVRN.HNN. ML:3.3 0.02785 0.48 AML other m 2022-07-31T10:29:52.29
IV.EVRN.HHE. ML:3.3 0.02995 0.54 AML other m 2022-07-31T10:29:52.52
IV.EPOZ.HNE. ML:2.8 0.0075 0.46 AML other m 2022-07-31T10:29:54.00
IV.EPOZ.HHE. ML:2.7 0.0070999999999999995 1.68 AML other m 2022-07-31T10:29:55.99
IV.AIO.HHE. ML:2.6 0.0023799999999999997 0.44 AML other m 2022-07-31T10:29:55.38
IV.EPZF.HHE. ML:2.8 0.00325 0.46 AML other m 2022-07-31T10:29:56.02
IV.AIO.HHN. ML:2.6 0.002255 0.28 AML other m 2022-07-31T10:29:56.20
IV.EPZF.HHN. ML:2.9 0.00447 0.36 AML other m 2022-07-31T10:29:56.11
IV.EMSG.HHE. ML:3.2 0.01205 0.26 AML other m 2022-07-31T10:29:56.75
IV.NOV.HHN. ML:2.5 0.001565 0.9 AML other m 2022-07-31T10:29:57.50
IV.EMSG.HHN. ML:3.0 0.007574999999999999 1.14 AML other m 2022-07-31T10:29:57.11
IV.NOV.HHE. ML:2.7 0.002415 0.46 AML other m 2022-07-31T10:29:57.97
IV.ESML.HHN. ML:2.1 0.00061 0.28 AML other m 2022-07-31T10:29:59.25
IV.ESML.HNN. ML:2.5 0.001515 0.3 AML other m 2022-07-31T10:29:59.40
IV.LIBRI.HNE. ML:2.2 0.0005045 1.7 AML other m 2022-07-31T10:30:00.01
IV.LIBRI.HHE. ML:1.9 0.0002445 1.6 AML other m 2022-07-31T10:30:00.02
IV.HLNI.HHE. ML:2.0 0.00022049999999999997 0.28 AML other m 2022-07-31T10:30:01.61
IV.LIBRI.HNN. ML:2.2 0.00054 0.24 AML other m 2022-07-31T10:30:02.28
IV.HAGA.HHE. ML:2.1 0.00032999999999999994 0.78 AML other m 2022-07-31T10:30:02.48
IV.HCRL.HHE. ML:2.4 0.0006565 0.9 AML other m 2022-07-31T10:30:02.73
IV.HCRL.HHN. ML:2.4 0.0006680000000000001 1.02 AML other m 2022-07-31T10:30:02.84
IV.MUCR.HHN. ML:2.4 0.000957 0.68 AML other m 2022-07-31T10:30:03.75
IV.ESML.HNE. ML:2.5 0.001835 0.46 AML other m 2022-07-31T10:30:04.19
IV.ESML.HHE. ML:2.1 0.0007164999999999999 0.42 AML other m 2022-07-31T10:30:04.19
IV.MUCR.HHE. ML:2.4 0.0008234999999999999 1.22 AML other m 2022-07-31T10:30:05.02
IV.HLNI.HHN. ML:2.0 0.00022250000000000001 0.96 AML other m 2022-07-31T10:30:05.50
IV.GALF.HHN. ML:2.8 0.00158 0.66 AML other m 2022-07-31T10:30:05.42
IV.MSRU.HHE. ML:2.6 0.0007695 0.32 AML other m 2022-07-31T10:30:05.68
IV.MSRU.HHN. ML:2.5 0.000601 0.26 AML other m 2022-07-31T10:30:06.25
IV.GALF.HHE. ML:3.0 0.0025 1.3 AML other m 2022-07-31T10:30:06.98
IV.HAGA.HHN. ML:2.1 0.000334 0.96 AML other m 2022-07-31T10:30:07.31
IV.LIBRI.HHN. ML:2.0 0.0003195 1.18 AML other m 2022-07-31T10:30:07.94
IV.MTTG.HHE. ML:2.1 0.0003105 0.72 AML other m 2022-07-31T10:30:08.46
IV.MSFR.HHN. ML:1.9 0.00016849999999999998 0.82 AML other m 2022-07-31T10:30:10.70
IV.SSY.HHN. ML:3.2 0.002885 1.64 AML other m 2022-07-31T10:30:11.85
IV.SSY.HNN. ML:2.6 0.0007275000000000001 1.64 AML other m 2022-07-31T10:30:11.86
IV.SSY.HNE. ML:2.6 0.0007804999999999999 1.64 AML other m 2022-07-31T10:30:11.04
IV.MTTG.HHN. ML:2.2 0.000397 1.58 AML other m 2022-07-31T10:30:11.84
IV.HVZN.HHE. ML:2.6 0.0005629999999999999 1.12 AML other m 2022-07-31T10:30:11.84
IV.SSY.HHE. ML:2.8 0.001088 0.76 AML other m 2022-07-31T10:30:11.47
IV.HMDC.HHE. ML:2.0 0.0001135 0.32 AML other m 2022-07-31T10:30:14.47
IV.RAFF.HHE. ML:2.3 0.00020400000000000003 0.68 AML other m 2022-07-31T10:30:14.76
IV.HMDC.HNN. ML:2.6 0.000389 0.6 AML other m 2022-07-31T10:30:14.59
IV.HMDC.HHN. ML:2.5 0.0003525 0.48 AML other m 2022-07-31T10:30:15.58
MN.CEL.HHN. ML:2.3 0.00026900000000000003 0.56 AML other m 2022-07-31T10:30:15.58
MN.CEL.HNN. ML:2.4 0.0003095 0.56 AML other m 2022-07-31T10:30:15.58
MN.CEL.HHE. ML:2.2 0.000184 1.24 AML other m 2022-07-31T10:30:15.72
MN.CEL.HNE. ML:2.2 0.000195 1.24 AML other m 2022-07-31T10:30:15.73
IV.HMDC.HNE. ML:2.6 0.0004215 1.34 AML other m 2022-07-31T10:30:16.78
IV.RAFF.HHN. ML:2.2 0.0001855 1.24 AML other m 2022-07-31T10:30:16.13
IV.MSFR.HHE. ML:2.0 0.0002315 0.82 AML other m 2022-07-31T10:30:16.57
IV.SOI.EHE. ML:1.9 0.00010580000000000001 0.38 AML other m 2022-07-31T10:30:18.45
IV.HVZN.HHN. ML:2.4 0.00041900000000000005 0.8 AML other m 2022-07-31T10:30:22.58
IV.SOI.EHN. ML:2.0 0.00010839999999999999 0.42 AML other m 2022-07-31T10:30:24.31
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
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