Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 03-08-2021 and time 16:44:26 (Italy) in region 5 km NW Milo (CT)

A magnitude ML 2.3 earthquake occured in region: 5 km NW Milo (CT), on

  • 03-08-2021 14:44:26 (UTC)
  • 03-08-2021 16:44:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7480, 15.0630 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
Milo CT 5 1087 1087
Zafferana Etnea CT 7 9517 10604
Sant'Alfio CT 7 1582 12186
Santa Venerina CT 10 8592 20778
Giarre CT 11 27659 48437
Mascali CT 12 14282 62719
Piedimonte Etneo CT 12 3963 66682
Riposto CT 13 14838 81520
Linguaglossa CT 13 5403 86923
Fiumefreddo di Sicilia CT 14 9623 96546
Pedara CT 14 14102 110648
Trecastagni CT 15 10910 121558
Nicolosi CT 15 7463 129021
Viagrande CT 15 8563 137584
Castiglione di Sicilia CT 16 3215 140799
Aci Sant'Antonio CT 17 17984 158783
Ragalna CT 17 3924 162707
Calatabiano CT 17 5308 168015
Moio Alcantara ME 17 717 168732
Aci Bonaccorsi CT 17 3524 172256
Aci Catena CT 18 29851 202107
Acireale CT 18 52622 254729
Randazzo CT 18 10900 265629
Francavilla di Sicilia ME 18 3945 269574
Belpasso CT 19 28108 297682
Gaggi ME 19 3184 300866
Tremestieri Etneo CT 19 20589 321455
Malvagna ME 19 733 322188
San Giovanni la Punta CT 19 23060 345248
Motta Camastra ME 19 845 346093
Mascalucia CT 19 31958 378051
Valverde CT 19 7840 385891
Maletto CT 20 3920 389811
San Pietro Clarenza CT 20 7743 397554

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Acireale (52622 inhabitants)
27 Km N of Catania (314555 inhabitants)
65 Km SW of Reggio di Calabria (183035 inhabitants)
66 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
93 Km E of Caltanissetta (63360 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
100 Km NE of Vittoria (63339 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 2.3 2021-08-03
14:44:26		 37.7478 15.0628 9 2021-12-29
11:12:53		 Bollettino Sismico Italiano INGV 98466551
Reviewed
Rev200 		ML 2.1 2021-08-03
14:44:25		 37.76 15.045 6 2021-12-13
14:46:02		 Sala Operativa INGV_OE (Catania) 93620551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-03 14:44:26 ± 0.06
Latitude 37.7478 ± 0.0036
Longitude 15.0628 ± 0.0045
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 98466551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 409
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 59
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.81928
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 98466551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-13 14:45:48

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 93620551
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-08-03 14:53:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-08-03T14:44:41.01 0.3 undecidable manual P 177 87.5457 50 -0.24 62
IV.HMDC.HHZ. 2021-08-03T14:44:41.88 0.3 undecidable manual P 196 90.9423 50 0.12 63
IV.RESU.HHZ. 2021-08-03T14:44:41.37 0.3 undecidable manual P 263 89.0442 50 -0.1 64
IV.MSRU.HHZ. 2021-08-03T14:44:39.01 0.3 undecidable manual P 34 69.2751 50 0.59 59
IV.SSY.HHZ. 2021-08-03T14:44:38.47 0.3 undecidable manual P 179 65.49 50 0.63 58
IV.MILZ.HHZ. 2021-08-03T14:44:37.31 0.6 undecidable manual P 14 59.8956 50 0.32 43
IV.NOV.HHZ. 2021-08-03T14:44:37.31 0.6 undecidable manual S 12 31.746 50 -0.14 47
IV.AIO.HHZ. 2021-08-03T14:44:36.86 0.6 undecidable manual S 31 28.9488 108 0.25 46
IV.MSFR.HHZ. 2021-08-03T14:44:36.16 0.3 undecidable manual P 308 52.0035 50 0.38 64
IV.MCPD.HHZ. 2021-08-03T14:44:35.37 0.3 undecidable manual P 325 50.5161 50 -0.16 68
IV.GALF.HHZ. 2021-08-03T14:44:35.11 0.3 undecidable manual P 265 43.7229 50 0.62 61
IV.MPNC.HHZ. 2021-08-03T14:44:35.53 0.3 undecidable manual P 30 51.0156 50 -0.08 69
IV.ESML.HHZ. 2021-08-03T14:44:34.10 0.6 undecidable manual S 228 21.5673 113 -0.12 48
IV.EPZF.HHZ. 2021-08-03T14:44:34.24 0.3 undecidable manual S 295 19.9689 115 0.54 65
IV.HLNI.HHZ. 2021-08-03T14:44:34.89 0.3 undecidable manual P 201 47.3193 50 -0.16 68
IV.NOV.HHZ. 2021-08-03T14:44:32.24 0.1 undecidable manual P 12 31.746 50 -0.41 89
IV.ECHR.HHE. 2021-08-03T14:44:32.81 0.6 undecidable manual S 243 14.7741 122 0.68 42
IV.ECZM.HHN. 2021-08-03T14:44:32.98 0.6 undecidable manual S 263 14.0748 123 1.08 35
IV.EVRN.HNZ. 2021-08-03T14:44:31.04 0.6 undecidable manual S 135 9.0798 135 0.48 45
IV.EMSG.HHZ. 2021-08-03T14:44:31.12 0.6 undecidable manual S 309 12.7761 126 -0.42 46
IV.ENIC.HHZ. 2021-08-03T14:44:31.49 0.6 undecidable manual S 196 13.3755 124 -0.23 47
IV.ESML.HHZ. 2021-08-03T14:44:31.04 0.6 undecidable manual P 228 21.5673 113 0.25 47
IV.ECTS.HHZ. 2021-08-03T14:44:31.99 0.6 undecidable manual S 19 15.7731 120 -0.41 45
IV.AIO.HHZ. 2021-08-03T14:44:31.75 0.3 undecidable manual P 31 28.9488 108 -0.41 67
IV.EPZF.HHZ. 2021-08-03T14:44:30.33 0.1 negative manual P 295 19.9689 115 -0.15 95
IV.EPIT.HHZ. 2021-08-03T14:44:30.79 0.6 undecidable manual S 356 7.0929 142 0.69 42
IV.ECNE.HHN. 2021-08-03T14:44:30.55 0.6 undecidable manual S 290 5.6943 148 0.73 41
IV.ESLN.HHZ. 2021-08-03T14:44:30.31 0.6 undecidable manual S 232 9.7791 133 -0.43 46
IV.ESAL.HHZ. 2021-08-03T14:44:30.55 0.6 undecidable manual S 83 6.2937 145 0.61 43
IV.EMNR.HHZ. 2021-08-03T14:44:30.49 0.6 undecidable manual S 337 8.2806 138 0.12 49
IV.EPDN.HHZ. 2021-08-03T14:44:30.00 0.6 undecidable manual S 296 4.4955 154 0.38 47
IV.EMPL.HHZ. 2021-08-03T14:44:30.66 0.6 undecidable manual S 227 11.1777 129 -0.43 46
IV.ESCV.HHZ. 2021-08-03T14:44:30.75 0.6 undecidable manual P 270 21.7671 113 -0.06 48
IV.ECBD.HHN. 2021-08-03T14:44:29.67 0.6 undecidable manual S 30 4.1958 156 0.1 49
IV.EMCN.HHN. 2021-08-03T14:44:29.96 0.6 undecidable manual S 332 5.4945 149 0.18 49
IV.EFIU.HHZ. 2021-08-03T14:44:29.43 0.1 negative manual P 70 13.7751 124 0.04 99
IV.EPOZ.HHZ. 2021-08-03T14:44:29.99 0.3 undecidable manual P 127 13.875 123 0.57 65
IV.ESPC.HHN. 2021-08-03T14:44:29.89 0.6 undecidable manual S 207 6.8931 143 -0.16 49
IV.ECHR.HHE. 2021-08-03T14:44:29.55 0.3 undecidable manual P 243 14.7741 122 -0.02 74
IV.ECZM.HHN. 2021-08-03T14:44:29.49 0.3 undecidable manual P 263 14.0748 123 0.05 74
IV.EMSG.HHZ. 2021-08-03T14:44:29.27 0.1 positive manual P 309 12.7761 126 0.03 99
IV.EMFS.HHE. 2021-08-03T14:44:29.95 0.6 undecidable manual S 241 6.4935 145 -0.03 50
IV.ENIC.HHZ. 2021-08-03T14:44:29.15 0.3 undecidable manual P 196 13.3755 124 -0.19 72
IV.EMFO.HHE. 2021-08-03T14:44:29.41 0.6 undecidable manual S 119 2.7972 163 0.01 51
IV.ECTS.HHZ. 2021-08-03T14:44:29.32 0.1 undecidable manual P 19 15.7731 120 -0.41 91
IV.EMNR.HHZ. 2021-08-03T14:44:28.43 0.1 undecidable manual P 337 8.2806 138 -0.13 98
IV.EPDN.HHZ. 2021-08-03T14:44:28.08 0.1 undecidable manual P 296 4.4955 154 -0.05 100
IV.EMFS.HHE. 2021-08-03T14:44:28.18 0.1 undecidable manual P 241 6.4935 145 -0.15 98
IV.EMPL.HHZ. 2021-08-03T14:44:28.71 0.1 undecidable manual P 227 11.1777 129 -0.26 95
IV.EMCN.HHN. 2021-08-03T14:44:28.03 0.1 undecidable manual P 332 5.4945 149 -0.19 97
IV.EVRN.HNZ. 2021-08-03T14:44:28.80 0.1 undecidable manual P 135 9.0798 135 0.13 98
IV.ESPC.HHN. 2021-08-03T14:44:28.09 0.1 undecidable manual P 207 6.8931 143 -0.29 95
IV.EPIT.HHZ. 2021-08-03T14:44:28.35 0.1 positive manual P 356 7.0929 142 -0.05 100
IV.ECNE.HHN. 2021-08-03T14:44:28.15 0.3 undecidable manual P 290 5.6943 148 -0.09 74
IV.ESLN.HHZ. 2021-08-03T14:44:28.47 0.1 undecidable manual P 232 9.7791 133 -0.31 94
IV.ESVO.HHE. 2021-08-03T14:44:28.58 0.1 undecidable manual P 285 10.5783 131 -0.3 94
IV.ESAL.HHZ. 2021-08-03T14:44:28.39 0.1 negative manual P 83 6.2937 145 0.08 99
IV.EMFO.HHE. 2021-08-03T14:44:27.78 0.1 undecidable manual P 119 2.7972 163 -0.22 97
IV.ECBD.HHN. 2021-08-03T14:44:27.95 0.1 undecidable manual P 30 4.1958 156 -0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:2.8 0.01125 1.36 AML other m 2021-08-03T14:44:30.74
IV.ESAL.HHE. ML:3.0 0.01765 1.46 AML other m 2021-08-03T14:44:30.91
IV.EMPL.HHN. ML:2.6 0.005925000000000001 0.4 AML other m 2021-08-03T14:44:31.04
IV.EMPL.HHE. ML:2.6 0.005305 1.5 AML other m 2021-08-03T14:44:31.99
IV.EVRN.HHN. ML:2.9 0.011205 1.7 AML other m 2021-08-03T14:44:32.89
IV.EVRN.HNN. ML:3.0 0.013100000000000002 1.68 AML other m 2021-08-03T14:44:32.88
IV.EMSG.HHE. ML:2.8 0.007925000000000001 0.98 AML other m 2021-08-03T14:44:32.38
IV.EMSG.HHN. ML:3.0 0.01098 0.38 AML other m 2021-08-03T14:44:32.42
IV.EVRN.HHE. ML:2.9 0.01102 1.84 AML other m 2021-08-03T14:44:32.95
IV.EVRN.HNE. ML:2.8 0.009205 1.7 AML other m 2021-08-03T14:44:32.95
IV.ECTS.HHN. ML:2.3 0.001795 1.24 AML other m 2021-08-03T14:44:33.63
IV.ENIC.HHE. ML:2.4 0.0028049999999999998 0.32 AML other m 2021-08-03T14:44:33.90
IV.ENIC.HHN. ML:2.4 0.0029500000000000004 0.36 AML other m 2021-08-03T14:44:34.29
IV.ECTS.HHE. ML:2.4 0.002115 0.9 AML other m 2021-08-03T14:44:34.98
IV.ENIC.HNN. ML:2.4 0.0030549999999999996 0.56 AML other m 2021-08-03T14:44:34.70
IV.EPOZ.HHN. ML:2.5 0.003415 0.42 AML other m 2021-08-03T14:44:35.07
IV.ESML.HHE. ML:2.1 0.000879 1.08 AML other m 2021-08-03T14:44:35.65
IV.EPOZ.HHE. ML:2.5 0.003185 1.46 AML other m 2021-08-03T14:44:35.07
IV.ESML.HHN. ML:2.1 0.0008465 0.5 AML other m 2021-08-03T14:44:36.80
IV.ESML.HNN. ML:2.0 0.0007804999999999999 0.48 AML other m 2021-08-03T14:44:36.80
IV.EPZF.HHE. ML:2.6 0.00269 0.36 AML other m 2021-08-03T14:44:37.23
IV.EPZF.HHN. ML:2.6 0.002855 0.28 AML other m 2021-08-03T14:44:37.16
IV.AIO.HHE. ML:2.0 0.0005805000000000001 0.54 AML other m 2021-08-03T14:44:37.48
IV.NOV.HHE. ML:2.6 0.0020099999999999996 0.28 AML other m 2021-08-03T14:44:37.66
IV.EFIU.HHN. ML:2.2 0.0019249999999999998 0.78 AML other m 2021-08-03T14:44:37.60
IV.EFIU.HHE. ML:2.3 0.00229 1.42 AML other m 2021-08-03T14:44:38.93
IV.ESML.HNE. ML:2.1 0.000859 1.3 AML other m 2021-08-03T14:44:39.83
IV.ENIC.HNE. ML:2.5 0.0037400000000000003 0.64 AML other m 2021-08-03T14:44:39.43
IV.ESCV.HHN. ML:2.4 0.0018549999999999999 0.48 AML other m 2021-08-03T14:44:41.21
IV.AIO.HHN. ML:2.1 0.000621 0.6 AML other m 2021-08-03T14:44:41.45
IV.ESCV.HHE. ML:2.4 0.001585 0.64 AML other m 2021-08-03T14:44:41.81
IV.NOV.HHN. ML:2.6 0.001765 0.54 AML other m 2021-08-03T14:44:44.13
IV.HLNI.HHN. ML:1.5 0.0000899 1.24 AML other m 2021-08-03T14:44:45.87
IV.MPNC.HHE. ML:2.4 0.000689 0.48 AML other m 2021-08-03T14:44:45.95
IV.HLNI.HHE. ML:1.5 0.00009395000000000001 0.88 AML other m 2021-08-03T14:44:46.32
IV.MPNC.HHN. ML:2.2 0.0004055 0.56 AML other m 2021-08-03T14:44:47.53
IV.MSFR.HHN. ML:1.6 0.0001015 1.4 AML other m 2021-08-03T14:44:47.28
IV.MSFR.HHE. ML:1.6 0.00011115 0.58 AML other m 2021-08-03T14:44:48.65
IV.MCPD.HHE. ML:1.7 0.00012050000000000002 0.98 AML other m 2021-08-03T14:44:49.84
IV.MCPD.HHN. ML:1.7 0.00011999999999999999 1.4 AML other m 2021-08-03T14:44:50.22
IV.SSY.HHN. ML:2.8 0.00106 0.62 AML other m 2021-08-03T14:44:50.54
IV.GALF.HHE. ML:2.4 0.000734 1.52 AML other m 2021-08-03T14:44:51.23
IV.SSY.HHE. ML:2.5 0.000612 0.52 AML other m 2021-08-03T14:44:51.37
IV.MSRU.HHN. ML:2.0 0.000186 0.52 AML other m 2021-08-03T14:44:53.53
IV.MSRU.HHE. ML:2.1 0.00020950000000000002 0.76 AML other m 2021-08-03T14:44:54.09
IV.HMDC.HHE. ML:2.1 0.00013350000000000002 0.94 AML other m 2021-08-03T14:44:55.17
IV.GALF.HHN. ML:2.4 0.0007715 0.5 AML other m 2021-08-03T14:44:55.87
IV.HMDC.HHN. ML:2.1 0.00015 1.72 AML other m 2021-08-03T14:44:57.89
IV.RESU.HHN. ML:1.8 0.00007189999999999999 0.92 AML other m 2021-08-03T14:45:10.33
IV.RESU.HHE. ML:1.7 0.00005640000000000001 0.8 AML other m 2021-08-03T14:45:16.68
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