Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.6 on date 31-10-2020 and time 21:19:10 (Italy) in region 6 km NW Milo (CT)

A magnitude ML 2.6 earthquake occured in region: 6 km NW Milo (CT), on

  • 31-10-2020 20:19:10 (UTC)
  • 31-10-2020 21:19:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7570, 15.0600 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 6 1087 1087
Sant'Alfio CT 8 1582 2669
Zafferana Etnea CT 8 9517 12186
Santa Venerina CT 10 8592 20778
Giarre CT 11 27659 48437
Mascali CT 12 14282 62719
Linguaglossa CT 12 5403 68122
Piedimonte Etneo CT 12 3963 72085
Riposto CT 13 14838 86923
Fiumefreddo di Sicilia CT 14 9623 96546
Castiglione di Sicilia CT 15 3215 99761
Pedara CT 15 14102 113863
Trecastagni CT 16 10910 124773
Moio Alcantara ME 16 717 125490
Nicolosi CT 16 7463 132953
Viagrande CT 17 8563 141516
Calatabiano CT 17 5308 146824
Randazzo CT 17 10900 157724
Ragalna CT 18 3924 161648
Francavilla di Sicilia ME 18 3945 165593
Aci Sant'Antonio CT 18 17984 183577
Aci Bonaccorsi CT 18 3524 187101
Malvagna ME 18 733 187834
Gaggi ME 18 3184 191018
Motta Camastra ME 19 845 191863
Aci Catena CT 19 29851 221714
Acireale CT 19 52622 274336
Maletto CT 19 3920 278256
Belpasso CT 20 28108 306364
Santa Domenica Vittoria ME 20 980 307344
Tremestieri Etneo CT 20 20589 327933

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
65 Km SW of Reggio di Calabria (183035 inhabitants)
65 Km SW of Messina (238439 inhabitants)
80 Km N of Siracusa (122291 inhabitants)
93 Km E of Caltanissetta (63360 inhabitants)
97 Km N of Ragusa (73313 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.6 2020-10-31
20:19:10		 37.757 15.0597 10 2021-02-26
14:56:16		 Bollettino Sismico Italiano INGV 86379481
Reviewed
Rev200 		ML 2.5 2020-10-31
20:19:09		 37.759 15.031 5 2021-01-19
14:26:38		 Sala Operativa INGV_OE (Catania) 84333801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 20:19:10 ± 0.07
Latitude 37.7570 ± 0.0045
Longitude 15.0597 ± 0.0068
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86379481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 638
Semi-minor axis of confidence ellipse (meter) 509
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 1.06839
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:2.6

Field Value
Value 2.6
Uncertainty 0.4
Num. used stations 66
Type of magnitude ML
Reference to an origin 86379481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-19 14:26:12

ML:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 84333801
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-31 20:29:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCIAR.HHZ. 2020-10-31T20:19:31.64 0.6 undecidable manual P 280 116.5944 50 1.71 20
IV.JOPP.HHZ. 2020-10-31T20:19:30.40 0.6 undecidable manual P 37 118.5924 50 0.15 39
IV.HPAC.HHZ. 2020-10-31T20:19:29.41 0.3 undecidable manual P 181 116.2947 50 -0.49 55
IV.IACL.HHZ. 2020-10-31T20:19:28.10 0.6 undecidable manual P 325 105.8163 50 -0.17 40
IV.IFIL.HHZ. 2020-10-31T20:19:27.59 0.6 undecidable manual P 335 99.0231 50 0.37 39
IV.CPTP.HHZ. 2020-10-31T20:19:27.81 0.6 undecidable manual P 244 87.8454 50 2.3 12
IV.HMDC.HHZ. 2020-10-31T20:19:26.09 0.3 undecidable manual P 195 91.8414 50 -0.02 64
IV.PLLN.EHZ. 2020-10-31T20:19:26.77 0.6 undecidable manual P 288 84.4488 50 1.8 20
MN.CEL.HHZ. 2020-10-31T20:19:26.15 0.3 undecidable manual P 52 91.8414 50 0.03 64
IV.RAFF.HHZ. 2020-10-31T20:19:25.24 0.3 undecidable manual P 226 85.3479 50 0.12 63
IV.HAVL.HHZ. 2020-10-31T20:19:25.19 0.3 undecidable manual P 176 88.6446 50 -0.44 59
IV.IVPL.HHZ. 2020-10-31T20:19:22.98 0.3 undecidable manual P 354 69.0753 50 0.37 62
IV.SSY.HHZ. 2020-10-31T20:19:22.04 0.3 undecidable manual P 179 66.4779 50 -0.17 65
IV.MILZ.HHZ. 2020-10-31T20:19:21.22 0.3 undecidable manual P 15 58.9965 50 0.16 66
IV.MPNC.HHZ. 2020-10-31T20:19:19.50 0.3 undecidable manual P 31 50.2164 50 -0.21 67
IV.HAGA.HHZ. 2020-10-31T20:19:19.82 0.3 undecidable manual P 171 53.0025 50 -0.32 65
IV.GALF.HHZ. 2020-10-31T20:19:19.48 0.1 positive manual P 263 43.5231 50 0.8 75
IV.MSFR.HHZ. 2020-10-31T20:19:19.84 0.3 undecidable manual P 307 51.2154 50 -0.01 69
IV.EPZF.HHZ. 2020-10-31T20:19:18.05 0.6 undecidable manual S 293 19.2696 117 0.18 47
IV.HLNI.HHZ. 2020-10-31T20:19:18.73 0.3 undecidable manual P 200 48.2184 50 -0.67 59
IV.MUCR.HHZ. 2020-10-31T20:19:17.23 0.1 positive manual P 333 35.6421 50 -0.23 91
IV.ECHR.HHE. 2020-10-31T20:19:17.27 0.6 undecidable manual S 239 15.0738 123 0.67 41
IV.ECTS.HHZ. 2020-10-31T20:19:16.38 0.6 undecidable manual S 21 14.874 123 -0.16 48
IV.ENIC.HHZ. 2020-10-31T20:19:16.30 0.6 undecidable manual S 194 14.3745 124 -0.09 48
IV.NOV.HHZ. 2020-10-31T20:19:16.58 0.1 negative manual P 13 30.747 50 -0.13 93
IV.AIO.HHZ. 2020-10-31T20:19:16.05 0.1 negative manual P 33 28.1496 50 -0.26 91
IV.EMSG.HHZ. 2020-10-31T20:19:15.88 0.6 undecidable manual S 306 11.9769 129 0.16 48
IV.EVRN.HNZ. 2020-10-31T20:19:15.95 0.6 undecidable manual S 138 10.0788 134 0.72 41
IV.EPZF.HHZ. 2020-10-31T20:19:14.27 0.3 undecidable manual P 293 19.2696 117 -0.43 67
IV.EMCN.HNZ. 2020-10-31T20:19:14.04 0.6 undecidable manual S 329 4.3956 156 -0.05 50
IV.EPOZ.HHZ. 2020-10-31T20:19:14.76 0.1 positive manual P 130 14.7741 123 0.85 77
IV.ECBD.HHN. 2020-10-31T20:19:14.34 0.6 undecidable manual S 42 3.4965 160 0.38 46
IV.ESLN.HHZ. 2020-10-31T20:19:14.76 0.6 undecidable manual S 227 10.2786 133 -0.53 44
IV.EPIT.HHN. 2020-10-31T20:19:14.54 0.6 undecidable manual S 358 5.994 148 0.19 48
IV.EFIU.HHE. 2020-10-31T20:19:13.95 0.1 undecidable manual P 75 13.6752 125 0.21 95
IV.EMSG.HHZ. 2020-10-31T20:19:13.32 0.1 positive manual P 306 11.9769 129 -0.14 96
IV.ECHR.HHE. 2020-10-31T20:19:13.90 0.1 undecidable manual P 239 15.0738 123 -0.07 97
IV.EVRN.HNZ. 2020-10-31T20:19:13.36 0.1 undecidable manual P 138 10.0788 134 0.18 96
IV.ECTS.HHZ. 2020-10-31T20:19:13.62 0.1 negative manual P 21 14.874 123 -0.32 92
IV.ENIC.HHZ. 2020-10-31T20:19:13.67 0.3 undecidable manual P 194 14.3745 124 -0.17 71
IV.ECNE.HHN. 2020-10-31T20:19:12.49 0.3 undecidable manual P 280 5.1948 152 -0.09 74
IV.EMCN.HNZ. 2020-10-31T20:19:12.17 0.1 negative manual P 329 4.3956 156 -0.35 93
IV.ECBD.HHN. 2020-10-31T20:19:12.42 0.1 undecidable manual P 42 3.4965 160 -0.03 100
IV.ESLN.HHZ. 2020-10-31T20:19:12.80 0.1 negative manual P 227 10.2786 133 -0.41 91
IV.EPIT.HHN. 2020-10-31T20:19:12.50 0.1 undecidable manual P 358 5.994 148 -0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMCN.HHN. ML:3.3 0.03540000000000001 0.7 AML other m 2020-10-31T20:19:14.32
IV.EMCN.HNN. ML:3.3 0.03565 0.34 AML other m 2020-10-31T20:19:14.85
IV.ESLN.HHN. ML:2.4 0.00343 0.34 AML other m 2020-10-31T20:19:14.99
IV.EMCN.HNE. ML:3.3 0.037149999999999996 0.76 AML other m 2020-10-31T20:19:15.08
IV.ESLN.HHE. ML:2.6 0.005025 1.52 AML other m 2020-10-31T20:19:15.90
IV.EMSG.HHN. ML:3.3 0.025049999999999996 0.44 AML other m 2020-10-31T20:19:16.32
IV.EMCN.HHE. ML:3.3 0.03825 1.5 AML other m 2020-10-31T20:19:16.16
IV.ECTS.HHE. ML:2.5 0.003335 0.68 AML other m 2020-10-31T20:19:16.80
IV.EVRN.HNN. ML:3.0 0.0145 0.86 AML other m 2020-10-31T20:19:17.44
IV.ECTS.HHN. ML:2.5 0.00333 0.3 AML other m 2020-10-31T20:19:17.04
IV.ENIC.HNN. ML:2.9 0.008095000000000001 0.2 AML other m 2020-10-31T20:19:18.32
IV.EVRN.HHN. ML:3.1 0.016649999999999998 0.58 AML other m 2020-10-31T20:19:18.52
IV.EVRN.HNE. ML:3.1 0.015050000000000001 0.5 AML other m 2020-10-31T20:19:18.52
IV.ENIC.HNE. ML:2.9 0.008969999999999999 1.82 AML other m 2020-10-31T20:19:19.00
IV.EMSG.HHE. ML:3.0 0.013100000000000002 0.62 AML other m 2020-10-31T20:19:19.31
IV.ENIC.HHN. ML:2.9 0.007515000000000001 1 AML other m 2020-10-31T20:19:19.47
IV.EPZF.HHE. ML:2.7 0.00413 1.02 AML other m 2020-10-31T20:19:19.06
IV.ENIC.HHE. ML:3.0 0.00929 0.22 AML other m 2020-10-31T20:19:19.88
IV.EPZF.HHN. ML:2.8 0.005195 1.62 AML other m 2020-10-31T20:19:20.88
IV.EPOZ.HHN. ML:2.9 0.00741 0.76 AML other m 2020-10-31T20:19:20.42
IV.EVRN.HHE. ML:2.9 0.01066 1.52 AML other m 2020-10-31T20:19:20.93
IV.EPOZ.HHE. ML:2.8 0.006395 0.32 AML other m 2020-10-31T20:19:21.35
IV.AIO.HHE. ML:2.3 0.0009955 0.48 AML other m 2020-10-31T20:19:23.37
IV.AIO.HHN. ML:2.4 0.0012850000000000001 0.24 AML other m 2020-10-31T20:19:23.52
IV.NOV.HHE. ML:3.0 0.004435000000000001 0.3 AML other m 2020-10-31T20:19:24.38
IV.NOV.HHN. ML:2.8 0.003115 1.06 AML other m 2020-10-31T20:19:24.01
IV.MUCR.HHN. ML:2.2 0.000731 1.1 AML other m 2020-10-31T20:19:26.65
IV.MUCR.HHE. ML:2.2 0.0006955 0.6 AML other m 2020-10-31T20:19:29.04
IV.GALF.HHE. ML:2.8 0.00197 0.44 AML other m 2020-10-31T20:19:29.84
IV.MSFR.HHE. ML:1.8 0.0001625 0.68 AML other m 2020-10-31T20:19:30.24
IV.MSFR.HHN. ML:1.8 0.000179 1.26 AML other m 2020-10-31T20:19:30.94
IV.MPNC.HHN. ML:2.6 0.0011 0.24 AML other m 2020-10-31T20:19:31.72
IV.MILZ.HHN. ML:2.7 0.001038 0.38 AML other m 2020-10-31T20:19:31.85
IV.GALF.HNE. ML:1.9 0.0002255 1.42 AML other m 2020-10-31T20:19:32.73
IV.HLNI.HHE. ML:1.7 0.00012534999999999998 0.38 AML other m 2020-10-31T20:19:32.17
IV.MPNC.HHE. ML:2.5 0.00085 0.34 AML other m 2020-10-31T20:19:32.79
IV.GALF.HHN. ML:2.7 0.001625 0.48 AML other m 2020-10-31T20:19:32.64
IV.GALF.HNN. ML:1.8 0.000222 0.5 AML other m 2020-10-31T20:19:32.64
IV.SSY.HHN. ML:3.0 0.0016600000000000002 1.76 AML other m 2020-10-31T20:19:34.89
IV.MILZ.HHE. ML:2.9 0.0016400000000000002 0.36 AML other m 2020-10-31T20:19:35.61
IV.SSY.HHE. ML:2.6 0.000704 0.62 AML other m 2020-10-31T20:19:36.09
IV.HLNI.HHN. ML:1.7 0.000128 1.48 AML other m 2020-10-31T20:19:36.82
IV.IVPL.HHE. ML:2.8 0.0009519999999999999 0.44 AML other m 2020-10-31T20:19:38.39
IV.HAVL.HHE. ML:2.4 0.0002855 0.28 AML other m 2020-10-31T20:19:39.00
IV.RAFF.HHE. ML:2.5 0.000423 0.42 AML other m 2020-10-31T20:19:39.16
IV.HAVL.HHN. ML:2.4 0.00028649999999999997 0.22 AML other m 2020-10-31T20:19:39.26
IV.RAFF.HHN. ML:2.3 0.0002515 1.12 AML other m 2020-10-31T20:19:39.28
IV.HMDC.HHE. ML:2.2 0.000179 1.62 AML other m 2020-10-31T20:19:39.06
IV.HMDC.HHN. ML:2.2 0.0001865 0.2 AML other m 2020-10-31T20:19:39.99
IV.IVPL.HHN. ML:2.8 0.0009895000000000001 0.48 AML other m 2020-10-31T20:19:40.90
MN.CEL.HNE. ML:2.1 0.00014800000000000002 0.94 AML other m 2020-10-31T20:19:42.31
IV.IFIL.HHE. ML:2.9 0.0008085 0.34 AML other m 2020-10-31T20:19:42.67
MN.CEL.HHN. ML:2.2 0.0001985 1.02 AML other m 2020-10-31T20:19:43.13
MN.CEL.HNN. ML:2.3 0.000221 1.04 AML other m 2020-10-31T20:19:43.66
IV.IFIL.HHN. ML:2.5 0.0003235 0.48 AML other m 2020-10-31T20:19:44.18
IV.PLLN.EHN. ML:2.6 0.0004805 0.5 AML other m 2020-10-31T20:19:45.84
IV.PLLN.EHE. ML:2.4 0.0003115 1.1 AML other m 2020-10-31T20:19:46.12
MN.CEL.HHE. ML:2.0 0.00011899999999999999 0.86 AML other m 2020-10-31T20:19:50.74
IV.JOPP.HHE. ML:2.1 0.00009875 0.42 AML other m 2020-10-31T20:19:50.29
IV.JOPP.HHN. ML:2.2 0.00013000000000000002 1.28 AML other m 2020-10-31T20:19:51.64
IV.IACL.HHE. ML:2.3 0.000184 1.16 AML other m 2020-10-31T20:19:51.13
IV.HPAC.HHE. ML:2.3 0.00016999999999999999 0.58 AML other m 2020-10-31T20:19:52.43
IV.HPAC.HHN. ML:2.4 0.00021300000000000003 0.64 AML other m 2020-10-31T20:19:52.64
IV.IACL.HHN. ML:2.5 0.0002595 0.44 AML other m 2020-10-31T20:19:54.33
IV.SCIAR.HHN. ML:2.1 0.00010350000000000001 1.54 AML other m 2020-10-31T20:19:54.80
IV.SCIAR.HHE. ML:2.0 0.0000775 0.4 AML other m 2020-10-31T20:19:55.21
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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