Earthquake with magnitude of ML 3.1 on date 23-10-2018 and time 22:47:54 (UTC) in region 11 km NW Milo (CT)

A magnitude ML 3.1 earthquake occured in region: 11 km NW Milo (CT), on

  • 23-10-2018 22:47:54 (UTC)
  • 24-10-2018 00:47:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.78, 15.01 at 25 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.

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 11 1087 1087
Randazzo CT 12 10900 11987
Sant'Alfio CT 12 1582 13569
Zafferana Etnea CT 12 9517 23086
Linguaglossa CT 14 5403 28489
Maletto CT 14 3920 32409
Moio Alcantara ME 14 717 33126
Santa Venerina CT 15 8592 41718
Piedimonte Etneo CT 15 3963 45681
Castiglione di Sicilia CT 15 3215 48896
Bronte CT 16 19172 68068
Santa Domenica Vittoria ME 16 980 69048
Malvagna ME 16 733 69781
Giarre CT 16 27659 97440
Mascali CT 17 14282 111722
Roccella Valdemone ME 17 666 112388
Fiumefreddo di Sicilia CT 18 9623 122011
Francavilla di Sicilia ME 18 3945 125956
Ragalna CT 18 3924 129880
Riposto CT 18 14838 144718
Nicolosi CT 18 7463 152181
Pedara CT 18 14102 166283
Trecastagni CT 19 10910 177193
Motta Camastra ME 19 845 178038
Biancavilla CT 20 24007 202045
Calatabiano CT 20 5308 207353

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
31 Km N of Catania (314555 inhabitants)
67 Km SW of Messina (238439 inhabitants)
67 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km N of Siracusa (122291 inhabitants)
89 Km E of Caltanissetta (63360 inhabitants)
98 Km N of Ragusa (73313 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap *

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap *

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap *

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 3.1 2018-10-23
22:47:54
37.78 15.01 25 2019-06-04
09:16:05
Bollettino Sismico Italiano INGV 64575091
Rev 200 ML 3.1 2018-10-23
22:47:54
37.76 15.01 12 2019-04-28
17:28:45
Sala Operativa INGV-OE (Catania) 62260131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-23 22:47:54 ± 0.08
Latitude 37.78 ± 0.00
Longitude 15.01 ± 0.01
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 64575091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 599
Semi-minor axis of confidence ellipse (meter) 90
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.1295
Epicentral distance of station farthest from the epicenter (degree) 2.30047
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:3.1

Field Value
Value 3.1
Uncertainty 0.2
Num. used stations 39
Type of magnitude ML
Reference to an origin 64575091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-11 15:01:15

ML:3.1

Field Value
Value 3.1
Uncertainty 0
Num. used stations
Type of magnitude ML
Reference to an origin 62260131
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2018-10-23 23:10:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.CUC.HHN. 2018-10-23T22:48:30.96 0.6 undecidable manual P 16 2.3005 54 -0.19 21
IV.CET2.HHE. 2018-10-23T22:48:25.33 0.3 undecidable manual P 23 1.8976 54 -0.26 42
IV.SPS2.HHZ. 2018-10-23T22:48:24.32 0.6 undecidable manual P 34 1.8337 54 -0.39 28
IV.CAR1.HHZ. 2018-10-23T22:48:22.95 0.6 undecidable manual P 32 1.7474 54 -0.56 28
IV.USI.HHE. 2018-10-23T22:48:22.48 0.6 undecidable manual P 303 1.7114 54 -0.54 30
MN.CLTB.HHN. 2018-10-23T22:48:21.39 3.0 undecidable manual P 1.4335 2.21 0
IV.CORL.HHZ. 2018-10-23T22:48:18.81 1.0 undecidable manual P 275 1.3517 54 0.76 16
IV.PLAC.HHZ. 2018-10-23T22:48:18.36 0.3 undecidable manual P 59 1.3076 54 0.92 46
IV.MPG.SHE. 2018-10-23T22:48:17.86 0.6 undecidable manual P 287 1.3553 54 -0.24 38
IV.SSY.HHE. 2018-10-23T22:48:15.55 0.3 undecidable manual S 175 0.6232 104 0.19 69
IV.AGST.EHZ. 2018-10-23T22:48:13.24 0.3 undecidable manual S 162 0.5495 106 -0.01 71
IV.JOPP.HHN. 2018-10-23T22:48:13.78 0.3 undecidable manual P 39 1.0756 97 -0.17 62
IV.HPAC.HHN. 2018-10-23T22:48:13.54 0.1 undecidable manual P 179 1.0702 97 -0.32 80
IV.ALJA.HHE. 2018-10-23T22:48:13.51 0.3 undecidable manual P 269 0.9929 98 0.95 48
IV.HAGA.HHZ. 2018-10-23T22:48:12.07 0.3 undecidable manual S 167 0.5072 107 0.04 72
IV.SOI.EHZ. 2018-10-23T22:48:11.00 0.6 undecidable manual P 70 0.8741 99 0.46 41
IV.IACL.HHN. 2018-10-23T22:48:10.89 0.6 undecidable manual P 326 0.9128 99 -0.3 42
IV.MPNC.HHZ. 2018-10-23T22:48:10.41 0.6 undecidable manual S 36 0.456 109 -0.19 47
IV.GMB.BHZ. 2018-10-23T22:48:09.17 0.3 undecidable manual P 59 0.7527 101 0.67 58
IV.RESU.HHZ. 2018-10-23T22:48:09.74 0.6 undecidable manual P 260 0.7653 101 1.03 33
IV.RAFF.HHZ. 2018-10-23T22:48:08.72 0.1 negative manual P 223 0.7572 101 0.15 89
IV.CSLB.HHZ. 2018-10-23T22:48:08.87 0.6 undecidable manual P 282 0.768 101 0.11 44
IV.ILLI.HHZ. 2018-10-23T22:48:07.29 0.6 undecidable manual P 356 0.6682 103 0.21 45
IV.MTTG.HHZ. 2018-10-23T22:48:06.22 0.3 undecidable manual P 67 0.5882 104 0.47 65
IV.MNO.SHZ. 2018-10-23T22:48:06.26 0.6 undecidable manual S 301 0.2914 121 0.08 49
IV.IVPL.HHZ. 2018-10-23T22:48:06.10 0.1 negative manual P 358 0.5971 104 0.2 91
IV.SSY.HHE. 2018-10-23T22:48:06.09 0.1 undecidable manual P 175 0.6232 104 -0.23 90
IV.NOV.HHE. 2018-10-23T22:48:05.02 0.3 undecidable manual S 22 0.268 124 -0.56 68
IV.MUCR.HHN. 2018-10-23T22:48:05.99 1.0 undecidable manual S 338 0.2851 122 -0.01 25
IV.HAGA.HHZ. 2018-10-23T22:48:04.05 0.1 undecidable manual P 167 0.5072 107 -0.37 89
IV.MILZ.HHZ. 2018-10-23T22:48:04.64 0.3 undecidable manual P 19 0.5216 107 -0.01 72
IV.AGST.EHZ. 2018-10-23T22:48:04.66 0.1 negative manual P 162 0.5495 106 -0.46 86
IV.EPOZ.HHN. 2018-10-23T22:48:04.25 0.3 undecidable manual S 127 0.1772 137 0.73 65
IV.ESML.HHZ. 2018-10-23T22:48:03.69 0.6 undecidable manual S 213 0.1916 134 -0.13 50
IV.MPNC.HHZ. 2018-10-23T22:48:03.43 0.1 negative manual P 36 0.456 109 -0.15 95
IV.EPZF.HHE. 2018-10-23T22:48:02.70 0.6 undecidable manual S 290 0.1295 146 0.07 51
IV.MNO.SHZ. 2018-10-23T22:48:01.28 0.1 undecidable manual P 301 0.2914 121 0.25 95
IV.NOV.HHE. 2018-10-23T22:48:00.33 0.1 negative manual P 22 0.268 124 -0.36 95
IV.MUCR.HHN. 2018-10-23T22:48:00.59 0.1 undecidable manual P 338 0.2851 122 -0.34 95
IV.ESML.HHZ. 2018-10-23T22:47:59.50 0.1 negative manual P 213 0.1916 134 -0.17 100
IV.EPOZ.HHN. 2018-10-23T22:47:59.69 0.1 positive manual P 127 0.1772 137 0.19 100
IV.EPZF.HHE. 2018-10-23T22:47:58.74 0.1 positive manual P 290 0.1295 146 -0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:3.7 0.027715885 0.4224 AML other m 2018-10-23T22:48:03.46
IV.EPZF.HHN. ML:3.5 0.01928296 0.3072 AML other m 2018-10-23T22:48:03.97
IV.NOV.HHN. ML:3 0.0041301515 1.0752 AML other m 2018-10-23T22:48:06.29
IV.NOV.HHE. ML:3.3 0.007289971 0.4608 AML other m 2018-10-23T22:48:06.52
IV.ESML.HHE. ML:3.3 0.010105912 0.2944 AML other m 2018-10-23T22:48:07.68
IV.MNO.SHN. ML:0 0.006155919 0.6016 AML other m 2018-10-23T22:48:07.65
IV.MNO.SHE. ML:0 0.0080296515 0.5248 AML other m 2018-10-23T22:48:08.17
IV.MUCR.HHN. ML:3 0.0031647475 0.64 AML other m 2018-10-23T22:48:09.48
IV.ESML.HHN. ML:3.3 0.0101319425 0.4992 AML other m 2018-10-23T22:48:10.58
IV.MUCR.HHE. ML:2.7 0.0019504825 0.448 AML other m 2018-10-23T22:48:10.70
IV.MPNC.HHE. ML:3.5 0.0073304235 0.4736 AML other m 2018-10-23T22:48:12.14
IV.HAGA.HHE. ML:3.2 0.003041644 0.4736 AML other m 2018-10-23T22:48:12.64
IV.MPNC.HHN. ML:3.6 0.008817408 0.5248 AML other m 2018-10-23T22:48:12.72
IV.AGST.EHN. ML:3.4 0.0049459945 0.384 AML other m 2018-10-23T22:48:13.57
IV.AGST.EHE. ML:3.4 0.0052473865 0.1792 AML other m 2018-10-23T22:48:13.89
IV.MILZ.HHE. ML:3 0.00214578 0.4736 AML other m 2018-10-23T22:48:15.01
IV.HAGA.HHN. ML:2.9 0.001738535 0.3328 AML other m 2018-10-23T22:48:16.20
IV.IVPL.HHE. ML:3.1 0.0020844195 0.4992 AML other m 2018-10-23T22:48:17.72
IV.MILZ.HHN. ML:2.9 0.001530373 0.6784 AML other m 2018-10-23T22:48:17.50
IV.SSY.HHE. ML:3.2 0.002440101 0.5248 AML other m 2018-10-23T22:48:18.87
IV.MTTG.HHN. ML:3 0.0016673935 0.64 AML other m 2018-10-23T22:48:21.89
IV.RAFF.HHN. ML:3.2 0.0021501875 0.384 AML other m 2018-10-23T22:48:22.04
IV.SSY.HHN. ML:3.4 0.00357572 0.2176 AML other m 2018-10-23T22:48:22.11
IV.RAFF.HHE. ML:3.6 0.0043212755 0.4608 AML other m 2018-10-23T22:48:22.02
IV.GMB.BHN. ML:3.2 0.0020676985 0.512 AML other m 2018-10-23T22:48:23.86
IV.CSLB.HHN. ML:2.6 0.00049621485 0.9216 AML other m 2018-10-23T22:48:23.98
IV.IVPL.HHN. ML:3.2 0.0028754925 0.5632 AML other m 2018-10-23T22:48:25.98
IV.SOI.EHN. ML:2.9 0.00075902365 0.5888 AML other m 2018-10-23T22:48:26.45
IV.SOI.EHE. ML:2.8 0.0006482816 0.5632 AML other m 2018-10-23T22:48:27.09
IV.IACL.HHN. ML:3 0.00095451735 0.64 AML other m 2018-10-23T22:48:27.26
IV.GMB.BHE. ML:3.4 0.002878033 0.3968 AML other m 2018-10-23T22:48:27.48
IV.CSLB.HHE. ML:2.4 0.0003118691 0.96 AML other m 2018-10-23T22:48:27.53
IV.MTTG.HHE. ML:3 0.001541161 0.5504 AML other m 2018-10-23T22:48:28.28
IV.JOPP.HHE. ML:2.8 0.000411887 0.6144 AML other m 2018-10-23T22:48:31.65
IV.JOPP.HHN. ML:2.8 0.000505569 0.4864 AML other m 2018-10-23T22:48:31.93
IV.IACL.HHE. ML:3 0.00108237915 0.64 AML other m 2018-10-23T22:48:32.72
IV.HPAC.HHE. ML:3.3 0.0014973835 0.3968 AML other m 2018-10-23T22:48:35.81
IV.PLAC.HNE. ML:3 0.0004750239 0.5632 AML other m 2018-10-23T22:48:42.71
IV.PLAC.HHN. ML:3 0.0004903256 0.5632 AML other m 2018-10-23T22:48:42.99
IV.PLAC.HHE. ML:2.9 0.0003959164 0.7168 AML other m 2018-10-23T22:48:46.25
IV.PLAC.HNN. ML:2.9 0.00038035985 0.7424 AML other m 2018-10-23T22:48:46.26
IV.SPS2.HHN. ML:2.5 9.3797235E-5 0.6656 AML other m 2018-10-23T22:48:55.46
IV.CAR1.HHE. ML:3.2 0.00051401525 0.6784 AML other m 2018-10-23T22:48:57.23
IV.CAR1.HNE. ML:3.2 0.0004955452 0.7168 AML other m 2018-10-23T22:48:57.25
IV.SPS2.HHE. ML:2.4 6.688375E-5 0.6016 AML other m 2018-10-23T22:48:57.50
IV.CAR1.HHN. ML:3 0.0003265892 0.8192 AML other m 2018-10-23T22:48:58.54
IV.CAR1.HNN. ML:3.1 0.00037728185 0.9344 AML other m 2018-10-23T22:48:58.98
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol 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 full SEED format Download