INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 2.1 on date 08-11-2018 and time 17:29:25 (Italy) in region 5 km W Milo (CT)

A magnitude ML 2.1 earthquake occured in region: 5 km W Milo (CT), on

  • 08-11-2018 16:29:25 (UTC)
  • 08-11-2018 17:29:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.72, 15.06 at 1 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 5 1087 1087
Zafferana Etnea CT 5 9517 10604
Sant'Alfio CT 7 1582 12186
Santa Venerina CT 8 8592 20778
Giarre CT 11 27659 48437
Trecastagni CT 12 10910 59347
Pedara CT 12 14102 73449
Mascali CT 12 14282 87731
Riposto CT 12 14838 102569
Nicolosi CT 13 7463 110032
Viagrande CT 13 8563 118595
Piedimonte Etneo CT 14 3963 122558
Aci Sant'Antonio CT 14 17984 140542
Aci Bonaccorsi CT 14 3524 144066
Fiumefreddo di Sicilia CT 15 9623 153689
Linguaglossa CT 15 5403 159092
Aci Catena CT 15 29851 188943
Ragalna CT 15 3924 192867
Acireale CT 15 52622 245489
Tremestieri Etneo CT 16 20589 266078
San Giovanni la Punta CT 16 23060 289138
Belpasso CT 17 28108 317246
Mascalucia CT 17 31958 349204
Valverde CT 17 7840 357044
San Pietro Clarenza CT 17 7743 364787
San Gregorio di Catania CT 18 11966 376753
Gravina di Catania CT 18 25838 402591
Camporotondo Etneo CT 18 5023 407614
Calatabiano CT 18 5308 412922
Sant'Agata li Battiati CT 18 9479 422401
Castiglione di Sicilia CT 19 3215 425616
Biancavilla CT 19 24007 449623
Santa Maria di Licodia CT 20 7641 457264
Moio Alcantara ME 20 717 457981
Aci Castello CT 20 18723 476704

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
67 Km SW of Reggio di Calabria (183035 inhabitants)
68 Km SW of Messina (238439 inhabitants)
76 Km N of Siracusa (122291 inhabitants)
92 Km E of Caltanissetta (63360 inhabitants)
94 Km NE of Ragusa (73313 inhabitants)
98 Km NE of Vittoria (63339 inhabitants)
100 Km N of Modica (54633 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

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
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 100 ML 2.1 2018-11-08
16:29:25
37.72 15.07 1 2018-11-08
16:34:51
Sala Sismica INGV-Roma 62901531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-08 16:29:25 ± 0.25
Latitude 37.72 ± 0.01
Longitude 15.07 ± 0.02
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 62901531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1500
Semi-minor axis of confidence ellipse (meter) 1020
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 1500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.75003
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 62901531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-08 16:34:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RAFF.HHZ. 2018-11-08T16:29:53.64 0.3 undecidable manual S 228 0.75 50 0.92 51
IV.SSY.HHZ. 2018-11-08T16:29:47.04 0.6 undecidable manual S 179 0.5657 50 -0.24 44
IV.GALF.HHZ. 2018-11-08T16:29:42.06 0.3 undecidable manual S 268 0.3948 92 0.96 54
IV.RAFF.HHZ. 2018-11-08T16:29:40.74 0.1 undecidable manual P 228 0.75 50 -0.65 76
IV.MUCR.HHZ. 2018-11-08T16:29:39.31 0.3 undecidable manual S 335 0.3525 92 -0.18 70
MN.VAE.HHZ. 2018-11-08T16:29:39.53 1.0 undecidable manual P 246 0.6187 50 0.39 21
IV.AIO.HHZ. 2018-11-08T16:29:38.84 3.0 undecidable manual S 28 0.2806 92 2.14 0
IV.SSY.HHZ. 2018-11-08T16:29:38.28 0.1 negative manual P 179 0.5657 50 0.04 93
IV.GALF.HHZ. 2018-11-08T16:29:34.40 0.1 undecidable manual P 268 0.3948 92 -0.27 91
IV.MUCR.HHZ. 2018-11-08T16:29:33.19 0.1 positive manual P 335 0.3525 92 -0.55 86
IV.EPZF.HHZ. 2018-11-08T16:29:33.75 0.6 undecidable manual S 301 0.1925 94 0.43 46
IV.AIO.HHZ. 2018-11-08T16:29:32.98 0.1 undecidable manual P 28 0.2806 92 0.85 77
IV.EPZF.HHZ. 2018-11-08T16:29:29.39 0.1 undecidable manual P 301 0.1925 94 -0.79 80
IV.EMCN.HNZ. 2018-11-08T16:29:27.78 0.1 positive manual P 340 0.0719 100 0.27 97
IV.ESLN.HHZ. 2018-11-08T16:29:27.52 0.1 positive manual P 247 0.0782 99 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHN. ML:2 0.000325 0.42 AML other m 2018-11-08T16:29:33.69
IV.EPZF.HHE. ML:2.4 0.00189 0.34 AML other m 2018-11-08T16:29:37.40
IV.EPZF.HHN. ML:2.4 0.00219 1.48 AML other m 2018-11-08T16:29:37.10
IV.MUCR.HHE. ML:2 0.000327 0.52 AML other m 2018-11-08T16:29:39.73
IV.AIO.HHE. ML:1.7 0.000234 1.2 AML other m 2018-11-08T16:29:40.01
IV.AIO.HHN. ML:1.6 0.000214 1.22 AML other m 2018-11-08T16:29:40.87
IV.GALF.HHE. ML:2.3 0.0006865 0.78 AML other m 2018-11-08T16:29:42.79
IV.GALF.HNE. ML:1.9 0.0002535 1.34 AML other m 2018-11-08T16:29:42.80
IV.GALF.HHN. ML:2.4 0.0008095 0.46 AML other m 2018-11-08T16:29:45.31
IV.SSY.HHN. ML:2.5 0.0006715 1.3 AML other m 2018-11-08T16:29:49.04
IV.SSY.HHE. ML:2.2 0.0003395 0.58 AML other m 2018-11-08T16:29:49.89
IV.GALF.HNN. ML:1.9 0.0002765 1.02 AML other m 2018-11-08T16:29:49.45
IV.RAFF.HHE. ML:2.2 0.0001925 1.68 AML other m 2018-11-08T16:29:54.08
IV.RAFF.HHN. ML:2.1 0.000172 1.68 AML other m 2018-11-08T16:29:54.09
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://cnt.rm.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