ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 2.0 on date 04-04-2018 and time 03:11:39 (Italy) in region 10 km W Milo (CT)

A magnitude ML 2.0 earthquake occured in region: 10 km W Milo (CT), on

  • 04-04-2018 01:11:39 (UTC)
  • 04-04-2018 03:11:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.74, 15.01 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.

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 10 1087 1087
Zafferana Etnea CT 10 9517 10604
Sant'Alfio CT 12 1582 12186
Santa Venerina CT 13 8592 20778
Ragalna CT 14 3924 24702
Nicolosi CT 15 7463 32165
Pedara CT 15 14102 46267
Trecastagni CT 15 10910 57177
Giarre CT 16 27659 84836
Maletto CT 16 3920 88756
Randazzo CT 16 10900 99656
Linguaglossa CT 16 5403 105059
Bronte CT 16 19172 124231
Mascali CT 17 14282 138513
Piedimonte Etneo CT 17 3963 142476
Viagrande CT 17 8563 151039
Biancavilla CT 17 24007 175046
Belpasso CT 17 28108 203154
Riposto CT 17 14838 217992
Santa Maria di Licodia CT 18 7641 225633
Moio Alcantara ME 18 717 226350
Adrano CT 18 36122 262472
Castiglione di Sicilia CT 18 3215 265687
Aci Bonaccorsi CT 18 3524 269211
Fiumefreddo di Sicilia CT 18 9623 278834
Aci Sant'Antonio CT 19 17984 296818
San Pietro Clarenza CT 19 7743 304561
Mascalucia CT 19 31958 336519
Tremestieri Etneo CT 20 20589 357108
Aci Catena CT 20 29851 386959
Camporotondo Etneo CT 20 5023 391982
Santa Domenica Vittoria ME 20 980 392962
Malvagna ME 20 733 393695
San Giovanni la Punta CT 20 23060 416755

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km SW of Messina (238439 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
88 Km E of Caltanissetta (63360 inhabitants)
94 Km N of Ragusa (73313 inhabitants)
98 Km NE of Vittoria (63339 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.
Significant earthquakes since 1000 AD until 2006

Significant earthquakes since 1000 AD until 2006 *

This map shows the epicenters of the historical earthquakes catalogue CPT11 (Catalogo Parametrico dei Terremoti Italiani, 2011 version) with estimated magnitude ≥ 5.0 since 1000 AD until 2006. 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
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 2.0 2018-04-04
01:11:39
37.74 15.01 9 2019-04-24
14:49:34
Bollettino Sismico Italiano INGV 57305881
Rev 100 ML 2.0 2018-04-04
01:11:39
37.75 15.01 9 2018-04-04
01:18:41
Sala Sismica INGV-Roma 55091531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-04-04 01:11:39 ± 0.1
Latitude 37.74 ± 0.01
Longitude 15.01 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 57305881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 728
Semi-minor axis of confidence ellipse (meter) 310
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.51711
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 55091531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-04-04 01:18:41

ML:2

Field Value
Value 2
Uncertainty 0.1
Num. used stations 11
Type of magnitude ML
Reference to an origin 57305881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-28 07:01:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.AGST.EHE. 2018-04-04T01:11:58.22 0.3 undecidable manual S 160 0.5171 50 0.35 67
IV.HAGA.HHZ. 2018-04-04T01:11:56.70 0.3 undecidable manual S 166 0.4739 50 0.13 71
IV.MUCR.HHZ. 2018-04-04T01:11:52.06 0.1 undecidable manual S 340 0.3166 50 0.14 98
IV.AIO.HHZ. 2018-04-04T01:11:51.35 0.1 undecidable manual S 38 0.2869 50 0.3 94
IV.NOV.HHZ. 2018-04-04T01:11:50.85 0.1 undecidable manual S 20 0.3004 50 -0.59 87
IV.AGST.EHE. 2018-04-04T01:11:50.00 0.3 undecidable manual P 160 0.5171 50 -0.14 70
IV.GALF.HHZ. 2018-04-04T01:11:48.05 0.1 undecidable manual P 265 0.3516 50 0.75 82
IV.HLNI.HHZ. 2018-04-04T01:11:48.05 0.1 undecidable manual P 195 0.4101 50 -0.26 92
IV.HAGA.HHZ. 2018-04-04T01:11:48.69 0.3 undecidable manual P 166 0.4739 50 -0.7 60
IV.EPOZ.HHZ. 2018-04-04T01:11:46.85 0.1 undecidable manual S 117 0.1592 116 0.41 94
IV.MUCR.HHZ. 2018-04-04T01:11:46.71 0.1 negative manual P 340 0.3166 50 0 100
IV.EPZF.HHZ. 2018-04-04T01:11:46.61 0.1 undecidable manual S 304 0.1439 119 0.7 86
IV.AIO.HHZ. 2018-04-04T01:11:46.11 0.1 undecidable manual P 38 0.2869 50 -0.09 99
IV.ESML.HHZ. 2018-04-04T01:11:46.85 0.1 undecidable manual S 219 0.1628 116 0.29 97
IV.NOV.HHZ. 2018-04-04T01:11:46.44 0.1 undecidable manual P 20 0.3004 50 0.01 100
IV.EMSG.HHZ. 2018-04-04T01:11:44.47 0.1 undecidable manual S 328 0.089 132 0.28 98
IV.ESML.HHZ. 2018-04-04T01:11:43.89 0.1 undecidable manual P 219 0.1628 116 0.28 97
IV.EPOZ.HHZ. 2018-04-04T01:11:43.97 0.1 positive manual P 117 0.1592 116 0.43 93
IV.ESLN.HHZ. 2018-04-04T01:11:42.78 0.1 undecidable manual S 208 0.0576 144 -0.59 92
IV.EPZF.HHZ. 2018-04-04T01:11:42.79 0.1 undecidable manual P 304 0.1439 119 -0.45 94
IV.ESLN.HHZ. 2018-04-04T01:11:41.03 0.1 positive manual P 208 0.0576 144 -0.74 86
IV.EMSG.HHZ. 2018-04-04T01:11:41.56 0.1 negative manual P 328 0.089 132 -0.68 88
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:2.3 0.0034638725 0.24 AML other m 2018-04-04T01:11:42.80
IV.EMSG.HHN. ML:2.9 0.01193061 0.38 AML other m 2018-04-04T01:11:46.98
IV.EPZF.HHN. ML:2.6 0.0037745025 0.64 AML other m 2018-04-04T01:11:50.00
IV.EPZF.HHE. ML:2.5 0.0033002765 0.58 AML other m 2018-04-04T01:11:51.63
IV.ESML.HHN. ML:2 0.00077948445 0.42 AML other m 2018-04-04T01:11:53.84
IV.ESML.HHE. ML:2.1 0.0010868569 0.56 AML other m 2018-04-04T01:11:53.97
IV.EPOZ.HHE. ML:2 0.00097096095 0.64 AML other m 2018-04-04T01:11:49.53
IV.EPOZ.HHN. ML:2.2 0.001317498 0.7 AML other m 2018-04-04T01:11:49.18
IV.AIO.HHN. ML:2 0.00052578485 0.54 AML other m 2018-04-04T01:11:53.31
IV.AIO.HHE. ML:1.9 0.0003340702 0.38 AML other m 2018-04-04T01:11:53.14
IV.NOV.HHN. ML:2 0.0004711828 0.3 AML other m 2018-04-04T01:11:55.81
IV.NOV.HHE. ML:2 0.00043781425 0.56 AML other m 2018-04-04T01:11:54.98
IV.MUCR.HHN. ML:1.9 0.00029423075 0.42 AML other m 2018-04-04T01:11:56.78
IV.MUCR.HHE. ML:1.8 0.0002921133 0.56 AML other m 2018-04-04T01:11:53.76
IV.GALF.HHN. ML:1.9 0.00029603565 0.6 AML other m 2018-04-04T01:12:01.29
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