Earthquake with magnitude of ML 1.8 on date 27-02-2018 and time 21:29:57 (Italy) in region 2 km NW Milo (CT)

A magnitude ML 1.8 earthquake occured in region: 2 km NW Milo (CT), on

  • 27-02-2018 20:29:57 (UTC)
  • 27-02-2018 21:29:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.74, 15.1 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.

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 2 1087 1087
Sant'Alfio CT 4 1582 2669
Zafferana Etnea CT 4 9517 12186
Santa Venerina CT 6 8592 20778
Giarre CT 8 27659 48437
Mascali CT 9 14282 62719
Riposto CT 9 14838 77557
Piedimonte Etneo CT 11 3963 81520
Fiumefreddo di Sicilia CT 12 9623 91143
Linguaglossa CT 13 5403 96546
Trecastagni CT 13 10910 107456
Pedara CT 13 14102 121558
Viagrande CT 14 8563 130121
Aci Sant'Antonio CT 14 17984 148105
Nicolosi CT 15 7463 155568
Acireale CT 15 52622 208190
Aci Catena CT 15 29851 238041
Aci Bonaccorsi CT 15 3524 241565
Calatabiano CT 15 5308 246873
Castiglione di Sicilia CT 17 3215 250088
Valverde CT 17 7840 257928
San Giovanni la Punta CT 17 23060 280988
Tremestieri Etneo CT 18 20589 301577
Gaggi ME 18 3184 304761
Ragalna CT 18 3924 308685
Mascalucia CT 18 31958 340643
Moio Alcantara ME 19 717 341360
San Gregorio di Catania CT 19 11966 353326
Francavilla di Sicilia ME 19 3945 357271
Belpasso CT 19 28108 385379
San Pietro Clarenza CT 19 7743 393122
Motta Camastra ME 19 845 393967
Gravina di Catania CT 20 25838 419805
Sant'Agata li Battiati CT 20 9479 429284
Giardini-Naxos ME 20 9415 438699

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Acireale (52622 inhabitants)
26 Km N of Catania (314555 inhabitants)
64 Km SW of Reggio di Calabria (183035 inhabitants)
65 Km SW of Messina (238439 inhabitants)
77 Km N of Siracusa (122291 inhabitants)
95 Km E of Caltanissetta (63360 inhabitants)
96 Km NE of Ragusa (73313 inhabitants)
100 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 1.8 2018-02-27
20:29:57
37.73 15.1 10 2019-04-24
14:49:33
Bollettino Sismico Italiano INGV 56914751
Rev 100 ML 2.0 2018-02-27
20:29:57
37.73 15.1 7 2018-02-27
21:02:48
Sala Sismica INGV-Roma 54205401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-27 20:29:57 ± 0.12
Latitude 37.73 ± 0.01
Longitude 15.10 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 56914751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 836
Semi-minor axis of confidence ellipse (meter) 574
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 840
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.09443
Epicentral distance of station farthest from the epicenter (degree) 0.57736
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 54205401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-27 21:02:48

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 56914751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-16 07:46:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2018-02-27T20:30:18.25 0.1 undecidable manual S 182 0.5774 50 0.65 78
IV.HLNI.HHZ. 2018-02-27T20:30:13.17 0.1 undecidable manual S 205 0.4263 50 0.05 94
IV.MUCR.HHZ. 2018-02-27T20:30:10.97 0.1 undecidable manual S 330 0.3552 50 -0.06 95
IV.SSY.HHZ. 2018-02-27T20:30:09.16 0.1 undecidable manual P 182 0.5774 50 -0.06 91
IV.NOV.HHZ. 2018-02-27T20:30:09.97 0.1 undecidable manual S 6 0.2941 50 0.75 80
IV.AIO.HHZ. 2018-02-27T20:30:07.60 0.1 undecidable manual S 24 0.259 50 -0.57 86
IV.EPZF.HHZ. 2018-02-27T20:30:07.18 0.1 undecidable manual S 295 0.2113 113 0.6 86
IV.HLNI.HHZ. 2018-02-27T20:30:06.22 0.1 undecidable manual P 205 0.4263 50 -0.41 87
IV.MUCR.HHZ. 2018-02-27T20:30:05.51 0.1 undecidable manual P 330 0.3552 50 0.08 95
IV.NOV.HHZ. 2018-02-27T20:30:04.19 0.1 undecidable manual P 6 0.2941 50 -0.19 94
IV.EMSG.HHZ. 2018-02-27T20:30:04.72 0.1 undecidable manual S 306 0.1457 121 0.38 93
IV.AIO.HHZ. 2018-02-27T20:30:03.41 0.1 undecidable manual P 24 0.259 50 -0.37 91
IV.EPOZ.HHZ. 2018-02-27T20:30:03.11 0.1 undecidable manual S 132 0.0944 133 0.35 94
IV.ESML.HHZ. 2018-02-27T20:30:03.11 0.1 undecidable manual P 236 0.2095 113 0.29 94
IV.ESLN.HHZ. 2018-02-27T20:30:02.36 0.1 undecidable manual S 247 0.107 130 -0.75 82
IV.EPZF.HHZ. 2018-02-27T20:30:02.80 0.1 undecidable manual P 295 0.2113 113 -0.05 98
IV.EMSG.HHZ. 2018-02-27T20:30:01.48 0.1 undecidable manual P 306 0.1457 121 -0.08 99
IV.ESLN.HHZ. 2018-02-27T20:30:00.23 0.1 undecidable manual P 247 0.107 130 -0.63 87
IV.EPOZ.HHZ. 2018-02-27T20:30:00.72 0.1 positive manual P 132 0.0944 133 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.1 0.0015069215 0.32 AML other m 2018-02-27T20:30:02.75
IV.EPOZ.HHE. ML:2.4 0.0031525485 0.5248 AML other m 2018-02-27T20:30:07.40
IV.EPOZ.HHN. ML:2.3 0.002624249 0.2176 AML other m 2018-02-27T20:30:07.75
IV.EMSG.HHN. ML:2.4 0.002200497 0.2304 AML other m 2018-02-27T20:30:08.60
IV.EPZF.HHE. ML:2.2 0.001095225 0.32 AML other m 2018-02-27T20:30:10.54
IV.EPZF.HHN. ML:2.2 0.0010156677 0.256 AML other m 2018-02-27T20:30:10.49
IV.ESML.HHN. ML:1.7 0.00031066525 0.3584 AML other m 2018-02-27T20:30:11.35
IV.AIO.HHN. ML:1.6 0.0002206556 0.3072 AML other m 2018-02-27T20:30:10.66
IV.AIO.HHE. ML:1.7 0.0002309071 0.192 AML other m 2018-02-27T20:30:09.18
IV.NOV.HHN. ML:1.8 0.00025486475 0.2944 AML other m 2018-02-27T20:30:12.19
IV.NOV.HHE. ML:1.9 0.00032052395 0.448 AML other m 2018-02-27T20:30:12.97
IV.MUCR.HHE. ML:1.7 0.0001765207 0.4224 AML other m 2018-02-27T20:30:12.63
IV.HLNI.HHE. ML:1.1 3.436217E-5 0.128 AML other m 2018-02-27T20:30:17.82
IV.SSY.HHE. ML:1.6 8.589697E-5 0.4096 AML other m 2018-02-27T20:30:21.19
IV.SSY.HHN. ML:2.1 0.0002173144 0.2816 AML other m 2018-02-27T20:30:22.16
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