Istituto Nazionale di Geofisica e Vulcanologia

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) 37.7350, 15.0990 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 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
Calatabiano CT 15 5308 213498
Aci Catena CT 15 29851 243349
Aci Bonaccorsi CT 15 3524 246873
Castiglione di Sicilia CT 17 3215 250088
San Giovanni la Punta CT 17 23060 273148
Valverde CT 17 7840 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
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.8 2018-02-27
20:29:57		 37.7348 15.099 10 2019-04-24
14:49:33		 Bollettino Sismico Italiano INGV 56914751
Reviewed
Rev100 		ML 2.0 2018-02-27
20:29:57		 37.7273 15.0963 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 37.7348 ± 0.0054
Longitude 15.0990 ± 0.0102
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) 840.0
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: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

ML:2.0

Field Value
Value 2.0
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
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2018-02-27T20:30:18.25 0.1 undecidable manual S 182 64.0914 50 0.65 78
IV.HLNI.HHZ. 2018-02-27T20:30:13.17 0.1 undecidable manual S 205 47.3193 50 0.05 94
IV.MUCR.HHZ. 2018-02-27T20:30:10.97 0.1 undecidable manual S 330 39.4272 50 -0.06 95
IV.SSY.HHZ. 2018-02-27T20:30:09.16 0.1 undecidable manual P 182 64.0914 50 -0.06 91
IV.NOV.HHZ. 2018-02-27T20:30:09.97 0.1 undecidable manual S 6 32.6451 50 0.75 80
IV.AIO.HHZ. 2018-02-27T20:30:07.60 0.1 undecidable manual S 24 28.749 50 -0.57 86
IV.EPZF.HHZ. 2018-02-27T20:30:07.18 0.1 undecidable manual S 295 23.4543 113 0.6 86
IV.HLNI.HHZ. 2018-02-27T20:30:06.22 0.1 undecidable manual P 205 47.3193 50 -0.41 87
IV.MUCR.HHZ. 2018-02-27T20:30:05.51 0.1 undecidable manual P 330 39.4272 50 0.08 95
IV.NOV.HHZ. 2018-02-27T20:30:04.19 0.1 undecidable manual P 6 32.6451 50 -0.19 94
IV.EMSG.HHZ. 2018-02-27T20:30:04.72 0.1 undecidable manual S 306 16.1727 121 0.38 93
IV.AIO.HHZ. 2018-02-27T20:30:03.41 0.1 undecidable manual P 24 28.749 50 -0.37 91
IV.EPOZ.HHZ. 2018-02-27T20:30:03.11 0.1 undecidable manual S 132 10.4784 133 0.35 94
IV.ESML.HHZ. 2018-02-27T20:30:03.11 0.1 undecidable manual P 236 23.2545 113 0.29 94
IV.ESLN.HHZ. 2018-02-27T20:30:02.36 0.1 undecidable manual S 247 11.877 130 -0.75 82
IV.EPZF.HHZ. 2018-02-27T20:30:02.80 0.1 undecidable manual P 295 23.4543 113 -0.05 98
IV.EMSG.HHZ. 2018-02-27T20:30:01.48 0.1 undecidable manual P 306 16.1727 121 -0.08 99
IV.ESLN.HHZ. 2018-02-27T20:30:00.23 0.1 undecidable manual P 247 11.877 130 -0.63 87
IV.EPOZ.HHZ. 2018-02-27T20:30:00.72 0.1 positive manual P 132 10.4784 133 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
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.SSY.HHE. ML:1.6 0.00008589697 0.4096 AML other m 2018-02-27T20:30:21.19
IV.SSY.HHN. ML:2.1 0.00021731440000000003 0.2816 AML other m 2018-02-27T20:30:22.16
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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