Earthquake with magnitude of ML 2.0 on date 23-10-2018 and time 02:25:47 (Italy) in region 1 km NW Sant'Alfio (CT)

A magnitude ML 2.0 earthquake occured in region: 1 km NW Sant'Alfio (CT), on

  • 23-10-2018 00:25:47 (UTC)
  • 23-10-2018 02:25:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7520, 15.1380 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
Sant'Alfio CT 1 1582 1582
Milo CT 4 1087 2669
Giarre CT 5 27659 30328
Mascali CT 5 14282 44610
Riposto CT 6 14838 59448
Zafferana Etnea CT 7 9517 68965
Santa Venerina CT 7 8592 77557
Piedimonte Etneo CT 7 3963 81520
Fiumefreddo di Sicilia CT 8 9623 91143
Linguaglossa CT 10 5403 96546
Calatabiano CT 11 5308 101854
Gaggi ME 14 3184 105038
Castiglione di Sicilia CT 15 3215 108253
Acireale CT 16 52622 160875
Trecastagni CT 16 10910 171785
Giardini-Naxos ME 16 9415 181200
Viagrande CT 16 8563 189763
Aci Sant'Antonio CT 16 17984 207747
Pedara CT 16 14102 221849
Motta Camastra ME 16 845 222694
Aci Catena CT 17 29851 252545
Francavilla di Sicilia ME 17 3945 256490
Taormina ME 17 10960 267450
Castelmola ME 17 1088 268538
Aci Bonaccorsi CT 17 3524 272062
Graniti ME 18 1492 273554
Nicolosi CT 18 7463 281017
Moio Alcantara ME 18 717 281734
Valverde CT 19 7840 289574
San Giovanni la Punta CT 20 23060 312634
Malvagna ME 20 733 313367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
61 Km SW of Messina (238439 inhabitants)
78 Km N of Siracusa (122291 inhabitants)
99 Km NE of Ragusa (73313 inhabitants)
99 Km E of Caltanissetta (63360 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 2.0 2018-10-23
00:25:47
37.7518 15.1382 10 2019-06-04
09:16:01
Bollettino Sismico Italiano INGV 63299441
Reviewed
Rev100
ML 2.0 2018-10-23
00:25:47
37.7463 15.1357 10 2018-10-23
00:36:00
Sala Sismica INGV-Roma 62229731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-23 00:25:47 ± 0.09
Latitude 37.7518 ± 0.0063
Longitude 15.1382 ± 0.0080
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 63299441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 755
Semi-minor axis of confidence ellipse (meter) 634
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 222
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 62229731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-23 00:36:00

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 63299441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-28 16:57:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NOV.HHZ. 2018-10-23T00:25:58.40 0.3 undecidable manual S 360 30.6471 50 0.33 69
IV.EPZF.HHZ. 2018-10-23T00:25:56.70 0.3 undecidable manual S 288 25.9518 50 -0.11 73
IV.MUCR.HHZ. 2018-10-23T00:25:54.91 0.3 undecidable manual P 324 39.7269 50 0.02 73
IV.ESML.HHZ. 2018-10-23T00:25:53.06 0.1 undecidable manual P 237 27.1506 50 0.11 97
IV.NOV.HHZ. 2018-10-23T00:25:53.18 0.1 undecidable manual P 360 30.6471 50 -0.31 93
IV.EMCN.HNZ. 2018-10-23T00:25:52.38 0.6 undecidable manual S 296 10.1787 135 0.18 49
IV.EPZF.HHZ. 2018-10-23T00:25:52.76 0.1 undecidable manual P 288 25.9518 50 0 100
IV.EPOZ.HHZ. 2018-10-23T00:25:51.87 0.6 undecidable manual S 153 9.879 136 -0.27 49
IV.EVRN.HNZ. 2018-10-23T00:25:51.66 0.3 undecidable manual S 182 6.993 146 0.17 75
IV.EPOZ.HHZ. 2018-10-23T00:25:50.27 0.1 undecidable manual P 153 9.879 136 0.21 98
IV.EMCN.HNZ. 2018-10-23T00:25:49.97 0.1 positive manual P 296 10.1787 135 -0.13 100
IV.EVRN.HNZ. 2018-10-23T00:25:49.48 0.3 undecidable manual P 182 6.993 146 -0.2 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMCN.HNN. ML:2.2 0.00229153 0.22 AML other m 2018-10-23T00:25:52.83
IV.EMCN.HNE. ML:2.2 0.0019477185000000001 0.3 AML other m 2018-10-23T00:25:55.26
IV.EPZF.HHN. ML:1.7 0.00026007625 0.4 AML other m 2018-10-23T00:25:59.26
IV.EPZF.HHE. ML:1.9 0.00040746245000000003 0.3 AML other m 2018-10-23T00:26:00.03
IV.NOV.HHE. ML:2.0 0.00044989775 0.32 AML other m 2018-10-23T00:26:00.86
IV.NOV.HHN. ML:1.9 0.00038537099999999997 0.38 AML other m 2018-10-23T00:26:00.77
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