Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 17-04-2019 and time 13:11:50 (Italy) in region 1 km N Sant'Alfio (CT)

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

  • 17-04-2019 11:11:50 (UTC)
  • 17-04-2019 13:11:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7580, 15.1440 at 6 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
Sant'Alfio CT 1 1582 1582
Milo CT 4 1087 2669
Mascali CT 5 14282 16951
Giarre CT 5 27659 44610
Riposto CT 6 14838 59448
Piedimonte Etneo CT 7 3963 63411
Fiumefreddo di Sicilia CT 7 9623 73034
Zafferana Etnea CT 8 9517 82551
Santa Venerina CT 8 8592 91143
Linguaglossa CT 9 5403 96546
Calatabiano CT 11 5308 101854
Gaggi ME 13 3184 105038
Castiglione di Sicilia CT 14 3215 108253
Giardini-Naxos ME 15 9415 117668
Motta Camastra ME 16 845 118513
Francavilla di Sicilia ME 16 3945 122458
Taormina ME 16 10960 133418
Acireale CT 16 52622 186040
Castelmola ME 16 1088 187128
Trecastagni CT 17 10910 198038
Graniti ME 17 1492 199530
Aci Sant'Antonio CT 17 17984 217514
Viagrande CT 17 8563 226077
Aci Catena CT 17 29851 255928
Pedara CT 17 14102 270030
Moio Alcantara ME 18 717 270747
Aci Bonaccorsi CT 18 3524 274271
Nicolosi CT 19 7463 281734
Malvagna ME 20 733 282467
Valverde CT 20 7840 290307
Letojanni ME 20 2861 293168

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Acireale (52622 inhabitants)
29 Km N of Catania (314555 inhabitants)
59 Km SW of Reggio di Calabria (183035 inhabitants)
61 Km SW of Messina (238439 inhabitants)
79 Km N of Siracusa (122291 inhabitants)
99 Km NE of Ragusa (73313 inhabitants)
100 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 2019-04-17
11:11:50		 37.7578 15.1437 6 2019-08-22
08:24:58		 Bollettino Sismico Italiano INGV 68124921
Reviewed
Rev100 		ML 2.0 2019-04-17
11:11:50		 37.7587 15.1393 5 2019-04-17
11:33:37		 Sala Sismica INGV-Roma 67674921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-17 11:11:50 ± 0.09
Latitude 37.7578 ± 0.0045
Longitude 15.1437 ± 0.0068
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68124921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 354
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
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) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.51801
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 68124921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-30 15:05:58

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 67674921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-17 11:33:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESLN.HHZ. 2019-04-17T11:15:38.50 0.6 undecidable manual S 16.4724 9.999 0
IV.ESLN.HHZ. 2019-04-17T11:12:32.50 0.6 undecidable manual P 16.4724 3.83 0
IV.EPZF.HHZ. 2019-04-17T11:12:00.20 0.3 undecidable manual S 286 26.1516 103 0.2 71
IV.GALF.HHZ. 2019-04-17T11:12:00.77 0.6 undecidable manual P 264 50.9157 50 0.15 45
IV.MILZ.HHZ. 2019-04-17T11:12:00.64 3.0 undecidable manual P 57.498 -0.99 0
IV.MNO.SHZ. 2019-04-17T11:11:59.54 0.3 undecidable manual P 296 43.7229 50 0.02 71
IV.MPNC.HHN. 2019-04-17T11:11:59.97 0.3 undecidable manual P 23 46.8198 50 -0.02 71
IV.MUCR.HHE. 2019-04-17T11:11:58.39 0.3 undecidable manual P 323 39.4272 98 -0.29 68
IV.NOV.HHE. 2019-04-17T11:11:56.64 0.6 undecidable manual P 359 29.9478 101 -0.17 47
IV.EPZF.HHZ. 2019-04-17T11:11:55.93 0.3 undecidable manual P 286 26.1516 103 -0.14 71
IV.EMCN.HNZ. 2019-04-17T11:11:54.70 0.3 undecidable manual S 291 10.2786 120 -0.12 74
IV.EMSG.HHZ. 2019-04-17T11:11:54.76 0.3 undecidable manual P 292 18.3705 108 0.21 71
IV.EPIT.HHN. 2019-04-17T11:11:54.70 0.3 undecidable manual S 308 9.6792 121 0.09 74
IV.ENIC.HHE. 2019-04-17T11:11:54.28 0.3 undecidable manual P 217 17.6712 108 -0.14 73
IV.EPOZ.HHZ. 2019-04-17T11:11:54.60 0.3 undecidable manual S 158 10.2786 120 -0.22 72
IV.ECHR.HHE. 2019-04-17T11:11:54.92 0.3 undecidable manual P 249 21.7671 105 -0.28 70
IV.EPOZ.HHZ. 2019-04-17T11:11:53.60 0.3 undecidable manual P 158 10.2786 120 0.53 67
IV.EPIT.HHN. 2019-04-17T11:11:53.06 0.1 undecidable manual P 308 9.6792 121 0.1 99
IV.EMCN.HNZ. 2019-04-17T11:11:53.11 0.1 positive manual P 291 10.2786 120 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMCN.HNN. ML:0.0 0.003403868 0.352 AML other m 2019-04-17T11:11:55.76
IV.EMCN.HNE. ML:0.0 0.003410836 0.1792 AML other m 2019-04-17T11:11:57.57
IV.EPOZ.HHE. ML:0.0 0.0019142084999999999 0.3008 AML other m 2019-04-17T11:12:00.03
IV.EMSG.HHN. ML:0.0 0.001057358 0.4416 AML other m 2019-04-17T11:12:00.22
IV.EPOZ.HHN. ML:0.0 0.0027441535 0.3648 AML other m 2019-04-17T11:11:59.57
IV.EPZF.HHE. ML:0.0 0.0005124409999999999 0.3584 AML other m 2019-04-17T11:12:03.38
IV.EMSG.HHE. ML:0.0 0.0015054125 0.6848 AML other m 2019-04-17T11:12:07.52
IV.EPZF.HHN. ML:0.0 0.00066428225 0.4224 AML other m 2019-04-17T11:12:07.51
IV.MNO.SHE. ML:0.0 0.00011353018 0.8384 AML other m 2019-04-17T11:12:14.64
IV.MNO.SHN. ML:0.0 0.00014857589999999997 1.0368 AML other m 2019-04-17T11:12:15.38
IV.GALF.HHN. ML:0.0 0.00022034605 0.6208 AML other m 2019-04-17T11:12:17.59
IV.MILZ.HHN. ML:0.0 0.00009329214 0.4608 AML other m 2019-04-17T11:12:17.91
IV.MILZ.HHE. ML:0.0 0.00012051385000000001 0.48 AML other m 2019-04-17T11:12:18.16
IV.GALF.HHE. ML:0.0 0.00018874940000000002 0.6592 AML other m 2019-04-17T11:12:20.28
IV.GALF.HNE. ML:1.6 0.000094636585 0.64 AML other m 2019-04-17T11:12:20.44
IV.GALF.HNN. ML:1.6 0.000099607745 0.7232 AML other m 2019-04-17T11:12:20.51
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