Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 18-08-2019 and time 23:57:29 (Italy) in region 8 km W Zafferana Etnea (CT)

A magnitude ML 1.5 earthquake occured in region: 8 km W Zafferana Etnea (CT), on

  • 18-08-2019 21:57:29 (UTC)
  • 18-08-2019 23:57:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7180, 15.0160 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.

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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
Zafferana Etnea CT 8 9517 9517
Milo CT 9 1087 10604
Santa Venerina CT 11 8592 19196
Nicolosi CT 11 7463 26659
Pedara CT 12 14102 40761
Ragalna CT 12 3924 44685
Sant'Alfio CT 12 1582 46267
Trecastagni CT 12 10910 57177
Viagrande CT 14 8563 65740
Belpasso CT 14 28108 93848
Giarre CT 15 27659 121507
Biancavilla CT 15 24007 145514
Aci Bonaccorsi CT 16 3524 149038
Aci Sant'Antonio CT 16 17984 167022
Santa Maria di Licodia CT 16 7641 174663
San Pietro Clarenza CT 16 7743 182406
Mascalucia CT 16 31958 214364
Tremestieri Etneo CT 16 20589 234953
Mascali CT 17 14282 249235
Riposto CT 17 14838 264073
Camporotondo Etneo CT 17 5023 269096
Aci Catena CT 17 29851 298947
San Giovanni la Punta CT 17 23060 322007
Adrano CT 17 36122 358129
Piedimonte Etneo CT 18 3963 362092
Acireale CT 18 52622 414714
Linguaglossa CT 18 5403 420117
Gravina di Catania CT 18 25838 445955
Bronte CT 18 19172 465127
Maletto CT 18 3920 469047
Valverde CT 18 7840 476887
Paternò CT 18 48228 525115
Sant'Agata li Battiati CT 19 9479 534594
San Gregorio di Catania CT 19 11966 546560
Fiumefreddo di Sicilia CT 19 9623 556183
Randazzo CT 19 10900 567083

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Acireale (52622 inhabitants)
25 Km N of Catania (314555 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
71 Km SW of Messina (238439 inhabitants)
77 Km NW of Siracusa (122291 inhabitants)
88 Km E of Caltanissetta (63360 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
98 Km N of Modica (54633 inhabitants)
99 Km NE of Gela (75827 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 1.5 2019-08-18
21:57:29		 37.7178 15.0162 9 2019-11-13
14:30:59		 Bollettino Sismico Italiano INGV 71814111
Reviewed
Rev100 		ML 1.6 2019-08-18
21:57:29		 37.7173 15.0167 9 2019-08-19
01:52:21		 Sala Sismica INGV-Roma 71614021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-18 21:57:29 ± 0.13
Latitude 37.7178 ± 0.0054
Longitude 15.0162 ± 0.0091
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 71814111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 846
Semi-minor axis of confidence ellipse (meter) 457
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 118
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35523
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:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 71814111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-26 08:34:58

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 71614021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-19 01:52:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GALF.HHZ. 2019-08-18T21:57:43.07 0.3 undecidable manual S 269 39.4272 50 0.2 70
IV.MNO.SHZ. 2019-08-18T21:57:42.41 0.3 undecidable manual S 310 36.741 50 0.26 69
IV.MUCR.HHE. 2019-08-18T21:57:42.73 0.3 undecidable manual S 341 38.1285 50 0.21 70
IV.AGST.EHZ. 2019-08-18T21:57:39.01 3.0 undecidable manual P 0
IV.GALF.HHZ. 2019-08-18T21:57:37.30 0.1 undecidable manual P 269 39.4272 50 0.14 94
IV.MNO.SHZ. 2019-08-18T21:57:36.33 0.3 undecidable manual P 310 36.741 50 -0.41 67
IV.ESML.HHE. 2019-08-18T21:57:36.20 0.3 undecidable manual S 227 16.3725 118 0.44 69
IV.MUCR.HHE. 2019-08-18T21:57:36.72 0.3 undecidable manual P 341 38.1285 50 -0.23 69
IV.AIO.HHE. 2019-08-18T21:57:36.32 1.0 undecidable manual P 34 33.9438 50 0.02 24
IV.EPZF.HHZ. 2019-08-18T21:57:36.33 0.3 undecidable manual S 310 18.2706 115 -0.03 75
IV.EPIT.HHE. 2019-08-18T21:57:35.03 0.3 undecidable manual S 19 10.9779 128 0.84 60
IV.ECHR.HHE. 2019-08-18T21:57:34.15 0.3 undecidable manual S 249 9.6792 132 0.28 72
IV.EMSG.HHZ. 2019-08-18T21:57:34.95 0.3 undecidable manual S 333 12.7761 124 0.24 72
IV.EMCN.HNE. 2019-08-18T21:57:33.56 0.3 undecidable manual S 11 8.2806 136 0.06 76
IV.ESML.HHE. 2019-08-18T21:57:33.25 0.1 undecidable manual P 227 16.3725 118 0.2 97
IV.ECTS.EHE. 2019-08-18T21:57:33.65 0.1 undecidable manual P 27 20.3685 113 -0.14 97
IV.ESLN.HHZ. 2019-08-18T21:57:32.69 0.3 undecidable manual S 233 4.5954 152 -0.06 76
IV.EPIT.HHE. 2019-08-18T21:57:32.37 0.1 undecidable manual P 19 10.9779 128 0.22 97
IV.ENIC.HHZ. 2019-08-18T21:57:32.04 0.1 undecidable manual P 177 9.5793 132 0.1 100
IV.EPZF.HHZ. 2019-08-18T21:57:32.74 0.1 undecidable manual P 310 18.2706 115 -0.65 85
IV.EMSG.HHZ. 2019-08-18T21:57:32.07 0.1 positive manual P 333 12.7761 124 -0.37 94
IV.ECHR.HHE. 2019-08-18T21:57:31.52 0.1 undecidable manual P 249 9.6792 132 -0.43 93
IV.EMCN.HNE. 2019-08-18T21:57:31.61 0.1 undecidable manual P 11 8.2806 136 -0.14 100
IV.ESLN.HHZ. 2019-08-18T21:57:30.95 0.1 positive manual P 233 4.5954 152 -0.35 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:0.0 0.00043694259999999994 0.2944 AML other m 2019-08-18T21:57:32.70
IV.ESLN.HHE. ML:0.0 0.00046650309999999993 0.0768 AML other m 2019-08-18T21:57:31.90
IV.EMSG.HHN. ML:1.6 0.0004647948 0.2304 AML other m 2019-08-18T21:57:37.17
IV.EMSG.HHE. ML:1.7 0.0006299880500000001 0.3328 AML other m 2019-08-18T21:57:35.22
IV.EPZF.HHN. ML:1.4 0.0002141584 0.4096 AML other m 2019-08-18T21:57:39.80
IV.EPZF.HHE. ML:1.4 0.00022694905 0.2816 AML other m 2019-08-18T21:57:40.22
IV.GALF.HHE. ML:1.7 0.0001588506 0.5632 AML other m 2019-08-18T21:57:48.76
IV.GALF.HHN. ML:1.7 0.0001877883 0.4864 AML other m 2019-08-18T21:57:46.21
IV.GALF.HNE. ML:1.4 0.00010050970500000001 0.9728 AML other m 2019-08-18T21:57:43.61
IV.GALF.HNN. ML:1.6 0.0001388676 0.8704 AML other m 2019-08-18T21:57:56.10
IV.AGST.EHE. ML:1.3 0.000045250815 0.6656 AML other m 2019-08-18T21:57:57.48
IV.AGST.EHN. ML:1.4 0.000058454560000000005 0.7296 AML other m 2019-08-18T21:57:50.54
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