Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 23-07-2019 and time 08:49:08 (Italy) in region 3 km S Bronte (CT)

A magnitude ML 1.4 earthquake occured in region: 3 km S Bronte (CT), on

  • 23-07-2019 06:49:08 (UTC)
  • 23-07-2019 08:49:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7640, 14.8370 at 11 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
Bronte CT 3 19172 19172
Maletto CT 8 3920 23092
Adrano CT 11 36122 59214
Maniace CT 11 3765 62979
Biancavilla CT 14 24007 86986
Cesarò ME 14 2439 89425
San Teodoro ME 15 1403 90828
Randazzo CT 16 10900 101728
Santa Maria di Licodia CT 17 7641 109369
Ragalna CT 17 3924 113293
Centuripe EN 18 5470 118763

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Acireale (52622 inhabitants)
36 Km NW of Catania (314555 inhabitants)
75 Km E of Caltanissetta (63360 inhabitants)
79 Km SW of Messina (238439 inhabitants)
81 Km SW of Reggio di Calabria (183035 inhabitants)
88 Km NW of Siracusa (122291 inhabitants)
93 Km NE of Gela (75827 inhabitants)
94 Km N of Ragusa (73313 inhabitants)
94 Km N 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 1.4 2019-07-23
06:49:08		 37.7638 14.8367 11 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73254451
Reviewed
Rev200 		ML 1.2 2019-07-23
06:49:08		 37.769 14.848 5 2019-07-23
08:39:55		 Sala Operativa INGV-OE (Catania) 70818821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-23 06:49:08 ± 0.23
Latitude 37.7638 ± 0.0126
Longitude 14.8367 ± 0.0091
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73254451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1393
Semi-minor axis of confidence ellipse (meter) 598
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 1390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.28059
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 73254451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-14 16:35:56

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 70818821
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2019-07-23 08:39:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2019-07-23T06:49:19.71 0.6 undecidable manual S 6 31.1466 50 0.09 49
IV.MNO.SHZ. 2019-07-23T06:49:17.73 0.6 undecidable manual S 326 22.3554 50 0.46 44
IV.EPIT.HHN. 2019-07-23T06:49:17.36 0.6 undecidable manual S 75 19.9689 50 0.71 40
IV.GALF.HHZ. 2019-07-23T06:49:14.39 0.3 undecidable manual P 256 24.4533 50 0.39 70
IV.EMSG.HHZ. 2019-07-23T06:49:14.40 0.6 undecidable manual S 57 11.7771 132 0.1 48
IV.MUCR.HHZ. 2019-07-23T06:49:14.98 0.1 undecidable manual P 6 31.1466 50 -0.06 96
IV.EPZF.HHZ. 2019-07-23T06:49:13.32 0.6 undecidable manual S 15 6.8931 147 0.11 48
IV.EPIT.HHN. 2019-07-23T06:49:13.35 0.1 undecidable manual P 75 19.9689 50 0.03 100
IV.MNO.SHZ. 2019-07-23T06:49:13.66 0.1 undecidable manual P 326 22.3554 50 -0.02 100
IV.EMSG.HHZ. 2019-07-23T06:49:11.67 0.1 positive manual P 57 11.7771 132 -0.3 99
IV.EPZF.HHZ. 2019-07-23T06:49:10.94 0.1 positive manual P 15 6.8931 147 -0.4 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:1.7 0.0005375 0.18 AML other m 2019-07-23T06:49:14.49
IV.EMSG.HHE. ML:1.9 0.000867 0.28 AML other m 2019-07-23T06:49:14.78
IV.GALF.HHN. ML:1.4 0.0001565 1.34 AML other m 2019-07-23T06:49:19.83
IV.MUCR.HHE. ML:1.2 0.00006500000000000001 0.58 AML other m 2019-07-23T06:49:20.39
IV.MUCR.HHN. ML:1.1 0.000058049999999999995 0.42 AML other m 2019-07-23T06:49:21.76
IV.GALF.HHE. ML:1.4 0.0001325 1.52 AML other m 2019-07-23T06:49:23.78
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