Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 23-07-2019 and time 12:30:49 (Italy) in region 1 km SE Bronte (CT)

A magnitude ML 1.9 earthquake occured in region: 1 km SE Bronte (CT), on

  • 23-07-2019 10:30:49 (UTC)
  • 23-07-2019 12:30:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7830, 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 1 19172 19172
Maletto CT 6 3920 23092
Maniace CT 9 3765 26857
Cesarò ME 13 2439 29296
Adrano CT 13 36122 65418
San Teodoro ME 14 1403 66821
Randazzo CT 14 10900 77721
Biancavilla CT 16 24007 101728
Santa Domenica Vittoria ME 19 980 102708
Santa Maria di Licodia CT 19 7641 110349
Ragalna CT 19 3924 114273
Centuripe EN 20 5470 119743

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Acireale (52622 inhabitants)
38 Km NW of Catania (314555 inhabitants)
76 Km E of Caltanissetta (63360 inhabitants)
78 Km SW of Messina (238439 inhabitants)
80 Km W of Reggio di Calabria (183035 inhabitants)
90 Km NW of Siracusa (122291 inhabitants)
95 Km NE of Gela (75827 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
96 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 1.9 2019-07-23
10:30:49		 37.7833 14.8373 11 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73255011
Reviewed
Rev200 		ML 1.8 2019-07-23
10:30:48		 37.779 14.84 5 2019-07-23
11:22:23		 Sala Operativa INGV-OE (Catania) 70823521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-23 10:30:49 ± 0.11
Latitude 37.7833 ± 0.0072
Longitude 14.8373 ± 0.0068
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 73255011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 764
Semi-minor axis of confidence ellipse (meter) 622
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
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) 75
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.43527
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 73255011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-14 16:59:33

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 70823521
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2019-07-23 11:22:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2019-07-23T10:31:00.24 0.6 undecidable manual S 6 28.9488 50 0.4 47
IV.ECTS.EHZ. 2019-07-23T10:31:00.01 0.6 undecidable manual S 66 27.1506 50 0.66 46
IV.GALF.HHZ. 2019-07-23T10:30:59.57 0.6 undecidable manual S 251 25.0527 50 0.77 43
IV.HLNI.HHZ. 2019-07-23T10:30:58.55 0.6 undecidable manual P 176 48.3183 50 0.07 48
IV.MNO.SHZ. 2019-07-23T10:30:58.22 0.6 undecidable manual S 323 20.5683 50 0.62 41
IV.EPIT.HHN. 2019-07-23T10:30:57.79 0.6 undecidable manual S 81 19.4694 119 0.51 45
IV.ESLN.HHZ. 2019-07-23T10:30:57.24 0.6 undecidable manual S 130 15.6732 124 1.1 36
IV.AIO.HHE. 2019-07-23T10:30:57.14 0.1 undecidable manual P 59 40.4262 50 -0.12 95
IV.MSFR.HHZ. 2019-07-23T10:30:56.38 0.6 undecidable manual P 322 35.1426 50 -0.06 49
IV.MUCR.HHZ. 2019-07-23T10:30:55.33 0.1 undecidable manual P 6 28.9488 50 -0.17 97
IV.MNO.SHZ. 2019-07-23T10:30:54.22 0.3 undecidable manual P 323 20.5683 50 0.02 75
IV.EMSG.HHZ. 2019-07-23T10:30:54.93 0.6 undecidable manual S 67 10.6782 135 0.11 50
IV.ECTS.EHZ. 2019-07-23T10:30:54.92 0.3 undecidable manual P 66 27.1506 50 -0.29 70
IV.GALF.HHZ. 2019-07-23T10:30:54.88 0.3 undecidable manual P 251 25.0527 50 -0.02 75
IV.ESML.HHZ. 2019-07-23T10:30:53.84 0.3 undecidable manual P 169 18.6702 120 -0.04 76
IV.EPIT.HHN. 2019-07-23T10:30:53.86 0.1 undecidable manual P 81 19.4694 119 -0.16 100
IV.ESLN.HHZ. 2019-07-23T10:30:53.01 0.3 undecidable manual P 130 15.6732 124 -0.35 72
IV.EMCN.HNE. 2019-07-23T10:30:53.68 0.3 undecidable manual P 87 17.2716 122 0.05 76
IV.EPZF.HHZ. 2019-07-23T10:30:53.83 0.6 undecidable manual S 21 4.7952 156 0.19 48
IV.EMSG.HHZ. 2019-07-23T10:30:52.22 0.1 positive manual P 67 10.6782 135 -0.38 98
IV.EPZF.HHZ. 2019-07-23T10:30:51.49 0.1 positive manual P 21 4.7952 156 -0.43 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:2.5 0.00359 0.2 AML other m 2019-07-23T10:30:55.04
IV.EMSG.HHE. ML:2.5 0.0035650000000000005 0.24 AML other m 2019-07-23T10:30:55.36
IV.MNO.SHE. ML:0.0 0.0003915 0.44 AML other m 2019-07-23T10:30:58.43
IV.GALF.HHN. ML:2.4 0.0014299999999999998 1.04 AML other m 2019-07-23T10:31:00.71
IV.ESML.HHE. ML:1.9 0.000686 0.6 AML other m 2019-07-23T10:31:00.39
IV.MUCR.HHE. ML:1.9 0.000406 0.54 AML other m 2019-07-23T10:31:00.89
IV.MNO.SHN. ML:0.0 0.0005655 0.92 AML other m 2019-07-23T10:31:01.57
IV.MUCR.HHN. ML:1.8 0.0003305 0.46 AML other m 2019-07-23T10:31:02.29
IV.MSFR.HHE. ML:1.3 0.00007985 0.94 AML other m 2019-07-23T10:31:02.88
IV.ESML.HHN. ML:1.8 0.000554 0.44 AML other m 2019-07-23T10:31:02.31
IV.GALF.HHE. ML:2.3 0.0011185000000000001 0.52 AML other m 2019-07-23T10:31:03.35
IV.MSFR.HHN. ML:1.2 0.00006434999999999999 0.92 AML other m 2019-07-23T10:31:05.76
IV.HLNI.HHE. ML:1.3 0.00005305 1.12 AML other m 2019-07-23T10:31:08.99
IV.HLNI.HHN. ML:1.3 0.000048599999999999995 0.86 AML other m 2019-07-23T10:31:13.04
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