Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 23-07-2019 and time 08:58:08 (Italy) in region 1 km SW Bronte (CT)

A magnitude ML 2.1 earthquake occured in region: 1 km SW Bronte (CT), on

  • 23-07-2019 06:58:08 (UTC)
  • 23-07-2019 08:58:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7780, 14.8270 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 7 3920 23092
Maniace CT 10 3765 26857
Cesarò ME 13 2439 29296
Adrano CT 13 36122 65418
San Teodoro ME 14 1403 66821
Randazzo CT 15 10900 77721
Biancavilla CT 16 24007 101728
Santa Maria di Licodia CT 19 7641 109369
Centuripe EN 19 5470 114839
Ragalna CT 19 3924 118763
Santa Domenica Vittoria ME 20 980 119743
Troina EN 20 9373 129116

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Acireale (52622 inhabitants)
38 Km NW of Catania (314555 inhabitants)
74 Km E of Caltanissetta (63360 inhabitants)
79 Km SW of Messina (238439 inhabitants)
81 Km W of Reggio di Calabria (183035 inhabitants)
90 Km NW of Siracusa (122291 inhabitants)
94 Km NE of Gela (75827 inhabitants)
95 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 2.1 2019-07-23
06:58:08		 37.7777 14.8272 11 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73254561
Reviewed
Rev200 		ML 1.7 2019-07-23
06:58:07		 37.773 14.831 8 2019-07-23
08:38:34		 Sala Operativa INGV-OE (Catania) 70818761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-23 06:58:08 ± 0.13
Latitude 37.7777 ± 0.0072
Longitude 14.8272 ± 0.0102
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 73254561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 909
Semi-minor axis of confidence ellipse (meter) 825
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 108
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.05216
Epicentral distance of station farthest from the epicenter (degree) 0.37412
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 73254561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-14 16:39:26

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 70818761
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2019-07-23 08:38:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2019-07-23T06:58:19.50 0.6 undecidable manual S 8 29.748 50 0.59 44
IV.AIO.HHE. 2019-07-23T06:58:16.32 0.1 undecidable manual P 59 41.5251 50 0.03 98
IV.EPIT.HHN. 2019-07-23T06:58:16.80 0.6 undecidable manual S 79 20.4684 117 0.4 47
IV.ESLN.HHZ. 2019-07-23T06:58:15.50 0.6 undecidable manual S 126 15.9729 124 0.46 47
IV.EMSG.HHZ. 2019-07-23T06:58:14.00 0.3 undecidable manual S 66 11.7771 132 0.1 76
IV.MUCR.HHZ. 2019-07-23T06:58:14.31 0.1 undecidable manual P 8 29.748 50 -0.16 97
IV.ECTS.EHZ. 2019-07-23T06:58:13.91 0.3 undecidable manual P 66 28.2495 50 -0.33 71
IV.GALF.HHZ. 2019-07-23T06:58:13.88 0.3 undecidable manual P 252 24.0537 50 0.28 72
IV.EPZF.HHZ. 2019-07-23T06:58:12.90 0.6 undecidable manual S 27 5.7942 151 0.32 49
IV.ESLN.HHZ. 2019-07-23T06:58:12.07 0.1 undecidable manual P 126 15.9729 124 -0.17 100
IV.EPIT.HHN. 2019-07-23T06:58:12.91 0.1 undecidable manual P 79 20.4684 117 -0.11 100
IV.ECHR.HHE. 2019-07-23T06:58:11.75 0.3 undecidable manual P 143 12.5763 130 0.05 77
IV.EMSG.HHZ. 2019-07-23T06:58:11.30 0.1 positive manual P 66 11.7771 132 -0.27 98
IV.EPZF.HHZ. 2019-07-23T06:58:10.59 0.1 positive manual P 27 5.7942 151 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:2.4 0.002875 0.2 AML other m 2019-07-23T06:58:14.14
IV.EMSG.HHE. ML:2.5 0.0035949999999999997 0.24 AML other m 2019-07-23T06:58:14.44
IV.ESLN.HHN. ML:1.9 0.0007889999999999999 0.3 AML other m 2019-07-23T06:58:16.56
IV.ESLN.HHE. ML:2.0 0.0008435 0.4 AML other m 2019-07-23T06:58:16.70
IV.MUCR.HHE. ML:1.9 0.00041999999999999996 1.42 AML other m 2019-07-23T06:58:19.00
IV.MUCR.HHN. ML:1.8 0.00031800000000000003 0.46 AML other m 2019-07-23T06:58:21.41
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