Earthquake with magnitude of ML 1.8 on date 23-10-2019 and time 16:16:05 (Italy) in region 7 km SW Bronte (CT)

A magnitude ML 1.8 earthquake occured in region: 7 km SW Bronte (CT), on

  • 23-10-2019 14:16:05 (UTC)
  • 23-10-2019 16:16:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.74, 14.79 at 24 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

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 7 19172 19172
Adrano CT 10 36122 55294
Maletto CT 12 3920 59214
CesarĂ² ME 13 2439 61653
Biancavilla CT 13 24007 85660
Maniace CT 14 3765 89425
Centuripe EN 14 5470 94895
San Teodoro ME 14 1403 96298
Regalbuto EN 16 7277 103575
Santa Maria di Licodia CT 17 7641 111216
Troina EN 17 9373 120589
Ragalna CT 18 3924 124513

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Acireale (52622 inhabitants)
37 Km NW of Catania (314555 inhabitants)
70 Km E of Caltanissetta (63360 inhabitants)
84 Km SW of Messina (238439 inhabitants)
86 Km SW of Reggio di Calabria (183035 inhabitants)
88 Km NW of Siracusa (122291 inhabitants)
89 Km NE of Gela (75827 inhabitants)
91 Km N of Vittoria (63339 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
98 Km N of Modica (54633 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.8 2019-10-23
14:16:05
37.74 14.79 24 2019-10-23
14:46:09
Sala Sismica INGV-Roma 73410971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-23 14:16:05 ± 0.22
Latitude 37.74 ± 0.01
Longitude 14.79 ± 0.01
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73410971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1274
Semi-minor axis of confidence ellipse (meter) 350
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 263
Circular confidence region, given by single value of horizontal uncertainty (meter) 1270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.09803
Epicentral distance of station farthest from the epicenter (degree) 0.62683
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 73410971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-23 14:46:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2019-10-23T14:16:27.20 0.6 undecidable manual S 159 0.6268 103 0.61 40
IV.HAGA.HHZ. 2019-10-23T14:16:24.40 0.6 undecidable manual S 147 0.5423 105 0.25 45
IV.HLNI.HHZ. 2019-10-23T14:16:20.73 0.6 undecidable manual S 170 0.3993 111 0.61 42
IV.MSFR.HHZ. 2019-10-23T14:16:18.99 0.6 undecidable manual S 332 0.3301 116 0.75 42
IV.SSY.HHZ. 2019-10-23T14:16:17.11 0.3 undecidable manual P 159 0.6268 103 -0.44 64
IV.RAFF.HHZ. 2019-10-23T14:16:17.62 0.3 undecidable manual P 213 0.6196 103 0.2 68
IV.MUCR.HHZ. 2019-10-23T14:16:17.71 0.6 undecidable manual S 13 0.3085 118 0.05 50
IV.HAGA.HHZ. 2019-10-23T14:16:15.86 0.3 undecidable manual P 147 0.5423 105 -0.28 68
IV.MNO.SHZ. 2019-10-23T14:16:15.44 0.6 undecidable manual S 339 0.2023 131 0.38 48
IV.AIO.HHE. 2019-10-23T14:16:14.54 0.3 undecidable manual P 57 0.4191 110 0.4 68
IV.HLNI.HHZ. 2019-10-23T14:16:13.32 0.1 undecidable manual P 170 0.3993 111 -0.49 89
IV.EPZF.HHZ. 2019-10-23T14:16:12.29 0.6 undecidable manual S 34 0.098 152 -0.84 42
IV.MUCR.HHZ. 2019-10-23T14:16:12.17 0.3 undecidable manual P 13 0.3085 118 -0.22 71
IV.MSFR.HHZ. 2019-10-23T14:16:12.32 0.1 negative manual P 332 0.3301 116 -0.4 91
IV.MNO.SHZ. 2019-10-23T14:16:11.63 0.3 undecidable manual P 339 0.2023 131 0.74 64
IV.ESLN.HHE. 2019-10-23T14:16:11.32 0.3 undecidable manual P 108 0.1556 139 0.99 56
IV.EMSG.HHZ. 2019-10-23T14:16:10.30 0.3 undecidable manual P 59 0.1502 140 0.03 77
IV.EPIT.HHE. 2019-10-23T14:16:10.41 0.6 undecidable manual P 72 0.2239 128 -0.76 41
IV.GALF.HHZ. 2019-10-23T14:16:10.31 0.1 undecidable manual P 260 0.1772 135 -0.27 97
IV.EPZF.HHZ. 2019-10-23T14:16:09.56 0.1 undecidable manual P 34 0.098 152 -0.22 100
IV.ECHR.HHE. 2019-10-23T14:16:09.84 0.3 undecidable manual P 119 0.1142 148 -0.07 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MNO.SHN. ML:0 0.000264 0.6 AML other m 2019-10-23T14:16:15.88
IV.GALF.HHE. ML:2 0.000551 0.66 AML other m 2019-10-23T14:16:16.44
IV.EPZF.HHN. ML:1.9 0.0005135 1.46 AML other m 2019-10-23T14:16:16.85
IV.GALF.HHN. ML:1.9 0.000361 0.68 AML other m 2019-10-23T14:16:18.50
IV.MNO.SHE. ML:0 0.0001635 0.56 AML other m 2019-10-23T14:16:18.44
IV.EPZF.HHE. ML:1.7 0.000301 0.64 AML other m 2019-10-23T14:16:18.18
IV.MUCR.HHN. ML:1.6 0.0001305 0.42 AML other m 2019-10-23T14:16:19.35
IV.MUCR.HHE. ML:1.6 0.0001275 1.6 AML other m 2019-10-23T14:16:19.84
IV.HLNI.HHN. ML:2 0.000272 1.54 AML other m 2019-10-23T14:16:21.12
IV.HLNI.HHE. ML:2 0.0002415 0.96 AML other m 2019-10-23T14:16:21.66
IV.SSY.HHN. ML:3 0.00151 0.94 AML other m 2019-10-23T14:16:28.13
IV.SSY.HHE. ML:2.5 0.0005205 1.18 AML other m 2019-10-23T14:16:29.81
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download