Earthquake with magnitude of ML 1.1 on date 20-07-2019 and time 21:39:19 (Italy) in region 3 km E Troina (EN)

A magnitude ML 1.1 earthquake occured in region: 3 km E Troina (EN), on

  • 20-07-2019 19:39:19 (UTC)
  • 20-07-2019 21:39:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.79, 14.64 at 29 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
Troina EN 3 9373 9373
San Teodoro ME 9 1403 10776
CesarĂ² ME 9 2439 13215
Cerami EN 12 2006 15221
Gagliano Castelferrato EN 13 3593 18814
Capizzi ME 15 3176 21990
Regalbuto EN 15 7277 29267
Maniace CT 17 3765 33032
Bronte CT 17 19172 52204
Agira EN 18 8345 60549

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km W of Acireale (52622 inhabitants)
51 Km NW of Catania (314555 inhabitants)
61 Km NE of Caltanissetta (63360 inhabitants)
88 Km NE of Gela (75827 inhabitants)
92 Km SW of Messina (238439 inhabitants)
94 Km N of Vittoria (63339 inhabitants)
95 Km W of Reggio di Calabria (183035 inhabitants)
97 Km N of Ragusa (73313 inhabitants)
100 Km NW of Siracusa (122291 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 1.1 2019-07-20
19:39:19
37.79 14.64 29 2019-07-20
19:50:13
Sala Sismica INGV-Roma 70745771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-20 19:39:19 ± 0.25
Latitude 37.79 ± 0.01
Longitude 14.64 ± 0.01
Depth (km) 29 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70745771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1014
Semi-minor axis of confidence ellipse (meter) 710
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 291
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48114
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 70745771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-20 19:50:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSLB.HHZ. 2019-07-20T19:39:37.68 0.6 undecidable manual S 288 0.4793 113 0.35 45
IV.HLNI.HHZ. 2019-07-20T19:39:37.52 1.0 undecidable manual S 157 0.4802 113 0.16 23
IV.MUCR.HHZ. 2019-07-20T19:39:33.16 0.6 undecidable manual S 37 0.313 125 0.14 49
IV.CSLB.HHZ. 2019-07-20T19:39:30.20 0.1 undecidable manual P 288 0.4793 113 0.34 90
IV.MSFR.HHE. 2019-07-20T19:39:30.99 0.6 undecidable manual S 352 0.2446 133 -0.44 46
IV.HLNI.HHZ. 2019-07-20T19:39:29.54 0.1 undecidable manual P 157 0.4802 113 -0.34 91
IV.MNO.SHZ. 2019-07-20T19:39:29.86 0.6 undecidable manual S 18 0.1466 148 0.28 49
IV.GALF.HHZ. 2019-07-20T19:39:28.97 0.6 undecidable manual S 214 0.098 158 0.05 52
IV.PETRA.HHZ. 2019-07-20T19:39:28.34 0.1 undecidable manual P 276 0.4137 117 -0.5 89
IV.MUCR.HHZ. 2019-07-20T19:39:27.24 0.1 undecidable manual P 37 0.313 125 -0.12 98
IV.MSFR.HHE. 2019-07-20T19:39:26.38 0.1 undecidable manual P 352 0.2446 133 -0.07 100
IV.CORL.HHZ. 2019-07-20T19:39:26.39 3.0 undecidable manual P 0 0
IV.EPZF.HHE. 2019-07-20T19:39:26.41 0.1 undecidable manual P 79 0.1772 143 0.73 85
IV.CAGR.HHE. 2019-07-20T19:39:26.34 0.3 undecidable manual P 213 0.2014 139 0.41 70
IV.MNO.SHZ. 2019-07-20T19:39:25.15 0.1 undecidable manual P 18 0.1466 148 -0.23 98
IV.GALF.HHZ. 2019-07-20T19:39:24.40 0.6 undecidable manual P 214 0.098 158 -0.6 45
IV.RESU.HHZ. 2019-07-20T19:39:23.99 1.0 undecidable manual P 0.4811 -5.89 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:1.7 0.000225 0.76 AML other m 2019-07-20T19:39:29.58
IV.MNO.SHE. ML:0 9.78E-5 0.32 AML other m 2019-07-20T19:39:30.28
IV.GALF.HHN. ML:1.4 0.000126 0.28 AML other m 2019-07-20T19:39:30.78
IV.MNO.SHN. ML:0 7.075E-5 0.6 AML other m 2019-07-20T19:39:31.30
IV.MUCR.HHE. ML:1 3.029807E-5 0.2816 AML other m 2019-07-20T19:39:33.79
IV.MUCR.HHN. ML:1.1 3.5388985E-5 3.4048 AML other m 2019-07-20T19:39:35.65
IV.HLNI.HHE. ML:0.9 1.4364555E-5 2.0992 AML other m 2019-07-20T19:39:38.92
IV.HLNI.HHN. ML:0.9 1.469161E-5 1.4976 AML other m 2019-07-20T19:39:40.38
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