Earthquake with magnitude of ML 1.6 on date 17-02-2020 and time 19:31:58 (UTC) in region 2 km S Troina (EN)

A magnitude ML 1.6 earthquake occured in region: 2 km S Troina (EN), on

  • 17-02-2020 19:31:58 (UTC)
  • 17-02-2020 20:31:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.77, 14.6 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 2 9373 9373
Gagliano Castelferrato EN 9 3593 12966
Cerami EN 9 2006 14972
San Teodoro ME 13 1403 16375
CesarĂ² ME 13 2439 18814
Capizzi ME 14 3176 21990
Regalbuto EN 14 7277 29267
Agira EN 14 8345 37612
Nicosia EN 18 13899 51511
Nissoria EN 18 3000 54511

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km NW of Catania (314555 inhabitants)
53 Km W of Acireale (52622 inhabitants)
56 Km NE of Caltanissetta (63360 inhabitants)
84 Km NE of Gela (75827 inhabitants)
92 Km N of Vittoria (63339 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
96 Km SW of Messina (238439 inhabitants)
99 Km W of Reggio di Calabria (183035 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 1.6 2020-02-17
19:31:58
37.77 14.6 29 2020-02-17
19:51:25
Sala Sismica INGV-Roma 76607951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-17 19:31:58 ± 0.43
Latitude 37.77 ± 0.01
Longitude 14.60 ± 0.03
Depth (km) 29 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76607951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2685
Semi-minor axis of confidence ellipse (meter) 326
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 2690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.72036
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 76607951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-17 19:51:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-02-17T19:32:23.44 0.3 undecidable manual S 148 0.7204 105 0.76 56
IV.RAFF.HHZ. 2020-02-17T19:32:19.51 0.3 undecidable manual S 199 0.5792 109 0.84 55
IV.HLNI.HHZ. 2020-02-17T19:32:15.38 0.3 undecidable manual S 153 0.4757 113 -0.42 65
IV.MUCR.HHZ. 2020-02-17T19:32:12.44 0.3 undecidable manual S 39 0.348 122 -0.02 73
IV.SSY.HHZ. 2020-02-17T19:32:11.59 0.1 undecidable manual P 148 0.7204 105 -0.75 74
IV.MSFR.HHZ. 2020-02-17T19:32:10.82 0.6 undecidable manual S 359 0.2626 131 0.42 45
IV.RAFF.HHZ. 2020-02-17T19:32:10.47 0.1 undecidable manual P 199 0.5792 109 0.43 85
IV.EPZF.HHZ. 2020-02-17T19:32:09.85 0.3 undecidable manual S 76 0.2122 137 0.53 68
IV.ESML.HHZ. 2020-02-17T19:32:07.88 3.0 undecidable manual S -0.15 0
IV.HLNI.HHZ. 2020-02-17T19:32:07.61 0.6 positive manual P 153 0.4757 113 -0.77 38
IV.GALF.HHZ. 2020-02-17T19:32:06.72 0.6 undecidable manual S 202 0.0657 165 -0.44 47
IV.MUCR.HHZ. 2020-02-17T19:32:06.52 0.1 undecidable manual P 39 0.348 122 0.08 96
IV.MSFR.HHZ. 2020-02-17T19:32:05.46 0.3 positive manual P 359 0.2626 131 0.2 71
IV.EPZF.HHZ. 2020-02-17T19:32:04.34 1.0 negative manual P 76 0.2122 137 -0.29 24
IV.CAGR.HHZ. 2020-02-17T19:32:04.23 0.1 undecidable manual P 207 0.1682 144 0.07 100
IV.GALF.HHZ. 2020-02-17T19:32:02.43 0.1 negative manual P 202 0.0657 165 -0.96 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHN. ML:1.9 0.000393 1.62 AML other m 2020-02-17T19:32:07.17
IV.GALF.HHE. ML:2 0.0004535 0.44 AML other m 2020-02-17T19:32:07.68
IV.EPZF.HHE. ML:1.6 0.0001525 0.44 AML other m 2020-02-17T19:32:10.45
IV.MUCR.HHN. ML:1.4 7.63E-5 0.6 AML other m 2020-02-17T19:32:13.25
IV.MUCR.HHE. ML:1.5 8.68E-5 0.82 AML other m 2020-02-17T19:32:14.01
IV.HLNI.HHE. ML:1.4 4.955E-5 0.78 AML other m 2020-02-17T19:32:15.94
IV.HLNI.HHN. ML:1.5 5.8E-5 1.2 AML other m 2020-02-17T19:32:16.32
IV.EPZF.HHN. ML:2 0.0003445 0.8 AML other m 2020-02-17T19:32:16.07
IV.SSY.HHN. ML:2.4 0.0002915 0.24 AML other m 2020-02-17T19:32:26.75
IV.SSY.HHE. ML:2.2 0.000184 0.96 AML other m 2020-02-17T19:32:27.18
IV.MSFR.HHE. ML:0.9 2.8729035E-5 0.2176 AML other m 2020-02-17T19:32:12.53
IV.MSFR.HHN. ML:0.9 2.988522E-5 0.6016 AML other m 2020-02-17T19:32:12.05
IV.RAFF.HHE. ML:1.6 5.9234325E-5 0.4608 AML other m 2020-02-17T19:32:21.52
IV.RAFF.HHN. ML:1.5 5.297898E-5 0.3584 AML other m 2020-02-17T19:32:23.15
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