Earthquake with magnitude of ML 1.5 on date 03-02-2020 and time 17:33:39 (Italy) in region 4 km S Troina (EN)

A magnitude ML 1.5 earthquake occured in region: 4 km S Troina (EN), on

  • 03-02-2020 16:33:39 (UTC)
  • 03-02-2020 17:33:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.75, 14.6 at 28 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 4 9373 9373
Gagliano Castelferrato EN 7 3593 12966
Cerami EN 11 2006 14972
Regalbuto EN 11 7277 22249
Agira EN 12 8345 30594
San Teodoro ME 14 1403 31997
CesarĂ² ME 15 2439 34436
Capizzi ME 15 3176 37612
Nissoria EN 17 3000 40612
Nicosia EN 17 13899 54511
Centuripe EN 19 5470 59981

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of Catania (314555 inhabitants)
52 Km W of Acireale (52622 inhabitants)
55 Km NE of Caltanissetta (63360 inhabitants)
82 Km NE of Gela (75827 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
98 Km SW of Messina (238439 inhabitants)
98 Km NW of Siracusa (122291 inhabitants)
100 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 1.5 2020-02-03
16:33:39
37.75 14.6 28 2020-02-03
16:39:13
Sala Sismica INGV-Roma 76169321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-03 16:33:39 ± 0.51
Latitude 37.75 ± 0.01
Longitude 14.60 ± 0.04
Depth (km) 28 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76169321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2697
Semi-minor axis of confidence ellipse (meter) 2143
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 2700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.55668
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 76169321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-03 16:39:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2020-02-03T16:33:56.72 0.3 undecidable manual S 151 0.4542 113 0.2 72
IV.MUCR.HHZ. 2020-02-03T16:33:54.41 0.3 undecidable manual S 36 0.3669 118 0.24 71
IV.RAFF.HHZ. 2020-02-03T16:33:51.78 0.3 undecidable manual P 200 0.5567 108 0.73 61
IV.HLNI.HHZ. 2020-02-03T16:33:48.90 0.3 undecidable manual P 151 0.4542 113 -0.51 66
IV.GALF.HHZ. 2020-02-03T16:33:48.29 0.3 undecidable manual S 213 0.0441 169 0.24 78
IV.MUCR.HHZ. 2020-02-03T16:33:47.90 0.3 undecidable manual P 36 0.3669 118 -0.16 74
IV.MSFR.HHZ. 2020-02-03T16:33:46.96 0.1 undecidable manual P 359 0.286 126 0.08 100
IV.GALF.HHZ. 2020-02-03T16:33:43.92 0.1 undecidable manual P 213 0.0441 169 -0.6 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:1.7 0.0002635 1.8 AML other m 2020-02-03T16:33:48.04
IV.GALF.HHN. ML:1.8 0.000314 0.3 AML other m 2020-02-03T16:33:50.35
IV.MUCR.HHN. ML:1.4 7.49E-5 0.72 AML other m 2020-02-03T16:33:54.70
IV.MUCR.HHE. ML:1.3 5.65E-5 0.8 AML other m 2020-02-03T16:33:55.83
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