Earthquake with magnitude of ML 1.8 on date 17-10-2020 and time 14:25:34 (Italy) in region 6 km E Troina (EN)

A magnitude ML 1.8 earthquake occured in region: 6 km E Troina (EN), on

  • 17-10-2020 12:25:34 (UTC)
  • 17-10-2020 14:25:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.77, 14.67 at 38 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 6 9373 9373
CesarĂ² ME 9 2439 11812
San Teodoro ME 10 1403 13215
Regalbuto EN 13 7277 20492
Gagliano Castelferrato EN 13 3593 24085
Bronte CT 15 19172 43257
Cerami EN 15 2006 45263
Maniace CT 16 3765 49028
Centuripe EN 17 5470 54498
Agira EN 18 8345 62843
Adrano CT 19 36122 98965
Maletto CT 19 3920 102885
Capizzi ME 19 3176 106061

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NW of Catania (314555 inhabitants)
47 Km W of Acireale (52622 inhabitants)
62 Km NE of Caltanissetta (63360 inhabitants)
86 Km NE of Gela (75827 inhabitants)
91 Km SW of Messina (238439 inhabitants)
92 Km N of Vittoria (63339 inhabitants)
94 Km W of Reggio di Calabria (183035 inhabitants)
94 Km N of Ragusa (73313 inhabitants)
96 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
Reviewed
Rev100
ML 1.8 2020-10-17
12:25:34
37.77 14.67 38 2020-10-17
12:29:48
Sala Sismica INGV-Roma 83849071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 12:25:34 ± 0.22
Latitude 37.77 ± 0.03
Longitude 14.67 ± 0.02
Depth (km) 38 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83849071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3130
Semi-minor axis of confidence ellipse (meter) 1560
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 3130
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 205
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44337
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 83849071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 12:29:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2020-10-17T12:26:07.79 3.0 undecidable manual S 1.92 0
IV.AGST.EHZ. 2020-10-17T12:26:00.22 3.0 undecidable manual S -0.66 0
IV.HAGA.HHZ. 2020-10-17T12:25:59.94 3.0 undecidable manual S 0.48 0
IV.PETRA.HHZ. 2020-10-17T12:25:53.33 0.6 undecidable manual S 279 0.4434 90 0.49 47
IV.SSY.HHZ. 2020-10-17T12:25:50.93 3.0 positive manual P 0.85 0
IV.MUCR.HHZ. 2020-10-17T12:25:49.82 0.6 undecidable manual S 30 0.3193 117 -0.15 51
IV.MSFR.HHZ. 2020-10-17T12:25:47.11 3.0 undecidable manual S 347 0.2734 125 -1.92 0
IV.GALF.HHZ. 2020-10-17T12:25:46.46 0.6 undecidable manual S 235 0.0998 158 0.01 55
IV.HLNI.HHZ. 2020-10-17T12:25:46.65 3.0 positive manual Pg -0.11 0
IV.PETRA.HHZ. 2020-10-17T12:25:44.87 0.6 negative manual P 279 0.4434 90 -0.42 47
IV.MUCR.HHZ. 2020-10-17T12:25:43.89 0.1 positive manual P 30 0.3193 117 0.25 100
IV.MSFR.HHZ. 2020-10-17T12:25:42.70 0.6 undecidable manual P 347 0.2734 125 -0.4 49
IV.GALF.HHZ. 2020-10-17T12:25:41.63 0.3 positive manual P 235 0.0998 158 0.02 82
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.3 0.000795 0.56 AML other m 2020-10-17T12:25:46.71
IV.GALF.HHN. ML:2 0.000342 0.72 AML other m 2020-10-17T12:25:47.36
IV.MUCR.HHN. ML:1.6 9.94E-5 1.38 AML other m 2020-10-17T12:25:52.02
IV.MUCR.HHE. ML:1.6 9.395E-5 0.34 AML other m 2020-10-17T12:25:53.18
IV.HLNI.HHN. ML:1.4 5.685E-5 1.24 AML other m 2020-10-17T12:25:58.04
IV.HLNI.HHE. ML:1.5 5.805E-5 1.52 AML other m 2020-10-17T12:25:58.77
IV.HAGA.HHE. ML:2.2 0.000219 0.3 AML other m 2020-10-17T12:26:00.64
IV.HAGA.HHN. ML:2 0.00016 0.34 AML other m 2020-10-17T12:26:00.63
IV.AGST.EHE. ML:2.3 0.0002755 1.14 AML other m 2020-10-17T12:26:01.42
IV.AGST.EHN. ML:2.2 0.0002155 1.6 AML other m 2020-10-17T12:26:02.19
IV.SSY.HHE. ML:2.4 0.0003615 0.22 AML other m 2020-10-17T12:26:02.82
IV.SSY.HHN. ML:2.7 0.0006885 0.24 AML other m 2020-10-17T12:26:03.64
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