Earthquake with magnitude of ML 1.8 on date 17-10-2020 and time 06:09:07 (Italy) in region 5 km N Troina (EN)

A magnitude ML 1.8 earthquake occured in region: 5 km N Troina (EN), on

  • 17-10-2020 04:09:07 (UTC)
  • 17-10-2020 06:09:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.83, 14.59 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 5 9373 9373
Cerami EN 8 2006 11379
San Teodoro ME 10 1403 12782
Capizzi ME 10 3176 15958
CesarĂ² ME 11 2439 18397
Gagliano Castelferrato EN 14 3593 21990
Nicosia EN 19 13899 35889
Maniace CT 19 3765 39654
Regalbuto EN 20 7277 46931
Agira EN 20 8345 55276

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km W of Acireale (52622 inhabitants)
57 Km NW of Catania (314555 inhabitants)
60 Km NE of Caltanissetta (63360 inhabitants)
90 Km NE of Gela (75827 inhabitants)
94 Km W of Messina (238439 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
98 Km N of Vittoria (63339 inhabitants)
99 Km E of Bagheria (55387 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
04:09:07
37.83 14.59 38 2020-10-17
04:16:33
Sala Sismica INGV-Roma 83834501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 04:09:07 ± 0.39
Latitude 37.83 ± 0.01
Longitude 14.59 ± 0.02
Depth (km) 38 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83834501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1600
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 131
Circular confidence region, given by single value of horizontal uncertainty (meter) 1600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.5288
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 83834501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 04:16:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-10-17T04:09:34.47 3.0 undecidable manual Sg 0.17 0
IV.HLNI.HHZ. 2020-10-17T04:09:27.47 1.0 undecidable manual S 155 0.5288 119 0.29 23
IV.SSY.HHZ. 2020-10-17T04:09:22.49 3.0 negative manual Pg -0.23 0
IV.MUCR.HHZ. 2020-10-17T04:09:21.92 0.6 undecidable manual S 46 0.3085 134 0.03 49
IV.ESML.HHZ. 2020-10-17T04:09:20.84 3.0 undecidable manual P 0
IV.HLNI.HHZ. 2020-10-17T04:09:18.44 0.1 undecidable manual P 155 0.5288 119 -0.31 90
IV.GALF.HHZ. 2020-10-17T04:09:18.70 0.3 undecidable manual S 190 0.1196 159 -0.06 77
IV.PLLN.EHZ. 2020-10-17T04:09:16.80 0.1 undecidable manual P 295 0.3903 127 0.04 98
IV.MUCR.HHZ. 2020-10-17T04:09:15.70 0.1 undecidable manual P 46 0.3085 134 0.01 100
IV.CAGR.HHE. 2020-10-17T04:09:15.32 0.1 undecidable manual P 200 0.2194 145 0.62 89
IV.EPZF.HHZ. 2020-10-17T04:09:14.81 0.1 undecidable manual P 91 0.2086 146 0.21 98
IV.MSFR.HHZ. 2020-10-17T04:09:14.39 0.6 negative manual P 360 0.205 146 -0.17 50
IV.GALF.HHZ. 2020-10-17T04:09:13.18 0.3 negative manual P 190 0.1196 159 -0.71 65
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.1 0.0005138973 0.6208 AML other m 2020-10-17T04:09:18.59
IV.GALF.HHN. ML:1.9 0.00030215175 0.6176 AML other m 2020-10-17T04:09:20.57
IV.GALF.HNE. ML:1.5 0.00012536255 0.7904 AML other m 2020-10-17T04:09:18.63
IV.GALF.HNN. ML:1.5 0.000121083625 1.1296 AML other m 2020-10-17T04:09:25.12
IV.MSFR.HHE. ML:1.4 8.924043E-5 0.9408 AML other m 2020-10-17T04:09:21.00
IV.MSFR.HHN. ML:1.4 8.51618E-5 1.2192 AML other m 2020-10-17T04:09:14.93
IV.EPZF.HHE. ML:1.6 0.00014008609 0.6816 AML other m 2020-10-17T04:09:24.92
IV.EPZF.HHN. ML:1.8 0.0001841172 0.3424 AML other m 2020-10-17T04:09:25.06
IV.MUCR.HHE. ML:1.5 8.763142E-5 0.32 AML other m 2020-10-17T04:09:24.17
IV.MUCR.HHN. ML:1.5 8.8401515E-5 0.3584 AML other m 2020-10-17T04:09:23.44
IV.PLLN.EHE. ML:2.2 0.00033420365 0.6016 AML other m 2020-10-17T04:09:27.40
IV.PLLN.EHN. ML:2.2 0.00033896515 0.4608 AML other m 2020-10-17T04:09:27.11
IV.ESML.HHE. ML:1.9 0.0002072535 0.7008 AML other m 2020-10-17T04:09:28.21
IV.ESML.HHN. ML:2 0.0002455385 0.7008 AML other m 2020-10-17T04:09:26.25
IV.SSY.HHE. ML:2.4 0.00030969005 0.2784 AML other m 2020-10-17T04:09:34.64
IV.SSY.HHN. ML:2.6 0.00046322285 0.24 AML other m 2020-10-17T04:09:40.64
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