Earthquake with magnitude of ML 1.5 on date 17-10-2020 and time 07:28:42 (Italy) in region 7 km N Troina (EN)

A magnitude ML 1.5 earthquake occured in region: 7 km N Troina (EN), on

  • 17-10-2020 05:28:42 (UTC)
  • 17-10-2020 07:28:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.85, 14.59 at 33 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 7 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 16 3593 21990
San Fratello ME 19 3707 25697
Maniace CT 19 3765 29462
Nicosia EN 20 13899 43361

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km W of Acireale (52622 inhabitants)
58 Km NW of Catania (314555 inhabitants)
61 Km NE of Caltanissetta (63360 inhabitants)
92 Km NE of Gela (75827 inhabitants)
93 Km W of Messina (238439 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
98 Km E of Bagheria (55387 inhabitants)
100 Km N of Vittoria (63339 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 1.5 2020-10-17
05:28:42
37.85 14.59 33 2020-10-17
06:20:09
Sala Sismica INGV-Roma 83837411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 05:28:42 ± 0.38
Latitude 37.85 ± 0.01
Longitude 14.59 ± 0.01
Depth (km) 33 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83837411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1291
Semi-minor axis of confidence ellipse (meter) 707
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 204
Circular confidence region, given by single value of horizontal uncertainty (meter) 1290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.64931
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 83837411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 06:20:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RAFF.HHZ. 2020-10-17T05:29:05.89 0.3 undecidable manual S 196 0.6493 110 1.09 50
IV.HLNI.HHZ. 2020-10-17T05:29:01.61 0.3 undecidable manual S 156 0.545 113 -0.32 68
IV.ECTS.HHZ. 2020-10-17T05:29:00.08 3.0 undecidable manual Sn 0.12 0
IV.CSLB.HHE. 2020-10-17T05:28:59.85 0.6 undecidable manual S 282 0.4299 120 0.97 36
IV.MUCR.HHZ. 2020-10-17T05:28:55.84 0.6 undecidable manual S 49 0.2977 131 0.18 49
IV.RAFF.HHZ. 2020-10-17T05:28:54.71 0.1 negative manual P 196 0.6493 110 -0.5 85
IV.HLNI.HHZ. 2020-10-17T05:28:53.84 0.1 undecidable manual P 156 0.545 113 0.28 93
IV.GALF.HHZ. 2020-10-17T05:28:52.15 0.6 undecidable manual S 188 0.1367 153 -0.5 48
IV.PLLN.EHE. 2020-10-17T05:28:51.14 0.1 undecidable manual P 293 0.3822 123 0.05 100
IV.CSLB.HHE. 2020-10-17T05:28:51.40 0.1 undecidable manual P 282 0.4299 120 -0.4 92
IV.PETRA.HHE. 2020-10-17T05:28:50.89 0.1 undecidable manual P 268 0.3759 123 -0.11 99
IV.MUCR.HHZ. 2020-10-17T05:28:49.76 0.3 negative manual P 49 0.2977 131 -0.18 74
IV.EPZF.HHZ. 2020-10-17T05:28:49.43 0.3 negative manual P 96 0.2113 141 0.53 70
IV.MSFR.HHZ. 2020-10-17T05:28:48.63 0.6 negative manual P 0 0.188 144 -0.03 52
IV.GALF.HHZ. 2020-10-17T05:28:47.29 1.0 positive manual P 188 0.1367 153 -0.91 20
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHE. ML:1.4 8.11E-5 0.34 AML other m 2020-10-17T05:28:58.44
IV.MUCR.HHN. ML:1.6 0.000106 0.42 AML other m 2020-10-17T05:28:59.41
IV.HLNI.HHE. ML:1.5 5.298458E-5 0.16 AML other m 2020-10-17T05:29:04.56
IV.HLNI.HHN. ML:1.7 7.7992905E-5 0.1792 AML other m 2020-10-17T05:29:03.77
IV.RAFF.HHE. ML:1.5 4.599456E-5 1.0176 AML other m 2020-10-17T05:29:09.55
IV.RAFF.HHN. ML:1.4 3.7901155E-5 1.5584 AML other m 2020-10-17T05:29:09.54
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