Earthquake with magnitude of ML 1.7 on date 27-10-2020 and time 05:44:28 (Italy) in region 8 km N Troina (EN)

A magnitude ML 1.7 earthquake occured in region: 8 km N Troina (EN), on

  • 27-10-2020 04:44:28 (UTC)
  • 27-10-2020 05:44:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.85, 14.61 at 41 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 8 9373 9373
San Teodoro ME 8 1403 10776
CesarĂ² ME 9 2439 13215
Cerami EN 10 2006 15221
Capizzi ME 12 3176 18397
Gagliano Castelferrato EN 17 3593 21990
Maniace CT 17 3765 25755
San Fratello ME 18 3707 29462

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km NW of Acireale (52622 inhabitants)
57 Km NW of Catania (314555 inhabitants)
63 Km NE of Caltanissetta (63360 inhabitants)
91 Km W of Messina (238439 inhabitants)
93 Km NE of Gela (75827 inhabitants)
95 Km W of Reggio di Calabria (183035 inhabitants)
100 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 1.7 2020-10-27
04:44:28
37.85 14.61 41 2020-10-27
05:56:59
Sala Sismica INGV-Roma 84171121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-27 04:44:28 ± 0.19
Latitude 37.85 ± 0.01
Longitude 14.61 ± 0.01
Depth (km) 41 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84171121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1099
Semi-minor axis of confidence ellipse (meter) 967
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100
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 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.71406
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:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 84171121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-27 05:56:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SERS.HHZ. 2020-10-27T04:45:00.59 3.0 negative manual Pn -0.6 0
IV.HAGA.HHZ. 2020-10-27T04:44:53.10 0.3 undecidable manual S 143 0.7141 95 0.44 63
IV.HCRL.HHZ. 2020-10-27T04:44:51.76 0.3 undecidable manual S 150 0.6619 95 0.35 65
IV.HLNI.HHZ. 2020-10-27T04:44:48.34 0.3 undecidable manual S 158 0.5468 99 -0.34 69
IV.PETRA.HHZ. 2020-10-27T04:44:45.95 1.0 undecidable manual S 267 0.3912 114 0.84 20
IV.PLLN.EHZ. 2020-10-27T04:44:45.43 0.6 undecidable manual S 291 0.393 113 0.29 48
IV.MUCR.HHZ. 2020-10-27T04:44:43.27 0.6 undecidable manual S 48 0.2806 129 0.44 47
IV.CAGR.HHE. 2020-10-27T04:44:42.88 0.6 undecidable manual S 201 0.2482 134 0.62 44
IV.HAGA.HHZ. 2020-10-27T04:44:42.38 0.1 undecidable manual P 143 0.7141 95 0.01 93
IV.MSFR.HHZ. 2020-10-27T04:44:41.02 0.3 undecidable manual S 355 0.1799 145 -0.18 75
IV.HCRL.HHZ. 2020-10-27T04:44:41.58 0.1 undecidable manual P 150 0.6619 95 -0.07 95
IV.GALF.HHZ. 2020-10-27T04:44:40.72 0.6 undecidable manual S 193 0.1484 151 -0.08 52
IV.HLNI.HHZ. 2020-10-27T04:44:39.63 0.1 undecidable manual P 158 0.5468 99 -0.44 90
IV.PLLN.EHZ. 2020-10-27T04:44:38.32 0.1 undecidable manual P 291 0.393 113 0.29 96
IV.PETRA.HHZ. 2020-10-27T04:44:37.94 0.1 undecidable manual P 267 0.3912 114 -0.06 98
IV.MUCR.HHZ. 2020-10-27T04:44:36.90 0.1 undecidable manual P 48 0.2806 129 0.21 99
IV.CAGR.HHE. 2020-10-27T04:44:36.52 0.1 undecidable manual P 201 0.2482 134 0.16 100
IV.MSFR.HHZ. 2020-10-27T04:44:35.46 0.1 undecidable manual P 355 0.1799 145 -0.29 98
IV.GALF.HHZ. 2020-10-27T04:44:34.57 0.1 undecidable manual P 193 0.1484 151 -0.95 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:1.8 0.0001795 0.94 AML other m 2020-10-27T04:44:41.25
IV.MSFR.HHN. ML:1.5 9.46E-5 1.28 AML other m 2020-10-27T04:44:42.81
IV.MSFR.HHE. ML:1.4 7.34E-5 0.44 AML other m 2020-10-27T04:44:42.53
IV.GALF.HHN. ML:1.8 0.000225 1.64 AML other m 2020-10-27T04:44:42.90
IV.MUCR.HHN. ML:1.5 7.775E-5 1.04 AML other m 2020-10-27T04:44:45.23
IV.MUCR.HHE. ML:1.3 4.755E-5 0.3 AML other m 2020-10-27T04:44:45.75
IV.PETRA.HHN. ML:1.6 7.335E-5 1.28 AML other m 2020-10-27T04:44:49.12
IV.PETRA.HHE. ML:1.6 9.04E-5 1.48 AML other m 2020-10-27T04:44:49.97
IV.HLNI.HHE. ML:1.6 5.865E-5 1.04 AML other m 2020-10-27T04:44:50.69
IV.HLNI.HHN. ML:1.7 7.435E-5 1.16 AML other m 2020-10-27T04:44:51.05
IV.HCRL.HHN. ML:1.8 8.695E-5 0.68 AML other m 2020-10-27T04:44:52.28
IV.HCRL.HHE. ML:2 0.0001395 0.18 AML other m 2020-10-27T04:44:53.38
IV.HAGA.HHE. ML:2.2 0.0002035 0.42 AML other m 2020-10-27T04:44:53.73
IV.HAGA.HHN. ML:1.9 9.76E-5 1.66 AML other m 2020-10-27T04:44:53.85
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