Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 12-10-2020 and time 03:42:29 (UTC) in region 3 km NE Sellano (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km NE Sellano (PG), on

  • 12-10-2020 03:42:29 (UTC)
  • 12-10-2020 05:42:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9120, 12.9430 at 11 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sellano PG 3 1079 1079
Preci PG 9 724 1803
Monte Cavallo MC 10 145 1948
Cerreto di Spoleto PG 11 1075 3023
Visso MC 12 1107 4130
Trevi PG 16 8469 12599
Ussita MC 16 444 13043
Campello sul Clitunno PG 17 2442 15485
Vallo di Nera PG 17 364 15849
Pieve Torina MC 17 1458 17307
Castelsantangelo sul Nera MC 17 281 17588
Serravalle di Chienti MC 18 1070 18658
Norcia PG 18 4957 23615
Fiordimonte MC 18 202 23817

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
50 Km E of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.8 2020-10-12
03:42:29		 42.9125 12.9427 11 2020-10-12
03:50:42		 Sala Sismica INGV-Roma 83719741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-12 03:42:29 ± 0.06
Latitude 42.9125 ± 0.0036
Longitude 12.9427 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83719741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 459
Semi-minor axis of confidence ellipse (meter) 383
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.35793
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 83719741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-12 03:50:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARRO.EHN. 2020-10-12T03:42:43.37 0.3 undecidable manual S 201 39.7269 50 0.38 67
IV.LNSS.HHN. 2020-10-12T03:42:41.52 0.6 undecidable manual S 167 35.2425 50 -0.29 46
IV.PF6.EHE. 2020-10-12T03:42:41.00 0.6 undecidable manual S 39 32.2455 50 -0.01 49
IV.MOMA.HHE. 2020-10-12T03:42:41.44 0.6 undecidable manual S 248 32.6451 50 0.34 45
IV.CSP1.EHZ. 2020-10-12T03:42:40.29 0.6 undecidable manual S 47 29.1486 50 0.12 48
IV.ASSB.HHZ. 2020-10-12T03:42:39.35 0.6 undecidable manual S 302 27.1506 50 -0.3 46
IV.GAVE.EHZ. 2020-10-12T03:42:38.83 0.6 undecidable manual S 189 24.753 50 -0.17 48
IV.MC2.EHZ. 2020-10-12T03:42:38.36 0.3 undecidable manual S 90 20.0688 118 0.67 63
IV.MML1.HNE. 2020-10-12T03:42:38.53 0.6 undecidable manual S 6 22.4553 50 0.15 48
IV.ARRO.EHN. 2020-10-12T03:42:37.30 0.1 undecidable manual P 201 39.7269 50 -0.13 94
IV.ASSB.HHZ. 2020-10-12T03:42:36.07 0.1 undecidable manual P 302 27.1506 50 0.57 86
IV.MOMA.HHE. 2020-10-12T03:42:36.21 0.1 undecidable manual P 248 32.6451 50 -0.13 95
IV.LNSS.HHN. 2020-10-12T03:42:36.44 0.1 undecidable manual P 167 35.2425 50 -0.31 91
IV.NRCA.HHZ. 2020-10-12T03:42:36.49 0.6 undecidable manual S 122 16.4724 123 -0.14 49
IV.PF6.EHE. 2020-10-12T03:42:36.05 0.1 undecidable manual P 39 32.2455 50 -0.24 93
IV.FDMO.HHZ. 2020-10-12T03:42:36.90 0.6 undecidable manual S 40 18.0708 120 -0.2 48
IV.GAVE.EHZ. 2020-10-12T03:42:35.03 0.6 negative manual P 189 24.753 50 -0.1 48
IV.CSP1.EHZ. 2020-10-12T03:42:35.76 0.3 positive manual P 47 29.1486 50 -0.04 73
IV.MML1.HNE. 2020-10-12T03:42:34.72 0.1 undecidable manual P 6 22.4553 50 -0.05 98
IV.CESI.HHZ. 2020-10-12T03:42:34.98 0.6 undecidable manual S 343 10.6782 135 -0.08 50
IT.MTCL.HGN. 2020-10-12T03:42:34.62 0.6 undecidable manual S 27 10.1787 136 -0.3 48
IV.MC2.EHZ. 2020-10-12T03:42:34.74 0.1 undecidable manual P 90 20.0688 118 0.37 92
IV.FEMA.HNN. 2020-10-12T03:42:34.87 0.6 undecidable manual S 58 10.2786 136 -0.09 50
IV.NRCA.HHZ. 2020-10-12T03:42:33.74 0.6 undecidable manual P 122 16.4724 123 -0.02 50
IV.FDMO.HHZ. 2020-10-12T03:42:33.98 0.6 positive manual P 40 18.0708 120 -0.05 49
IV.FEMA.HNN. 2020-10-12T03:42:32.41 0.3 undecidable manual P 58 10.2786 136 -0.38 70
IV.CESI.HHZ. 2020-10-12T03:42:32.98 0.6 negative manual P 343 10.6782 135 0.13 49
IT.MTCL.HGN. 2020-10-12T03:42:32.83 0.1 undecidable manual P 27 10.1787 136 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.8 0.00007201923 0.12 AML other m 2020-10-12T03:42:35.12
IV.CESI.HHN. ML:1.0 0.000118465975 0.2192 AML other m 2020-10-12T03:42:35.28
IV.CESI.HNE. ML:1.0 0.000106512045 0.1392 AML other m 2020-10-12T03:42:35.12
IV.CESI.HNN. ML:1.1 0.0001535017 0.2192 AML other m 2020-10-12T03:42:35.39
IV.NRCA.HHE. ML:0.5 0.0000282727815 0.0784 AML other m 2020-10-12T03:42:37.63
IV.NRCA.HHN. ML:0.5 0.0000324344 0.1392 AML other m 2020-10-12T03:42:37.30
IV.NRCA.HNE. ML:1.1 0.00011897499999999999 0.6704 AML other m 2020-10-12T03:42:36.63
IV.NRCA.HNN. ML:1.2 0.0001355974 0.6896 AML other m 2020-10-12T03:42:38.49
IV.FDMO.HHE. ML:0.6 0.000030894365 0.4 AML other m 2020-10-12T03:42:36.00
IV.FDMO.HHN. ML:0.5 0.00002349191 0.1008 AML other m 2020-10-12T03:42:37.42
IV.GAVE.EHE. ML:0.8 0.000038689399999999996 1.2992 AML other m 2020-10-12T03:42:39.68
IV.GAVE.EHN. ML:0.7 0.000031127622000000003 0.9008 AML other m 2020-10-12T03:42:39.29
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download