Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 17-09-2020 and time 15:15:11 (Italy) in region 4 km NE Sellano (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km NE Sellano (PG), on

  • 17-09-2020 13:15:11 (UTC)
  • 17-09-2020 15:15:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9090, 12.9650 at 10 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 4 1079 1079
Preci PG 7 724 1803
Monte Cavallo MC 10 145 1948
Visso MC 11 1107 3055
Cerreto di Spoleto PG 11 1075 4130
Ussita MC 15 444 4574
Castelsantangelo sul Nera MC 16 281 4855
Norcia PG 17 4957 9812
Pieve Torina MC 17 1458 11270
Vallo di Nera PG 18 364 11634
Fiordimonte MC 18 202 11836
Trevi PG 18 8469 20305
Campello sul Clitunno PG 18 2442 22747
Serravalle di Chienti MC 18 1070 23817
Pievebovigliana MC 20 866 24683

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
52 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
89 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 1.2 2020-09-17
13:15:11		 42.909 12.9647 10 2020-09-17
13:25:07		 Sala Sismica INGV-Roma 82982671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 13:15:11 ± 0.06
Latitude 42.9090 ± 0.0027
Longitude 12.9647 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82982671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
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) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43167
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 82982671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-17 13:25:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RCAV.EHZ. 2020-09-17T13:15:47.53 3.0 undecidable manual S -0.02 0
IV.EL6.EHZ. 2020-09-17T13:15:27.63 0.3 undecidable manual S 13 47.9187 50 0.4 67
IV.MMO1.EHZ. 2020-09-17T13:15:22.09 0.6 undecidable manual S 92 29.4483 50 -0.21 48
IV.GAVE.EHZ. 2020-09-17T13:15:21.09 0.3 undecidable manual S 193 24.753 50 0.05 75
IV.CSP1.EHZ. 2020-09-17T13:15:21.88 0.3 undecidable manual S 44 28.1496 50 -0.07 74
IV.ASSB.HHZ. 2020-09-17T13:15:21.98 0.6 undecidable manual S 301 28.9488 50 -0.18 48
IV.EL6.EHZ. 2020-09-17T13:15:20.79 0.3 undecidable manual P 13 47.9187 50 0.07 71
IV.NRCA.HHZ. 2020-09-17T13:15:18.07 0.3 undecidable manual S 124 14.7741 125 0 77
IV.FDMO.HHZ. 2020-09-17T13:15:18.72 0.1 undecidable manual S 35 17.2716 121 -0.09 100
IV.ASSB.HHZ. 2020-09-17T13:15:17.69 0.1 undecidable manual P 301 28.9488 50 -0.1 98
IV.MMO1.EHZ. 2020-09-17T13:15:17.81 0.3 undecidable manual P 92 29.4483 50 -0.06 74
IV.GAVE.EHZ. 2020-09-17T13:15:17.18 0.3 undecidable manual P 193 24.753 50 0.04 75
IV.CSP1.EHZ. 2020-09-17T13:15:17.60 0.1 undecidable manual P 44 28.1496 50 -0.06 99
IV.NRCA.HHZ. 2020-09-17T13:15:15.53 0.1 undecidable manual P 124 14.7741 125 0.1 100
IV.FDMO.HHZ. 2020-09-17T13:15:15.90 0.3 undecidable manual P 35 17.2716 121 0.05 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.0001825 0.76 AML other m 2020-09-17T13:15:18.80
IV.NRCA.HHE. ML:1.1 0.000129 0.08 AML other m 2020-09-17T13:15:18.88
IV.FDMO.HHE. ML:1.2 0.000152 1.68 AML other m 2020-09-17T13:15:19.00
IV.FDMO.HHN. ML:1.0 0.0000863 0.1 AML other m 2020-09-17T13:15:19.01
IV.GAVE.EHN. ML:1.4 0.000146 0.14 AML other m 2020-09-17T13:15:21.33
IV.GAVE.EHE. ML:1.4 0.000167 0.22 AML other m 2020-09-17T13:15:21.23
IV.ASSB.HHE. ML:1.2 0.00007805000000000001 0.12 AML other m 2020-09-17T13:15:22.25
IV.ASSB.HHN. ML:1.0 0.00005015 0.36 AML other m 2020-09-17T13:15:22.32
IV.CSP1.EHE. ML:1.1 0.00006368314999999999 0.1344 AML other m 2020-09-17T13:15:22.31
IV.CSP1.EHN. ML:1.3 0.000102619855 0.2368 AML other m 2020-09-17T13:15:22.55
IV.EL6.EHE. ML:1.3 0.00006153869 1.8816 AML other m 2020-09-17T13:15:28.99
IV.EL6.EHN. ML:1.2 0.000047120125 0.2176 AML other m 2020-09-17T13:15:28.52
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