Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 02-08-2020 and time 16:06:39 (Italy) in region 1 km E Sellano (PG)

A magnitude ML 0.9 earthquake occured in region: 1 km E Sellano (PG), on

  • 02-08-2020 14:06:39 (UTC)
  • 02-08-2020 16:06:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8840, 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 1 1079 1079
Cerreto di Spoleto PG 7 1075 2154
Preci PG 8 724 2878
Visso MC 13 1107 3985
Monte Cavallo MC 13 145 4130
Vallo di Nera PG 14 364 4494
Campello sul Clitunno PG 15 2442 6936
Trevi PG 16 8469 15405
Norcia PG 16 4957 20362
Castelsantangelo sul Nera MC 17 281 20643
Ussita MC 17 444 21087
Sant'Anatolia di Narco PG 19 564 21651
Poggiodomo PG 19 117 21768
Cascia PG 19 3217 24985
Pieve Torina MC 20 1458 26443

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
100 Km N of Guidonia Montecelio (88673 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 0.9 2020-08-02
14:06:39		 42.8842 12.9427 11 2020-08-02
14:12:08		 Sala Sismica INGV-Roma 81579051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-02 14:06:39 ± 0.07
Latitude 42.8842 ± 0.0036
Longitude 12.9427 ± 0.0049
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 81579051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 329
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 23
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28419
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 81579051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-02 14:12:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2020-08-02T14:06:50.64 0.3 undecidable manual S 43 31.3464 50 0.16 73
IV.ASSB.HHZ. 2020-08-02T14:06:49.57 0.3 undecidable manual S 307 28.9488 50 -0.28 71
IV.FDMO.HHZ. 2020-08-02T14:06:47.51 0.1 undecidable manual S 35 20.5683 50 -0.09 100
IV.MOMA.HNZ. 2020-08-02T14:06:46.18 0.3 undecidable manual P 254 31.5462 50 0.25 71
IV.PE3.EHZ. 2020-08-02T14:06:46.24 3.0 undecidable manual P -0.08 0
IV.CESI.HNZ. 2020-08-02T14:06:45.74 0.3 undecidable manual S 347 13.7751 129 -0.01 77
IV.ASSB.HHZ. 2020-08-02T14:06:45.48 0.3 undecidable manual P 307 28.9488 50 -0.05 74
IT.MTCL.HGE. 2020-08-02T14:06:45.37 0.3 undecidable manual S 21 12.9759 130 -0.19 75
IV.CSP1.EHZ. 2020-08-02T14:06:45.98 0.3 undecidable manual P 43 31.3464 50 0.08 74
IV.FEMA.HNE. 2020-08-02T14:06:45.51 0.3 undecidable manual S 45 12.2766 132 0.15 75
IV.NRCA.HHE. 2020-08-02T14:06:45.91 0.1 undecidable manual S 112 15.0738 126 -0.2 99
IV.FDMO.HHZ. 2020-08-02T14:06:44.21 0.3 undecidable manual P 35 20.5683 50 -0.03 76
IV.FEMA.HNE. 2020-08-02T14:06:43.14 0.3 undecidable manual P 45 12.2766 132 0.2 74
IV.NRCA.HHE. 2020-08-02T14:06:43.35 0.3 undecidable manual P 112 15.0738 126 -0.03 77
IV.CESI.HNZ. 2020-08-02T14:06:43.28 0.3 undecidable manual P 347 13.7751 129 0.11 76
IT.MTCL.HGE. 2020-08-02T14:06:43.10 0.3 undecidable manual P 21 12.9759 130 0.04 77
IV.FOSV.EHZ. 2020-08-02T14:06:40.40 3.0 undecidable manual P 0 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.8 0.00004124999999999999 0.42 AML other m 2020-08-02T14:06:47.81
IV.FDMO.HHE. ML:1.0 0.00006695000000000001 0.36 AML other m 2020-08-02T14:06:47.72
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