Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 15-08-2021 and time 14:13:25 (UTC) in region 7 km SE Gubbio (PG)

A magnitude ML 0.3 earthquake occured in region: 7 km SE Gubbio (PG), on

  • 15-08-2021 14:13:25 (UTC)
  • 15-08-2021 16:13:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3010, 12.6300 at 9 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
Gubbio PG 7 32216 32216
Costacciaro PG 9 1216 33432
Sigillo PG 10 2404 35836
Fossato di Vico PG 11 2840 38676
Scheggia e Pascelupo PG 12 1393 40069
Gualdo Tadino PG 15 15208 55277
Valfabbrica PG 16 3389 58666
Cantiano PU 19 2245 60911

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Perugia (166134 inhabitants)
39 Km N of Foligno (57155 inhabitants)
63 Km E of Arezzo (99543 inhabitants)
68 Km SW of Fano (60888 inhabitants)
72 Km SW of Pesaro (94582 inhabitants)
80 Km W of Ancona (100861 inhabitants)
82 Km N of Terni (111501 inhabitants)
85 Km S of Rimini (147750 inhabitants)
98 Km SE of Cesena (96758 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 0.3 2021-08-15
14:13:25		 43.3012 12.6302 9 2021-08-15
14:42:15		 Sala Sismica INGV-Roma 94202871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-15 14:13:25 ± 0.16
Latitude 43.3012 ± 0.0027
Longitude 12.6302 ± 0.0037
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94202871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24462
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 94202871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-15 14:42:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-08-15T14:13:35.96 3.0 undecidable manual S 0
IV.PIEI.HHZ. 2021-08-15T14:13:35.34 0.3 undecidable manual S 344 27.1506 108 -0.18 71
IV.ATVO.HHZ. 2021-08-15T14:13:33.26 0.1 undecidable manual S 297 20.1687 114 0 99
IV.ARVD.HHZ. 2021-08-15T14:13:32.73 3.0 undecidable manual P 0
IV.PIEI.HHZ. 2021-08-15T14:13:31.54 0.3 undecidable manual P 344 27.1506 108 0.21 70
IV.ATCC.EHZ. 2021-08-15T14:13:31.21 0.1 undecidable manual S 176 12.876 125 0.15 97
IV.ATSC.EHZ. 2021-08-15T14:13:31.62 0.1 undecidable manual S 18 14.3745 122 0.13 97
IV.MURB.HHZ. 2021-08-15T14:13:30.23 0.3 undecidable manual S 244 9.4794 133 0.09 74
IV.FOSV.EHZ. 2021-08-15T14:13:30.24 0.1 undecidable manual S 94 10.5783 130 -0.19 97
IV.ATSC.EHZ. 2021-08-15T14:13:29.12 0.1 undecidable manual P 18 14.3745 122 0.12 97
IV.ATVO.HHZ. 2021-08-15T14:13:29.92 0.1 undecidable manual P 297 20.1687 114 -0.1 97
IV.FOSV.EHZ. 2021-08-15T14:13:28.37 0.1 undecidable manual P 94 10.5783 130 -0.02 100
IV.ATCC.EHZ. 2021-08-15T14:13:28.76 0.1 undecidable manual P 176 12.876 125 0.01 100
IV.MURB.HHZ. 2021-08-15T14:13:28.02 0.1 undecidable manual P 244 9.4794 133 -0.21 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.4 0.000028250000000000002 0.26 AML other m 2021-08-15T14:13:31.68
IV.FOSV.EHN. ML:0.1 0.000017 1.36 AML other m 2021-08-15T14:13:31.01
IV.MURB.HHE. ML:1.0 0.000126 0.28 AML other m 2021-08-15T14:13:32.43
IV.ATVO.HHN. ML:0.0 0.00001205 0.56 AML other m 2021-08-15T14:13:33.94
IV.ATVO.HHE. ML:0.0 0.0000152 0.62 AML other m 2021-08-15T14:13:33.64
IV.ATCC.EHE. ML:0.4 0.000029849999999999997 0.52 AML other m 2021-08-15T14:13:34.50
IV.MURB.HHN. ML:0.7 0.0000738 0.28 AML other m 2021-08-15T14:13:34.12
IV.FOSV.EHE. ML:0.1 0.000016149999999999996 0.48 AML other m 2021-08-15T14:13:34.77
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