Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 12-08-2021 and time 11:30:23 (Italy) in region 6 km NW Gubbio (PG)

A magnitude ML 0.3 earthquake occured in region: 6 km NW Gubbio (PG), on

  • 12-08-2021 09:30:23 (UTC)
  • 12-08-2021 11:30:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3870, 12.5270 at 7 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 6 32216 32216
Pietralunga PG 10 2111 34327
Scheggia e Pascelupo PG 12 1393 35720
Cantiano PU 13 2245 37965
Costacciaro PG 15 1216 39181
Montone PG 16 1680 40861
Sigillo PG 18 2404 43265
Umbertide PG 18 16681 59946

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Perugia (166134 inhabitants)
50 Km N of Foligno (57155 inhabitants)
53 Km E of Arezzo (99543 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
75 Km S of Rimini (147750 inhabitants)
84 Km W of Ancona (100861 inhabitants)
87 Km S of Cesena (96758 inhabitants)
92 Km N of Terni (111501 inhabitants)
97 Km E of Siena (53903 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 2021-08-12
09:30:23		 43.387 12.5268 7 2021-08-12
09:48:00		 Sala Sismica INGV-Roma 93999851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-12 09:30:23 ± 0.15
Latitude 43.3870 ± 0.0036
Longitude 12.5268 ± 0.0037
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93999851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 368
Semi-minor axis of confidence ellipse (meter) 122
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 314
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22753
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 10
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 93999851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-12 09:48:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SL.BOJS.BHZ. 2021-08-12T09:31:59.42 3.0 undecidable manual Sg 7.61 0
IV.MTMR.HNZ. 2021-08-12T09:31:52.06 3.0 undecidable manual Sn 0.31 0
IX.RSF3.HHZ.02 2021-08-12T09:31:51.21 3.0 undecidable manual Sn -1.72 0
IX.SSB3.HHZ.02 2021-08-12T09:31:48.59 3.0 undecidable manual Sn -2.93 0
IV.MBAL.EHZ. 2021-08-12T09:31:47.34 3.0 undecidable manual Sg 3.78 0
MN.BNI.HHZ. 2021-08-12T09:31:47.55 3.0 positive manual Pg 13.6 0
IV.VAGA.HHZ. 2021-08-12T09:31:30.73 3.0 undecidable manual Sn -2.8 0
IV.PTRP.HHZ. 2021-08-12T09:31:30.95 3.0 undecidable manual Pg 6.1 0
IV.TRIV.HHZ. 2021-08-12T09:31:29.27 3.0 undecidable manual Sn -1.5 0
IV.QLNO.HHZ. 2021-08-12T09:31:27.56 3.0 undecidable manual Pg 12.4 0
IV.VVLD.HHZ. 2021-08-12T09:31:17.86 3.0 undecidable manual S -0.21 0
IV.MTMR.HNZ. 2021-08-12T09:31:13.04 3.0 undecidable manual Pn -0.43 0
IV.VENT.EHZ. 2021-08-12T09:31:11.54 3.0 negative manual Pg 4.29 0
IT.GLNS.HNZ. 2021-08-12T09:31:10.09 3.0 undecidable manual Pg 6.84 0
SL.BOJS.BHZ. 2021-08-12T09:31:08.37 3.0 undecidable manual Pn -5.13 0
IV.TOLF.HHZ. 2021-08-12T09:31:06.66 3.0 undecidable manual S -1.41 0
IV.NDIM.HNZ. 2021-08-12T09:31:01.28 3.0 undecidable manual Pg 2.26 0
IV.VIVA.HHZ. 2021-08-12T09:30:53.20 3.0 undecidable manual Pg 0.25 0
IV.ZCCA.HHZ. 2021-08-12T09:30:52.15 3.0 undecidable manual Pg -0.68 0
IV.MNTT.EHZ. 2021-08-12T09:30:37.62 3.0 negative manual P -5.19 0
IV.NARO.HHZ. 2021-08-12T09:30:32.21 0.6 undecidable manual S 10 25.2525 105 -0.33 46
IV.MOMA.HHZ. 2021-08-12T09:30:32.56 3.0 undecidable manual Pg -2.14 0
IV.PIEI.HHZ. 2021-08-12T09:30:30.00 0.6 undecidable manual S 2 16.4724 112 0.33 47
IV.MURB.HHZ. 2021-08-12T09:30:29.30 0.6 undecidable manual S 181 13.7751 116 0.5 45
IV.ATSC.EHZ. 2021-08-12T09:30:28.97 0.6 undecidable manual S 72 13.4754 116 0.25 48
IV.NARO.HHZ. 2021-08-12T09:30:28.36 0.6 undecidable manual P 10 25.2525 105 -0.36 45
IV.ATLO.EHZ. 2021-08-12T09:30:28.63 0.6 undecidable manual S 231 12.4764 118 0.22 48
IV.ATPI.EHZ. 2021-08-12T09:30:28.62 0.6 undecidable manual S 305 12.2766 118 0.28 47
IV.PIEI.HHZ. 2021-08-12T09:30:27.22 0.6 undecidable manual P 2 16.4724 112 0.16 48
IV.ATVO.HHZ. 2021-08-12T09:30:27.44 0.6 undecidable manual S 267 9.6792 124 -0.14 49
IV.TB03.DHZ.01 2021-08-12T09:30:27.50 0.6 undecidable manual S 280 9.4794 125 -0.03 50
IV.ATBU.HNZ. 2021-08-12T09:30:27.94 0.6 undecidable manual S 10 9.9789 124 0.28 48
IV.ATLO.EHZ. 2021-08-12T09:30:26.33 0.1 undecidable manual P 231 12.4764 118 -0.01 100
IV.ATBU.HNZ. 2021-08-12T09:30:26.07 0.1 undecidable manual P 10 9.9789 124 0.17 97
IV.ATPI.EHZ. 2021-08-12T09:30:26.24 0.1 undecidable manual P 305 12.2766 118 -0.06 99
IV.ATSC.EHZ. 2021-08-12T09:30:26.47 0.1 undecidable manual P 72 13.4754 116 -0.04 99
IV.MURB.HHZ. 2021-08-12T09:30:26.62 0.6 positive manual P 181 13.7751 116 0.06 49
IV.ATFO.HHZ. 2021-08-12T09:30:25.97 0.3 undecidable manual S 122 4.2957 147 -0.26 72
IV.ATVO.HHZ. 2021-08-12T09:30:25.78 0.1 positive manual P 267 9.6792 124 -0.07 99
IV.TB03.DHZ.01 2021-08-12T09:30:25.64 0.1 undecidable manual P 280 9.4794 125 -0.19 97
IV.ATFO.HHZ. 2021-08-12T09:30:24.91 0.1 undecidable manual P 122 4.2957 147 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.1 0.000021400000000000002 0.52 AML other m 2021-08-12T09:30:27.48
IV.ATVO.HHE. ML:0.4 0.00004075 0.34 AML other m 2021-08-12T09:30:27.57
IV.PIEI.HHE. ML:0.6 0.00003655 0.22 AML other m 2021-08-12T09:30:30.54
IV.PIEI.HHN. ML:0.3 0.0000203 0.28 AML other m 2021-08-12T09:30:30.68
IV.MURB.HHE. ML:0.5 0.00003670582999999999 0.1984 AML other m 2021-08-12T09:30:29.93
IV.MURB.HHN. ML:0.6 0.000051764450000000005 0.2368 AML other m 2021-08-12T09:30:29.40
IV.NARO.HHE. ML:-0.1 0.000007198178 0.0576 AML other m 2021-08-12T09:30:32.51
IV.NARO.HHN. ML:-0.1 0.000007176649 0.384 AML other m 2021-08-12T09:30:38.87
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