Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 12-10-2021 and time 17:56:10 (Italy) in region 5 km N Valfabbrica (PG)

A magnitude ML 0.9 earthquake occured in region: 5 km N Valfabbrica (PG), on

  • 12-10-2021 15:56:10 (UTC)
  • 12-10-2021 17:56:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2070, 12.6210 at 8 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
Valfabbrica PG 5 3389 3389
Gualdo Tadino PG 14 15208 18597
Assisi PG 15 28299 46896
Fossato di Vico PG 15 2840 49736
Bastia Umbra PG 17 21874 71610
Gubbio PG 17 32216 103826
Sigillo PG 17 2404 106230
Nocera Umbra PG 17 5839 112069
Costacciaro PG 19 1216 113285
Valtopina PG 20 1398 114683

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Perugia (166134 inhabitants)
29 Km N of Foligno (57155 inhabitants)
66 Km E of Arezzo (99543 inhabitants)
72 Km N of Terni (111501 inhabitants)
78 Km SW of Fano (60888 inhabitants)
82 Km SW of Pesaro (94582 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
95 Km S of Rimini (147750 inhabitants)
97 Km NE of Viterbo (67173 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 2021-10-12
15:56:10		 43.2073 12.6207 9 2021-10-12
16:09:16		 Sala Sismica INGV-Roma 96478371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-12 15:56:10 ± 0.05
Latitude 43.2073 ± 0.0027
Longitude 12.6207 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96478371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 204
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 212
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
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) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.44157
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96478371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-12 16:09:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-10-12T15:56:27.04 0.6 undecidable manual S 105 49.0176 50 0.27 45
IV.NARO.HHZ. 2021-10-12T15:56:26.11 0.6 undecidable manual S 356 44.8218 50 0.44 44
IV.PIEI.HHZ. 2021-10-12T15:56:23.75 0.6 undecidable manual S 349 37.0296 50 0.16 47
IV.FRON.EHZ. 2021-10-12T15:56:22.57 0.6 undecidable manual S 14 35.4423 50 -0.59 42
IV.MML1.EHZ. 2021-10-12T15:56:21.58 0.6 undecidable manual S 110 30.2475 106 0 49
IV.SSFR.HHZ. 2021-10-12T15:56:20.95 0.6 undecidable manual S 27 28.5492 107 -0.05 49
IV.SNTG.HNZ. 2021-10-12T15:56:20.24 0.6 undecidable manual S 78 26.3514 108 -0.05 49
IV.ATVA.EHZ. 2021-10-12T15:56:20.48 0.6 undecidable manual S 286 28.2495 107 -0.42 45
IV.TB03.DHZ. 2021-10-12T15:56:20.76 0.6 undecidable manual S 322 27.4503 107 0.14 48
IV.ATVO.HHZ. 2021-10-12T15:56:20.31 0.6 undecidable manual S 318 25.9518 108 0.16 48
IV.ATSC.EHZ. 2021-10-12T15:56:19.64 0.6 undecidable manual S 12 24.5532 109 -0.06 49
IV.TB01.DHZ. 2021-10-12T15:56:19.78 0.6 undecidable manual S 322 24.4533 109 0.14 48
IV.NARO.HHZ. 2021-10-12T15:56:19.31 0.6 undecidable manual P 356 44.8218 50 -0.02 48
IV.CSP1.EHZ. 2021-10-12T15:56:19.88 1.0 positive manual P 105 49.0176 50 -0.09 23
IV.PIEI.HHZ. 2021-10-12T15:56:18.16 0.6 negative manual P 349 37.0296 50 0.03 48
IV.ASSB.HHZ. 2021-10-12T15:56:18.01 0.6 undecidable manual S 170 18.5703 115 0.26 48
IV.ATLO.EHZ. 2021-10-12T15:56:18.75 0.6 undecidable manual S 305 20.9679 112 0.22 48
IV.MML1.EHZ. 2021-10-12T15:56:17.05 1.0 undecidable manual P 110 30.2475 106 0.09 24
IV.ATFO.HHZ. 2021-10-12T15:56:17.85 0.3 undecidable manual S 347 18.0708 115 0.24 72
IV.FRON.EHZ. 2021-10-12T15:56:17.54 1.0 undecidable manual P 14 35.4423 50 -0.34 23
IV.FOSV.EHZ. 2021-10-12T15:56:16.76 0.6 undecidable manual S 49 14.9739 120 0.13 49
IV.SSFR.HHZ. 2021-10-12T15:56:16.39 0.3 negative manual P 27 28.5492 107 -0.24 70
IV.SNTG.HNZ. 2021-10-12T15:56:16.19 0.1 undecidable manual P 78 26.3514 108 -0.03 99
IV.ATVA.EHZ. 2021-10-12T15:56:16.51 0.1 undecidable manual P 286 28.2495 107 -0.06 98
IV.TB03.DHZ. 2021-10-12T15:56:16.23 0.1 undecidable manual P 322 27.4503 107 -0.19 95
IV.ATVO.HHZ. 2021-10-12T15:56:15.98 0.1 undecidable manual P 318 25.9518 108 -0.16 96
IV.ATLO.EHZ. 2021-10-12T15:56:15.20 0.1 undecidable manual P 305 20.9679 112 0 100
IV.ATSC.EHZ. 2021-10-12T15:56:15.75 0.1 undecidable manual P 12 24.5532 109 -0.13 97
IV.TB01.DHZ. 2021-10-12T15:56:15.80 0.1 undecidable manual P 322 24.4533 109 -0.05 99
IV.TB02.DHZ. 2021-10-12T15:56:15.92 0.1 undecidable manual P 317 24.8529 109 -0.01 99
IV.ATFO.HHZ. 2021-10-12T15:56:14.92 0.3 negative manual P 347 18.0708 115 0.25 72
IV.FOSV.EHZ. 2021-10-12T15:56:14.25 0.3 negative manual P 49 14.9739 120 0.14 74
IV.ASSB.HHZ. 2021-10-12T15:56:14.82 0.6 positive manual P 170 18.5703 115 0.06 50
IV.MURB.HHZ. 2021-10-12T15:56:13.56 0.3 undecidable manual P 308 9.879 131 0.27 72
IV.ATCC.EHZ. 2021-10-12T15:56:13.53 0.6 undecidable manual S 148 2.8971 161 -0.26 49
IV.ATCC.EHZ. 2021-10-12T15:56:12.31 1.0 undecidable manual P 148 2.8971 161 -0.16 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.8 0.00005895 1.86 AML other m 2021-10-12T15:56:16.99
IV.FOSV.EHN. ML:0.7 0.000055599999999999996 0.12 AML other m 2021-10-12T15:56:17.21
IV.ASSB.HHN. ML:1.1 0.00010600000000000002 0.12 AML other m 2021-10-12T15:56:18.18
IV.ASSB.HHE. ML:1.0 0.00008340000000000001 0.12 AML other m 2021-10-12T15:56:18.16
IV.ATFO.HHN. ML:0.8 0.00004985 0.42 AML other m 2021-10-12T15:56:20.36
IV.ATFO.HHE. ML:0.8 0.00005105 0.44 AML other m 2021-10-12T15:56:21.68
IV.SSFR.HHN. ML:1.2 0.0000737 0.18 AML other m 2021-10-12T15:56:21.54
IV.SSFR.HHE. ML:1.1 0.00006850000000000001 0.98 AML other m 2021-10-12T15:56:21.16
IV.PIEI.HHN. ML:0.6 0.0000172 0.52 AML other m 2021-10-12T15:56:23.71
IV.PIEI.HHE. ML:0.9 0.000030050000000000002 0.92 AML other m 2021-10-12T15:56:24.74
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