Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 02-08-2021 and time 01:52:22 (Italy) in region 3 km NW Gubbio (PG)

A magnitude ML 1.7 earthquake occured in region: 3 km NW Gubbio (PG), on

  • 01-08-2021 23:52:22 (UTC)
  • 02-08-2021 01:52:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3690, 12.5460 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 3 32216 32216
Scheggia e Pascelupo PG 11 1393 33609
Pietralunga PG 12 2111 35720
Costacciaro PG 14 1216 36936
Cantiano PU 14 2245 39181
Sigillo PG 16 2404 41585
Montone PG 18 1680 43265
Umbertide PG 19 16681 59946
Fossato di Vico PG 19 2840 62786

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Perugia (166134 inhabitants)
48 Km N of Foligno (57155 inhabitants)
55 Km E of Arezzo (99543 inhabitants)
65 Km SW of Fano (60888 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
77 Km S of Rimini (147750 inhabitants)
83 Km W of Ancona (100861 inhabitants)
89 Km S of Cesena (96758 inhabitants)
90 Km N of Terni (111501 inhabitants)
98 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
Bulletin
Rev1000 		ML 1.7 2021-08-01
23:52:22		 43.3688 12.5463 9 2021-12-29
11:12:40		 Bollettino Sismico Italiano INGV 96862681
Reviewed
Rev100 		ML 1.7 2021-08-01
23:52:22		 43.3708 12.5548 6 2021-08-02
00:01:24		 Sala Sismica INGV-Roma 93537501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-01 23:52:22 ± 0.04
Latitude 43.3688 ± 0.0018
Longitude 12.5463 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96862681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
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) 27
Number of associated phases, regardless of their use for origin computation 65
Number of defining phases 65
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01799
Epicentral distance of station farthest from the epicenter (degree) 0.67629
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 41
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 93537501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-02 00:01:24

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 96862681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-22 02:06:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MC2.EHZ. 2021-08-01T23:52:36.01 0.6 undecidable manual P 134 72.6717 50 0.84 35
IV.SSP9.EHZ. 2021-08-01T23:52:36.38 0.3 undecidable manual S 304 40.4262 50 0.39 66
IV.NRCA.HHZ. 2021-08-01T23:52:35.56 0.1 undecidable manual P 142 75.0693 50 0.01 89
IV.ASSB.HHZ. 2021-08-01T23:52:35.00 0.3 undecidable manual S 166 37.3293 50 -0.16 69
IV.ARVD.HHZ. 2021-08-01T23:52:34.50 0.3 undecidable manual S 66 34.9428 50 -0.03 72
IV.MPAG.EHZ. 2021-08-01T23:52:34.00 0.1 undecidable manual S 31 33.6441 50 -0.17 93
IV.MGAB.HHZ. 2021-08-01T23:52:33.57 0.3 undecidable manual P 215 61.5939 50 0.1 67
IV.CRE.HHZ. 2021-08-01T23:52:32.54 0.3 undecidable manual P 300 55.3002 50 0.04 69
IV.BADI.EHZ. 2021-08-01T23:52:32.80 0.3 undecidable manual S 303 28.9488 107 0 73
IV.CING.HHZ. 2021-08-01T23:52:32.01 0.3 undecidable manual P 89 52.3032 50 -0.03 69
IV.NARO.HHZ. 2021-08-01T23:52:32.10 0.1 undecidable manual S 6 26.9508 108 -0.06 96
IV.FDMO.HHZ. 2021-08-01T23:52:32.56 0.3 undecidable manual P 130 57.1983 50 -0.23 66
IV.ATMC.EHZ. 2021-08-01T23:52:32.73 0.3 undecidable manual S 287 29.748 107 -0.36 68
IV.COR1.HNZ. 2021-08-01T23:52:31.86 0.3 undecidable manual P 51 46.7199 50 0.68 59
IV.CAFI.HHZ. 2021-08-01T23:52:31.27 0.1 undecidable manual P 265 47.0196 50 0.06 93
IV.CESI.HHZ. 2021-08-01T23:52:31.61 0.1 undecidable manual P 144 49.7169 50 -0.02 93
IV.ATCC.EHZ. 2021-08-01T23:52:31.00 0.1 undecidable manual S 160 21.7671 113 0.55 87
IV.APEC.HHZ. 2021-08-01T23:52:31.10 0.1 undecidable manual S 334 23.3544 111 0.12 96
IV.FRON.EHZ. 2021-08-01T23:52:30.30 0.1 undecidable manual S 41 21.9669 112 -0.23 94
IV.PARC.HHZ. 2021-08-01T23:52:30.10 0.3 undecidable manual P 322 39.7269 50 0.01 71
IV.EL6.EHZ. 2021-08-01T23:52:30.75 0.3 undecidable manual P 95 45.0216 50 -0.16 69
IV.SSFR.HHZ. 2021-08-01T23:52:30.30 0.3 undecidable manual S 68 20.4684 114 0.26 70
IV.MML1.EHZ. 2021-08-01T23:52:30.60 0.3 undecidable manual P 129 44.5221 50 -0.23 68
IV.ASSB.HHZ. 2021-08-01T23:52:29.52 0.3 undecidable manual P 166 37.3293 50 -0.2 69
IV.PIEI.HHZ. 2021-08-01T23:52:29.90 0.1 undecidable manual S 357 18.5703 116 0.46 90
IV.ARVD.HHZ. 2021-08-01T23:52:29.12 0.1 undecidable manual P 66 34.9428 50 -0.24 92
IV.PE3.EHZ. 2021-08-01T23:52:29.84 0.3 undecidable manual P 354 36.5412 50 0.24 68
IV.FOSV.EHZ. 2021-08-01T23:52:29.70 0.1 undecidable manual S 115 19.1697 115 0.06 98
IV.SSP9.EHZ. 2021-08-01T23:52:29.59 0.6 undecidable manual P 304 40.4262 50 -0.61 41
IV.BADI.EHZ. 2021-08-01T23:52:28.30 0.3 undecidable manual P 303 28.9488 107 -0.06 72
IV.ATMC.EHZ. 2021-08-01T23:52:28.24 0.1 undecidable manual P 287 29.748 107 -0.28 92
IV.CDCA.HNZ. 2021-08-01T23:52:28.12 0.3 undecidable manual P 292 27.0507 108 0.11 72
IV.ATPC.HNZ. 2021-08-01T23:52:28.76 0.1 undecidable manual S 330 14.3745 122 0.59 87
IV.ATPI.EHZ. 2021-08-01T23:52:28.40 0.1 undecidable manual S 308 14.7741 121 0.11 97
IV.MPAG.EHZ. 2021-08-01T23:52:28.91 0.3 undecidable manual P 31 33.6441 50 -0.25 69
IV.MURB.HHZ. 2021-08-01T23:52:27.70 0.1 undecidable manual S 189 11.877 127 0.25 95
IV.ATMI.HHZ. 2021-08-01T23:52:27.10 0.1 undecidable manual P 260 22.755 112 -0.09 96
IV.ATSC.EHZ. 2021-08-01T23:52:27.90 0.1 undecidable manual S 61 12.876 125 0.17 97
IV.APEC.HHZ. 2021-08-01T23:52:27.24 0.1 undecidable manual P 334 23.3544 111 -0.07 97
IV.ATBU.EHZ. 2021-08-01T23:52:27.60 0.3 undecidable manual S 1 11.877 127 0.14 73
IV.TB02.DHZ.01 2021-08-01T23:52:27.21 0.1 undecidable manual S 271 11.0778 129 -0.02 100
IV.ATVA.EHZ. 2021-08-01T23:52:27.09 0.3 undecidable manual P 245 23.3544 111 -0.2 71
IV.NARO.HHZ. 2021-08-01T23:52:27.71 0.3 undecidable manual P 6 26.9508 108 -0.28 69
IV.ATLO.EHZ. 2021-08-01T23:52:27.78 0.1 undecidable manual S 242 12.6762 125 0.09 98
IV.ATCC.EHZ. 2021-08-01T23:52:27.14 0.1 negative manual P 160 21.7671 113 0.14 96
IV.TB03.DHZ.01 2021-08-01T23:52:27.34 0.1 undecidable manual S 288 11.5773 128 -0.03 100
IV.ATVO.HHZ. 2021-08-01T23:52:27.00 0.1 undecidable manual S 278 11.3775 128 -0.32 94
IV.FOSV.EHZ. 2021-08-01T23:52:26.43 0.1 positive manual P 115 19.1697 115 -0.1 97
IV.TB01.DHZ.01 2021-08-01T23:52:26.56 0.1 undecidable manual S 279 9.0798 135 -0.15 97
IT.UMBT.HGZ. 2021-08-01T23:52:26.69 0.1 undecidable manual P 246 17.871 117 0.39 91
IV.FRON.EHZ. 2021-08-01T23:52:26.91 0.1 positive manual P 41 21.9669 112 -0.14 96
IV.PIEI.HHZ. 2021-08-01T23:52:26.40 0.1 undecidable manual P 357 18.5703 116 -0.02 99
IV.SSFR.HHZ. 2021-08-01T23:52:26.63 0.1 undecidable manual P 68 20.4684 114 -0.13 96
IV.TB03.DHZ.01 2021-08-01T23:52:25.17 0.1 positive manual P 288 11.5773 128 -0.05 99
IV.ATSC.EHZ. 2021-08-01T23:52:25.49 0.1 positive manual P 61 12.876 125 0.06 99
IV.MURB.HHZ. 2021-08-01T23:52:25.40 0.1 positive manual P 189 11.877 127 0.12 98
IV.ATBU.EHZ. 2021-08-01T23:52:25.41 0.1 positive manual P 1 11.877 127 0.13 97
IV.ATPC.HNZ. 2021-08-01T23:52:25.76 0.1 undecidable manual P 330 14.3745 122 0.07 98
IV.ATVO.HHZ. 2021-08-01T23:52:25.13 0.1 positive manual P 278 11.3775 128 -0.06 99
IV.TB02.DHZ.01 2021-08-01T23:52:25.13 0.1 positive manual P 271 11.0778 129 -0.01 100
IV.ATPI.EHZ. 2021-08-01T23:52:25.78 0.1 positive manual P 308 14.7741 121 0.03 99
IV.ATLO.EHZ. 2021-08-01T23:52:25.45 0.1 positive manual P 242 12.6762 125 0.05 99
IV.ATFO.HHZ. 2021-08-01T23:52:24.51 0.3 undecidable manual S 97 1.998 167 -0.99 56
IV.TB01.DHZ.01 2021-08-01T23:52:24.76 0.1 positive manual P 279 9.0798 135 -0.09 99
IV.ATFO.HHZ. 2021-08-01T23:52:23.68 0.1 positive manual P 97 1.998 167 -0.46 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:1.8 0.0008465 0.44 AML other m 2021-08-01T23:52:27.44
IV.ATVO.HHE. ML:1.6 0.000568 0.64 AML other m 2021-08-01T23:52:27.38
IV.MURB.HHE. ML:2.1 0.001585 1.74 AML other m 2021-08-01T23:52:28.10
IV.MURB.HNE. ML:2.1 0.0014299999999999998 0.14 AML other m 2021-08-01T23:52:28.11
IV.MURB.HHN. ML:2.3 0.00262 0.28 AML other m 2021-08-01T23:52:28.19
IV.MURB.HNN. ML:2.3 0.0022949999999999997 0.28 AML other m 2021-08-01T23:52:28.19
IV.ATPI.EHE. ML:1.5 0.00035150000000000003 0.34 AML other m 2021-08-01T23:52:28.70
IV.ATPI.EHN. ML:1.6 0.000356 1.12 AML other m 2021-08-01T23:52:29.67
IV.PIEI.HHN. ML:1.8 0.000526 0.22 AML other m 2021-08-01T23:52:30.21
IV.PIEI.HHE. ML:1.8 0.0005520000000000001 0.26 AML other m 2021-08-01T23:52:30.32
IV.SSFR.HNN. ML:2.1 0.000879 0.22 AML other m 2021-08-01T23:52:30.54
IV.FRON.EHE. ML:1.7 0.00035099999999999997 0.12 AML other m 2021-08-01T23:52:30.55
IV.SSFR.HHN. ML:1.9 0.0006274999999999999 0.2 AML other m 2021-08-01T23:52:30.55
IV.SSFR.HHE. ML:1.8 0.000532 1.84 AML other m 2021-08-01T23:52:30.03
IV.ATCC.EHE. ML:1.8 0.00041099999999999996 0.12 AML other m 2021-08-01T23:52:31.39
IV.FRON.EHN. ML:1.9 0.0004935 0.28 AML other m 2021-08-01T23:52:31.32
IV.SSFR.HNE. ML:2.0 0.0007905 0.14 AML other m 2021-08-01T23:52:31.87
IV.APEC.HHE. ML:1.7 0.00029600000000000004 1.84 AML other m 2021-08-01T23:52:31.92
IV.ATMI.HHE. ML:1.3 0.00014350000000000002 0.42 AML other m 2021-08-01T23:52:32.22
IV.ATCC.EHN. ML:1.7 0.00032250000000000003 1 AML other m 2021-08-01T23:52:32.03
IV.APEC.HHN. ML:1.4 0.00016949999999999997 0.4 AML other m 2021-08-01T23:52:32.37
IV.NARO.HHE. ML:1.4 0.000136 0.18 AML other m 2021-08-01T23:52:33.02
IV.BADI.EHE. ML:2.2 0.0008990000000000001 0.16 AML other m 2021-08-01T23:52:33.22
IV.BADI.EHN. ML:2.1 0.000648 0.18 AML other m 2021-08-01T23:52:33.14
IV.NARO.HHN. ML:1.3 0.00010205 1.74 AML other m 2021-08-01T23:52:33.04
IV.ASSB.HHE. ML:1.7 0.000187 0.16 AML other m 2021-08-01T23:52:35.81
IV.ASSB.HHN. ML:1.7 0.00019600000000000002 0.14 AML other m 2021-08-01T23:52:35.81
IV.ATMI.HHN. ML:1.4 0.00016700000000000002 1.48 AML other m 2021-08-01T23:52:36.15
IV.MML1.EHE. ML:1.4 0.00007024999999999999 0.24 AML other m 2021-08-01T23:52:38.29
IV.MML1.EHN. ML:1.4 0.00007895 0.44 AML other m 2021-08-01T23:52:38.88
IV.CING.HHN. ML:1.5 0.0000849 0.16 AML other m 2021-08-01T23:52:40.15
IV.CING.HHE. ML:1.5 0.00007680000000000001 0.52 AML other m 2021-08-01T23:52:42.06
IV.MGAB.HHE. ML:1.6 0.00008115 0.26 AML other m 2021-08-01T23:52:45.35
IV.MGAB.HHN. ML:1.7 0.00010339999999999999 0.94 AML other m 2021-08-01T23:52:46.15
IV.ATFO.HHN. ML:0.0 0.009375 0.46 AML other m 2021-08-01T23:52:24.79
IV.ATFO.HHE. ML:0.0 0.00789 0.34 AML other m 2021-08-01T23:52:25.04
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