Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 05-09-2021 and time 18:18:18 (Italy) in region 3 km NE Sellano (PG)

A magnitude ML 1.8 earthquake occured in region: 3 km NE Sellano (PG), on

  • 05-09-2021 16:18:18 (UTC)
  • 05-09-2021 18:18:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9130, 12.9560 at 10 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
Sellano PG 4 1079 1079
Preci PG 8 724 1803
Monte Cavallo MC 10 145 1948
Cerreto di Spoleto PG 11 1075 3023
Visso MC 11 1107 4130
Ussita MC 15 444 4574
Castelsantangelo sul Nera MC 16 281 4855
Pieve Torina MC 17 1458 6313
Norcia PG 17 4957 11270
Trevi PG 17 8469 19739
Vallo di Nera PG 18 364 20103
Fiordimonte MC 18 202 20305
Serravalle di Chienti MC 18 1070 21375
Campello sul Clitunno PG 18 2442 23817
Pievebovigliana MC 20 866 24683

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Ancona (100861 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 1.8 2021-09-05
16:18:18		 42.9128 12.9565 10 2022-03-30
13:04:05		 Bollettino Sismico Italiano INGV 95423071
Reviewed
Rev100 		ML 1.9 2021-09-05
16:18:18		 42.9143 12.96 10 2021-09-05
16:24:09		 Sala Sismica INGV-Roma 95079371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-05 16:18:18 ± 0.03
Latitude 42.9128 ± 0.0018
Longitude 12.9565 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95423071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 193
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 66
Circular confidence region, given by single value of horizontal uncertainty (meter) 190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 70
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) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.74914
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 95423071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-14 13:23:58

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 95079371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-05 16:24:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATSC.EHE. 2021-09-05T16:18:38.02 0.6 undecidable manual S 339 60.7947 50 0.35 44
IV.SSFR.HHN. 2021-09-05T16:18:37.86 0.6 undecidable manual S 346 59.7957 50 0.46 43
IV.CING.HHZ. 2021-09-05T16:18:36.42 0.3 undecidable manual S 21 54.9006 50 0.33 67
IV.MURB.HHZ. 2021-09-05T16:18:35.78 0.3 undecidable manual S 318 52.3032 50 0.38 66
IV.EL6.EHZ. 2021-09-05T16:18:34.31 0.6 undecidable manual S 14 47.7189 50 0.13 47
IV.RM33.EHZ. 2021-09-05T16:18:34.66 0.3 undecidable manual S 155 49.5171 50 0 72
IV.SAP2.EHE. 2021-09-05T16:18:33.05 0.6 undecidable manual S 60 41.3253 50 0.58 42
IV.CESX.HHZ. 2021-09-05T16:18:33.51 0.3 undecidable manual S 222 45.2214 50 -0.01 72
IV.SMA1.EHZ. 2021-09-05T16:18:33.31 0.3 undecidable manual S 135 43.9227 50 0.13 71
IV.ATCC.EHZ. 2021-09-05T16:18:32.21 0.3 undecidable manual S 320 39.627 50 0.18 71
IV.NARO.HHZ. 2021-09-05T16:18:32.80 0.3 undecidable manual P 339 83.1501 50 -0.31 63
IV.MF5.EHZ. 2021-09-05T16:18:32.70 0.6 undecidable manual S 78 41.7249 50 0.12 47
IV.MPAG.EHZ. 2021-09-05T16:18:32.67 0.3 undecidable manual P 349 81.0522 50 -0.11 66
IV.T1299.HNN. 2021-09-05T16:18:32.67 0.6 undecidable manual S 139 40.7259 50 0.35 45
IV.ARRO.EHZ. 2021-09-05T16:18:32.51 0.3 undecidable manual S 203 40.1265 50 0.35 68
IV.COR1.EHZ. 2021-09-05T16:18:32.51 0.3 undecidable manual P 3 79.8645 50 -0.08 67
IV.GUMA.HHZ. 2021-09-05T16:18:31.04 0.1 undecidable manual S 61 34.9428 50 0.26 93
IV.MTRA.EHZ. 2021-09-05T16:18:31.85 0.3 undecidable manual S 116 39.7269 50 -0.21 70
IV.ATPI.EHZ. 2021-09-05T16:18:31.59 0.1 undecidable manual P 323 74.6697 50 -0.2 88
IV.LNSS.HHZ. 2021-09-05T16:18:30.54 0.6 undecidable manual S 169 35.0427 50 -0.26 47
IV.ATVO.HHZ. 2021-09-05T16:18:30.88 0.3 undecidable manual P 320 68.4759 50 0.04 69
IV.ARVD.HHZ. 2021-09-05T16:18:30.18 0.1 undecidable manual P 359 64.9905 50 -0.12 91
IV.MOMA.HHZ. 2021-09-05T16:18:30.73 0.3 undecidable manual S 249 33.6441 50 0.3 70
IV.MMUR.HNZ. 2021-09-05T16:18:29.57 0.6 undecidable manual P 3 58.7967 50 0.22 45
IV.TERO.HHZ. 2021-09-05T16:18:29.70 0.3 undecidable manual P 121 61.7937 50 -0.11 69
IV.SSFR.HHN. 2021-09-05T16:18:29.38 0.1 undecidable manual P 346 59.7957 50 -0.12 92
IV.PF6.EHN. 2021-09-05T16:18:29.41 0.6 undecidable manual S 38 31.5462 50 -0.46 45
IV.ATSC.EHE. 2021-09-05T16:18:29.46 0.1 undecidable manual P 339 60.7947 50 -0.19 90
IV.ATFO.HHZ. 2021-09-05T16:18:29.37 0.3 undecidable manual P 328 59.1963 50 -0.04 70
IV.MMO1.EHZ. 2021-09-05T16:18:29.09 0.3 undecidable manual S 93 30.1476 50 -0.4 69
IV.MURB.HHZ. 2021-09-05T16:18:28.45 0.3 undecidable manual P 318 52.3032 50 0.1 70
IV.SEF1.HNZ. 2021-09-05T16:18:28.03 0.3 undecidable manual S 358 25.9518 111 -0.3 70
IV.ASSB.HHZ. 2021-09-05T16:18:28.64 0.3 undecidable manual S 301 28.1496 50 -0.32 70
IV.CING.HHZ. 2021-09-05T16:18:28.63 0.3 undecidable manual P 21 54.9006 50 -0.11 70
IV.CSP1.EHZ. 2021-09-05T16:18:28.63 0.3 undecidable manual S 45 28.2495 50 -0.37 69
IV.CESX.HHZ. 2021-09-05T16:18:27.01 0.3 undecidable manual P 222 45.2214 50 -0.25 69
IV.SMA1.EHZ. 2021-09-05T16:18:27.25 0.3 undecidable manual P 135 43.9227 50 0.19 70
IV.EL6.EHZ. 2021-09-05T16:18:27.59 0.1 positive manual P 14 47.7189 50 -0.05 95
IV.MML1.EHZ. 2021-09-05T16:18:27.02 0.3 undecidable manual S 3 22.2555 114 -0.13 73
IV.MF5.EHZ. 2021-09-05T16:18:27.07 0.1 positive manual P 78 41.7249 50 0.36 90
IV.RM33.EHZ. 2021-09-05T16:18:27.64 0.3 undecidable manual P 155 49.5171 50 -0.27 68
IV.GAVE.EHZ. 2021-09-05T16:18:27.94 0.3 undecidable manual S 192 24.9528 111 -0.07 74
IV.MTRA.EHZ. 2021-09-05T16:18:26.21 0.3 undecidable manual P 116 39.7269 50 -0.2 70
IV.ARRO.EHZ. 2021-09-05T16:18:26.39 0.3 undecidable manual P 203 40.1265 50 -0.08 72
IV.SAP2.EHE. 2021-09-05T16:18:26.99 0.1 undecidable manual P 60 41.3253 50 0.34 91
IV.MC2.EHZ. 2021-09-05T16:18:26.15 0.3 undecidable manual S 90 18.87 117 0.06 75
IV.ATCC.EHZ. 2021-09-05T16:18:26.46 0.3 undecidable manual P 320 39.627 50 0.06 72
IV.T1299.HNN. 2021-09-05T16:18:26.57 0.1 undecidable manual P 139 40.7259 50 0.01 97
IV.NRCA.HNZ. 2021-09-05T16:18:25.01 0.3 undecidable manual S 124 15.5733 122 -0.07 75
IV.MOMA.HHZ. 2021-09-05T16:18:25.52 0.3 positive manual P 249 33.6441 50 0.04 73
IV.LNSS.HHZ. 2021-09-05T16:18:25.58 0.1 positive manual P 169 35.0427 50 -0.11 96
IT.GNU.HGE. 2021-09-05T16:18:25.20 0.1 undecidable manual P 249 33.6441 50 -0.28 93
IV.FDMO.HHZ. 2021-09-05T16:18:25.42 0.3 undecidable manual S 38 17.3715 119 -0.19 73
IV.GUMA.HHZ. 2021-09-05T16:18:25.78 0.1 undecidable manual P 61 34.9428 50 0.11 96
IV.MMO1.EHZ. 2021-09-05T16:18:24.74 0.3 undecidable manual P 93 30.1476 50 -0.19 72
IV.GAVE.EHZ. 2021-09-05T16:18:24.17 0.1 positive manual P 192 24.9528 111 0.09 98
IV.SEF1.HNZ. 2021-09-05T16:18:24.03 0.3 undecidable manual P 358 25.9518 111 -0.23 72
IV.ASSB.HHZ. 2021-09-05T16:18:24.46 0.3 undecidable manual P 301 28.1496 50 -0.16 72
IV.PF6.EHN. 2021-09-05T16:18:24.92 0.1 undecidable manual P 38 31.5462 50 -0.23 95
IV.CSP1.EHZ. 2021-09-05T16:18:24.54 0.1 positive manual P 45 28.2495 50 -0.11 97
IV.MML1.EHZ. 2021-09-05T16:18:23.57 0.3 undecidable manual P 3 22.2555 114 -0.01 75
IT.MTCL.HGZ. 2021-09-05T16:18:23.36 0.3 undecidable manual S 21 9.6792 135 -0.11 75
IV.FEMA.HNZ. 2021-09-05T16:18:23.29 0.3 undecidable manual S 54 9.3795 136 -0.11 76
IV.MC2.EHZ. 2021-09-05T16:18:23.06 0.3 undecidable manual P 90 18.87 117 0.09 75
IV.CESI.HHZ. 2021-09-05T16:18:23.99 0.3 undecidable manual S 338 11.0778 132 0.16 74
IV.FDMO.HHZ. 2021-09-05T16:18:22.77 0.1 undecidable manual P 38 17.3715 119 0.08 100
IV.CESI.HHZ. 2021-09-05T16:18:22.02 0.1 negative manual P 338 11.0778 132 0.36 95
IV.NRCA.HNZ. 2021-09-05T16:18:22.50 0.1 undecidable manual P 124 15.5733 122 0.12 99
IV.FEMA.HNZ. 2021-09-05T16:18:21.70 0.1 undecidable manual P 54 9.3795 136 0.28 97
IT.MTCL.HGZ. 2021-09-05T16:18:21.62 0.1 undecidable manual P 21 9.6792 135 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:2.1 0.0016 0.12 AML other m 2021-09-05T16:18:24.25
IV.CESI.HHN. ML:2.4 0.0028 0.38 AML other m 2021-09-05T16:18:24.31
IV.NRCA.HHN. ML:2.3 0.0020800000000000003 0.2 AML other m 2021-09-05T16:18:25.15
IV.NRCA.HNN. ML:2.3 0.001875 0.2 AML other m 2021-09-05T16:18:25.25
IV.FDMO.HHE. ML:2.2 0.0014399999999999999 0.38 AML other m 2021-09-05T16:18:25.60
IV.NRCA.HHE. ML:2.3 0.001935 1.9 AML other m 2021-09-05T16:18:25.98
IV.NRCA.HNE. ML:2.3 0.00176 1.9 AML other m 2021-09-05T16:18:25.98
IV.FDMO.HHN. ML:2.2 0.00123 0.38 AML other m 2021-09-05T16:18:26.50
IV.MML1.HNN. ML:2.2 0.0010405 0.16 AML other m 2021-09-05T16:18:27.41
IV.MML1.EHN. ML:2.2 0.001035 0.16 AML other m 2021-09-05T16:18:27.42
IV.MML1.HNE. ML:2.3 0.0014550000000000001 0.22 AML other m 2021-09-05T16:18:27.46
IV.MML1.EHE. ML:2.3 0.0014849999999999998 0.22 AML other m 2021-09-05T16:18:27.36
IV.GAVE.EHN. ML:2.0 0.0006810000000000001 0.4 AML other m 2021-09-05T16:18:28.28
IV.ASSB.HHN. ML:1.8 0.000293 0.4 AML other m 2021-09-05T16:18:29.00
IV.CSP1.EHE. ML:2.2 0.0009379999999999999 0.2 AML other m 2021-09-05T16:18:29.10
IV.CSP1.EHN. ML:2.4 0.00125 0.2 AML other m 2021-09-05T16:18:29.30
IV.ASSB.HHE. ML:1.8 0.000306 0.56 AML other m 2021-09-05T16:18:29.95
IV.GAVE.EHE. ML:2.0 0.0005935000000000001 0.52 AML other m 2021-09-05T16:18:29.90
IV.LNSS.HHE. ML:2.0 0.00039449999999999994 0.12 AML other m 2021-09-05T16:18:30.82
IV.LNSS.HHN. ML:2.1 0.0005055000000000001 0.24 AML other m 2021-09-05T16:18:31.16
IV.MOMA.HHN. ML:1.6 0.0001705 0.16 AML other m 2021-09-05T16:18:31.48
IV.MOMA.HHE. ML:1.8 0.000254 0.2 AML other m 2021-09-05T16:18:32.46
IV.ATCC.EHN. ML:1.8 0.0001965 0.26 AML other m 2021-09-05T16:18:32.64
IV.MTRA.EHE. ML:1.8 0.0002 0.76 AML other m 2021-09-05T16:18:32.34
IV.ATCC.EHE. ML:1.7 0.00018099999999999998 0.56 AML other m 2021-09-05T16:18:32.59
IV.MTRA.EHN. ML:1.6 0.000128 1.46 AML other m 2021-09-05T16:18:32.89
IV.ARRO.EHN. ML:1.7 0.000176 0.48 AML other m 2021-09-05T16:18:33.47
IV.ARRO.EHE. ML:1.7 0.00016949999999999997 0.42 AML other m 2021-09-05T16:18:33.61
IV.MF5.EHN. ML:1.8 0.0002155 0.44 AML other m 2021-09-05T16:18:33.88
IV.MF5.EHE. ML:1.7 0.000174 0.76 AML other m 2021-09-05T16:18:34.23
IV.SMA1.EHN. ML:1.5 0.00009725 0.72 AML other m 2021-09-05T16:18:34.99
IV.CESX.HHN. ML:1.8 0.00017199999999999998 0.76 AML other m 2021-09-05T16:18:35.43
IV.RM33.EHN. ML:1.6 0.00009900000000000001 0.8 AML other m 2021-09-05T16:18:35.77
IV.SMA1.EHE. ML:1.6 0.00013450000000000002 0.3 AML other m 2021-09-05T16:18:36.49
IV.CESX.HHE. ML:1.7 0.00015099999999999998 0.46 AML other m 2021-09-05T16:18:36.41
IV.RM33.EHE. ML:1.7 0.000125 1.56 AML other m 2021-09-05T16:18:37.89
IV.CING.HHN. ML:1.4 0.0000627 1 AML other m 2021-09-05T16:18:37.34
IV.CING.HHE. ML:1.4 0.000060950000000000004 0.1 AML other m 2021-09-05T16:18:37.39
IV.ATFO.HHE. ML:1.4 0.000054850000000000005 0.9 AML other m 2021-09-05T16:18:38.65
IV.ATFO.HHN. ML:1.4 0.00005525 1.02 AML other m 2021-09-05T16:18:38.74
IV.MURB.HHE. ML:1.8 0.00016649999999999998 0.96 AML other m 2021-09-05T16:18:38.38
IV.ARVD.HHN. ML:1.5 0.00005605 1.3 AML other m 2021-09-05T16:18:39.88
IV.ARVD.HHE. ML:1.6 0.00007615 0.78 AML other m 2021-09-05T16:18:40.25
IV.MURB.HHN. ML:1.8 0.00015400000000000003 0.2 AML other m 2021-09-05T16:18:40.77
IV.ATVO.HHE. ML:1.2 0.000027450000000000003 0.66 AML other m 2021-09-05T16:18:42.62
IV.ATVO.HHN. ML:1.2 0.0000279 0.9 AML other m 2021-09-05T16:18:45.12
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