Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-10-2021 and time 14:32:01 (Italy) in region 3 km W Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 3 km W Norcia (PG), on

  • 01-10-2021 12:32:01 (UTC)
  • 01-10-2021 14:32:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7850, 13.0620 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
Norcia PG 3 4957 4957
Cascia PG 8 3217 8174
Preci PG 11 724 8898
Cerreto di Spoleto PG 12 1075 9973
Poggiodomo PG 13 117 10090
Castelsantangelo sul Nera MC 14 281 10371
Sellano PG 16 1079 11450
Vallo di Nera PG 16 364 11814
Visso MC 17 1107 12921
Monteleone di Spoleto PG 17 599 13520
Accumoli RI 18 667 14187
Ussita MC 19 444 14631
Sant'Anatolia di Narco PG 19 564 15195
Arquata del Tronto AP 19 1178 16373

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
100 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 1.9 2021-10-01
12:32:01		 42.7847 13.0617 10 2022-03-30
13:04:20		 Bollettino Sismico Italiano INGV 98094251
Reviewed
Rev100 		ML 1.9 2021-10-01
12:32:01		 42.7895 13.0585 11 2021-10-01
12:38:32		 Sala Sismica INGV-Roma 96100681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-01 12:32:01 ± 0.05
Latitude 42.7847 ± 0.0018
Longitude 13.0617 ± 0.0037
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 98094251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 311
Semi-minor axis of confidence ellipse (meter) 127
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
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) 42
Number of associated phases, regardless of their use for origin computation 68
Number of defining phases 60
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.87234
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 76
Type of magnitude ML
Reference to an origin 96100681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-01 12:38:32

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 78
Type of magnitude ML
Reference to an origin 98094251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-03 13:42:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT17.EHZ. 2021-10-01T12:33:04.96 3.0 undecidable manual Sg 3.8 0
IV.IMOL.HNZ. 2021-10-01T12:32:56.71 3.0 undecidable manual Sn 0.07 0
IV.CRE.HHZ. 2021-10-01T12:32:41.21 3.0 undecidable manual S 1.14 0
IV.ATMI.HHZ. 2021-10-01T12:32:25.80 3.0 undecidable manual S -4.05 0
IV.MURB.HHZ. 2021-10-01T12:32:24.27 3.0 undecidable manual S 0.38 0
IV.CING.HHZ. 2021-10-01T12:32:22.54 0.3 undecidable manual S 9 66.4779 50 0.64 59
TV.SF04.EHZ. 2021-10-01T12:32:22.84 3.0 positive manual P 1.51 0
IV.FIAM.HHZ. 2021-10-01T12:32:20.05 0.3 undecidable manual S 175 57.498 50 0.54 63
IV.EL6.EHZ. 2021-10-01T12:32:20.83 0.3 undecidable manual S 3 60.495 50 0.51 63
IV.ATCC.EHZ. 2021-10-01T12:32:19.80 0.3 undecidable manual S 323 56.0994 50 0.67 60
IV.SNTG.HHZ. 2021-10-01T12:32:18.42 0.3 undecidable manual S 349 53.1024 50 0.08 70
IV.MPAG.EHZ. 2021-10-01T12:32:17.64 0.6 undecidable manual P 345 96.8253 50 -0.29 41
IV.MGAB.HHZ. 2021-10-01T12:32:16.05 3.0 positive manual P 0.33 0
IV.SAP2.EHE. 2021-10-01T12:32:16.95 0.3 undecidable manual S 38 44.1225 50 1 53
IV.CESX.HHZ. 2021-10-01T12:32:15.96 0.3 undecidable manual S 243 43.3233 50 0.22 69
IV.MOMA.HHZ. 2021-10-01T12:32:15.14 0.3 undecidable manual S 273 40.0266 50 0.28 69
IV.MF5.EHZ. 2021-10-01T12:32:15.83 0.3 undecidable manual S 55 39.4272 50 1.14 50
IV.ASSB.HHZ. 2021-10-01T12:32:15.87 0.3 undecidable manual S 311 43.5231 50 0.1 71
IV.VCEL.EHZ. 2021-10-01T12:32:15.45 0.6 undecidable manual P 124 76.9674 50 0.58 40
IV.PF6.EHN. 2021-10-01T12:32:14.65 0.3 undecidable manual S 15 40.626 50 -0.37 68
IV.GUMA.HHZ. 2021-10-01T12:32:14.67 0.1 undecidable manual S 36 38.0286 50 0.36 91
IV.CAMP.HHZ. 2021-10-01T12:32:14.35 0.3 undecidable manual S 134 39.5271 50 -0.38 68
IV.MML1.EHZ. 2021-10-01T12:32:13.96 0.3 undecidable manual S 349 37.2294 50 -0.14 71
IV.CING.HHZ. 2021-10-01T12:32:13.20 0.3 undecidable manual P 9 66.4779 50 -0.05 69
IV.CSP1.EHZ. 2021-10-01T12:32:13.48 0.1 undecidable manual S 19 36.0417 50 -0.3 92
IV.EL6.EHZ. 2021-10-01T12:32:12.23 0.1 negative manual P 3 60.495 50 -0.11 92
IV.RM33.EHZ. 2021-10-01T12:32:12.84 0.3 undecidable manual S 158 33.0447 50 -0.14 72
IV.ARRO.EHZ. 2021-10-01T12:32:12.90 0.6 undecidable manual S 227 33.2445 50 -0.13 48
IV.MTRA.EHZ. 2021-10-01T12:32:11.20 0.1 undecidable manual S 96 27.4503 50 -0.29 94
IV.FIAM.HHZ. 2021-10-01T12:32:11.90 0.3 undecidable manual P 175 57.498 50 0.02 70
IV.CESI.HHZ. 2021-10-01T12:32:11.02 0.6 undecidable manual S 332 27.5502 50 -0.5 45
IV.SNTG.HHZ. 2021-10-01T12:32:11.11 0.3 undecidable manual P 349 53.1024 50 -0.09 70
IV.ATCC.EHZ. 2021-10-01T12:32:11.59 0.3 undecidable manual P 323 56.0994 50 -0.06 70
IV.MMO1.EHN. 2021-10-01T12:32:10.56 0.3 undecidable manual S 59 25.0527 111 -0.22 72
IV.SAP2.EHE. 2021-10-01T12:32:10.05 0.3 undecidable manual P 38 44.1225 50 0.23 69
IV.T1299.HNN. 2021-10-01T12:32:10.75 0.3 undecidable manual S 133 24.5532 112 0.14 73
IV.FDMO.HHZ. 2021-10-01T12:32:10.97 0.6 undecidable manual S 4 28.0497 50 -0.68 42
IV.TERO.HHZ. 2021-10-01T12:32:10.16 0.1 undecidable manual P 112 47.7189 50 -0.21 92
IV.ASSB.HHZ. 2021-10-01T12:32:09.51 0.3 undecidable manual P 311 43.5231 50 -0.2 70
IV.MNTT.EHZ. 2021-10-01T12:32:09.23 3.0 positive manual P -2.09 0
IV.CESX.HHZ. 2021-10-01T12:32:09.49 0.3 undecidable manual P 243 43.3233 50 -0.21 70
IV.PF6.EHN. 2021-10-01T12:32:09.00 0.1 negative manual P 15 40.626 50 -0.28 92
IV.LNSS.HHZ. 2021-10-01T12:32:09.13 0.3 undecidable manual S 185 20.2686 116 -0.12 74
IV.MOMA.HHZ. 2021-10-01T12:32:09.19 0.3 undecidable manual P 273 40.0266 50 0 73
IT.MTCL.HGZ. 2021-10-01T12:32:09.89 0.6 undecidable manual S 348 23.754 113 -0.47 45
IV.MF5.EHZ. 2021-10-01T12:32:09.29 0.1 positive manual P 55 39.4272 50 0.2 94
IV.GAVE.EHZ. 2021-10-01T12:32:08.64 0.6 undecidable manual S 233 17.0718 120 0.37 47
IV.ARRO.EHZ. 2021-10-01T12:32:08.03 0.1 positive manual P 227 33.2445 50 -0.1 97
IV.CAMP.HHZ. 2021-10-01T12:32:08.95 0.1 undecidable manual P 134 39.5271 50 -0.16 94
IV.MC2.EHZ. 2021-10-01T12:32:08.58 0.3 undecidable manual S 36 17.4714 119 0.18 73
IV.CSP1.EHZ. 2021-10-01T12:32:08.31 0.1 positive manual P 19 36.0417 50 -0.25 93
IV.MML1.EHZ. 2021-10-01T12:32:08.46 0.1 negative manual P 349 37.2294 50 -0.28 92
IV.FEMA.HNE. 2021-10-01T12:32:08.94 0.1 undecidable manual S 357 19.6692 117 -0.14 98
IV.GUMA.HHZ. 2021-10-01T12:32:08.96 0.1 positive manual P 36 38.0286 50 0.09 96
IV.SMA1.EHZ. 2021-10-01T12:32:07.32 0.1 negative manual P 127 28.1496 50 -0.03 99
IV.MTRA.EHZ. 2021-10-01T12:32:07.02 0.1 positive manual P 96 27.4503 50 -0.22 95
IV.CESI.HHZ. 2021-10-01T12:32:07.10 0.1 negative manual P 332 27.5502 50 -0.16 96
IV.RM33.EHZ. 2021-10-01T12:32:07.86 0.1 negative manual P 158 33.0447 50 -0.25 94
IV.FDMO.HHZ. 2021-10-01T12:32:07.12 0.1 undecidable manual P 4 28.0497 50 -0.21 95
IT.MTCL.HGZ. 2021-10-01T12:32:06.44 0.1 undecidable manual P 348 23.754 113 -0.15 97
IV.MMO1.EHN. 2021-10-01T12:32:06.61 0.1 undecidable manual P 59 25.0527 111 -0.22 96
IV.T1299.HNN. 2021-10-01T12:32:06.79 0.1 undecidable manual P 133 24.5532 112 0.05 99
IV.LNSS.HHZ. 2021-10-01T12:32:06.06 0.1 positive manual P 185 20.2686 116 0.11 99
IV.GAVE.EHZ. 2021-10-01T12:32:05.61 0.1 positive manual P 233 17.0718 120 0.22 97
IV.MC2.EHZ. 2021-10-01T12:32:05.65 0.1 positive manual P 36 17.4714 119 0.19 97
IV.NRCA.HNZ. 2021-10-01T12:32:05.72 0.3 undecidable manual S 38 6.8931 145 0.11 76
IV.FEMA.HNE. 2021-10-01T12:32:05.90 0.1 undecidable manual P 357 19.6692 117 0.05 100
IV.NRCA.HNZ. 2021-10-01T12:32:04.14 0.1 positive manual P 38 6.8931 145 0.29 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.5 0.0051134305 0.1408 AML other m 2021-10-01T12:32:05.88
IV.NRCA.HNE. ML:3.0 0.01593659 0.0896 AML other m 2021-10-01T12:32:05.92
IV.NRCA.HHE. ML:3.0 0.016883324999999998 0.0768 AML other m 2021-10-01T12:32:05.92
IV.NRCA.HNN. ML:2.4 0.0043658015 0.1088 AML other m 2021-10-01T12:32:06.64
IV.GAVE.HNN. ML:1.7 0.0004248079 1.7504 AML other m 2021-10-01T12:32:09.09
IV.GAVE.EHN. ML:2.2 0.0013284149999999999 0.224 AML other m 2021-10-01T12:32:09.09
IV.LNSS.HNN. ML:2.0 0.0007603489 0.192 AML other m 2021-10-01T12:32:09.64
IV.LNSS.HHN. ML:2.0 0.00083853775 0.1856 AML other m 2021-10-01T12:32:09.63
IV.GAVE.HNE. ML:2.3 0.00165 0.14 AML other m 2021-10-01T12:32:09.56
IV.GAVE.EHE. ML:2.3 0.001565 0.14 AML other m 2021-10-01T12:32:09.56
IV.LNSS.HHE. ML:2.1 0.0009713401500000001 0.1408 AML other m 2021-10-01T12:32:09.89
IV.LNSS.HNE. ML:2.1 0.00089210155 0.1408 AML other m 2021-10-01T12:32:09.89
IV.CESI.HHE. ML:1.7 0.000284 0.16 AML other m 2021-10-01T12:32:11.41
IV.CESI.HNE. ML:1.6 0.00023538625 0.16 AML other m 2021-10-01T12:32:11.42
IV.CESI.HHN. ML:2.2 0.000793 0.22 AML other m 2021-10-01T12:32:11.66
IV.CESI.HNN. ML:2.1 0.0007343348 0.224 AML other m 2021-10-01T12:32:11.67
IV.MTRA.HNE. ML:2.0 0.0005845000000000001 0.16 AML other m 2021-10-01T12:32:11.95
IV.MTRA.EHE. ML:2.0 0.0005935000000000001 0.16 AML other m 2021-10-01T12:32:11.95
IV.FDMO.HHN. ML:2.1 0.000704 1.88 AML other m 2021-10-01T12:32:11.01
IV.FDMO.HHE. ML:2.0 0.0005042269000000001 0.1984 AML other m 2021-10-01T12:32:12.10
IV.MTRA.EHN. ML:1.9 0.00045095615 0.16 AML other m 2021-10-01T12:32:12.13
IV.MTRA.HNN. ML:2.0 0.00048160080000000005 0.1792 AML other m 2021-10-01T12:32:12.21
IV.SMA1.EHN. ML:1.8 0.00030680615 0.2368 AML other m 2021-10-01T12:32:12.71
IV.FIAM.HNN. ML:1.9 0.00017545505 0.7296 AML other m 2021-10-01T12:32:12.92
IV.ARRO.EHE. ML:1.6 0.00019203130000000003 0.1408 AML other m 2021-10-01T12:32:13.64
IV.RM33.EHN. ML:1.9 0.000343 0.14 AML other m 2021-10-01T12:32:13.68
IV.RM33.HNN. ML:1.9 0.00034055225 0.1408 AML other m 2021-10-01T12:32:13.75
IV.CSP1.EHN. ML:2.3 0.0007526579 0.1344 AML other m 2021-10-01T12:32:14.18
IV.SNTG.HNN. ML:1.6 0.00009493058000000001 1.3088 AML other m 2021-10-01T12:32:14.28
IV.CSP1.EHE. ML:2.1 0.0005454376999999999 0.3008 AML other m 2021-10-01T12:32:14.28
IV.MML1.EHN. ML:1.6 0.0001569289 0.1792 AML other m 2021-10-01T12:32:14.69
IV.MML1.HNN. ML:1.7 0.00017307713000000002 0.192 AML other m 2021-10-01T12:32:14.69
IV.SMA1.EHE. ML:1.7 0.00028097349999999996 0.32 AML other m 2021-10-01T12:32:15.23
IV.MML1.HNE. ML:1.6 0.00014336185000000002 0.1152 AML other m 2021-10-01T12:32:15.48
IV.MML1.EHE. ML:1.6 0.00013828995 0.1216 AML other m 2021-10-01T12:32:15.48
IV.CAMP.HHE. ML:1.3 0.000072063825 0.2816 AML other m 2021-10-01T12:32:15.48
IV.CAMP.HHN. ML:1.2 0.00005313897999999999 0.4416 AML other m 2021-10-01T12:32:15.40
IV.MOMA.HHN. ML:1.8 0.00020296230000000002 0.16 AML other m 2021-10-01T12:32:15.80
IV.MOMA.HNN. ML:1.8 0.00021087072500000002 0.1856 AML other m 2021-10-01T12:32:15.81
IV.MOMA.HNE. ML:2.1 0.00043149999999999997 1.8 AML other m 2021-10-01T12:32:15.05
IV.MOMA.HHE. ML:2.1 0.00043735975 1.8016 AML other m 2021-10-01T12:32:15.05
IV.RM33.EHE. ML:1.6 0.000194 0.14 AML other m 2021-10-01T12:32:16.16
IV.RM33.HNE. ML:1.6 0.00018346115 0.1472 AML other m 2021-10-01T12:32:16.16
IV.ASSB.HHE. ML:1.8 0.000196657 0.2816 AML other m 2021-10-01T12:32:16.23
IV.MF5.EHN. ML:1.4 0.00009323414499999999 0.256 AML other m 2021-10-01T12:32:16.30
IV.ARRO.EHN. ML:1.6 0.000182 0.16 AML other m 2021-10-01T12:32:16.47
IV.MGAB.HNE. ML:2.0 0.000137034515 0.8 AML other m 2021-10-01T12:32:16.55
IV.TERO.HHN. ML:1.8 0.0001865 0.08 AML other m 2021-10-01T12:32:16.95
IV.SNTG.HNE. ML:1.7 0.00010860420500000001 1.4112 AML other m 2021-10-01T12:32:16.27
IV.GUMA.HHN. ML:2.1 0.00043362595 0.2432 AML other m 2021-10-01T12:32:17.58
IV.ASSB.HHN. ML:1.9 0.0002495 0.18 AML other m 2021-10-01T12:32:17.61
IV.TERO.HNN. ML:1.8 0.00019517904999999999 0.0896 AML other m 2021-10-01T12:32:17.90
IV.GUMA.HNE. ML:2.1 0.00046589159999999995 0.4608 AML other m 2021-10-01T12:32:17.00
IV.TERO.HHE. ML:1.7 0.00014641705 0.0768 AML other m 2021-10-01T12:32:18.07
IV.TERO.HNE. ML:1.8 0.00018314295 0.1344 AML other m 2021-10-01T12:32:18.12
IV.SNTG.HHE. ML:1.4 0.00005725472 0.1024 AML other m 2021-10-01T12:32:18.80
IV.CESX.HHE. ML:1.6 0.00010806692999999999 0.3392 AML other m 2021-10-01T12:32:19.18
IV.GUMA.HHE. ML:2.1 0.00045099999999999996 1.48 AML other m 2021-10-01T12:32:19.15
IV.CESX.HHN. ML:1.5 0.00010001913 0.1216 AML other m 2021-10-01T12:32:19.42
IV.MF5.EHE. ML:1.5 0.000105470945 0.3392 AML other m 2021-10-01T12:32:20.47
IV.SNTG.HHN. ML:1.5 0.00007433356499999999 0.1408 AML other m 2021-10-01T12:32:20.45
IV.EL6.EHN. ML:2.0 0.00020288965 0.1984 AML other m 2021-10-01T12:32:21.48
IV.FIAM.HHE. ML:1.4 0.000052900000000000005 0.38 AML other m 2021-10-01T12:32:21.42
IV.GUMA.HNN. ML:1.9 0.0003029104 1.52 AML other m 2021-10-01T12:32:21.90
IV.EL6.EHE. ML:1.9 0.0001737356 0.16 AML other m 2021-10-01T12:32:22.49
IV.FIAM.HNE. ML:3.1 0.0025575339999999998 0.5024 AML other m 2021-10-01T12:32:22.31
IV.FIAM.HHN. ML:1.4 0.00006115 0.18 AML other m 2021-10-01T12:32:22.59
IV.ATCC.EHE. ML:1.7 0.0001196 0.3 AML other m 2021-10-01T12:32:23.63
IV.CING.HHE. ML:1.5 0.000059887839999999995 1.6992 AML other m 2021-10-01T12:32:23.87
IV.CING.HHN. ML:1.5 0.00006165 1 AML other m 2021-10-01T12:32:23.93
IV.ATCC.EHN. ML:1.6 0.00009429999999999999 1.66 AML other m 2021-10-01T12:32:25.03
IV.VCEL.EHN. ML:1.6 0.00006175334500000001 0.1408 AML other m 2021-10-01T12:32:27.37
IV.CING.HNE. ML:3.4 0.0047991525 0.9472 AML other m 2021-10-01T12:32:30.54
IV.MGAB.HHN. ML:1.8 0.00009604999999999999 0.26 AML other m 2021-10-01T12:32:30.61
IV.MGAB.HHE. ML:1.6 0.00006204999999999999 0.24 AML other m 2021-10-01T12:32:31.41
IV.VCEL.EHE. ML:1.8 0.000087556855 1.936 AML other m 2021-10-01T12:32:32.99
IV.CING.HNN. ML:3.4 0.0050907175 0.6784 AML other m 2021-10-01T12:32:34.70
IV.MGAB.HNN. ML:2.2 0.00021040434999999998 0.768 AML other m 2021-10-01T12:32:48.60
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