Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 16-10-2021 and time 18:41:33 (Italy) in region 9 km E Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 9 km E Norcia (PG), on

  • 16-10-2021 16:41:33 (UTC)
  • 16-10-2021 18:41:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7600, 13.1890 at 11 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 9 4957 4957
Accumoli RI 9 667 5624
Arquata del Tronto AP 9 1178 6802
Cascia PG 15 3217 10019
Montegallo AP 15 523 10542
Castelsantangelo sul Nera MC 15 281 10823
Cittareale RI 16 482 11305
Amatrice RI 17 2657 13962
Preci PG 18 724 14686
Acquasanta Terme AP 18 2916 17602
Montemonaco AP 19 604 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
45 Km E of Foligno (57155 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
99 Km S 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 2.0 2021-10-16
16:41:33		 42.7602 13.1892 11 2022-03-30
13:04:16		 Bollettino Sismico Italiano INGV 97521801
Reviewed
Rev100 		ML 2.0 2021-10-16
16:41:33		 42.7558 13.1825 10 2021-10-16
16:53:14		 Sala Sismica INGV-Roma 96653281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-16 16:41:33 ± 0.04
Latitude 42.7602 ± 0.0018
Longitude 13.1892 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97521801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 229
Semi-minor axis of confidence ellipse (meter) 148
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
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) 47
Number of associated phases, regardless of their use for origin computation 66
Number of defining phases 66
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.75903
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 37
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 73
Type of magnitude ML
Reference to an origin 97521801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-18 14:06:16

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 86
Type of magnitude ML
Reference to an origin 96653281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-16 16:53:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2021-10-16T16:41:52.17 0.6 undecidable manual S 340 58.497 50 0.45 43
IV.FIAM.HHZ. 2021-10-16T16:41:51.16 0.6 undecidable manual S 186 54.9006 50 0.39 43
IV.ASSB.HHZ. 2021-10-16T16:41:50.33 0.6 undecidable manual S 306 53.3022 50 -0.01 47
IV.CESX.HHZ. 2021-10-16T16:41:50.16 0.6 undecidable manual S 251 51.9036 50 0.19 46
IV.MOMA.HHZ. 2021-10-16T16:41:49.73 0.3 undecidable manual S 276 50.616 50 0.1 70
IV.GIGS.HHN. 2021-10-16T16:41:48.10 0.3 undecidable manual S 137 46.2204 50 -0.36 67
IV.MNTP.HNZ. 2021-10-16T16:41:48.91 0.6 undecidable manual S 28 47.619 50 0.08 47
IV.SSFR.HHZ. 2021-10-16T16:41:48.01 0.3 undecidable manual P 336 81.9513 50 0.35 62
IV.ARRO.EHZ. 2021-10-16T16:41:47.03 0.6 undecidable manual S 240 39.9267 50 0.25 46
IV.MML1.EHZ. 2021-10-16T16:41:47.59 0.3 undecidable manual S 336 43.0236 50 0 72
IV.MURB.HHZ. 2021-10-16T16:41:47.33 0.3 undecidable manual P 316 77.5668 50 0.34 63
IV.SAP2.EHZ. 2021-10-16T16:41:47.21 0.3 undecidable manual S 24 41.0256 50 0.14 70
IV.ARVD.HHZ. 2021-10-16T16:41:47.85 0.6 undecidable manual P 346 84.249 50 -0.17 43
IV.PF6.EHN. 2021-10-16T16:41:47.02 0.6 undecidable manual S 1 41.9247 50 -0.28 45
IV.GUMA.HHZ. 2021-10-16T16:41:46.08 0.3 undecidable manual S 19 35.6421 50 0.46 66
IV.VCEL.EHZ. 2021-10-16T16:41:45.60 0.1 undecidable manual P 127 66.8775 50 0.25 87
IV.CING.HHZ. 2021-10-16T16:41:45.70 0.3 undecidable manual P 0 68.2761 50 0.14 67
IV.MF5.EHZ. 2021-10-16T16:41:45.49 0.3 undecidable manual S 41 33.5442 50 0.44 67
IV.CSP1.EHZ. 2021-10-16T16:41:45.85 0.3 undecidable manual S 2 36.8298 50 -0.09 72
IV.CESI.HHZ. 2021-10-16T16:41:45.50 0.3 undecidable manual S 320 35.6421 50 -0.14 71
IV.TERO.HHZ. 2021-10-16T16:41:45.72 0.6 undecidable manual S 114 37.1295 50 -0.29 46
IV.CAMP.HHZ. 2021-10-16T16:41:44.07 0.3 undecidable manual S 144 30.6471 50 -0.23 70
IV.ATCC.EHZ. 2021-10-16T16:41:44.96 0.1 undecidable manual P 317 64.8906 50 -0.08 91
IV.SNTG.HHZ. 2021-10-16T16:41:44.40 0.3 undecidable manual P 340 58.497 50 0.35 65
IV.FDMO.HHZ. 2021-10-16T16:41:44.30 0.3 undecidable manual S 345 31.746 50 -0.29 69
IV.EL6.EHZ. 2021-10-16T16:41:44.71 0.1 undecidable manual P 354 63.5919 50 -0.12 90
IV.CESX.HHZ. 2021-10-16T16:41:43.11 0.3 undecidable manual P 251 51.9036 50 0.07 70
IV.RM33.HNZ. 2021-10-16T16:41:43.59 0.3 undecidable manual S 176 27.9498 50 0.02 74
IV.FIAM.HHZ. 2021-10-16T16:41:43.37 0.1 undecidable manual P 186 54.9006 50 -0.13 92
IT.MTCL.HGZ. 2021-10-16T16:41:43.93 0.6 undecidable manual S 329 30.1476 50 -0.24 47
IV.MOMA.HHZ. 2021-10-16T16:41:42.83 0.1 undecidable manual P 276 50.616 50 -0.01 95
IV.MNTP.HNZ. 2021-10-16T16:41:42.86 0.3 undecidable manual P 28 47.619 50 0.48 65
IV.FEMA.HNE. 2021-10-16T16:41:42.59 0.6 undecidable manual S 333 25.1526 50 -0.23 47
IV.MNTT.EHZ. 2021-10-16T16:41:42.64 0.3 undecidable manual P 44 47.0196 50 0.35 66
IV.ASSB.HHZ. 2021-10-16T16:41:42.97 0.1 undecidable manual P 306 53.3022 50 -0.28 89
IV.GAVE.EHZ. 2021-10-16T16:41:42.68 0.3 undecidable manual S 253 25.1526 50 -0.16 72
IV.PF6.EHN. 2021-10-16T16:41:41.20 0.1 negative manual P 1 41.9247 50 -0.3 91
IV.ARRO.EHZ. 2021-10-16T16:41:41.52 0.3 undecidable manual P 240 39.9267 50 0.33 68
IV.GIGS.HHN. 2021-10-16T16:41:41.75 0.1 undecidable manual P 137 46.2204 50 -0.42 88
IV.LNSS.HHZ. 2021-10-16T16:41:41.76 0.3 undecidable manual S 215 21.2676 50 -0.02 75
IV.MML1.EHZ. 2021-10-16T16:41:41.58 0.1 undecidable manual P 336 43.0236 50 -0.09 94
IV.SAP2.EHZ. 2021-10-16T16:41:41.93 0.3 undecidable manual P 24 41.0256 50 0.57 63
IV.GUMA.HHZ. 2021-10-16T16:41:40.74 0.1 undecidable manual P 19 35.6421 50 0.22 93
IV.T1299.HNN. 2021-10-16T16:41:40.64 0.3 undecidable manual S 151 15.873 124 0.43 69
IV.MMO1.EHZ. 2021-10-16T16:41:40.89 0.1 undecidable manual S 36 19.0698 119 -0.26 95
IV.CSP1.EHZ. 2021-10-16T16:41:40.53 0.1 undecidable manual P 2 36.8298 50 -0.18 94
IV.CESI.HHZ. 2021-10-16T16:41:40.35 0.1 undecidable manual P 320 35.6421 50 -0.18 94
IV.TERO.HHZ. 2021-10-16T16:41:40.48 0.1 undecidable manual P 114 37.1295 50 -0.27 92
IV.SMA1.EHZ. 2021-10-16T16:41:40.85 0.3 undecidable manual S 140 18.6702 120 -0.18 73
IV.MF5.EHZ. 2021-10-16T16:41:40.42 0.3 undecidable manual P 41 33.5442 50 0.22 70
IV.MTRA.HNZ. 2021-10-16T16:41:40.28 0.3 undecidable manual S 91 16.872 122 -0.22 72
IV.MC2.EHZ. 2021-10-16T16:41:40.50 0.3 undecidable manual S 360 16.7721 122 0.03 75
IV.FDMO.HHZ. 2021-10-16T16:41:39.64 0.1 undecidable manual P 345 31.746 50 -0.29 92
IV.RM33.HNZ. 2021-10-16T16:41:39.27 0.1 undecidable manual P 176 27.9498 50 -0.07 97
IV.CAMP.HHZ. 2021-10-16T16:41:39.62 0.3 undecidable manual P 144 30.6471 50 -0.14 72
IT.MTCL.HGZ. 2021-10-16T16:41:39.41 0.1 undecidable manual P 329 30.1476 50 -0.28 93
IV.LNSS.HHZ. 2021-10-16T16:41:38.35 0.1 undecidable manual P 215 21.2676 50 0.04 99
IV.GAVE.EHZ. 2021-10-16T16:41:38.91 0.1 undecidable manual P 253 25.1526 50 -0.01 99
IV.NRCA.HNZ. 2021-10-16T16:41:38.54 0.3 undecidable manual S 323 10.1787 136 -0.15 74
IV.FEMA.HNE. 2021-10-16T16:41:38.80 0.3 undecidable manual P 333 25.1526 50 -0.11 73
IV.MTRA.HNZ. 2021-10-16T16:41:37.54 0.1 undecidable manual P 91 16.872 122 -0.03 100
IV.MC2.EHZ. 2021-10-16T16:41:37.61 0.1 undecidable manual P 360 16.7721 122 0.06 100
IV.T1299.HNN. 2021-10-16T16:41:37.73 0.1 negative manual P 151 15.873 124 0.33 94
IV.MMO1.EHZ. 2021-10-16T16:41:37.86 0.1 undecidable manual P 36 19.0698 119 -0.09 98
IV.SMA1.EHZ. 2021-10-16T16:41:37.93 0.1 undecidable manual P 140 18.6702 120 0.05 99
IV.NRCA.HNZ. 2021-10-16T16:41:36.62 0.1 undecidable manual P 323 10.1787 136 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.4 0.00342 0.14 AML other m 2021-10-16T16:41:38.65
IV.NRCA.HNN. ML:2.4 0.0028799999999999997 0.14 AML other m 2021-10-16T16:41:38.58
IV.NRCA.HNE. ML:2.6 0.0044204865 0.128 AML other m 2021-10-16T16:41:38.64
IV.NRCA.HHE. ML:2.6 0.004655 0.14 AML other m 2021-10-16T16:41:38.64
IV.MTRA.HNE. ML:2.0 0.0008091372999999999 0.0768 AML other m 2021-10-16T16:41:40.84
IV.MTRA.EHE. ML:2.0 0.00081667455 0.0896 AML other m 2021-10-16T16:41:40.85
IV.MTRA.HNN. ML:2.0 0.0009855 0.14 AML other m 2021-10-16T16:41:40.84
IV.MTRA.EHN. ML:2.1 0.00101743085 0.1536 AML other m 2021-10-16T16:41:40.85
IV.SMA1.EHE. ML:2.2 0.00135 0.22 AML other m 2021-10-16T16:41:41.14
IV.SMA1.EHN. ML:2.1 0.0010854105000000001 0.1024 AML other m 2021-10-16T16:41:41.31
IV.LNSS.HNN. ML:2.5 0.002206756 0.128 AML other m 2021-10-16T16:41:42.51
IV.LNSS.HHN. ML:2.6 0.0024164585 0.1408 AML other m 2021-10-16T16:41:42.52
IV.LNSS.HNE. ML:2.4 0.0017999999999999997 0.12 AML other m 2021-10-16T16:41:42.59
IV.LNSS.HHE. ML:2.4 0.0019049999999999998 0.12 AML other m 2021-10-16T16:41:42.59
IV.GAVE.HNE. ML:2.2 0.00092596945 0.1664 AML other m 2021-10-16T16:41:43.02
IV.GAVE.EHE. ML:2.2 0.00094539705 0.1536 AML other m 2021-10-16T16:41:43.03
IV.GAVE.HNN. ML:1.8 0.000376303 0.0896 AML other m 2021-10-16T16:41:43.21
IV.GAVE.EHN. ML:2.3 0.0012770885000000002 0.2304 AML other m 2021-10-16T16:41:43.71
IV.CAMP.HHE. ML:1.9 0.0004031566 0.2304 AML other m 2021-10-16T16:41:44.31
IV.CAMP.HHN. ML:1.7 0.0002165 0.22 AML other m 2021-10-16T16:41:44.36
IV.RM33.HNN. ML:1.8 0.00035251705 0.064 AML other m 2021-10-16T16:41:44.74
IV.RM33.EHN. ML:1.8 0.0003539851 0.0768 AML other m 2021-10-16T16:41:44.74
IV.FDMO.HHE. ML:1.7 0.0002455 1.3 AML other m 2021-10-16T16:41:45.09
IV.RM33.EHE. ML:1.9 0.00042249904999999997 0.128 AML other m 2021-10-16T16:41:45.16
IV.RM33.HNE. ML:1.9 0.0004304217 0.128 AML other m 2021-10-16T16:41:45.16
IV.CESI.HHN. ML:2.1 0.0005035 1.6 AML other m 2021-10-16T16:41:46.93
IV.CESI.HNN. ML:2.1 0.00048955395 1.6672 AML other m 2021-10-16T16:41:46.97
IV.CSP1.EHE. ML:2.2 0.0005525867 0.256 AML other m 2021-10-16T16:41:46.15
IV.CESI.HNE. ML:1.8 0.00025889095 0.2432 AML other m 2021-10-16T16:41:46.16
IV.TERO.HHN. ML:2.3 0.00069962545 0.064 AML other m 2021-10-16T16:41:46.26
IV.TERO.HNN. ML:2.2 0.000573464 0.064 AML other m 2021-10-16T16:41:46.27
IV.FDMO.HHN. ML:1.7 0.00020670880000000003 0.1536 AML other m 2021-10-16T16:41:46.26
IV.TERO.HHE. ML:2.0 0.0004108519 0.064 AML other m 2021-10-16T16:41:46.39
IV.CESI.HHE. ML:1.8 0.0002774139 0.2176 AML other m 2021-10-16T16:41:46.28
IV.TERO.HNE. ML:2.0 0.00039765989999999995 0.064 AML other m 2021-10-16T16:41:46.46
IV.GUMA.HHE. ML:2.6 0.0016600000000000002 0.26 AML other m 2021-10-16T16:41:46.53
IV.GUMA.HNE. ML:2.7 0.0021619425 0.256 AML other m 2021-10-16T16:41:46.56
IV.GUMA.HHN. ML:2.8 0.002390282 0.2048 AML other m 2021-10-16T16:41:46.69
IV.GUMA.HNN. ML:2.7 0.0019217305 0.2432 AML other m 2021-10-16T16:41:47.37
IV.CSP1.EHN. ML:2.2 0.0005733081 0.2176 AML other m 2021-10-16T16:41:47.88
IV.ARRO.EHE. ML:1.8 0.0002115 1.22 AML other m 2021-10-16T16:41:48.09
IV.SAP2.EHN. ML:3.1 0.0044399999999999995 0.12 AML other m 2021-10-16T16:41:48.39
IV.SAP2.EHE. ML:2.4 0.0008300000000000001 0.12 AML other m 2021-10-16T16:41:48.46
IV.ARRO.EHN. ML:1.9 0.00026549999999999995 0.18 AML other m 2021-10-16T16:41:48.73
IV.MML1.EHE. ML:1.7 0.00016650435 0.1152 AML other m 2021-10-16T16:41:49.02
IV.MML1.HNN. ML:1.7 0.00016219909999999998 0.1536 AML other m 2021-10-16T16:41:49.78
IV.MML1.EHN. ML:1.7 0.00016252595 0.1536 AML other m 2021-10-16T16:41:49.79
IV.MOMA.HHE. ML:2.1 0.00032199999999999997 0.2 AML other m 2021-10-16T16:41:51.24
IV.MOMA.HNE. ML:2.2 0.00036050735 0.2304 AML other m 2021-10-16T16:41:51.14
IV.MOMA.HNN. ML:1.8 0.00017502025500000003 0.1664 AML other m 2021-10-16T16:41:51.26
IV.FIAM.HHE. ML:1.3 0.000045976065 0.2176 AML other m 2021-10-16T16:41:51.54
IV.CESX.HHE. ML:1.9 0.0001866705 0.32 AML other m 2021-10-16T16:41:51.83
IV.CESX.HHN. ML:1.8 0.00017099999999999998 0.16 AML other m 2021-10-16T16:41:51.83
IV.MOMA.HHN. ML:1.8 0.0001643976 0.1664 AML other m 2021-10-16T16:41:52.12
IV.ASSB.HHE. ML:1.8 0.00014500000000000003 0.16 AML other m 2021-10-16T16:41:52.59
IV.FIAM.HHN. ML:1.5 0.0000742 0.26 AML other m 2021-10-16T16:41:52.71
IV.SNTG.HHN. ML:1.5 0.00006857275999999999 0.128 AML other m 2021-10-16T16:41:53.61
IV.ASSB.HHN. ML:1.8 0.00014500000000000003 1.26 AML other m 2021-10-16T16:41:54.74
IV.SNTG.HHE. ML:1.5 0.00007105 0.76 AML other m 2021-10-16T16:41:54.13
IV.EL6.EHE. ML:2.0 0.0001805 0.14 AML other m 2021-10-16T16:41:55.94
IV.EL6.EHN. ML:2.0 0.000176 0.16 AML other m 2021-10-16T16:41:55.96
IV.ATCC.EHE. ML:1.7 0.00009470000000000001 0.16 AML other m 2021-10-16T16:41:56.10
IV.VCEL.EHN. ML:1.9 0.00012808622 0.1536 AML other m 2021-10-16T16:41:56.32
IV.VCEL.EHE. ML:2.0 0.00016749999999999998 0.28 AML other m 2021-10-16T16:41:57.82
IV.CING.HHE. ML:1.6 0.000073859535 0.1536 AML other m 2021-10-16T16:41:57.98
IV.CING.HHN. ML:1.6 0.000071768165 1.8976 AML other m 2021-10-16T16:41:58.95
IV.ATCC.EHN. ML:1.7 0.00009797697 0.2816 AML other m 2021-10-16T16:41:58.60
IV.SSFR.HNN. ML:2.1 0.000180092 0.2688 AML other m 2021-10-16T16:42:00.77
IV.MURB.HNE. ML:2.2 0.000228209 0.3072 AML other m 2021-10-16T16:42:01.50
IV.MURB.HHE. ML:2.2 0.0002165 0.38 AML other m 2021-10-16T16:42:01.50
IV.SSFR.HHE. ML:2.1 0.0001555 0.2 AML other m 2021-10-16T16:42:01.59
IV.ARVD.HHE. ML:1.4 0.00003151612 0.256 AML other m 2021-10-16T16:42:04.81
IV.ARVD.HHN. ML:1.5 0.00003885113 0.2816 AML other m 2021-10-16T16:42:06.55
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
Waveforms Seismic signals in miniseed + resp format Download