Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 09-10-2023 and time 20:27:02 (Italy) in region 3 km E Norcia (PG)

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

  • 09-10-2023 18:27:02 (UTC)
  • 09-10-2023 20:27:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8000, 13.1330 at 10 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
Norcia PG 3 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Preci PG 12 724 5962
Cascia PG 13 3217 9179
Arquata del Tronto AP 14 1178 10357
Accumoli RI 15 667 11024
Visso MC 15 1107 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 19 117 14290
Montemonaco AP 19 604 14894
Sellano PG 20 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km W of Pescara (121014 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km NW of Chieti (51815 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 1.7 2023-10-09
18:27:02		 42.8003 13.1332 10 2023-10-09
18:48:24		 Sala Sismica INGV-Roma 121939611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-09 18:27:02 ± 0.04
Latitude 42.8003 ± 0.0018
Longitude 13.1332 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121939611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 268
Semi-minor axis of confidence ellipse (meter) 129
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) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
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) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.57647
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 121939611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-09 18:48:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HHZ. 2023-10-09T18:27:23.04 0.6 undecidable manual S 4 63.9915 50 0.61 39
IV.ATCC.EHZ. 2023-10-09T18:27:21.49 0.6 undecidable manual S 317 58.497 50 0.52 41
IV.FIAM.HHZ. 2023-10-09T18:27:21.38 0.6 undecidable manual S 181 59.0964 50 0.27 44
IV.SNTG.HNE. 2023-10-09T18:27:19.83 0.3 undecidable manual S 343 52.8027 50 0.38 64
IV.GIGS.HHZ. 2023-10-09T18:27:18.86 0.6 undecidable manual S 137 52.6029 50 -0.54 41
IV.ASSB.HHZ. 2023-10-09T18:27:17.68 0.6 undecidable manual S 305 47.0196 50 -0.21 45
IV.MOMA.HHZ. 2023-10-09T18:27:17.99 0.6 undecidable manual S 271 45.8208 50 0.41 43
IV.TERO.HNZ. 2023-10-09T18:27:16.82 0.3 undecidable manual S 117 43.1235 50 -0.04 70
IV.SAP2.EHE. 2023-10-09T18:27:16.38 0.6 undecidable manual S 33 39.3273 50 0.54 42
IV.PF6.EHE. 2023-10-09T18:27:15.12 0.3 undecidable manual S 8 37.7289 50 -0.31 67
IV.MF5.EHZ. 2023-10-09T18:27:15.17 0.6 undecidable manual S 52 33.744 50 0.82 38
IV.CAMP.HHZ. 2023-10-09T18:27:15.09 0.3 undecidable manual S 142 36.9297 50 -0.13 70
IV.GUMA.HHZ. 2023-10-09T18:27:14.56 0.3 undecidable manual S 29 33.4443 50 0.3 68
IV.MML1.EHZ. 2023-10-09T18:27:14.88 0.6 undecidable manual S 339 37.1295 50 -0.38 44
IV.CING.HHZ. 2023-10-09T18:27:14.17 0.3 undecidable manual P 4 63.9915 50 0.13 67
IV.RM33.EHZ. 2023-10-09T18:27:14.07 0.3 undecidable manual S 168 33.0447 50 -0.09 71
IV.ATCC.EHZ. 2023-10-09T18:27:13.13 0.3 undecidable manual P 317 58.497 50 -0.06 68
IV.CSP1.EHZ. 2023-10-09T18:27:13.70 0.3 undecidable manual S 10 32.8449 50 -0.41 66
IV.FIAM.HHZ. 2023-10-09T18:27:13.08 0.6 undecidable manual P 181 59.0964 50 -0.2 44
IV.SNTG.HNE. 2023-10-09T18:27:12.88 0.3 undecidable manual P 343 52.8027 50 0.57 61
IV.SMA1.EHZ. 2023-10-09T18:27:12.01 0.6 undecidable manual S 139 25.0527 111 0.12 48
IV.CESI.HHZ. 2023-10-09T18:27:12.99 0.3 undecidable manual S 321 29.3484 50 -0.19 70
IV.CESX.HHE. 2023-10-09T18:27:12.23 0.6 undecidable manual P 245 49.4172 50 0.44 43
IV.FDMO.HHZ. 2023-10-09T18:27:11.85 0.6 undecidable manual S 352 26.4513 110 -0.5 44
IV.GIGS.HHZ. 2023-10-09T18:27:11.93 0.3 undecidable manual P 137 52.6029 50 -0.36 65
IV.GAVE.EHZ. 2023-10-09T18:27:11.60 0.6 undecidable manual S 238 22.8549 113 0.41 45
IV.ASSB.HHZ. 2023-10-09T18:27:11.09 0.1 undecidable manual P 305 47.0196 50 -0.33 88
IT.MTCL.HGE. 2023-10-09T18:27:11.39 0.3 undecidable manual S 333 24.0537 112 -0.19 71
IV.LNSS.HHZ. 2023-10-09T18:27:11.46 0.3 undecidable manual S 199 23.1546 113 0.17 71
IV.MOMA.HHZ. 2023-10-09T18:27:11.00 0.3 undecidable manual P 271 45.8208 50 -0.24 67
IV.CAMP.HHZ. 2023-10-09T18:27:10.43 0.3 undecidable manual P 142 36.9297 50 0.55 63
IV.MTRA.HNE. 2023-10-09T18:27:10.86 0.3 undecidable manual S 103 21.9669 114 -0.05 73
IV.TERO.HNZ. 2023-10-09T18:27:10.51 0.3 undecidable manual P 117 43.1235 50 -0.32 67
IV.SAP2.EHE. 2023-10-09T18:27:10.55 0.3 undecidable manual P 33 39.3273 50 0.31 67
IV.MMO1.EHZ. 2023-10-09T18:27:09.99 0.3 undecidable manual S 55 19.1697 117 -0.04 73
IV.GUMA.HHZ. 2023-10-09T18:27:09.47 0.3 undecidable manual P 29 33.4443 50 0.14 70
IV.PF6.EHE. 2023-10-09T18:27:09.71 0.1 undecidable manual P 8 37.7289 50 -0.29 90
IV.MF5.EHZ. 2023-10-09T18:27:09.51 0.3 undecidable manual P 52 33.744 50 0.14 70
7F.SIB2.EHE. 2023-10-09T18:27:09.13 0.3 undecidable manual S 54 17.1717 119 -0.27 70
IV.CSP1.EHZ. 2023-10-09T18:27:09.06 0.1 undecidable manual P 10 32.8449 50 -0.18 93
IV.MML1.EHZ. 2023-10-09T18:27:09.70 1.0 positive manual P 339 37.1295 50 -0.2 23
IV.RM33.EHZ. 2023-10-09T18:27:08.99 0.3 undecidable manual P 168 33.0447 50 -0.27 68
IV.FDMO.HHZ. 2023-10-09T18:27:08.01 0.1 undecidable manual P 352 26.4513 110 -0.21 93
IV.CESI.HHZ. 2023-10-09T18:27:08.44 0.1 undecidable manual P 321 29.3484 50 -0.26 92
IV.MC2.EHZ. 2023-10-09T18:27:08.55 0.6 undecidable manual S 20 13.0758 126 0.31 47
7F.SIB1.EHE. 2023-10-09T18:27:08.83 0.1 undecidable manual S 47 15.2736 122 -0.02 99
IT.MTCL.HGE. 2023-10-09T18:27:07.54 0.1 undecidable manual P 333 24.0537 112 -0.23 93
IV.LNSS.HHZ. 2023-10-09T18:27:07.60 0.1 undecidable manual P 199 23.1546 113 -0.01 98
IV.FEMA.HNE. 2023-10-09T18:27:07.32 0.3 undecidable manual P 339 19.1697 117 0.44 68
IV.MTRA.HNE. 2023-10-09T18:27:07.43 0.3 undecidable manual P 103 21.9669 114 0.04 73
IV.GAVE.EHZ. 2023-10-09T18:27:07.55 0.1 undecidable manual P 238 22.8549 113 -0.01 98
IV.SMA1.EHZ. 2023-10-09T18:27:07.93 0.3 undecidable manual P 139 25.0527 111 -0.02 73
7F.SIB2.EHE. 2023-10-09T18:27:06.49 0.1 undecidable manual P 54 17.1717 119 -0.03 99
IV.MC2.EHZ. 2023-10-09T18:27:06.08 0.3 undecidable manual P 20 13.0758 126 0.23 71
7F.SIB1.EHE. 2023-10-09T18:27:06.36 0.1 undecidable manual P 47 15.2736 122 0.16 96
IV.MMO1.EHZ. 2023-10-09T18:27:06.86 0.3 undecidable manual P 55 19.1697 117 -0.02 74
IV.NRCA.HHZ. 2023-10-09T18:27:04.74 0.1 undecidable manual P 337 3.996 158 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHE. ML:2.0 0.0007840000000000001 0.2 AML other m 2023-10-09T18:27:10.87
IV.MMO1.EHN. ML:1.8 0.0005670009 0.1408 AML other m 2023-10-09T18:27:11.55
IV.LNSS.HHN. ML:2.0 0.000729 0.22 AML other m 2023-10-09T18:27:12.50
IV.GAVE.EHE. ML:2.0 0.0006124965 0.1536 AML other m 2023-10-09T18:27:12.62
IV.FDMO.HHN. ML:1.5 0.00017999999999999998 0.34 AML other m 2023-10-09T18:27:12.91
IV.GAVE.EHN. ML:1.9 0.0005179104 0.2048 AML other m 2023-10-09T18:27:13.26
IV.LNSS.HHE. ML:1.8 0.0004289909 0.128 AML other m 2023-10-09T18:27:13.11
IV.CESI.HHE. ML:1.7 0.0002611792 0.2048 AML other m 2023-10-09T18:27:14.14
IV.CESI.HHN. ML:1.7 0.00022448945000000002 0.1024 AML other m 2023-10-09T18:27:13.77
IV.CSP1.EHN. ML:1.9 0.0003542619 0.1536 AML other m 2023-10-09T18:27:15.10
IV.CSP1.EHE. ML:1.8 0.00025016284999999997 0.128 AML other m 2023-10-09T18:27:14.87
IV.FDMO.HHE. ML:1.4 0.0001340914 0.128 AML other m 2023-10-09T18:27:14.91
IV.GUMA.HHN. ML:1.9 0.0003712642 0.1536 AML other m 2023-10-09T18:27:15.78
IV.MML1.EHN. ML:1.5 0.00013003234 0.128 AML other m 2023-10-09T18:27:16.19
IV.GUMA.HHE. ML:2.0 0.0004502691 0.3968 AML other m 2023-10-09T18:27:15.97
IV.SMA1.EHE. ML:1.6 0.00022122815000000001 0.5504 AML other m 2023-10-09T18:27:18.13
IV.SMA1.EHN. ML:1.5 0.00020349434999999998 0.384 AML other m 2023-10-09T18:27:16.38
IV.MML1.EHE. ML:1.5 0.000123012665 0.1408 AML other m 2023-10-09T18:27:16.36
IV.TERO.HHN. ML:1.6 0.00011300715 0.0768 AML other m 2023-10-09T18:27:18.68
IV.TERO.HHE. ML:1.5 0.00010660635 0.064 AML other m 2023-10-09T18:27:17.91
IV.NRCA.HHE. ML:2.6 0.007836163 0.1408 AML other m 2023-10-09T18:27:06.73
IV.NRCA.HHN. ML:2.4 0.0043574419999999996 0.1024 AML other m 2023-10-09T18:27:06.67
IV.NRCA.HNE. ML:2.6 0.007418937 0.1408 AML other m 2023-10-09T18:27:06.74
IV.NRCA.HNN. ML:2.3 0.0035609549999999998 0.0896 AML other m 2023-10-09T18:27:06.71
IV.GAVE.HNE. ML:1.9 0.0005762629 0.1536 AML other m 2023-10-09T18:27:12.54
IV.GAVE.HNN. ML:1.5 0.00021066745 0.2176 AML other m 2023-10-09T18:27:13.25
IV.LNSS.HNE. ML:1.8 0.00040877375 0.1408 AML other m 2023-10-09T18:27:13.12
IV.LNSS.HNN. ML:2.0 0.00063978565 0.2176 AML other m 2023-10-09T18:27:12.51
IV.CESI.HNN. ML:1.7 0.0002471151 0.2944 AML other m 2023-10-09T18:27:14.52
IV.RM33.HNE. ML:1.3 0.000079406095 0.192 AML other m 2023-10-09T18:27:15.69
IV.RM33.HNN. ML:1.3 0.000083081115 0.7296 AML other m 2023-10-09T18:27:15.88
IV.RM33.EHE. ML:1.2 0.00007242402100000001 0.1408 AML other m 2023-10-09T18:27:18.21
IV.RM33.EHN. ML:1.3 0.00009069868 0.1408 AML other m 2023-10-09T18:27:15.60
IV.GUMA.HNE. ML:2.1 0.00049235505 0.3072 AML other m 2023-10-09T18:27:15.96
IV.MF5.EHE. ML:1.9 0.00030676135 0.5632 AML other m 2023-10-09T18:27:19.34
IV.MML1.HNE. ML:1.5 0.000129764785 0.128 AML other m 2023-10-09T18:27:16.35
IV.MML1.HNN. ML:1.6 0.0001492474 0.128 AML other m 2023-10-09T18:27:16.24
IV.CAMP.HHE. ML:1.3 0.00007867392 0.9984 AML other m 2023-10-09T18:27:24.60
IV.TERO.HNE. ML:1.4 0.000074035975 0.576 AML other m 2023-10-09T18:27:25.53
IV.TERO.HNN. ML:1.6 0.00013458055 0.4096 AML other m 2023-10-09T18:27:21.73
IV.MOMA.HNE. ML:1.7 0.0001480736 0.1664 AML other m 2023-10-09T18:27:20.14
IV.MOMA.HNN. ML:1.7 0.00014726535 0.768 AML other m 2023-10-09T18:27:10.56
IV.MOMA.HHE. ML:1.5 0.000098098535 0.128 AML other m 2023-10-09T18:27:20.05
IV.MOMA.HHN. ML:1.6 0.0001224954 0.1408 AML other m 2023-10-09T18:27:20.13
IV.ASSB.HHE. ML:1.4 0.00007375835 0.2688 AML other m 2023-10-09T18:27:19.61
IV.ASSB.HHN. ML:1.6 0.000122782215 0.6784 AML other m 2023-10-09T18:27:13.39
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