Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 21-10-2023 and time 16:52:07 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 2.2 earthquake occured in region: 4 km E Norcia (PG), on

  • 21-10-2023 14:52:07 (UTC)
  • 21-10-2023 16:52:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7960, 13.1370 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 4 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Preci PG 12 724 5962
Cascia PG 13 3217 9179
Arquata del Tronto AP 13 1178 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Ussita MC 17 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 19 117 14290
Montemonaco AP 19 604 14894
Cittareale RI 20 482 15376
Sellano PG 20 1079 16455

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 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 SE 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)
97 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 2.2 2023-10-21
14:52:07		 42.7963 13.1367 10 2023-10-21
14:58:04		 Sala Sismica INGV-Roma 122267851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-21 14:52:07 ± 0.04
Latitude 42.7963 ± 0.0018
Longitude 13.1367 ± 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 122267851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 223
Semi-minor axis of confidence ellipse (meter) 221
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48024
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 64
Type of magnitude ML
Reference to an origin 122267851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-21 14:58:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HNZ. 2023-10-21T14:53:12.04 3.0 undecidable manual Sg 5.11 0
IV.CQUE.HHZ. 2023-10-21T14:53:10.84 3.0 undecidable manual Sg 4.14 0
IT.LRNO.HNZ. 2023-10-21T14:52:40.74 3.0 undecidable manual Pg 5.62 0
IV.MPAG.EHZ. 2023-10-21T14:52:38.38 3.0 undecidable manual S 0.36 0
IV.NARO.HHZ. 2023-10-21T14:52:38.85 3.0 undecidable manual S 0.06 0
IV.ATMI.HHZ. 2023-10-21T14:52:37.40 3.0 undecidable manual S 1.14 0
IV.PIEI.HHZ. 2023-10-21T14:52:37.44 3.0 undecidable manual S 0.1 0
IV.ARVD.HHZ. 2023-10-21T14:52:32.53 3.0 undecidable manual S -0.28 0
IV.CING.HHZ. 2023-10-21T14:52:28.29 3.0 undecidable manual S -0.23 0
IV.FIAM.HHZ. 2023-10-21T14:52:25.82 3.0 undecidable manual S -0.36 0
IV.INTR.HHZ. 2023-10-21T14:52:25.22 3.0 negative manual P -0.45 0
IV.NARO.HHZ. 2023-10-21T14:52:24.57 3.0 undecidable manual P -0.27 0
IV.MPAG.EHZ. 2023-10-21T14:52:24.59 3.0 positive manual P 0.18 0
IV.PIEI.HHZ. 2023-10-21T14:52:23.80 3.0 undecidable manual P -0.23 0
IV.FRON.EHZ. 2023-10-21T14:52:22.41 3.0 negative manual P -0.21 0
IV.ARVD.HHZ. 2023-10-21T14:52:21.20 3.0 negative manual P -0.28 0
IV.T0110.HHZ. 2023-10-21T14:52:21.27 3.0 positive manual P -0.59 0
IV.ATFO.HHZ. 2023-10-21T14:52:21.07 3.0 undecidable manual P -0.06 0
IV.FAGN.HHZ. 2023-10-21T14:52:19.83 3.0 positive manual P 0.1 0
IV.SRES.HHZ. 2023-10-21T14:52:19.24 3.0 negative manual P -2 0
IV.ATCC.EHZ. 2023-10-21T14:52:18.05 3.0 negative manual P 0.13 0
IV.CING.HHZ. 2023-10-21T14:52:18.80 3.0 negative manual P -0.27 0
IV.MURB.HHZ. 2023-10-21T14:52:18.73 3.0 undecidable manual P -1.29 0
IV.MNTT.EHZ. 2023-10-21T14:52:17.10 3.0 positive manual P 0.66 0
IV.SMA1.EHZ. 2023-10-21T14:52:17.04 0.6 undecidable manual S 139 24.5532 112 0.59 43
IV.OFFI.HHZ. 2023-10-21T14:52:17.03 3.0 positive manual P 0.63 0
IV.FIAM.HHZ. 2023-10-21T14:52:17.69 3.0 positive manual P -0.07 0
IV.SNTG.HHZ. 2023-10-21T14:52:17.02 0.3 positive manual P 343 53.3022 50 -0.02 70
IV.LNSS.HHZ. 2023-10-21T14:52:16.00 0.1 undecidable manual S 200 22.8549 114 0.07 98
IV.CESX.HHZ. 2023-10-21T14:52:16.92 3.0 negative manual P 0.83 0
IV.FDMO.HHZ. 2023-10-21T14:52:16.91 0.6 undecidable manual S 351 26.9508 50 -0.24 47
IV.GIGS.HHZ. 2023-10-21T14:52:16.33 3.0 undecidable manual P -0.63 0
IV.SAP2.EHZ. 2023-10-21T14:52:15.32 0.1 undecidable manual P 33 39.5271 50 0.41 89
IV.GAVE.EHZ. 2023-10-21T14:52:15.76 0.3 undecidable manual S 240 22.8549 114 -0.17 72
IV.TERO.HNZ. 2023-10-21T14:52:15.32 3.0 positive manual P -0.2 0
IV.MTRA.EHZ. 2023-10-21T14:52:15.33 0.3 undecidable manual S 102 21.5673 115 -0.2 72
IV.GUMA.HHZ. 2023-10-21T14:52:14.26 0.3 positive manual P 29 33.6441 50 0.25 69
IV.MMO1.EHZ. 2023-10-21T14:52:14.72 0.1 undecidable manual S 53 19.2696 118 -0.07 99
IV.FEMA.HNZ. 2023-10-21T14:52:14.94 0.1 undecidable manual S 339 19.6692 117 0.01 100
IV.CAMP.HHZ. 2023-10-21T14:52:14.22 0.1 negative manual P 142 36.4413 50 -0.22 93
IV.ASSB.HHZ. 2023-10-21T14:52:14.74 3.0 undecidable manual P -1.22 0
IV.MF5.EHZ. 2023-10-21T14:52:14.12 0.6 undecidable manual P 51 33.744 50 0.1 48
IV.CESI.HHZ. 2023-10-21T14:52:13.45 0.1 negative manual P 321 29.8479 50 0.03 98
IV.CSP1.EHZ. 2023-10-21T14:52:13.86 0.1 positive manual P 10 33.2445 50 -0.08 96
IV.RM33.EHZ. 2023-10-21T14:52:13.63 0.3 negative manual P 169 32.5452 50 -0.2 70
IT.MTCL.HGZ. 2023-10-21T14:52:12.52 0.1 positive manual P 333 24.5532 112 -0.06 98
IV.LNSS.HHZ. 2023-10-21T14:52:12.30 0.1 positive manual P 200 22.8549 114 0.04 99
IV.GAVE.EHZ. 2023-10-21T14:52:12.41 0.1 positive manual P 240 22.8549 114 0.14 97
IV.FDMO.HHZ. 2023-10-21T14:52:12.87 0.1 positive manual P 351 26.9508 50 -0.1 97
IV.SMA1.EHZ. 2023-10-21T14:52:12.45 0.1 negative manual P 139 24.5532 112 -0.12 97
IV.MTRA.EHZ. 2023-10-21T14:52:11.98 0.1 undecidable manual P 102 21.5673 115 -0.06 99
IV.MMO1.EHZ. 2023-10-21T14:52:11.60 0.1 positive manual P 53 19.2696 118 0 100
IV.FEMA.HNZ. 2023-10-21T14:52:11.85 0.6 positive manual P 339 19.6692 117 0.16 48
IV.NRCA.HHZ. 2023-10-21T14:52:10.91 0.1 undecidable manual S 336 4.4955 156 -0.16 99
IV.NRCA.HHZ. 2023-10-21T14:52:09.67 0.1 undecidable manual P 336 4.4955 156 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHN. ML:2.4 0.001745 0.72 AML other m 2023-10-21T14:52:14.58
IV.FEMA.HNE. ML:2.5 0.0023650000000000003 0.26 AML other m 2023-10-21T14:52:15.28
IV.MMO1.EHE. ML:2.1 0.0009425 0.54 AML other m 2023-10-21T14:52:15.07
IV.FEMA.HNN. ML:2.3 0.001535 1.22 AML other m 2023-10-21T14:52:15.63
IV.MTRA.HNE. ML:2.4 0.001745 1.54 AML other m 2023-10-21T14:52:16.10
IV.MTRA.EHE. ML:2.4 0.001795 1.54 AML other m 2023-10-21T14:52:16.11
IV.MTRA.EHN. ML:2.3 0.00152 0.24 AML other m 2023-10-21T14:52:16.09
IV.MTRA.HNN. ML:2.3 0.001495 0.24 AML other m 2023-10-21T14:52:16.09
IV.GAVE.EHE. ML:2.6 0.002775 1.52 AML other m 2023-10-21T14:52:16.15
IV.FDMO.HHN. ML:2.2 0.0009845000000000001 1.24 AML other m 2023-10-21T14:52:17.25
IV.FDMO.HHE. ML:2.3 0.001135 0.56 AML other m 2023-10-21T14:52:17.54
IV.SMA1.EHE. ML:2.3 0.00132 0.62 AML other m 2023-10-21T14:52:17.65
IV.GAVE.EHN. ML:2.4 0.0015049999999999998 0.18 AML other m 2023-10-21T14:52:17.53
IV.SMA1.EHN. ML:2.2 0.0010375 0.24 AML other m 2023-10-21T14:52:17.55
IV.CESI.HNE. ML:2.2 0.0007704999999999999 0.14 AML other m 2023-10-21T14:52:18.02
IV.CESI.HHN. ML:2.6 0.0019399999999999999 0.3 AML other m 2023-10-21T14:52:18.17
IV.CESI.HNN. ML:2.5 0.00173 0.3 AML other m 2023-10-21T14:52:18.18
IV.CESI.HHE. ML:2.2 0.0008275 0.72 AML other m 2023-10-21T14:52:18.08
IV.CAMP.HHE. ML:1.9 0.0003215 0.82 AML other m 2023-10-21T14:52:19.55
IV.RM33.EHE. ML:2.2 0.0006554999999999999 1.42 AML other m 2023-10-21T14:52:19.73
IV.RM33.HNN. ML:2.1 0.0006314999999999999 1.12 AML other m 2023-10-21T14:52:19.79
IV.RM33.EHN. ML:2.2 0.0006695 1.14 AML other m 2023-10-21T14:52:19.80
IV.GUMA.HNN. ML:2.3 0.000891 0.6 AML other m 2023-10-21T14:52:20.01
IV.GUMA.HHN. ML:2.4 0.0011255 0.62 AML other m 2023-10-21T14:52:20.32
IV.MF5.EHN. ML:2.1 0.0005949999999999999 1.22 AML other m 2023-10-21T14:52:20.02
IV.GUMA.HHE. ML:2.4 0.0010934999999999999 1.5 AML other m 2023-10-21T14:52:20.15
IV.GUMA.HNE. ML:2.3 0.0009245000000000001 1.52 AML other m 2023-10-21T14:52:20.16
IV.CAMP.HHN. ML:1.8 0.00022700000000000002 0.24 AML other m 2023-10-21T14:52:20.44
IV.MF5.EHE. ML:2.1 0.0005015000000000001 0.88 AML other m 2023-10-21T14:52:20.92
IV.RM33.HNE. ML:2.2 0.0006770000000000001 0.5 AML other m 2023-10-21T14:52:21.49
IV.TERO.HHE. ML:1.9 0.000242 0.96 AML other m 2023-10-21T14:52:22.77
IV.SAP2.EHE. ML:2.1 0.000404 1.04 AML other m 2023-10-21T14:52:22.88
IV.SAP2.EHN. ML:2.8 0.00254 1.16 AML other m 2023-10-21T14:52:22.03
IV.TERO.HHN. ML:1.9 0.000282 1.52 AML other m 2023-10-21T14:52:23.91
IV.ASSB.HHN. ML:2.0 0.00026849999999999997 0.6 AML other m 2023-10-21T14:52:24.90
IV.ASSB.HHE. ML:2.0 0.0003095 1.2 AML other m 2023-10-21T14:52:25.72
IV.CESX.HHN. ML:2.0 0.00023649999999999998 0.3 AML other m 2023-10-21T14:52:25.51
IV.CESX.HHE. ML:1.8 0.00017449999999999999 0.68 AML other m 2023-10-21T14:52:25.86
IV.MNTT.EHN. ML:2.3 0.0006065 1.22 AML other m 2023-10-21T14:52:25.31
IV.OFFI.HHN. ML:2.2 0.000532 0.9 AML other m 2023-10-21T14:52:26.01
IV.FIAM.HHE. ML:2.0 0.00021100000000000003 0.22 AML other m 2023-10-21T14:52:26.83
IV.SNTG.HHN. ML:2.2 0.00033850000000000004 0.1 AML other m 2023-10-21T14:52:26.81
IV.FIAM.HHN. ML:2.0 0.000193 0.2 AML other m 2023-10-21T14:52:27.15
IV.SNTG.HNN. ML:2.1 0.000319 1 AML other m 2023-10-21T14:52:27.81
IV.SNTG.HHE. ML:2.1 0.0002735 0.62 AML other m 2023-10-21T14:52:27.80
IV.SNTG.HNE. ML:2.0 0.0002615 0.62 AML other m 2023-10-21T14:52:27.49
IV.ATCC.EHN. ML:2.0 0.000225 1.44 AML other m 2023-10-21T14:52:27.96
IV.ATCC.EHE. ML:2.0 0.0002335 1.04 AML other m 2023-10-21T14:52:27.97
IV.CING.HHN. ML:2.1 0.00021400000000000002 0.1 AML other m 2023-10-21T14:52:28.59
IV.CING.HHE. ML:2.0 0.0001945 0.08 AML other m 2023-10-21T14:52:29.05
IV.MNTT.EHE. ML:2.4 0.0006785 0.44 AML other m 2023-10-21T14:52:30.44
IV.OFFI.HHE. ML:2.2 0.0005110000000000001 0.42 AML other m 2023-10-21T14:52:30.26
IV.FAGN.HHE. ML:2.1 0.00022899999999999998 0.94 AML other m 2023-10-21T14:52:31.95
IV.ARVD.HHE. ML:2.0 0.00014299999999999998 0.48 AML other m 2023-10-21T14:52:32.69
IV.ARVD.HHN. ML:1.8 0.0000958 0.5 AML other m 2023-10-21T14:52:33.17
IV.MURB.HHN. ML:2.4 0.000383 0.26 AML other m 2023-10-21T14:52:34.20
IV.FAGN.HHN. ML:2.0 0.0001905 1.6 AML other m 2023-10-21T14:52:34.89
IV.MURB.HNE. ML:2.4 0.0004365 1.16 AML other m 2023-10-21T14:52:34.82
IV.MURB.HHE. ML:2.4 0.0004185 1.14 AML other m 2023-10-21T14:52:34.81
IV.T0110.HHN. ML:2.1 0.0001675 0.42 AML other m 2023-10-21T14:52:35.21
IV.MURB.HNN. ML:2.3 0.0003375 0.94 AML other m 2023-10-21T14:52:35.07
IV.FRON.EHE. ML:1.9 0.0000887 1.04 AML other m 2023-10-21T14:52:35.47
IV.FRON.EHN. ML:2.1 0.0001525 0.62 AML other m 2023-10-21T14:52:37.34
IV.T0110.HHE. ML:2.0 0.00014250000000000002 0.66 AML other m 2023-10-21T14:52:37.43
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