Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 12-02-2023 and time 06:50:16 (UTC) in region 6 km SE Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 6 km SE Norcia (PG), on

  • 12-02-2023 06:50:16 (UTC)
  • 12-02-2023 07:50:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7510, 13.1380 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 6 4957 4957
Cascia PG 11 3217 8174
Accumoli RI 11 667 8841
Arquata del Tronto AP 13 1178 10019
Cittareale RI 15 482 10501
Castelsantangelo sul Nera MC 16 281 10782
Preci PG 16 724 11506
Poggiodomo PG 17 117 11623
Amatrice RI 18 2657 14280
Monteleone di Spoleto PG 19 599 14879
Montegallo AP 19 523 15402
Cerreto di Spoleto PG 20 1075 16477

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of Foligno (57155 inhabitants)
45 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km W 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
Bulletin
Rev1000 		ML 1.7 2023-02-12
06:50:16		 42.751 13.1377 10 2024-03-01
17:18:03		 Bollettino Sismico Italiano INGV 116415131
Reviewed
Rev100 		ML 1.7 2023-02-12
06:50:16		 42.7502 13.1348 10 2023-02-12
06:58:50		 Sala Sismica INGV-Roma 114371181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-12 06:50:16 ± 0.03
Latitude 42.7510 ± 0.0018
Longitude 13.1377 ± 0.0024
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 116415131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 233
Semi-minor axis of confidence ellipse (meter) 89
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
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) 43
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 51
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) 0.73205
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 114371181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-12 06:58:50

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 116415131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-15 17:31:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HHZ. 2023-02-12T06:50:38.74 1.0 undecidable manual S 4 69.4749 50 0.96 17
IV.EL6.EHZ. 2023-02-12T06:50:37.12 1.0 undecidable manual S 357 64.1913 50 0.73 19
IV.SNTG.HHZ. 2023-02-12T06:50:35.15 1.0 undecidable manual S 344 58.0974 50 0.38 21
IV.FIAM.HHZ. 2023-02-12T06:50:33.93 3.0 undecidable manual S -0.45 0
IV.GIGS.HHZ. 2023-02-12T06:50:32.13 1.0 undecidable manual S 133 48.5181 50 -0.07 23
IV.MF5.EHZ. 2023-02-12T06:50:30.12 1.0 undecidable manual S 45 37.1295 50 0.97 18
IV.TERO.HHZ. 2023-02-12T06:50:30.01 0.6 undecidable manual S 110 40.626 50 -0.07 47
IV.SSFR.HHZ. 2023-02-12T06:50:30.52 1.0 undecidable manual P 339 81.252 50 -0.13 22
IV.GUMA.HHZ. 2023-02-12T06:50:30.19 1.0 undecidable manual S 25 38.1285 50 0.77 19
IV.MML1.EHZ. 2023-02-12T06:50:30.58 0.6 undecidable manual S 342 42.4242 50 0.01 48
IV.CSP1.EHZ. 2023-02-12T06:50:29.49 1.0 undecidable manual S 8 38.2284 50 0.05 24
IV.CING.HHZ. 2023-02-12T06:50:28.79 1.0 undecidable manual P 4 69.4749 50 -0.03 23
IV.CESI.HHZ. 2023-02-12T06:50:28.20 0.6 undecidable manual S 326 33.9438 50 -0.11 48
IV.EL6.EHZ. 2023-02-12T06:50:28.12 0.3 undecidable manual P 357 64.1913 50 0.1 67
IV.FDMO.HHZ. 2023-02-12T06:50:27.60 0.6 undecidable manual S 353 31.9458 50 -0.17 47
IV.ATCC.EHZ. 2023-02-12T06:50:27.83 1.0 undecidable manual P 320 62.8926 50 0.02 23
IV.CAMP.HHZ. 2023-02-12T06:50:27.71 1.0 undecidable manual S 137 32.5452 50 -0.23 23
IV.RM33.EHZ. 2023-02-12T06:50:26.49 0.6 undecidable manual S 167 27.5502 50 -0.12 48
IV.SNTG.HHZ. 2023-02-12T06:50:26.92 0.3 undecidable manual P 344 58.0974 50 -0.16 67
IV.CESX.HHZ. 2023-02-12T06:50:25.33 0.6 undecidable manual P 251 47.619 50 -0.13 46
IV.SMA1.EHZ. 2023-02-12T06:50:25.25 1.0 undecidable manual S 130 20.9679 116 0.59 22
IV.MOMA.HHZ. 2023-02-12T06:50:25.36 0.3 undecidable manual P 277 46.62 50 0.06 70
IV.GIGS.HHZ. 2023-02-12T06:50:25.44 0.6 undecidable manual P 133 48.5181 50 -0.16 46
IV.MML1.EHZ. 2023-02-12T06:50:24.50 0.1 undecidable manual P 342 42.4242 50 -0.16 93
7F.SIB2.EHE. 2023-02-12T06:50:24.24 0.6 undecidable manual S 41 20.5683 116 -0.31 47
7F.SIB1.EHE. 2023-02-12T06:50:24.14 0.3 undecidable manual S 34 19.2696 118 0.01 75
IV.MC2.EHZ. 2023-02-12T06:50:24.29 0.6 undecidable manual S 13 18.2706 119 0.45 45
IV.GAVE.EHZ. 2023-02-12T06:50:24.68 0.3 undecidable manual S 252 20.868 116 0.04 74
IV.MF5.EHZ. 2023-02-12T06:50:24.10 0.6 undecidable manual P 45 37.1295 50 0.26 46
IV.MMO1.EHZ. 2023-02-12T06:50:24.99 0.6 undecidable manual S 43 22.5552 114 -0.17 48
IV.TERO.HHZ. 2023-02-12T06:50:24.31 0.3 undecidable manual P 110 40.626 50 -0.07 71
IV.MTRA.EHZ. 2023-02-12T06:50:24.62 0.6 undecidable manual S 88 21.0678 116 -0.09 49
IV.GUMA.HHZ. 2023-02-12T06:50:24.27 0.3 undecidable manual P 25 38.1285 50 0.28 68
IV.CSP1.EHZ. 2023-02-12T06:50:23.94 0.1 positive manual P 8 38.2284 50 -0.07 95
IV.LNSS.HHZ. 2023-02-12T06:50:23.99 0.3 undecidable manual S 206 18.2706 119 0.16 72
IV.CAMP.HHZ. 2023-02-12T06:50:23.10 0.1 negative manual P 137 32.5452 50 -0.04 97
IV.ARRO.EHZ. 2023-02-12T06:50:23.60 0.3 undecidable manual P 238 35.8419 50 -0.04 72
IV.CESI.HHZ. 2023-02-12T06:50:23.24 0.1 positive manual P 326 33.9438 50 -0.11 95
IT.MTCL.HGZ. 2023-02-12T06:50:22.39 0.3 undecidable manual P 337 29.1486 50 -0.23 70
IV.RM33.EHZ. 2023-02-12T06:50:22.22 0.3 undecidable manual P 167 27.5502 50 -0.15 71
IV.FDMO.HHZ. 2023-02-12T06:50:22.88 0.1 positive manual P 353 31.9458 50 -0.16 94
IV.NRCA.HNZ. 2023-02-12T06:50:21.00 0.3 undecidable manual S 348 9.3795 137 -0.37 70
IV.MTRA.EHZ. 2023-02-12T06:50:21.24 0.1 undecidable manual P 88 21.0678 116 -0.03 99
IV.SMA1.EHZ. 2023-02-12T06:50:21.33 0.1 undecidable manual P 130 20.9679 116 0.09 98
7F.SIB2.EHE. 2023-02-12T06:50:21.07 0.1 positive manual P 41 20.5683 116 -0.11 97
7F.SIB1.EHE. 2023-02-12T06:50:21.01 0.1 positive manual P 34 19.2696 118 0.07 98
IV.GAVE.EHZ. 2023-02-12T06:50:21.33 0.1 positive manual P 252 20.868 116 0.1 97
IV.MMO1.EHZ. 2023-02-12T06:50:21.40 0.1 undecidable manual P 43 22.5552 114 -0.13 96
7F.SIB3.EHN. 2023-02-12T06:50:20.60 0.3 undecidable manual P 38 17.4714 120 -0.03 74
IV.MC2.EHZ. 2023-02-12T06:50:20.89 0.1 undecidable manual P 13 18.2706 119 0.12 97
IV.LNSS.HHZ. 2023-02-12T06:50:20.95 0.1 positive manual P 206 18.2706 119 0.18 96
IV.NRCA.HNZ. 2023-02-12T06:50:19.41 0.1 undecidable manual P 348 9.3795 137 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.0 0.0019450000000000001 0.16 AML other m 2023-02-12T06:50:21.13
IV.NRCA.HNN. ML:0.0 0.001695 0.18 AML other m 2023-02-12T06:50:21.14
IV.NRCA.HHE. ML:0.0 0.0026100000000000003 0.18 AML other m 2023-02-12T06:50:21.13
IV.NRCA.HNE. ML:0.0 0.0025499999999999997 0.18 AML other m 2023-02-12T06:50:21.14
IV.LNSS.HHE. ML:0.0 0.000755 0.32 AML other m 2023-02-12T06:50:24.32
IV.LNSS.HNE. ML:0.0 0.0007624999999999999 0.32 AML other m 2023-02-12T06:50:24.33
IV.LNSS.HHN. ML:0.0 0.0008265 0.12 AML other m 2023-02-12T06:50:24.64
IV.LNSS.HNN. ML:0.0 0.0007785 0.12 AML other m 2023-02-12T06:50:24.64
IV.MTRA.EHN. ML:0.0 0.00046199999999999995 1.8 AML other m 2023-02-12T06:50:24.97
IV.MTRA.HNN. ML:0.0 0.0004125 1.82 AML other m 2023-02-12T06:50:24.06
IV.MTRA.HNE. ML:0.0 0.00044599999999999994 1.84 AML other m 2023-02-12T06:50:25.06
IV.MTRA.EHE. ML:0.0 0.00044 1.84 AML other m 2023-02-12T06:50:25.07
IV.MC2.EHE. ML:0.0 0.0004545 0.44 AML other m 2023-02-12T06:50:25.30
IV.GAVE.EHN. ML:0.0 0.00047099999999999996 1.3 AML other m 2023-02-12T06:50:25.96
IV.MMO1.EHE. ML:0.0 0.000246 0.14 AML other m 2023-02-12T06:50:25.34
IV.GAVE.EHE. ML:0.0 0.000518 0.48 AML other m 2023-02-12T06:50:25.34
IV.SMA1.EHN. ML:0.0 0.0002455 0.28 AML other m 2023-02-12T06:50:25.43
IV.MMO1.EHN. ML:0.0 0.0002325 0.18 AML other m 2023-02-12T06:50:26.17
IV.MC2.EHN. ML:0.0 0.0005074999999999999 0.22 AML other m 2023-02-12T06:50:26.39
IV.RM33.EHN. ML:0.0 0.00008555 0.62 AML other m 2023-02-12T06:50:27.47
IV.RM33.EHE. ML:0.0 0.0000937 0.34 AML other m 2023-02-12T06:50:27.30
IV.CESI.HHN. ML:0.0 0.000133 0.48 AML other m 2023-02-12T06:50:28.84
IV.CESI.HHE. ML:0.0 0.0000824 0.92 AML other m 2023-02-12T06:50:29.48
IV.SMA1.EHE. ML:0.0 0.00020502415 0.16 AML other m 2023-02-12T06:50:26.04
IV.TERO.HHN. ML:0.0 0.00010180000000000001 0.44 AML other m 2023-02-12T06:50:30.65
IV.CSP1.EHE. ML:0.0 0.00015554999999999999 1.3 AML other m 2023-02-12T06:50:30.87
IV.MML1.EHN. ML:0.0 0.00006685 0.14 AML other m 2023-02-12T06:50:30.89
IV.TERO.HHE. ML:0.0 0.00009275 0.36 AML other m 2023-02-12T06:50:31.37
IV.GUMA.HHE. ML:0.0 0.0002375 0.84 AML other m 2023-02-12T06:50:31.10
IV.MML1.EHE. ML:0.0 0.0000393 0.64 AML other m 2023-02-12T06:50:31.96
IV.CSP1.EHN. ML:0.0 0.0001645 0.16 AML other m 2023-02-12T06:50:31.65
IV.GUMA.HHN. ML:0.0 0.00014450000000000002 1.64 AML other m 2023-02-12T06:50:32.07
IV.MOMA.HHN. ML:0.0 0.00010005 0.8 AML other m 2023-02-12T06:50:33.81
IV.MOMA.HHE. ML:0.0 0.00007052560499999999 0.72 AML other m 2023-02-12T06:50:33.48
IV.SSFR.HHN. ML:0.0 0.00004035 1.82 AML other m 2023-02-12T06:50:45.03
IV.SSFR.HHE. ML:0.0 0.0000326 1.32 AML other m 2023-02-12T06:50:45.70
IV.GAVE.HNE. ML:0.0 0.0005061938499999999 0.4576 AML other m 2023-02-12T06:50:25.33
IV.MF5.EHN. ML:0.0 0.00007236735999999999 0.6816 AML other m 2023-02-12T06:50:31.21
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