Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 05-02-2023 and time 08:24:27 (Italy) in region 4 km S Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 4 km S Norcia (PG), on

  • 05-02-2023 07:24:27 (UTC)
  • 05-02-2023 08:24:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7560, 13.0840 at 9 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 4 4957 4957
Cascia PG 7 3217 8174
Poggiodomo PG 13 117 8291
Preci PG 14 724 9015
Accumoli RI 15 667 9682
Cerreto di Spoleto PG 15 1075 10757
Monteleone di Spoleto PG 16 599 11356
Castelsantangelo sul Nera MC 17 281 11637
Cittareale RI 17 482 12119
Arquata del Tronto AP 18 1178 13297
Vallo di Nera PG 18 364 13661
Sellano PG 20 1079 14740
Visso MC 20 1107 15847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
52 Km W of Teramo (54892 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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 2023-02-05
07:24:27		 42.7563 13.0835 9 2024-03-01
17:18:14		 Bollettino Sismico Italiano INGV 120379321
Reviewed
Rev100 		ML 1.7 2023-02-05
07:24:27		 42.7587 13.0753 10 2023-02-05
07:28:45		 Sala Sismica INGV-Roma 114075401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-05 07:24:27 ± 0.05
Latitude 42.7563 ± 0.0018
Longitude 13.0835 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 120379321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 58
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.08004
Epicentral distance of station farthest from the epicenter (degree) 0.57287
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 114075401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-05 07:28:45

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 120379321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-22 10:40:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2023-02-05T07:24:47.80 0.6 undecidable manual S 1 63.5919 50 0.6 41
IV.ATCC.EHE. 2023-02-05T07:24:46.60 0.3 undecidable manual S 323 59.6958 50 0.44 64
IV.SNTG.HHZ. 2023-02-05T07:24:45.60 0.6 undecidable manual S 348 56.499 50 0.28 45
IV.FIAM.HHZ. 2023-02-05T07:24:44.90 1.0 undecidable manual S 177 54.2013 50 0.19 23
IV.GIGS.HHN. 2023-02-05T07:24:43.90 0.3 undecidable manual S 130 52.2033 50 -0.27 68
IV.TERO.HHZ. 2023-02-05T07:24:42.30 0.6 undecidable manual S 109 44.9217 50 0.07 48
IV.PF6.EHN. 2023-02-05T07:24:41.60 0.3 undecidable manual S 12 43.2234 50 -0.18 70
IV.MOMA.HHZ. 2023-02-05T07:24:41.30 0.6 undecidable manual S 277 42.1245 50 -0.18 47
IV.GUMA.HHZ. 2023-02-05T07:24:41.20 0.6 undecidable manual S 31 39.627 50 0.38 45
IT.FOPC.HGN. 2023-02-05T07:24:41.10 0.6 undecidable manual S 308 38.9277 50 0.47 44
IV.CESX.HHE. 2023-02-05T07:24:41.90 0.6 undecidable manual S 248 43.7229 50 0 48
IV.MF5.EHZ. 2023-02-05T07:24:41.40 0.6 undecidable manual S 50 39.9267 50 0.51 44
IV.CSP1.EHZ. 2023-02-05T07:24:40.60 0.6 undecidable manual S 15 38.5281 50 0.09 48
IV.MML1.EHZ. 2023-02-05T07:24:40.90 0.3 undecidable manual S 347 40.626 50 -0.18 71
IV.EL6.EHZ. 2023-02-05T07:24:38.88 0.3 undecidable manual P 1 63.5919 50 0.05 70
IV.CAMP.HHE. 2023-02-05T07:24:38.90 1.0 undecidable manual S 133 36.1416 50 -0.97 18
IV.ATCC.EHE. 2023-02-05T07:24:38.19 0.1 undecidable manual P 323 59.6958 50 -0.04 93
IV.FDMO.HHZ. 2023-02-05T07:24:38.10 0.3 undecidable manual S 1 31.0467 50 -0.43 68
IV.SNTG.HHZ. 2023-02-05T07:24:37.68 0.1 undecidable manual P 348 56.499 50 -0.07 93
IV.CESI.HHZ. 2023-02-05T07:24:37.80 0.6 undecidable manual S 332 31.1466 50 -0.75 40
IV.FIAM.HHZ. 2023-02-05T07:24:37.23 0.6 undecidable manual P 177 54.2013 50 -0.17 46
IV.RM33.EHZ. 2023-02-05T07:24:37.70 0.3 undecidable manual S 159 29.4483 50 -0.39 69
IV.SMA1.EHZ. 2023-02-05T07:24:36.60 0.6 undecidable manual S 124 24.8529 111 -0.02 50
IV.GIGS.HHN. 2023-02-05T07:24:36.85 0.3 undecidable manual P 130 52.2033 50 -0.24 68
IV.CESX.HHE. 2023-02-05T07:24:36.03 0.1 undecidable manual P 248 43.7229 50 0.26 92
IV.MTRA.EHZ. 2023-02-05T07:24:36.70 0.3 undecidable manual S 90 25.4523 110 -0.14 73
IV.MMO1.EHZ. 2023-02-05T07:24:36.60 0.6 undecidable manual S 51 25.3524 110 -0.2 48
IT.MTCL.HGZ. 2023-02-05T07:24:36.80 0.3 undecidable manual S 345 27.2505 109 -0.6 65
IV.PF6.EHN. 2023-02-05T07:24:35.58 0.1 undecidable manual P 12 43.2234 50 -0.13 95
IV.TERO.HHZ. 2023-02-05T07:24:35.87 0.1 undecidable manual P 109 44.9217 50 -0.09 95
IT.FOPC.HGN. 2023-02-05T07:24:35.06 0.1 undecidable manual P 308 38.9277 50 0.02 97
IV.MOMA.HHZ. 2023-02-05T07:24:35.54 0.3 undecidable manual P 277 42.1245 50 0.01 73
7F.SIB2.EHE. 2023-02-05T07:24:35.80 0.3 undecidable manual S 50 23.3544 112 -0.34 70
7F.SIB1.EHE. 2023-02-05T07:24:35.70 0.3 undecidable manual S 45 21.5673 114 0.12 74
IV.MF5.EHZ. 2023-02-05T07:24:35.79 0.1 undecidable manual P 50 39.9267 50 0.6 85
IV.MC2.EHZ. 2023-02-05T07:24:35.00 0.3 undecidable manual S 26 19.2696 116 0.17 73
IV.FEMA.HNE. 2023-02-05T07:24:35.70 0.3 undecidable manual S 353 22.9548 112 -0.33 71
IV.GUMA.HHZ. 2023-02-05T07:24:35.48 0.1 undecidable manual P 31 39.627 50 0.33 91
IV.MML1.EHZ. 2023-02-05T07:24:35.19 0.3 undecidable manual P 347 40.626 50 -0.11 72
IV.LNSS.HHZ. 2023-02-05T07:24:34.20 0.3 undecidable manual S 192 17.3715 118 -0.07 75
IV.CSP1.EHZ. 2023-02-05T07:24:34.98 0.1 undecidable manual P 15 38.5281 50 0.01 98
7F.SIB3.EHN. 2023-02-05T07:24:34.80 0.6 undecidable manual S 49 20.0688 115 -0.31 47
IV.CAMP.HHE. 2023-02-05T07:24:34.52 0.3 undecidable manual P 133 36.1416 50 -0.08 73
IV.CESI.HHZ. 2023-02-05T07:24:33.69 0.1 undecidable manual P 332 31.1466 50 -0.15 96
IT.MTCL.HGZ. 2023-02-05T07:24:33.01 0.1 undecidable manual P 345 27.2505 109 -0.17 97
IV.RM33.EHZ. 2023-02-05T07:24:33.47 0.1 undecidable manual P 159 29.4483 50 -0.1 97
IV.FDMO.HHZ. 2023-02-05T07:24:33.66 0.1 undecidable manual P 1 31.0467 50 -0.17 96
IV.SMA1.EHZ. 2023-02-05T07:24:33.04 0.3 undecidable manual P 124 24.8529 111 0.31 71
IV.FEMA.HNE. 2023-02-05T07:24:32.48 0.1 undecidable manual P 353 22.9548 112 0.1 99
IV.MC2.EHZ. 2023-02-05T07:24:32.02 0.1 undecidable manual P 26 19.2696 116 0.32 95
7F.SIB1.EHE. 2023-02-05T07:24:32.31 0.1 undecidable manual P 45 21.5673 114 0.19 97
IV.MTRA.EHZ. 2023-02-05T07:24:32.95 0.1 undecidable manual P 90 25.4523 110 0.1 98
7F.SIB2.EHE. 2023-02-05T07:24:32.42 0.1 undecidable manual P 50 23.3544 112 -0.03 100
IV.MMO1.EHZ. 2023-02-05T07:24:32.85 0.1 undecidable manual P 51 25.3524 110 0.02 100
IV.NRCA.HHZ. 2023-02-05T07:24:31.70 0.3 undecidable manual S 16 8.88 137 -0.21 74
IV.LNSS.HHZ. 2023-02-05T07:24:31.67 0.1 negative manual P 192 17.3715 118 0.3 95
7F.SIB3.EHN. 2023-02-05T07:24:31.97 0.1 undecidable manual P 49 20.0688 115 0.12 99
IV.NRCA.HHZ. 2023-02-05T07:24:30.24 0.1 undecidable manual P 16 8.88 137 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.0 0.0014078810000000001 0.1408 AML other m 2023-02-05T07:24:32.30
IV.NRCA.HNE. ML:0.0 0.0013451345 0.16 AML other m 2023-02-05T07:24:32.01
IV.NRCA.HHN. ML:0.0 0.00099123065 0.1216 AML other m 2023-02-05T07:24:32.11
IV.NRCA.HNN. ML:0.0 0.000976 0.12 AML other m 2023-02-05T07:24:32.12
IV.LNSS.HHE. ML:0.0 0.0006869671 0.16 AML other m 2023-02-05T07:24:35.12
IV.LNSS.HNE. ML:0.0 0.0006666481 0.1504 AML other m 2023-02-05T07:24:35.12
IV.LNSS.HNN. ML:0.0 0.00044824219999999997 0.1216 AML other m 2023-02-05T07:24:35.07
IV.LNSS.HHN. ML:0.0 0.0005311248 0.1216 AML other m 2023-02-05T07:24:35.07
IV.MC2.EHE. ML:0.0 0.000451060085 0.32 AML other m 2023-02-05T07:24:36.31
IV.MC2.EHN. ML:0.0 0.00069914385 0.2016 AML other m 2023-02-05T07:24:36.35
IV.MMO1.EHE. ML:0.0 0.00011858026999999998 0.2208 AML other m 2023-02-05T07:24:38.76
IV.MTRA.EHE. ML:0.0 0.00030765365 0.1408 AML other m 2023-02-05T07:24:38.24
IV.MTRA.EHN. ML:0.0 0.0002450918 0.1408 AML other m 2023-02-05T07:24:37.11
IV.RM33.EHN. ML:0.0 0.0003397154 0.2208 AML other m 2023-02-05T07:24:38.34
IV.FDMO.HHN. ML:0.0 0.0001961169 0.1376 AML other m 2023-02-05T07:24:38.65
IV.FDMO.HHE. ML:0.0 0.00017818715 0.16 AML other m 2023-02-05T07:24:38.42
IV.MMO1.EHN. ML:0.0 0.000114766905 0.08 AML other m 2023-02-05T07:24:37.21
IV.RM33.EHE. ML:0.0 0.00016143615 0.24 AML other m 2023-02-05T07:24:38.87
IV.CESI.HHE. ML:0.0 0.00019759054999999998 0.1792 AML other m 2023-02-05T07:24:38.89
IV.CESI.HHN. ML:0.0 0.0002422761 0.2976 AML other m 2023-02-05T07:24:38.27
IV.SMA1.EHN. ML:0.0 0.0002124872 0.3008 AML other m 2023-02-05T07:24:40.40
IV.SMA1.EHE. ML:0.0 0.0003074934 0.2208 AML other m 2023-02-05T07:24:38.09
IV.FIAM.HHE. ML:1.4 0.0000664 0.42 AML other m 2023-02-05T07:24:41.91
IV.MOMA.HHE. ML:1.7 0.00016049999999999997 0.16 AML other m 2023-02-05T07:24:42.67
IV.MOMA.HHN. ML:1.4 0.0000797 0.56 AML other m 2023-02-05T07:24:43.06
IV.TERO.HHE. ML:1.3 0.00005465000000000001 0.42 AML other m 2023-02-05T07:24:43.96
IV.FIAM.HHN. ML:1.5 0.0000731 0.42 AML other m 2023-02-05T07:24:56.61
IV.TERO.HHN. ML:1.6 0.0001346 0.42 AML other m 2023-02-05T07:24:57.21
IV.MTRA.HNE. ML:1.8 0.00032602085 0.16 AML other m 2023-02-05T07:24:38.24
IV.MTRA.HNN. ML:1.6 0.0002571955 0.1376 AML other m 2023-02-05T07:24:37.44
IV.RM33.HNN. ML:1.8 0.00032732885 0.2016 AML other m 2023-02-05T07:24:38.24
IV.RM33.HNE. ML:1.6 0.00018715816 0.32 AML other m 2023-02-05T07:24:38.26
IV.CESI.HNE. ML:1.6 0.00019822575 0.1888 AML other m 2023-02-05T07:24:38.80
IV.CESI.HNN. ML:1.7 0.00023570423499999997 0.32 AML other m 2023-02-05T07:24:39.01
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