Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 15-12-2023 and time 07:42:08 (Italy) in region 5 km S Norcia (PG)

A magnitude ML 1.8 earthquake occured in region: 5 km S Norcia (PG), on

  • 15-12-2023 06:42:08 (UTC)
  • 15-12-2023 07:42:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7530, 13.1000 at 11 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 5 4957 4957
Cascia PG 8 3217 8174
Accumoli RI 14 667 8841
Poggiodomo PG 14 117 8958
Preci PG 15 724 9682
Cittareale RI 16 482 10164
Arquata del Tronto AP 16 1178 11342
Monteleone di Spoleto PG 17 599 11941
Castelsantangelo sul Nera MC 17 281 12222
Cerreto di Spoleto PG 17 1075 13297
Vallo di Nera PG 20 364 13661
Visso MC 20 1107 14768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 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
Reviewed
Rev100 		ML 1.8 2023-12-15
06:42:08		 42.7528 13.1002 11 2023-12-15
06:55:56		 Sala Sismica INGV-Roma 124031491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-15 06:42:08 ± 0.05
Latitude 42.7528 ± 0.0027
Longitude 13.1002 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124031491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 282
Semi-minor axis of confidence ellipse (meter) 263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
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) 60
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51531
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 43
Type of magnitude ML
Reference to an origin 124031491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-15 06:55:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2023-12-15T06:43:17.76 3.0 undecidable manual Sn -9.99 0
GU.GBOS.HHZ. 2023-12-15T06:43:15.33 3.0 undecidable manual Pg 11.86 0
IV.GRI.EHZ. 2023-12-15T06:43:13.62 3.0 negative manual Pg 9.81 0
IV.ECTS.HHZ. 2023-12-15T06:43:03.44 3.0 undecidable manual Pn -6.11 0
IV.SPS2.HHZ. 2023-12-15T06:42:58.34 3.0 negative manual Pg 0.27 0
IV.RIBO.EHZ.01 2023-12-15T06:42:52.82 3.0 undecidable manual Sn 2.69 0
GU.GSCL.HHZ. 2023-12-15T06:42:50.48 3.0 undecidable manual Pg 8.82 0
IV.VENT.EHZ. 2023-12-15T06:42:48.01 3.0 undecidable manual Sg -1.12 0
IV.PIEI.HHZ. 2023-12-15T06:42:39.78 3.0 undecidable manual Sn 0.19 0
IV.ARVD.HHZ. 2023-12-15T06:42:34.82 3.0 undecidable manual Sn -2.05 0
IV.TERO.HHZ. 2023-12-15T06:42:22.28 0.3 undecidable manual S 109 43.5231 50 -0.18 69
IV.GUMA.HHZ. 2023-12-15T06:42:21.84 0.3 undecidable manual S 29 39.3273 50 0.51 65
IV.MML1.EHZ. 2023-12-15T06:42:21.89 0.6 undecidable manual S 345 41.3253 50 0.02 48
IV.CSP1.EHZ. 2023-12-15T06:42:21.18 0.3 undecidable manual S 13 38.5281 50 0.05 72
IV.CESI.HHZ. 2023-12-15T06:42:19.31 0.3 undecidable manual S 330 32.1456 50 -0.11 72
IV.ARRO.EHZ. 2023-12-15T06:42:19.88 0.6 undecidable manual S 235 33.4443 50 0.13 47
IV.FDMO.HHZ. 2023-12-15T06:42:18.96 0.3 undecidable manual S 358 31.4463 50 -0.28 69
IV.FIAM.HHZ. 2023-12-15T06:42:18.13 0.1 undecidable manual P 179 53.8017 50 0.06 93
IV.SNTG.HHZ. 2023-12-15T06:42:18.71 0.3 undecidable manual P 347 57.1983 50 0.12 68
IV.ASSB.HHZ. 2023-12-15T06:42:17.07 0.1 undecidable manual P 312 48.1185 50 -0.13 92
IV.GIGS.HHZ. 2023-12-15T06:42:17.33 0.1 undecidable manual P 131 50.9157 50 -0.3 89
IV.MMO1.EHZ. 2023-12-15T06:42:17.13 0.3 undecidable manual S 49 24.5532 50 -0.26 70
IV.SMA1.EHZ. 2023-12-15T06:42:17.45 0.6 undecidable manual S 125 23.4543 50 0.34 46
IV.PTRJ.HHZ. 2023-12-15T06:42:16.11 3.0 undecidable manual Pn -8.91 0
IV.TERO.HHZ. 2023-12-15T06:42:16.29 0.1 undecidable manual P 109 43.5231 50 -0.2 92
IV.MOMA.HHZ. 2023-12-15T06:42:16.58 0.3 undecidable manual P 278 43.5231 50 0.09 70
IV.GUMA.HHZ. 2023-12-15T06:42:16.07 0.1 undecidable manual P 29 39.3273 50 0.23 92
IV.MF5.EHZ. 2023-12-15T06:42:16.22 0.1 undecidable manual P 48 39.1275 50 0.41 89
IV.MML1.EHZ. 2023-12-15T06:42:16.56 0.3 undecidable manual P 345 41.3253 50 0.41 66
IV.CSP1.EHZ. 2023-12-15T06:42:15.64 0.1 undecidable manual P 13 38.5281 50 -0.08 95
IV.GAVE.EHZ. 2023-12-15T06:42:15.58 0.3 undecidable manual S 248 18.0708 121 -0.07 74
IV.LNSS.HHZ. 2023-12-15T06:42:15.49 0.3 undecidable manual S 196 17.3715 122 0.06 74
IV.CAMP.HHZ. 2023-12-15T06:42:15.10 0.1 undecidable manual P 134 34.8429 50 -0.05 96
IV.FDMO.HHZ. 2023-12-15T06:42:14.46 0.1 undecidable manual P 358 31.4463 50 -0.17 95
IV.CESI.HHZ. 2023-12-15T06:42:14.60 0.1 undecidable manual P 330 32.1456 50 -0.13 95
IV.ARRO.EHZ. 2023-12-15T06:42:14.84 0.1 undecidable manual P 235 33.4443 50 -0.09 96
IV.NRCA.HNZ. 2023-12-15T06:42:13.07 0.3 undecidable manual S 7 8.9799 140 -0.16 74
IV.SMA1.EHZ. 2023-12-15T06:42:13.50 0.3 undecidable manual P 125 23.4543 50 0.1 73
IV.MMO1.EHZ. 2023-12-15T06:42:13.39 0.1 undecidable manual P 49 24.5532 50 -0.17 96
IV.POFI.HHZ. 2023-12-15T06:42:12.11 3.0 undecidable manual P -5.35 0
IV.GAVE.EHZ. 2023-12-15T06:42:12.61 0.1 undecidable manual P 248 18.0708 121 0.05 99
IV.LNSS.HHZ. 2023-12-15T06:42:12.50 0.1 undecidable manual P 196 17.3715 122 0.07 99
IV.NRCA.HNZ. 2023-12-15T06:42:11.24 0.1 undecidable manual P 7 8.9799 140 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.6 0.005885 0.12 AML other m 2023-12-15T06:42:13.28
IV.NRCA.HNE. ML:2.6 0.0056 0.14 AML other m 2023-12-15T06:42:13.29
IV.GAVE.HNN. ML:1.6 0.000286011315 0.112 AML other m 2023-12-15T06:42:16.11
IV.LNSS.HHE. ML:1.9 0.0007153273 0.1376 AML other m 2023-12-15T06:42:16.70
IV.GAVE.EHN. ML:2.1 0.0010005059000000001 0.1184 AML other m 2023-12-15T06:42:15.95
IV.LNSS.HHN. ML:2.0 0.0007844999999999999 0.12 AML other m 2023-12-15T06:42:16.26
IV.LNSS.HNE. ML:1.9 0.0006697661 0.1376 AML other m 2023-12-15T06:42:16.70
IV.LNSS.HNN. ML:2.0 0.0007723855500000001 0.1088 AML other m 2023-12-15T06:42:16.26
IV.GAVE.EHE. ML:2.1 0.0010473880499999998 0.2016 AML other m 2023-12-15T06:42:16.74
IV.GAVE.HNE. ML:2.1 0.0010183668 0.1888 AML other m 2023-12-15T06:42:16.73
IV.MMO1.EHE. ML:1.8 0.00036512845 0.2592 AML other m 2023-12-15T06:42:18.02
IV.MMO1.EHN. ML:1.7 0.00032267239999999995 0.1376 AML other m 2023-12-15T06:42:18.52
IV.SMA1.EHE. ML:1.7 0.00032613970000000005 0.2016 AML other m 2023-12-15T06:42:18.96
IV.SMA1.EHN. ML:1.6 0.00027083384999999996 0.1824 AML other m 2023-12-15T06:42:18.32
IV.FDMO.HHE. ML:1.7 0.00023563805 0.1408 AML other m 2023-12-15T06:42:20.46
IV.FDMO.HHN. ML:1.8 0.0002928038 0.24 AML other m 2023-12-15T06:42:19.62
IV.CESI.HHE. ML:1.7 0.00024179945 0.1792 AML other m 2023-12-15T06:42:20.48
IV.CESI.HHN. ML:1.8 0.0003013306 0.24 AML other m 2023-12-15T06:42:19.80
IV.CESI.HNE. ML:1.8 0.00026209525 0.1792 AML other m 2023-12-15T06:42:20.48
IV.CESI.HNN. ML:1.8 0.00029708165 0.2912 AML other m 2023-12-15T06:42:19.57
IV.ARRO.EHE. ML:1.5 0.00012934804999999999 0.2208 AML other m 2023-12-15T06:42:20.69
IV.ARRO.EHN. ML:1.4 0.00012118378 0.1824 AML other m 2023-12-15T06:42:22.60
IV.CSP1.EHE. ML:2.1 0.00048040775 0.2176 AML other m 2023-12-15T06:42:21.61
IV.CSP1.EHN. ML:2.1 0.0004231626 0.3008 AML other m 2023-12-15T06:42:21.75
IV.GUMA.HNN. ML:2.1 0.00039915655 0.24 AML other m 2023-12-15T06:42:23.58
IV.GUMA.HHN. ML:1.9 0.00028521645 0.32 AML other m 2023-12-15T06:42:25.62
IV.TERO.HHE. ML:1.5 0.000102122805 0.16 AML other m 2023-12-15T06:42:23.74
IV.TERO.HHN. ML:1.8 0.000198625 0.0992 AML other m 2023-12-15T06:42:22.61
IV.TERO.HNN. ML:1.8 0.0002157458 0.0896 AML other m 2023-12-15T06:42:22.62
IV.MML1.HNE. ML:1.7 0.00016989143499999997 0.3296 AML other m 2023-12-15T06:42:22.35
IV.MML1.HNN. ML:1.8 0.00018511464999999998 0.1984 AML other m 2023-12-15T06:42:22.45
IV.MML1.EHE. ML:1.7 0.000167906935 0.32 AML other m 2023-12-15T06:42:22.36
IV.MML1.EHN. ML:1.7 0.00016907405 0.1792 AML other m 2023-12-15T06:42:22.46
IV.MOMA.HNE. ML:2.0 0.00030572374999999997 0.1824 AML other m 2023-12-15T06:42:24.32
IV.MOMA.HNN. ML:1.9 0.0002288639 0.1984 AML other m 2023-12-15T06:42:24.87
IV.MOMA.HHE. ML:2.0 0.00030816465000000004 0.1792 AML other m 2023-12-15T06:42:23.63
IV.MOMA.HHN. ML:2.0 0.0002829642 0.2208 AML other m 2023-12-15T06:42:24.32
IV.FIAM.HHE. ML:1.8 0.00016665705 0.32 AML other m 2023-12-15T06:42:26.62
IV.FIAM.HNE. ML:1.9 0.000188789 0.3296 AML other m 2023-12-15T06:42:26.79
IV.FIAM.HNN. ML:1.8 0.00016142495000000002 0.5184 AML other m 2023-12-15T06:42:27.62
IV.SNTG.HHE. ML:1.5 0.00007498719 0.1216 AML other m 2023-12-15T06:42:27.06
IV.SNTG.HHN. ML:1.7 0.00011147661 0.2016 AML other m 2023-12-15T06:42:26.72
IV.SNTG.HNE. ML:1.8 0.0001330169 0.2528 AML other m 2023-12-15T06:42:26.81
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