Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 28-12-2023 and time 10:52:30 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 7 km E Norcia (PG), on

  • 28-12-2023 09:52:30 (UTC)
  • 28-12-2023 10:52:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7900, 13.1790 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 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Castelsantangelo sul Nera MC 12 281 6416
Accumoli RI 12 667 7083
Montegallo AP 14 523 7606
Preci PG 15 724 8330
Cascia PG 16 3217 11547
Montemonaco AP 17 604 12151
Visso MC 17 1107 13258
Ussita MC 18 444 13702
Acquasanta Terme AP 19 2916 16618
Cittareale RI 19 482 17100
Amatrice RI 20 2657 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
50 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km S of Ancona (100861 inhabitants)
97 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 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 2023-12-28
09:52:30		 42.7903 13.179 10 2023-12-28
10:10:47		 Sala Sismica INGV-Roma 124317541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-28 09:52:30 ± 0.04
Latitude 42.7903 ± 0.0018
Longitude 13.1790 ± 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 124317541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 257
Semi-minor axis of confidence ellipse (meter) 94
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 66
Number of defining phases 65
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58906
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 33
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 124317541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-28 10:10:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2023-12-28T09:52:58.34 3.0 undecidable manual Sn -6.68 0
IV.FOSV.HNE. 2023-12-28T09:52:51.63 0.6 undecidable manual S 329 65.3901 50 0.4 42
IV.ATCC.EHZ. 2023-12-28T09:52:50.99 0.3 undecidable manual S 315 61.8936 50 0.69 58
IV.FIAM.HHZ. 2023-12-28T09:52:49.49 0.6 undecidable manual S 185 58.1973 50 0.19 45
IV.SNTG.HHZ. 2023-12-28T09:52:48.64 0.3 undecidable manual S 340 55.0005 50 0.17 67
IV.ASSB.HHZ. 2023-12-28T09:52:47.29 0.3 undecidable manual S 304 50.7159 50 -0.01 70
IV.GIGS.HHZ. 2023-12-28T09:52:46.58 0.3 undecidable manual S 139 49.3173 50 -0.36 66
IV.MNTT.EHN. 2023-12-28T09:52:46.70 1.0 undecidable manual S 48 45.3213 50 0.83 19
IV.MDAR.HNN. 2023-12-28T09:52:45.88 0.3 undecidable manual S 356 44.7219 50 0.17 69
IV.ARRO.EHN. 2023-12-28T09:52:44.85 0.3 undecidable manual S 235 41.0256 50 0.12 70
IV.MML1.EHZ. 2023-12-28T09:52:44.27 0.3 undecidable manual S 335 39.627 50 -0.07 71
IV.PF6.EHZ. 2023-12-28T09:52:43.68 0.3 undecidable manual S 2 38.5281 50 -0.39 66
IV.GUMA.HHZ. 2023-12-28T09:52:43.23 0.3 undecidable manual S 23 32.745 50 0.71 60
IV.TERO.HHZ. 2023-12-28T09:52:43.98 0.3 undecidable manual S 118 39.3273 50 -0.29 68
IV.CESI.HHZ. 2023-12-28T09:52:42.26 0.3 undecidable manual S 317 32.6451 50 -0.22 70
IV.MF5.EHZ. 2023-12-28T09:52:42.88 0.3 undecidable manual S 46 31.6461 50 0.67 62
IV.CSP1.EHZ. 2023-12-28T09:52:42.39 0.3 undecidable manual S 4 33.5442 50 -0.32 68
IV.ASCOL.EHE. 2023-12-28T09:52:42.55 0.3 undecidable manual S 78 34.0437 50 -0.32 68
IV.ATCC.EHZ. 2023-12-28T09:52:42.22 0.1 undecidable manual P 315 61.8936 50 0.09 90
IV.CAMP.HHZ. 2023-12-28T09:52:42.49 0.3 undecidable manual S 146 33.9438 50 -0.34 68
IV.RM33.EHZ. 2023-12-28T09:52:42.13 0.3 undecidable manual S 175 31.3464 50 -0.01 73
IV.FOSV.HNE. 2023-12-28T09:52:42.96 0.3 undecidable manual P 329 65.3901 50 0.29 65
IV.FIAM.HHZ. 2023-12-28T09:52:41.51 0.1 positive manual P 185 58.1973 50 -0.04 92
IV.SNTG.HHZ. 2023-12-28T09:52:40.90 0.1 undecidable manual P 340 55.0005 50 -0.17 90
IV.MNTT.EHN. 2023-12-28T09:52:40.28 0.1 undecidable manual P 48 45.3213 50 0.71 79
IV.GAVE.EHZ. 2023-12-28T09:52:40.48 0.3 undecidable manual S 245 25.6521 110 0.02 73
IV.OFFI.HHE. 2023-12-28T09:52:40.05 0.3 undecidable manual P 69 44.2224 50 0.65 61
IV.FDMO.HHZ. 2023-12-28T09:52:40.91 0.3 undecidable manual S 345 28.2495 50 -0.42 67
IT.MTCL.HGN. 2023-12-28T09:52:40.35 0.3 undecidable manual S 327 26.8509 110 -0.52 66
IV.ASSB.HHZ. 2023-12-28T09:52:40.27 0.1 undecidable manual P 304 50.7159 50 -0.13 91
IV.MDAR.HNN. 2023-12-28T09:52:39.35 0.3 undecidable manual P 356 44.7219 50 -0.13 69
IV.GIGS.HHZ. 2023-12-28T09:52:39.96 0.1 undecidable manual P 139 49.3173 50 -0.23 90
IV.LNSS.HHZ. 2023-12-28T09:52:39.97 0.3 undecidable manual S 209 23.6541 112 0.14 72
IV.ARRO.EHN. 2023-12-28T09:52:39.04 0.1 undecidable manual P 235 41.0256 50 0.12 93
IV.SMA1.EHZ. 2023-12-28T09:52:39.26 0.3 undecidable manual S 144 21.867 114 0.02 74
IV.TERO.HHZ. 2023-12-28T09:52:38.43 0.1 undecidable manual P 118 39.3273 50 -0.22 92
IV.MTRA.HNZ. 2023-12-28T09:52:38.07 0.3 undecidable manual S 102 18.0708 118 0 75
IV.FEMA.HNN. 2023-12-28T09:52:38.94 0.3 undecidable manual S 331 21.7671 114 -0.27 70
IV.MML1.EHZ. 2023-12-28T09:52:38.55 0.1 positive manual P 335 39.627 50 -0.14 93
IV.PF6.EHZ. 2023-12-28T09:52:38.27 0.1 positive manual P 2 38.5281 50 -0.26 91
IV.CAMP.HHZ. 2023-12-28T09:52:37.70 0.1 undecidable manual P 146 33.9438 50 -0.12 95
IV.MC2.EHE. 2023-12-28T09:52:37.05 0.3 undecidable manual S 3 13.4754 125 0.36 70
IV.RM33.EHZ. 2023-12-28T09:52:37.42 0.1 positive manual P 175 31.3464 50 0 97
IV.CESI.HHZ. 2023-12-28T09:52:37.60 0.1 negative manual P 317 32.6451 50 -0.01 97
IV.GUMA.HHZ. 2023-12-28T09:52:37.81 0.1 undecidable manual P 23 32.745 50 0.17 94
IV.MF5.EHZ. 2023-12-28T09:52:37.72 0.1 positive manual P 46 31.6461 50 0.26 92
IV.CSP1.EHZ. 2023-12-28T09:52:37.58 0.1 positive manual P 4 33.5442 50 -0.17 94
IV.ASCOL.EHE. 2023-12-28T09:52:37.53 0.1 undecidable manual P 78 34.0437 50 -0.31 91
IV.MMO1.EHZ. 2023-12-28T09:52:37.61 0.3 undecidable manual S 45 17.0718 119 -0.14 73
IV.LNSS.HHZ. 2023-12-28T09:52:36.28 0.1 positive manual P 209 23.6541 112 0.19 95
7F.SIB2.EHN. 2023-12-28T09:52:36.94 0.3 undecidable manual S 42 15.0738 122 -0.22 72
IV.GAVE.EHZ. 2023-12-28T09:52:36.56 0.1 positive manual P 245 25.6521 110 0.11 96
IV.FDMO.HHZ. 2023-12-28T09:52:36.64 0.1 positive manual P 345 28.2495 50 -0.31 92
IT.MTCL.HGN. 2023-12-28T09:52:36.51 0.1 undecidable manual P 327 26.8509 110 -0.17 95
7F.SIB1.EHZ. 2023-12-28T09:52:36.75 0.3 undecidable manual S 33 13.7751 125 -0.02 75
IV.SMA1.EHZ. 2023-12-28T09:52:35.88 0.1 undecidable manual P 144 21.867 114 0.13 96
IV.MTRA.HNZ. 2023-12-28T09:52:35.26 0.1 positive manual P 102 18.0708 118 0.19 96
IV.FEMA.HNN. 2023-12-28T09:52:35.71 0.1 undecidable manual P 331 21.7671 114 -0.02 99
7F.SIB3.EHN. 2023-12-28T09:52:35.94 0.3 undecidable manual S 38 11.9769 129 -0.34 70
7F.SIB3.EHN. 2023-12-28T09:52:34.09 0.1 positive manual P 38 11.9769 129 0.05 99
IV.MMO1.EHZ. 2023-12-28T09:52:34.92 0.1 positive manual P 45 17.0718 119 0.04 99
7F.SIB1.EHZ. 2023-12-28T09:52:34.50 0.1 positive manual P 33 13.7751 125 0.18 97
IV.MC2.EHE. 2023-12-28T09:52:34.53 0.1 positive manual P 3 13.4754 125 0.26 95
IV.NRCA.HHZ. 2023-12-28T09:52:34.86 0.3 undecidable manual S 312 7.0929 143 -0.24 72
7F.SIB2.EHN. 2023-12-28T09:52:34.55 0.1 positive manual P 42 15.0738 122 0 100
IV.NRCA.HHZ. 2023-12-28T09:52:33.57 0.1 positive manual P 312 7.0929 143 0.22 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.2 0.0024950000000000003 0.08 AML other m 2023-12-28T09:52:34.94
IV.NRCA.HNE. ML:2.2 0.002445 0.08 AML other m 2023-12-28T09:52:34.95
IV.NRCA.HHN. ML:2.2 0.002245 1.92 AML other m 2023-12-28T09:52:34.99
IV.NRCA.HNN. ML:2.1 0.002075 0.06 AML other m 2023-12-28T09:52:35.00
IV.MMO1.EHN. ML:1.7 0.0004685 1.32 AML other m 2023-12-28T09:52:37.93
IV.MTRA.EHN. ML:1.6 0.00033650000000000005 0.7 AML other m 2023-12-28T09:52:38.63
IV.MMO1.EHE. ML:1.6 0.0003035 0.52 AML other m 2023-12-28T09:52:38.93
IV.MTRA.EHE. ML:1.5 0.000266 0.28 AML other m 2023-12-28T09:52:39.66
IV.LNSS.HHE. ML:1.8 0.0003785 0.16 AML other m 2023-12-28T09:52:40.77
IV.LNSS.HHN. ML:1.7 0.000311 0.2 AML other m 2023-12-28T09:52:40.89
IV.FDMO.HHN. ML:1.3 0.000111 0.92 AML other m 2023-12-28T09:52:41.62
IV.GAVE.EHN. ML:1.9 0.00044999999999999993 0.2 AML other m 2023-12-28T09:52:41.55
IV.GAVE.EHE. ML:1.9 0.000428 1.04 AML other m 2023-12-28T09:52:41.04
IV.FDMO.HHE. ML:1.2 0.00007915 0.8 AML other m 2023-12-28T09:52:42.41
IV.CESI.HHN. ML:1.6 0.0001905 0.36 AML other m 2023-12-28T09:52:42.81
IV.CESI.HHE. ML:1.4 0.0001029 0.22 AML other m 2023-12-28T09:52:42.85
IV.SMA1.EHE. ML:1.3 0.0001275 0.34 AML other m 2023-12-28T09:52:43.25
IV.RM33.EHE. ML:1.7 0.000244 1.08 AML other m 2023-12-28T09:52:43.83
IV.RM33.EHN. ML:1.5 0.000156 0.38 AML other m 2023-12-28T09:52:43.37
IV.CSP1.EHE. ML:1.8 0.000275 0.46 AML other m 2023-12-28T09:52:43.33
IV.SMA1.EHN. ML:1.3 0.00014250000000000002 0.3 AML other m 2023-12-28T09:52:43.91
IV.GUMA.HHN. ML:1.8 0.00029700000000000006 0.56 AML other m 2023-12-28T09:52:44.16
IV.TERO.HHN. ML:1.6 0.0001425 0.1 AML other m 2023-12-28T09:52:44.45
IV.TERO.HHE. ML:1.5 0.0001115 0.14 AML other m 2023-12-28T09:52:44.70
IV.CSP1.EHN. ML:1.8 0.000246 0.46 AML other m 2023-12-28T09:52:44.89
IV.MML1.EHE. ML:1.3 0.00007295 0.32 AML other m 2023-12-28T09:52:45.14
IV.GUMA.HHE. ML:1.8 0.00028349999999999995 0.7 AML other m 2023-12-28T09:52:45.07
IV.MML1.EHN. ML:1.3 0.00006659999999999999 0.8 AML other m 2023-12-28T09:52:46.07
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