Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-05-2023 and time 19:38:47 (UTC) in region 2 km E Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 2 km E Norcia (PG), on

  • 26-05-2023 19:38:47 (UTC)
  • 26-05-2023 21:38:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7960, 13.1130 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 2 4957 4957
Preci PG 11 724 5681
Castelsantangelo sul Nera MC 12 281 5962
Cascia PG 12 3217 9179
Visso MC 15 1107 10286
Arquata del Tronto AP 15 1178 11464
Accumoli RI 16 667 12131
Cerreto di Spoleto PG 16 1075 13206
Ussita MC 17 444 13650
Poggiodomo PG 17 117 13767
Sellano PG 18 1079 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km W of Pescara (121014 inhabitants)
100 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 1.6 2023-05-26
19:38:47		 42.796 13.1127 10 2023-05-26
19:46:45		 Sala Sismica INGV-Roma 117755011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-26 19:38:47 ± 0.04
Latitude 42.7960 ± 0.0018
Longitude 13.1127 ± 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 117755011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 274
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 44
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) 0.58276
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 23
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 117755011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-26 19:46:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VAGA.HNZ. 2023-05-26T19:39:40.65 3.0 undecidable manual Sg 3.39 0
IV.ARVD.HHZ. 2023-05-26T19:39:12.92 3.0 undecidable manual S -0.26 0
IV.SSFR.HHZ. 2023-05-26T19:39:12.29 3.0 undecidable manual S 0.12 0
IV.CING.HHZ. 2023-05-26T19:39:08.47 0.6 undecidable manual S 6 64.6908 50 0.89 35
IV.ATCC.EHZ. 2023-05-26T19:39:06.50 0.6 undecidable manual S 319 57.6978 50 0.76 38
IV.EL6.EHZ. 2023-05-26T19:39:06.64 0.6 undecidable manual S 359 59.1963 50 0.52 42
IV.FIAM.HHZ. 2023-05-26T19:39:05.93 0.3 undecidable manual S 180 58.5969 50 -0.04 70
IV.ASSB.HHZ. 2023-05-26T19:39:02.56 0.6 undecidable manual S 307 45.9207 50 -0.02 48
IV.MML1.EHZ. 2023-05-26T19:39:00.05 0.6 undecidable manual S 342 37.0296 50 -0.17 47
IV.CSP1.EHZ. 2023-05-26T19:38:59.12 0.6 undecidable manual S 13 33.6441 50 -0.2 47
IV.GUMA.HHZ. 2023-05-26T19:38:59.63 0.6 undecidable manual S 31 34.6431 50 0.05 48
IV.CING.HHZ. 2023-05-26T19:38:59.06 0.3 undecidable manual P 6 64.6908 50 -0.09 68
IV.RM33.EHZ. 2023-05-26T19:38:58.89 0.6 undecidable manual S 165 32.9448 50 -0.22 47
IV.EL6.EHZ. 2023-05-26T19:38:58.29 0.1 undecidable manual P 359 59.1963 50 -0.03 93
IV.ATCC.EHZ. 2023-05-26T19:38:58.62 0.6 undecidable manual P 319 57.6978 50 0.52 42
IV.FIAM.HHZ. 2023-05-26T19:38:58.13 0.6 negative manual P 180 58.5969 50 -0.09 46
IV.SNTG.HHZ. 2023-05-26T19:38:57.43 3.0 negative manual P -0.15 0
IV.MNTT.EHZ. 2023-05-26T19:38:57.75 3.0 undecidable manual P 0.56 0
IV.SMA1.EHZ. 2023-05-26T19:38:57.27 0.6 undecidable manual S 135 25.8519 50 0.05 49
IV.GIGS.HHZ. 2023-05-26T19:38:57.26 3.0 undecidable manual P -0.53 0
IV.OFFI.HHZ. 2023-05-26T19:38:57.72 3.0 negative manual P 0.51 0
IV.CESI.HHZ. 2023-05-26T19:38:57.52 0.6 undecidable manual S 324 28.6491 50 -0.46 45
IV.MTRA.EHZ. 2023-05-26T19:38:56.41 0.6 undecidable manual S 101 23.5542 113 -0.12 48
IT.MTCL.HGZ. 2023-05-26T19:38:56.08 0.6 undecidable manual S 337 23.754 113 -0.54 44
IV.ASSB.HHZ. 2023-05-26T19:38:56.13 0.1 undecidable manual P 307 45.9207 50 -0.14 93
IV.FDMO.HHZ. 2023-05-26T19:38:56.92 0.6 undecidable manual S 356 26.751 50 -0.55 44
IV.LNSS.HHZ. 2023-05-26T19:38:56.06 0.6 undecidable manual S 195 22.2555 114 -0.05 49
IV.MMO1.EHZ. 2023-05-26T19:38:55.66 0.6 undecidable manual S 57 20.868 116 -0.03 50
IV.GAVE.EHZ. 2023-05-26T19:38:55.69 0.6 undecidable manual S 237 21.1677 115 -0.1 49
IV.TERO.HHZ. 2023-05-26T19:38:55.94 3.0 undecidable manual P -0.42 0
IV.FEMA.HNZ. 2023-05-26T19:38:55.09 0.6 undecidable manual S 345 19.0698 118 -0.05 50
IV.MML1.EHZ. 2023-05-26T19:38:54.80 0.6 positive manual P 342 37.0296 50 -0.11 47
7F.SIB2.EHZ. 2023-05-26T19:38:54.97 0.6 undecidable manual S 56 18.7701 118 -0.08 49
IV.ARRO.EHZ. 2023-05-26T19:38:54.89 0.1 undecidable manual P 230 37.1295 50 -0.03 96
IV.CSP1.EHZ. 2023-05-26T19:38:54.27 0.1 undecidable manual P 13 33.6441 50 -0.11 95
IV.RM33.EHZ. 2023-05-26T19:38:54.17 0.3 positive manual P 165 32.9448 50 -0.1 72
IV.GUMA.HHZ. 2023-05-26T19:38:54.78 0.1 positive manual P 31 34.6431 50 0.24 93
IV.CAMP.HHZ. 2023-05-26T19:38:54.93 0.1 undecidable manual P 140 37.629 50 -0.07 96
IV.FDMO.HHZ. 2023-05-26T19:38:53.22 0.1 positive manual P 356 26.751 50 -0.1 97
IV.CESI.HHZ. 2023-05-26T19:38:53.58 0.1 undecidable manual P 324 28.6491 50 -0.04 98
7F.SIB3.EHZ. 2023-05-26T19:38:53.82 0.6 undecidable manual S 56 15.4734 123 -0.25 48
IV.SMA1.EHZ. 2023-05-26T19:38:53.21 0.6 undecidable manual P 135 25.8519 50 0.04 49
IV.GAVE.EHZ. 2023-05-26T19:38:52.49 0.1 undecidable manual P 237 21.1677 115 0.14 97
IV.LNSS.HHZ. 2023-05-26T19:38:52.64 0.1 positive manual P 195 22.2555 114 0.1 98
IV.FEMA.HNZ. 2023-05-26T19:38:52.07 0.1 undecidable manual P 345 19.0698 118 0.09 98
IV.MTRA.EHZ. 2023-05-26T19:38:52.84 0.1 undecidable manual P 101 23.5542 113 0.07 98
IV.MMO1.EHZ. 2023-05-26T19:38:52.28 0.1 undecidable manual P 57 20.868 116 -0.01 100
IT.MTCL.HGZ. 2023-05-26T19:38:52.71 0.1 undecidable manual P 337 23.754 113 -0.12 97
7F.SIB3.EHZ. 2023-05-26T19:38:51.46 0.1 undecidable manual P 56 15.4734 123 0.11 99
7F.SIB2.EHZ. 2023-05-26T19:38:51.93 0.1 undecidable manual P 56 18.7701 118 0.01 100
IV.NRCA.HNZ. 2023-05-26T19:38:51.37 0.6 undecidable manual S 2 4.1958 158 -0.06 51
IV.NRCA.HNZ. 2023-05-26T19:38:50.13 0.1 negative manual P 2 4.1958 158 0.3 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.6 0.007915 0.1 AML other m 2023-05-26T19:38:51.46
IV.NRCA.HNN. ML:2.6 0.0069299999999999995 0.1 AML other m 2023-05-26T19:38:51.46
IV.NRCA.HNE. ML:2.3 0.00362 0.8 AML other m 2023-05-26T19:38:52.51
IV.NRCA.HHE. ML:2.3 0.00374 0.8 AML other m 2023-05-26T19:38:52.51
IV.MMO1.EHN. ML:1.8 0.0005409999999999999 1.36 AML other m 2023-05-26T19:38:55.85
IV.MMO1.EHE. ML:1.8 0.000441 0.18 AML other m 2023-05-26T19:38:56.61
IV.GAVE.EHN. ML:1.9 0.0005685 0.16 AML other m 2023-05-26T19:38:56.77
IV.GAVE.EHE. ML:1.9 0.0005965 0.62 AML other m 2023-05-26T19:38:56.83
IV.LNSS.HHN. ML:2.1 0.0008295 0.16 AML other m 2023-05-26T19:38:56.94
IV.FDMO.HHE. ML:1.6 0.00020999999999999998 0.38 AML other m 2023-05-26T19:38:57.22
IV.LNSS.HHE. ML:2.1 0.000841 0.16 AML other m 2023-05-26T19:38:57.41
IV.FDMO.HHN. ML:1.6 0.00024249999999999999 0.12 AML other m 2023-05-26T19:38:57.58
IV.CESI.HHN. ML:1.4 0.0001425 0.28 AML other m 2023-05-26T19:38:58.24
IV.CESI.HHE. ML:1.3 0.00010025000000000001 0.46 AML other m 2023-05-26T19:38:58.06
IV.RM33.EHE. ML:1.6 0.00019250000000000002 0.14 AML other m 2023-05-26T19:38:59.88
IV.RM33.EHN. ML:1.4 0.0001095 0.48 AML other m 2023-05-26T19:39:00.40
IV.SMA1.EHE. ML:1.6 0.000217 1.14 AML other m 2023-05-26T19:39:00.73
IV.SMA1.EHN. ML:1.6 0.000229 0.44 AML other m 2023-05-26T19:39:00.97
IV.CAMP.HHE. ML:0.9 0.0000318 1.8 AML other m 2023-05-26T19:39:00.09
IV.MML1.EHE. ML:1.4 0.0001055 0.16 AML other m 2023-05-26T19:39:01.09
IV.ARRO.EHE. ML:1.4 0.00008635 0.2 AML other m 2023-05-26T19:39:01.26
IV.MML1.EHN. ML:1.4 0.00010035 0.16 AML other m 2023-05-26T19:39:01.74
IV.ARRO.EHN. ML:1.4 0.00008965000000000001 0.16 AML other m 2023-05-26T19:39:02.17
IV.TERO.HHN. ML:1.6 0.00011300000000000001 0.06 AML other m 2023-05-26T19:39:02.71
IV.TERO.HHE. ML:1.3 0.000055650000000000004 0.48 AML other m 2023-05-26T19:39:02.68
IV.GUMA.HNN. ML:1.8 0.00026749999999999994 0.38 AML other m 2023-05-26T19:39:03.33
IV.GUMA.HHN. ML:1.7 0.000222 1.2 AML other m 2023-05-26T19:39:03.27
IV.ASSB.HHN. ML:1.4 0.00007955000000000001 0.8 AML other m 2023-05-26T19:39:04.46
IV.ASSB.HHE. ML:1.3 0.0000575 0.76 AML other m 2023-05-26T19:39:04.52
IV.GUMA.HHE. ML:1.7 0.00020250000000000002 0.58 AML other m 2023-05-26T19:39:05.13
IV.GUMA.HNE. ML:1.6 0.000174 1.42 AML other m 2023-05-26T19:39:05.86
IV.CAMP.HHN. ML:1.0 0.00003705 1.28 AML other m 2023-05-26T19:39:05.73
IV.MNTT.EHN. ML:2.0 0.00029499999999999996 1.22 AML other m 2023-05-26T19:39:06.90
IV.SNTG.HHN. ML:1.1 0.0000316 0.8 AML other m 2023-05-26T19:39:06.48
IV.SNTG.HHE. ML:1.1 0.00003115 0.12 AML other m 2023-05-26T19:39:06.72
IV.EL6.EHE. ML:1.6 0.00008685 1.38 AML other m 2023-05-26T19:39:07.81
IV.OFFI.HHN. ML:1.6 0.000121 1.08 AML other m 2023-05-26T19:39:07.71
IV.ATCC.EHE. ML:0.0 0.00003935 0.62 AML other m 2023-05-26T19:39:07.79
IV.OFFI.HHE. ML:1.6 0.000112 1.52 AML other m 2023-05-26T19:39:08.87
IV.EL6.EHN. ML:1.6 0.0000862 0.96 AML other m 2023-05-26T19:39:08.65
IV.CING.HHE. ML:1.3 0.0000371 1.2 AML other m 2023-05-26T19:39:09.66
IV.MNTT.EHE. ML:1.8 0.00019250000000000002 0.28 AML other m 2023-05-26T19:39:09.73
IV.CING.HHN. ML:1.3 0.000037099999999999994 0.64 AML other m 2023-05-26T19:39:09.49
IV.ATCC.EHN. ML:0.0 0.00003625 0.42 AML other m 2023-05-26T19:39:12.38
IV.SSFR.HHE. ML:1.5 0.0000516 0.18 AML other m 2023-05-26T19:39:14.23
IV.ARVD.HHN. ML:1.0 0.00001575 0.6 AML other m 2023-05-26T19:39:14.30
IV.SSFR.HHN. ML:1.6 0.00006335000000000001 0.16 AML other m 2023-05-26T19:39:14.23
IV.ARVD.HHE. ML:1.2 0.0000224 1.32 AML other m 2023-05-26T19:39:15.79
IV.MTRA.EHE. ML:1.8 0.00043607030000000004 0.2432 AML other m 2023-05-26T19:38:56.98
IV.MTRA.EHN. ML:1.7 0.00031534980000000003 0.2048 AML other m 2023-05-26T19:38:57.26
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