Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 22-03-2023 and time 22:00:39 (Italy) in region 2 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 2 km E Norcia (PG), on

  • 22-03-2023 21:00:39 (UTC)
  • 22-03-2023 22:00:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7950, 13.1230 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 2 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Preci PG 12 724 5962
Cascia PG 12 3217 9179
Arquata del Tronto AP 15 1178 10357
Accumoli RI 15 667 11024
Visso MC 15 1107 12131
Ussita MC 17 444 12575
Cerreto di Spoleto PG 17 1075 13650
Poggiodomo PG 18 117 13767
Montegallo AP 18 523 14290
Sellano PG 19 1079 15369
Cittareale RI 20 482 15851

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
69 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 W of Pescara (121014 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
99 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
Bulletin
Rev1000 		ML 1.3 2023-03-22
21:00:39		 42.795 13.123 9 2024-03-01
17:18:16		 Bollettino Sismico Italiano INGV 121350241
Reviewed
Rev100 		ML 1.4 2023-03-22
21:00:39		 42.8013 13.1237 10 2023-03-22
21:09:11		 Sala Sismica INGV-Roma 115641221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-22 21:00:39 ± 0.04
Latitude 42.7950 ± 0.0018
Longitude 13.1230 ± 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 121350241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 240
Semi-minor axis of confidence ellipse (meter) 222
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.71496
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:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 115641221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-22 21:09:11

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 54
Type of magnitude ML
Reference to an origin 121350241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-09-22 09:27:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2023-03-22T21:01:04.10 1.0 undecidable manual S 349 79.365 50 0.44 20
IV.SSFR.HHZ. 2023-03-22T21:01:03.58 0.6 undecidable manual S 339 76.2681 50 0.73 36
IV.EL6.EHZ. 2023-03-22T21:00:58.50 0.6 undecidable manual S 358 59.2962 50 0.19 44
IV.ATCC.EHZ. 2023-03-22T21:00:58.00 0.6 undecidable manual S 318 58.3971 50 -0.07 45
IV.GIGS.HHZ. 2023-03-22T21:00:56.20 0.6 undecidable manual S 136 52.8027 50 -0.37 43
IV.MOMA.HHZ. 2023-03-22T21:00:55.00 0.6 undecidable manual S 271 45.0216 50 0.5 42
IV.SAP2.EHE. 2023-03-22T21:00:54.15 0.6 undecidable manual S 34 40.3263 50 0.91 36
IV.ASSB.HHZ. 2023-03-22T21:00:54.50 0.6 undecidable manual S 306 46.62 50 -0.44 43
IV.ARVD.HHZ. 2023-03-22T21:00:53.95 0.6 undecidable manual P 349 79.365 50 0.44 40
IV.SSFR.HHZ. 2023-03-22T21:00:53.36 0.6 undecidable manual P 339 76.2681 50 0.31 42
IV.TERO.HHZ. 2023-03-22T21:00:53.90 0.6 undecidable manual S 116 43.623 50 -0.23 45
IV.MML1.EHZ. 2023-03-22T21:00:52.10 0.6 undecidable manual S 341 37.4292 50 -0.36 44
IV.MF5.EHN. 2023-03-22T21:00:52.32 0.6 undecidable manual S 52 34.743 50 0.57 42
IV.RM33.EHZ. 2023-03-22T21:00:51.00 0.3 undecidable manual S 167 32.6451 50 -0.19 69
IV.CSP1.EHZ. 2023-03-22T21:00:51.10 0.3 undecidable manual S 11 33.5442 50 -0.35 67
IV.CAMP.HHE. 2023-03-22T21:00:51.89 0.6 undecidable manual S 141 37.0296 50 -0.48 43
IV.GUMA.HHZ. 2023-03-22T21:00:51.90 0.3 undecidable manual S 30 34.3434 50 0.25 68
IV.EL6.EHZ. 2023-03-22T21:00:50.46 0.3 undecidable manual P 358 59.2962 50 0.04 68
IV.ATCC.EHZ. 2023-03-22T21:00:50.17 0.3 undecidable manual P 318 58.3971 50 -0.11 67
IV.CESI.HNZ. 2023-03-22T21:00:50.10 0.3 undecidable manual S 323 29.2485 50 -0.19 70
IV.FDMO.HHZ. 2023-03-22T21:00:49.00 0.3 undecidable manual S 354 26.9508 109 -0.56 64
IV.GIGS.HHZ. 2023-03-22T21:00:49.04 0.3 undecidable manual P 136 52.8027 50 -0.38 64
IV.ASSB.HHZ. 2023-03-22T21:00:48.28 0.1 undecidable manual P 306 46.62 50 -0.2 90
IV.SMA1.EHZ. 2023-03-22T21:00:48.90 0.3 undecidable manual S 136 25.1526 111 -0.08 72
IV.MTRA.EHZ. 2023-03-22T21:00:48.20 0.6 undecidable manual S 101 22.6551 113 0.03 49
IV.MOMA.HHZ. 2023-03-22T21:00:48.26 0.3 undecidable manual P 271 45.0216 50 0.03 70
IT.MTCL.HGZ. 2023-03-22T21:00:48.20 0.6 undecidable manual S 336 24.2535 111 -0.48 44
IV.GAVE.EHZ. 2023-03-22T21:00:48.10 0.3 undecidable manual S 239 21.867 113 0.19 71
IV.LNSS.HHZ. 2023-03-22T21:00:48.00 0.6 undecidable manual S 198 22.3554 113 -0.07 48
IV.ARRO.EHZ. 2023-03-22T21:00:47.14 0.6 undecidable manual P 231 37.7289 50 0.04 47
IV.SAP2.EHE. 2023-03-22T21:00:47.69 0.6 undecidable manual P 34 40.3263 50 0.19 46
IV.MMO1.EHZ. 2023-03-22T21:00:47.20 0.3 undecidable manual S 55 20.2686 115 -0.19 71
IV.TERO.HHZ. 2023-03-22T21:00:47.68 0.3 undecidable manual P 116 43.623 50 -0.33 66
IV.GUMA.HHZ. 2023-03-22T21:00:46.80 0.1 undecidable manual P 30 34.3434 50 0.22 92
IV.FEMA.HNZ. 2023-03-22T21:00:46.80 0.3 undecidable manual S 342 19.4694 116 -0.36 68
IV.MF5.EHN. 2023-03-22T21:00:46.88 0.3 undecidable manual P 52 34.743 50 0.24 68
7F.SIB1.EHZ. 2023-03-22T21:00:46.30 0.1 undecidable manual S 47 16.2726 120 0.11 97
IV.RM33.EHZ. 2023-03-22T21:00:46.40 0.1 undecidable manual P 167 32.6451 50 0.09 95
IV.MML1.EHZ. 2023-03-22T21:00:46.89 0.1 undecidable manual P 341 37.4292 50 -0.16 92
IV.CSP1.EHZ. 2023-03-22T21:00:46.34 0.1 undecidable manual P 11 33.5442 50 -0.12 94
7F.SIB2.EHZ. 2023-03-22T21:00:46.60 0.1 undecidable manual S 54 18.1707 117 -0.15 96
IV.CAMP.HHE. 2023-03-22T21:00:46.86 0.3 undecidable manual P 141 37.0296 50 -0.14 70
IV.CESI.HNZ. 2023-03-22T21:00:45.68 0.1 undecidable manual P 323 29.2485 50 -0.12 94
IV.SMA1.EHZ. 2023-03-22T21:00:45.10 0.1 undecidable manual P 136 25.1526 111 0.06 96
7F.SIB3.EHZ. 2023-03-22T21:00:45.50 0.3 undecidable manual S 53 14.874 122 -0.27 70
IV.FDMO.HHZ. 2023-03-22T21:00:45.25 0.1 undecidable manual P 354 26.9508 109 -0.12 95
IV.LNSS.HHZ. 2023-03-22T21:00:44.70 0.3 undecidable manual P 198 22.3554 113 0.19 71
IV.FEMA.HNZ. 2023-03-22T21:00:44.28 0.3 undecidable manual P 342 19.4694 116 0.29 69
IV.MTRA.EHZ. 2023-03-22T21:00:44.69 0.1 undecidable manual P 101 22.6551 113 0.11 96
IV.MMO1.EHZ. 2023-03-22T21:00:44.19 0.1 undecidable manual P 55 20.2686 115 0.06 97
IT.MTCL.HGZ. 2023-03-22T21:00:44.80 0.3 undecidable manual P 336 24.2535 111 -0.07 72
IV.GAVE.EHZ. 2023-03-22T21:00:44.62 0.1 undecidable manual P 239 21.867 113 0.19 94
7F.SIB1.EHZ. 2023-03-22T21:00:43.67 0.1 undecidable manual P 47 16.2726 120 0.25 94
7F.SIB3.EHZ. 2023-03-22T21:00:43.33 0.1 undecidable manual P 53 14.874 122 0.14 96
7F.SIB2.EHZ. 2023-03-22T21:00:43.84 0.1 undecidable manual P 54 18.1707 117 0.09 97
IV.NRCA.HHZ. 2023-03-22T21:00:43.20 0.1 undecidable manual S 351 4.2957 155 -0.05 100
IV.NRCA.HHZ. 2023-03-22T21:00:42.04 0.1 undecidable manual P 351 4.2957 155 0.31 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:0.0 0.0047550000000000005 0.16 AML other m 2023-03-22T21:00:43.35
IV.NRCA.HHE. ML:0.0 0.0048973475 0.1408 AML other m 2023-03-22T21:00:43.34
IV.NRCA.HHN. ML:0.0 0.003065 0.08 AML other m 2023-03-22T21:00:43.27
IV.NRCA.HNN. ML:0.0 0.0025153805 0.0896 AML other m 2023-03-22T21:00:43.27
IV.RM33.HNN. ML:2.3 0.0009616461000000001 0.448 AML other m 2023-03-22T21:00:47.65
IV.MML1.HNN. ML:1.6 0.00015236244999999998 1.0144 AML other m 2023-03-22T21:00:48.49
IV.GAVE.EHN. ML:0.0 0.000345 0.22 AML other m 2023-03-22T21:00:48.62
IV.LNSS.HHN. ML:0.0 0.0001465 0.38 AML other m 2023-03-22T21:00:48.75
IV.LNSS.HNN. ML:0.0 0.00014180857 0.384 AML other m 2023-03-22T21:00:48.76
IV.MTRA.HNE. ML:0.0 0.0002688133 1.8208 AML other m 2023-03-22T21:00:48.02
IV.GAVE.HNN. ML:0.0 0.00013164176 0.7552 AML other m 2023-03-22T21:00:48.61
IV.MTRA.HNN. ML:0.0 0.00017748700000000002 1.7824 AML other m 2023-03-22T21:00:48.10
IV.MTRA.EHN. ML:0.0 0.00016172045 1.7824 AML other m 2023-03-22T21:00:48.00
IV.MTRA.EHE. ML:0.0 0.00022469529999999998 0.1792 AML other m 2023-03-22T21:00:49.11
IV.LNSS.HHE. ML:0.0 0.0001502529 0.1152 AML other m 2023-03-22T21:00:49.20
IV.LNSS.HNE. ML:0.0 0.00013492031 0.128 AML other m 2023-03-22T21:00:49.20
IV.GAVE.HNE. ML:0.0 0.00041302095 0.2176 AML other m 2023-03-22T21:00:49.16
IV.GAVE.EHE. ML:0.0 0.000402 0.22 AML other m 2023-03-22T21:00:49.16
IV.FDMO.HHN. ML:0.0 0.00010195 0.18 AML other m 2023-03-22T21:00:49.90
IV.FDMO.HHE. ML:0.0 0.00006537899 0.128 AML other m 2023-03-22T21:00:49.95
IV.MOMA.HNE. ML:1.6 0.0001177357 0.4608 AML other m 2023-03-22T21:00:51.95
IV.SMA1.EHE. ML:0.0 0.0001015226 0.2304 AML other m 2023-03-22T21:00:52.03
IV.RM33.HNE. ML:2.4 0.0011559456 0.3328 AML other m 2023-03-22T21:00:52.38
IV.RM33.EHE. ML:0.0 0.00005665 1.1 AML other m 2023-03-22T21:00:52.81
IV.MML1.EHE. ML:0.0 0.00006225 1.34 AML other m 2023-03-22T21:00:52.91
IV.SMA1.EHN. ML:0.0 0.00009075 0.78 AML other m 2023-03-22T21:00:53.28
IV.MML1.EHN. ML:0.0 0.000047851950000000005 0.192 AML other m 2023-03-22T21:00:53.48
IV.RM33.EHN. ML:0.0 0.000040711782 0.1408 AML other m 2023-03-22T21:00:53.73
IV.MOMA.HHN. ML:0.2 0.000007006977500000001 0.1024 AML other m 2023-03-22T21:00:54.37
IV.TERO.HHE. ML:1.1 0.000040900000000000005 0.32 AML other m 2023-03-22T21:00:54.62
IV.TERO.HHN. ML:1.0 0.00003528199 0.064 AML other m 2023-03-22T21:00:54.52
IV.MML1.HNE. ML:1.4 0.000091651215 0.768 AML other m 2023-03-22T21:00:55.42
IV.ARRO.EHN. ML:1.1 0.000043043955 0.1792 AML other m 2023-03-22T21:00:55.52
IV.ASSB.HHE. ML:1.0 0.000027893279999999998 0.1024 AML other m 2023-03-22T21:00:55.69
IV.MOMA.HHE. ML:1.2 0.00004596492 0.2688 AML other m 2023-03-22T21:00:55.76
IV.ARRO.EHE. ML:1.0 0.00003497338 1.7568 AML other m 2023-03-22T21:00:55.99
IV.GIGS.HHE. ML:0.6 0.0000079626465 0.1408 AML other m 2023-03-22T21:00:56.97
IV.GIGS.HHN. ML:0.3 0.000005841267000000001 1.8592 AML other m 2023-03-22T21:00:56.98
IV.ASSB.HHN. ML:0.9 0.000026919764999999997 0.0768 AML other m 2023-03-22T21:00:57.56
IV.ATCC.HNN. ML:1.7 0.0001091386 1.3216 AML other m 2023-03-22T21:00:59.06
IV.ATCC.EHE. ML:1.0 0.000021362914500000005 0.1664 AML other m 2023-03-22T21:00:59.77
IV.EL6.EHN. ML:1.2 0.000033350005000000005 0.1408 AML other m 2023-03-22T21:00:59.89
IV.EL6.EHE. ML:1.2 0.000037052100000000004 0.1408 AML other m 2023-03-22T21:01:00.19
IV.ATCC.EHN. ML:1.1 0.00002692231 0.2048 AML other m 2023-03-22T21:01:00.04
IV.MOMA.HNN. ML:1.7 0.00015669825999999997 0.8192 AML other m 2023-03-22T21:01:00.00
IV.TERO.HNN. ML:1.7 0.00014813670000000001 0.7168 AML other m 2023-03-22T21:01:02.17
IV.ARVD.HHE. ML:0.9 0.000010450735999999998 0.1152 AML other m 2023-03-22T21:01:05.08
IV.SSFR.HHN. ML:1.2 0.000025217875 0.256 AML other m 2023-03-22T21:01:05.22
IV.TERO.HNE. ML:1.6 0.00011289651 0.6656 AML other m 2023-03-22T21:01:06.62
IV.SSFR.HHE. ML:1.4 0.000034639290000000005 1.7952 AML other m 2023-03-22T21:01:07.03
IV.ATCC.HNE. ML:1.6 0.00009625155499999999 0.64 AML other m 2023-03-22T21:01:12.31
IV.SSFR.HNN. ML:1.9 0.000125226545 0.5632 AML other m 2023-03-22T21:01:12.70
IV.ARVD.HHN. ML:0.6 0.000006152393 0.576 AML other m 2023-03-22T21:01:19.48
IV.SSFR.HNE. ML:2.0 0.00014783449 0.9632 AML other m 2023-03-22T21:01:21.51
IV.GUMA.HHE. ML:0.0 0.00015034629999999998 0.256 AML other m 2023-03-22T21:00:52.63
IV.GUMA.HHN. ML:0.0 0.00014855395 0.3712 AML other m 2023-03-22T21:00:55.20
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