Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 15-03-2023 and time 11:03:18 (UTC) in region 3 km NW Accumoli (RI)

A magnitude ML 1.3 earthquake occured in region: 3 km NW Accumoli (RI), on

  • 15-03-2023 11:03:18 (UTC)
  • 15-03-2023 12:03:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7110, 13.2220 at 11 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
Accumoli RI 3 667 667
Arquata del Tronto AP 9 1178 1845
Amatrice RI 11 2657 4502
Cittareale RI 12 482 4984
Norcia PG 14 4957 9941
Acquasanta Terme AP 17 2916 12857
Cascia PG 17 3217 16074
Montegallo AP 17 523 16597

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Teramo (54892 inhabitants)
43 Km NW of L'Aquila (69753 inhabitants)
50 Km E of Terni (111501 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 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
Bulletin
Rev1000 		ML 1.3 2023-03-15
11:03:18		 42.7113 13.2223 11 2024-03-01
17:18:02		 Bollettino Sismico Italiano INGV 116108031
Reviewed
Rev100 		ML 1.5 2023-03-15
11:03:18		 42.7158 13.2233 11 2023-03-15
11:18:43		 Sala Sismica INGV-Roma 115389481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-15 11:03:18 ± 0.04
Latitude 42.7113 ± 0.0018
Longitude 13.2223 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116108031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 278
Semi-minor axis of confidence ellipse (meter) 42
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
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) 49
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62413
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 116108031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-06 07:49:21

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 115389481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-15 11:18:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2023-03-15T11:04:14.32 3.0 undecidable manual Sg 7.66 0
IV.SFI.EHZ. 2023-03-15T11:04:08.97 3.0 undecidable manual Sg 3.84 0
IV.SGG.HNZ. 2023-03-15T11:04:07.01 3.0 undecidable manual Sn 1.33 0
IT.GLNS.HNZ. 2023-03-15T11:04:02.90 3.0 undecidable manual Sn -0.53 0
IV.EL6.EHZ. 2023-03-15T11:03:39.65 0.3 undecidable manual S 352 69.2751 90 0.39 63
IV.ASSB.HHN. 2023-03-15T11:03:36.59 0.3 undecidable manual S 309 58.6968 90 0.14 69
IV.MOMA.HNZ. 2023-03-15T11:03:35.50 0.6 undecidable manual S 281 54.1014 90 0.28 45
IV.MML1.EHZ. 2023-03-15T11:03:34.01 0.3 undecidable manual S 336 49.0176 90 0.15 69
IV.INTR.HHZ. 2023-03-15T11:03:33.42 3.0 undecidable manual P -1.49 0
IV.CESI.HHE. 2023-03-15T11:03:31.65 0.6 undecidable manual S 322 41.5251 91 -0.22 46
IV.CSP1.EHZ. 2023-03-15T11:03:31.84 0.3 undecidable manual S 358 42.2244 91 -0.21 69
IV.GIGS.HHZ. 2023-03-15T11:03:31.44 0.3 undecidable manual S 135 40.5261 91 -0.15 70
IV.GUMA.HNN. 2023-03-15T11:03:31.49 0.6 undecidable manual S 13 40.0266 91 0.03 48
IV.FDMO.HHZ. 2023-03-15T11:03:30.53 0.6 undecidable manual S 343 37.7289 91 -0.31 45
IV.MF5.EHZ. 2023-03-15T11:03:30.73 0.3 undecidable manual S 32 36.2415 91 0.28 68
IV.EL6.EHZ. 2023-03-15T11:03:30.39 0.6 undecidable manual P 352 69.2751 90 -0.02 46
IV.ASSB.HHN. 2023-03-15T11:03:29.19 0.6 undecidable manual P 309 58.6968 90 0.4 43
IV.TERO.HHZ. 2023-03-15T11:03:29.32 0.3 undecidable manual S 107 32.6451 91 -0.17 71
IV.FEMA.HNE. 2023-03-15T11:03:28.86 0.6 undecidable manual S 333 31.1466 91 -0.23 47
IV.CAMP.HHZ. 2023-03-15T11:03:27.06 0.3 undecidable manual S 142 24.753 92 -0.32 70
IV.MML1.EHZ. 2023-03-15T11:03:27.37 0.6 undecidable manual P 336 49.0176 90 0.08 47
IV.GAVE.HNZ. 2023-03-15T11:03:27.95 0.3 undecidable manual S 266 26.8509 91 0.01 73
IV.MOMA.HNZ. 2023-03-15T11:03:27.98 0.1 undecidable manual P 281 54.1014 90 -0.1 92
7F.SIB1.EHZ. 2023-03-15T11:03:26.57 0.3 undecidable manual S 11 20.6682 92 0.27 71
IV.RM33.EHZ. 2023-03-15T11:03:26.96 0.3 undecidable manual S 182 22.4553 92 0.19 73
IV.GUMA.HNN. 2023-03-15T11:03:26.12 0.1 undecidable manual P 13 40.0266 91 0.21 93
IV.CESI.HHE. 2023-03-15T11:03:26.10 0.1 undecidable manual P 322 41.5251 91 -0.04 95
IV.CSP1.EHZ. 2023-03-15T11:03:26.06 0.3 undecidable manual P 358 42.2244 91 -0.19 69
7F.SIB2.EHZ. 2023-03-15T11:03:26.17 0.3 undecidable manual S 18 20.9679 92 -0.21 72
IV.MMO1.EHZ. 2023-03-15T11:03:26.77 0.3 undecidable manual S 22 22.5552 92 -0.02 75
IV.FDMO.HHZ. 2023-03-15T11:03:25.41 0.3 undecidable manual P 343 37.7289 91 -0.14 71
IV.MF5.EHZ. 2023-03-15T11:03:25.55 0.3 undecidable manual P 32 36.2415 91 0.23 70
7F.SIB3.EHZ. 2023-03-15T11:03:25.52 0.3 undecidable manual S 12 18.5703 93 -0.22 72
IV.LNSS.HHZ. 2023-03-15T11:03:25.93 0.3 undecidable manual S 231 19.1697 93 0.05 75
IV.GIGS.HHZ. 2023-03-15T11:03:25.57 0.3 undecidable manual P 135 40.5261 91 -0.41 66
IV.NRCA.HHZ. 2023-03-15T11:03:24.81 0.3 undecidable manual S 327 16.1727 96 -0.28 71
IV.SMA1.EHZ. 2023-03-15T11:03:24.45 0.3 undecidable manual S 134 12.876 108 0.22 73
IV.MTRA.HNZ. 2023-03-15T11:03:24.52 0.3 undecidable manual S 70 15.0738 98 -0.28 72
IV.FEMA.HNE. 2023-03-15T11:03:24.87 0.6 undecidable manual P 333 31.1466 91 0.33 46
IV.TERO.HHZ. 2023-03-15T11:03:24.67 0.3 undecidable manual P 107 32.6451 91 -0.1 72
IV.GAVE.HNZ. 2023-03-15T11:03:23.78 0.3 undecidable manual P 266 26.8509 91 -0.09 72
IV.MMO1.EHZ. 2023-03-15T11:03:23.25 0.1 positive manual P 22 22.5552 92 0.04 99
7F.SIB1.EHZ. 2023-03-15T11:03:23.03 0.1 undecidable manual P 11 20.6682 92 0.1 98
IV.RM33.EHZ. 2023-03-15T11:03:23.32 0.1 undecidable manual P 182 22.4553 92 0.12 98
IV.CAMP.HHZ. 2023-03-15T11:03:23.63 0.3 undecidable manual P 142 24.753 92 0.08 74
IV.LNSS.HHZ. 2023-03-15T11:03:22.83 0.3 undecidable manual P 231 19.1697 93 0.14 74
IV.NRCA.HHZ. 2023-03-15T11:03:22.21 0.1 undecidable manual P 327 16.1727 96 -0.02 100
7F.SIB3.EHZ. 2023-03-15T11:03:22.55 0.1 undecidable manual P 12 18.5703 93 -0.05 99
IV.SMA1.EHZ. 2023-03-15T11:03:22.05 0.1 undecidable manual P 134 12.876 108 0.32 95
IV.MTRA.HNZ. 2023-03-15T11:03:22.16 0.3 undecidable manual P 70 15.0738 98 0.1 74
7F.SIB2.EHZ. 2023-03-15T11:03:22.89 0.3 undecidable manual P 18 20.9679 92 -0.09 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.6 0.00028900000000000003 0.24 AML other m 2023-03-15T11:03:26.31
IV.LNSS.HHN. ML:1.5 0.0002475 0.26 AML other m 2023-03-15T11:03:26.36
IV.RM33.EHN. ML:1.5 0.0002215 0.26 AML other m 2023-03-15T11:03:27.26
IV.RM33.EHE. ML:1.4 0.0001715 0.46 AML other m 2023-03-15T11:03:27.75
IV.SMA1.EHN. ML:0.9 0.00008133421999999999 0.4416 AML other m 2023-03-15T11:03:24.96
IV.SMA1.EHE. ML:1.0 0.00010329982 0.16 AML other m 2023-03-15T11:03:25.30
IV.MMO1.EHE. ML:1.2 0.000106612425 1.2992 AML other m 2023-03-15T11:03:26.91
IV.MMO1.EHN. ML:1.2 0.00009462333500000001 2.08 AML other m 2023-03-15T11:03:27.15
IV.TERO.HHE. ML:1.3 0.00009280056 0.5184 AML other m 2023-03-15T11:03:30.20
IV.TERO.HHN. ML:1.4 0.00011323810000000001 2.0032 AML other m 2023-03-15T11:03:29.03
IV.FDMO.HHE. ML:1.2 0.00006077287 2.1184 AML other m 2023-03-15T11:03:30.51
IV.FDMO.HHN. ML:1.2 0.00006303408000000001 2.5792 AML other m 2023-03-15T11:03:31.52
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