Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 01-02-2024 and time 10:23:46 (UTC) in region 7 km SE Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 7 km SE Norcia (PG), on

  • 01-02-2024 10:23:46 (UTC)
  • 01-02-2024 11:23:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7580, 13.1660 at 8 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
Accumoli RI 10 667 5624
Arquata del Tronto AP 11 1178 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 15 281 10300
Cittareale RI 16 482 10782
Montegallo AP 17 523 11305
Preci PG 17 724 12029
Amatrice RI 17 2657 14686
Poggiodomo PG 20 117 14803

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SE of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
49 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
94 Km W of Chieti (51815 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 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 0.9 2024-02-01
10:23:46		 42.7578 13.1658 8 2024-02-01
10:36:25		 Sala Sismica INGV-Roma 124977431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-01 10:23:46 ± 0.14
Latitude 42.7578 ± 0.0036
Longitude 13.1658 ± 0.0049
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124977431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 414
Semi-minor axis of confidence ellipse (meter) 351
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 112
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.25091
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 124977431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-01 10:36:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
7F.SIB2.EHZ. 2024-02-01T10:23:53.51 0.6 undecidable manual S 37 18.5703 113 -0.15 48
IV.MC2.EHE. 2024-02-01T10:23:53.41 0.6 undecidable manual S 6 17.1717 115 0.2 48
7F.SIB1.EHN. 2024-02-01T10:23:53.32 0.6 undecidable manual S 29 17.3715 114 0.04 49
IV.RM33.EHZ. 2024-02-01T10:23:52.15 1.0 positive manual P 172 27.8499 106 -0.33 23
7F.SIB3.EHZ. 2024-02-01T10:23:52.66 0.6 undecidable manual S 33 15.4734 117 -0.04 50
IV.MTRA.HNN. 2024-02-01T10:23:51.11 0.3 undecidable manual P 90 18.7701 113 0.36 69
IV.GAVE.HNE. 2024-02-01T10:23:51.82 0.3 undecidable manual P 252 23.3544 109 0.22 71
IV.MMO1.EHZ. 2024-02-01T10:23:51.00 0.6 undecidable manual P 40 20.4684 111 -0.05 49
7F.SIB3.EHZ. 2024-02-01T10:23:50.08 0.1 undecidable manual P 33 15.4734 117 -0.08 99
IV.SMA1.EHZ. 2024-02-01T10:23:50.98 0.3 undecidable manual P 136 19.7691 112 0.05 74
7F.SIB1.EHN. 2024-02-01T10:23:50.49 0.1 undecidable manual P 29 17.3715 114 0 100
IV.LNSS.HHZ. 2024-02-01T10:23:50.81 0.1 undecidable manual P 211 20.0688 111 -0.17 96
7F.SIB2.EHZ. 2024-02-01T10:23:50.58 0.1 undecidable manual P 37 18.5703 113 -0.13 97
IV.MC2.EHE. 2024-02-01T10:23:50.41 0.1 undecidable manual P 6 17.1717 115 -0.04 99
IV.NRCA.HHZ. 2024-02-01T10:23:50.86 0.6 undecidable manual S 333 9.3795 130 -0.05 50
IV.NRCA.HHZ. 2024-02-01T10:23:49.17 0.1 undecidable manual P 333 9.3795 130 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.0002535 0.08 AML other m 2024-02-01T10:23:51.06
IV.NRCA.HHN. ML:0.8 0.00010699999999999999 1.34 AML other m 2024-02-01T10:23:51.13
IV.NRCA.HNE. ML:1.2 0.00024037035000000002 0.0832 AML other m 2024-02-01T10:23:51.06
IV.NRCA.HNN. ML:1.0 0.0001347038685 0.3584 AML other m 2024-02-01T10:23:51.13
IV.MMO1.EHE. ML:0.4 0.000018574434999999995 0.1024 AML other m 2024-02-01T10:23:54.95
IV.MMO1.EHN. ML:0.5 0.000024478043 0.0768 AML other m 2024-02-01T10:23:54.39
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