Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 31-01-2024 and time 22:22:11 (Italy) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.4 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 31-01-2024 21:22:11 (UTC)
  • 31-01-2024 22:22:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8630, 13.2160 at 9 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
Castelsantangelo sul Nera MC 6 281 281
Montegallo AP 10 523 804
Montemonaco AP 10 604 1408
Ussita MC 11 444 1852
Arquata del Tronto AP 12 1178 3030
Norcia PG 13 4957 7987
Visso MC 13 1107 9094
Montefortino FM 14 1178 10272
Preci PG 14 724 10996
Bolognola MC 15 142 11138
Amandola FM 18 3629 14767
Accumoli RI 19 667 15434
Acquacanina MC 19 121 15555
Acquasanta Terme AP 19 2916 18471
Comunanza AP 19 3166 21637
Fiastra MC 20 559 22196

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km NW of Teramo (54892 inhabitants)
57 Km NE of Terni (111501 inhabitants)
59 Km N of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
88 Km S of Ancona (100861 inhabitants)
93 Km W of Pescara (121014 inhabitants)
97 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 1.4 2024-01-31
21:22:11		 42.863 13.2155 9 2024-01-31
21:26:13		 Sala Sismica INGV-Roma 124970561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-31 21:22:11 ± 0.07
Latitude 42.8630 ± 0.0036
Longitude 13.2155 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124970561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 19
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 272
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37232
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 124970561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-31 21:26:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2024-01-31T21:22:35.99 3.0 undecidable manual S -0.11 0
IV.SSFR.HHZ. 2024-01-31T21:22:35.83 3.0 undecidable manual S 0.03 0
IV.RMP.HHZ. 2024-01-31T21:22:30.34 3.0 negative manual P -0.08 0
IV.TERO.HHZ. 2024-01-31T21:22:25.44 0.6 undecidable manual S 130 41.3253 50 0.07 48
IV.MML1.EHZ. 2024-01-31T21:22:23.47 0.3 undecidable manual S 325 34.1436 50 0.03 73
IV.LNSS.HHZ. 2024-01-31T21:22:23.36 0.6 undecidable manual S 206 32.1456 50 0.44 45
IV.CESI.HHZ. 2024-01-31T21:22:22.46 0.6 undecidable manual S 302 29.748 107 0.3 46
IV.MF5.EHZ. 2024-01-31T21:22:21.03 0.6 undecidable manual S 55 24.1536 110 0.71 41
IV.SMA1.EHZ. 2024-01-31T21:22:21.54 0.6 undecidable manual S 159 27.5502 108 0.11 48
IV.GUMA.HHZ. 2024-01-31T21:22:20.79 0.6 undecidable manual S 24 24.1536 110 0.46 45
IV.ASSB.HHZ. 2024-01-31T21:22:20.79 3.0 undecidable manual P 0.21 0
IV.SNTG.HHZ. 2024-01-31T21:22:20.44 3.0 positive manual P -0.21 0
IV.CSP1.EHZ. 2024-01-31T21:22:20.45 0.6 undecidable manual S 358 25.3524 109 -0.27 47
IV.RM33.EHZ. 2024-01-31T21:22:19.10 1.0 negative manual P 180 39.2274 50 -0.04 24
IV.FDMO.HHZ. 2024-01-31T21:22:19.63 0.6 undecidable manual S 332 21.867 112 0.06 49
IV.TERO.HHZ. 2024-01-31T21:22:19.04 1.0 negative manual P 130 41.3253 50 -0.42 22
IV.LNSS.HHZ. 2024-01-31T21:22:18.06 0.1 undecidable manual P 206 32.1456 50 0.02 98
IV.MML1.EHZ. 2024-01-31T21:22:18.10 0.6 undecidable manual P 325 34.1436 50 -0.24 46
IV.CESI.HHZ. 2024-01-31T21:22:17.42 0.1 undecidable manual P 302 29.748 107 -0.18 95
IV.CSP1.EHZ. 2024-01-31T21:22:16.42 1.0 negative manual P 358 25.3524 109 -0.35 23
IV.GUMA.HHZ. 2024-01-31T21:22:16.66 0.1 undecidable manual P 24 24.1536 110 0.11 97
IV.MF5.EHZ. 2024-01-31T21:22:16.80 0.1 undecidable manual P 55 24.1536 110 0.25 95
IV.SMA1.EHZ. 2024-01-31T21:22:16.94 0.6 undecidable manual P 159 27.5502 108 -0.25 47
IV.FDMO.HHZ. 2024-01-31T21:22:15.89 0.6 negative manual P 332 21.867 112 -0.22 48
IV.NRCA.HHZ. 2024-01-31T21:22:15.76 0.6 undecidable manual S 248 8.88 135 0.03 50
IV.MMO1.EHZ. 2024-01-31T21:22:15.29 0.6 undecidable manual S 66 9.879 132 -0.71 43
IV.MMO1.EHZ. 2024-01-31T21:22:13.77 0.1 negative manual P 66 9.879 132 -0.27 97
IV.NRCA.HHZ. 2024-01-31T21:22:13.96 0.1 positive manual P 248 8.88 135 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.8 0.0008575 1.88 AML other m 2024-01-31T21:22:16.02
IV.NRCA.HHE. ML:1.8 0.000911 1.4 AML other m 2024-01-31T21:22:16.02
IV.NRCA.HHN. ML:2.0 0.00158 0.12 AML other m 2024-01-31T21:22:16.12
IV.NRCA.HNN. ML:2.0 0.0014449999999999999 0.12 AML other m 2024-01-31T21:22:16.12
IV.MMO1.EHE. ML:1.4 0.0003125 0.3 AML other m 2024-01-31T21:22:17.39
IV.MMO1.EHN. ML:1.4 0.000304 0.98 AML other m 2024-01-31T21:22:17.26
IV.FDMO.HHE. ML:1.1 0.00008525000000000001 0.64 AML other m 2024-01-31T21:22:20.35
IV.FDMO.HHN. ML:1.2 0.00009955 1.32 AML other m 2024-01-31T21:22:20.23
IV.GUMA.HHN. ML:1.7 0.00032250000000000003 0.56 AML other m 2024-01-31T21:22:21.17
IV.MF5.EHE. ML:1.1 0.0000745 0.42 AML other m 2024-01-31T21:22:21.46
IV.GUMA.HHE. ML:1.7 0.000307 0.28 AML other m 2024-01-31T21:22:21.42
IV.MF5.EHN. ML:1.0 0.00006203500000000001 1.44 AML other m 2024-01-31T21:22:21.94
IV.CESI.HHN. ML:1.4 0.00010865 0.46 AML other m 2024-01-31T21:22:23.23
IV.LNSS.HHN. ML:1.3 0.00008285000000000001 0.5 AML other m 2024-01-31T21:22:23.77
IV.CESI.HHE. ML:1.2 0.0000715 0.46 AML other m 2024-01-31T21:22:23.90
IV.LNSS.HHE. ML:1.2 0.00008155000000000002 0.82 AML other m 2024-01-31T21:22:24.55
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