Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 18-01-2024 and time 08:25:44 (Italy) in region 7 km NW Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 7 km NW Arquata del Tronto (AP), on

  • 18-01-2024 07:25:44 (UTC)
  • 18-01-2024 08:25:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8210, 13.2360 at 4 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
Arquata del Tronto AP 7 1178 1178
Montegallo AP 8 523 1701
Castelsantangelo sul Nera MC 11 281 1982
Montemonaco AP 12 604 2586
Norcia PG 12 4957 7543
Accumoli RI 14 667 8210
Acquasanta Terme AP 15 2916 11126
Ussita MC 16 444 11570
Montefortino FM 16 1178 12748
Visso MC 17 1107 13855
Preci PG 17 724 14579
Bolognola MC 19 142 14721

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
54 Km N of L'Aquila (69753 inhabitants)
56 Km NE of Terni (111501 inhabitants)
76 Km E of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
92 Km S of Ancona (100861 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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 1.1 2024-01-18
07:25:44		 42.8213 13.2357 4 2024-01-18
08:59:43		 Sala Sismica INGV-Roma 124715661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-18 07:25:44
Latitude 42.8213
Longitude 13.2357
Depth (km) 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124715661

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.33635
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 124715661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-18 08:59:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2024-01-18T07:25:57.34 0.3 undecidable manual S 126 37.3293 -0.43 0.92
IV.CESI.HHZ. 2024-01-18T07:25:55.87 0.3 undecidable manual S 308 33.8439 -0.66 0.92
IV.MF5.EHZ. 2024-01-18T07:25:54.45 0.3 undecidable manual S 44 25.9518 0.68 0.92
IV.CSP1.EHZ. 2024-01-18T07:25:54.68 0.3 undecidable manual S 356 30.0477 -0.55 0.92
IV.LNSS.HHZ. 2024-01-18T07:25:54.98 0.3 undecidable manual S 214 29.0487 0.14 0.92
IV.TERO.HHZ. 2024-01-18T07:25:51.47 0.3 undecidable manual P 126 37.3293 -0.43 0.92
IV.CSP1.EHZ. 2024-01-18T07:25:50.77 0.3 undecidable manual P 356 30.0477 0.3 0.92
IV.LNSS.HHZ. 2024-01-18T07:25:50.47 0.3 undecidable manual P 214 29.0487 0.22 0.92
IV.CESI.HHZ. 2024-01-18T07:25:50.70 0.3 undecidable manual P 308 33.8439 -0.5 0.92
IV.MF5.EHZ. 2024-01-18T07:25:50.09 0.6 undecidable manual P 44 25.9518 0.44 0.62
IV.MMO1.EHZ. 2024-01-18T07:25:49.06 0.6 undecidable manual S 40 11.3775 0.33 0.62
IV.MC2.EHZ. 2024-01-18T07:25:48.92 0.3 undecidable manual S 340 10.6782 0.42 0.92
IV.NRCA.HHZ. 2024-01-18T07:25:48.31 0.1 undecidable manual S 278 9.9789 0.04 1.23
7F.SIB2.EHZ. 2024-01-18T07:25:47.96 0.1 undecidable manual S 35 9.4794 -0.15 1.23
IV.MMO1.EHZ. 2024-01-18T07:25:47.05 0.1 undecidable manual P 40 11.3775 0.23 1.23
7F.SIB3.EHZ. 2024-01-18T07:25:46.93 0.1 undecidable manual S 25 6.5934 -0.27 1.23
IV.NRCA.HHZ. 2024-01-18T07:25:46.89 0.1 undecidable manual P 278 9.9789 0.33 1.23
IV.MC2.EHZ. 2024-01-18T07:25:46.93 0.3 undecidable manual P 340 10.6782 0.24 0.92
7F.SIB2.EHZ. 2024-01-18T07:25:46.55 0.1 undecidable manual P 35 9.4794 0.08 1.23
7F.SIB3.EHZ. 2024-01-18T07:25:45.84 0.1 undecidable manual P 25 6.5934 -0.12 1.23
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MMO1.EHN. ML:1.2 0.000228 0.3 AML other m 2024-01-18T07:25:50.03
IV.MMO1.EHE. ML:1.1 0.00016849999999999998 1.46 AML other m 2024-01-18T07:25:49.89
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