Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 09-08-2024 and time 22:42:12 (UTC) in region 7 km W Arquata del Tronto (AP)

A magnitude ML 1.0 earthquake occured in region: 7 km W Arquata del Tronto (AP), on

  • 09-08-2024 22:42:12 (UTC)
  • 10-08-2024 00:42:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7620, 13.2090 at 10 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
Accumoli RI 8 667 1845
Norcia PG 10 4957 6802
Montegallo AP 14 523 7325
Castelsantangelo sul Nera MC 15 281 7606
Amatrice RI 16 2657 10263
Acquasanta Terme AP 17 2916 13179
Cittareale RI 17 482 13661
Cascia PG 17 3217 16878
Montemonaco AP 18 604 17482
Preci PG 19 724 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
46 Km E of Foligno (57155 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
98 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 1.0 2024-08-09
22:42:12		 42.7625 13.2088 10 2024-08-09
22:50:21		 Sala Sismica INGV-Roma 130549481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-08-09 22:42:12 ± 0.07
Latitude 42.7625 ± 0.0027
Longitude 13.2088 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 130549481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 324
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.32196
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 130549481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-08-09 22:50:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2024-08-09T22:42:24.07 0.6 undecidable manual S 116 35.742 50 -0.15 47
IV.LNSS.HNE. 2024-08-09T22:42:20.40 0.6 undecidable manual S 218 22.4553 114 -0.15 48
IV.TERO.HHZ. 2024-08-09T22:42:19.15 0.3 undecidable manual P 116 35.742 50 0.09 71
IV.MMO1.EHZ. 2024-08-09T22:42:19.07 0.3 undecidable manual S 32 17.9709 119 -0.09 73
IV.SMA1.EHZ. 2024-08-09T22:42:19.24 0.6 undecidable manual S 145 17.871 119 0.09 49
IV.MC2.EHE. 2024-08-09T22:42:18.83 0.6 undecidable manual S 354 16.5723 121 0.07 49
7F.SIB2.EHN. 2024-08-09T22:42:18.47 0.3 undecidable manual S 28 16.2726 122 -0.18 72
7F.SIB1.EHN. 2024-08-09T22:42:18.55 0.6 undecidable manual S 19 15.4734 123 0.12 49
IV.MMO1.EHZ. 2024-08-09T22:42:16.09 0.1 positive manual P 32 17.9709 119 -0.05 98
IV.SMA1.EHZ. 2024-08-09T22:42:16.19 0.1 undecidable manual P 145 17.871 119 0.06 98
IV.NRCA.HHZ. 2024-08-09T22:42:16.97 0.3 undecidable manual S 316 10.9779 133 -0.23 72
IV.MC2.EHE. 2024-08-09T22:42:16.08 0.3 undecidable manual P 354 16.5723 121 0.17 72
IV.LNSS.HNE. 2024-08-09T22:42:16.78 0.1 undecidable manual P 218 22.4553 114 -0.16 95
ZO.PDN11.EHN. 2024-08-09T22:42:16.42 0.3 undecidable manual S 288 7.5813 143 0.02 75
7F.SIB1.EHN. 2024-08-09T22:42:15.85 0.3 undecidable manual P 19 15.4734 123 0.14 73
IV.NRCA.HHZ. 2024-08-09T22:42:15.02 0.1 negative manual P 316 10.9779 133 0.02 100
7F.SIB2.EHN. 2024-08-09T22:42:15.76 0.1 undecidable manual P 28 16.2726 122 -0.08 98
ZO.PDN11.EHN. 2024-08-09T22:42:14.91 0.3 undecidable manual P 288 7.5813 143 0.36 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.00014500000000000003 0.1 AML other m 2024-08-09T22:42:17.24
IV.NRCA.HHN. ML:0.9 0.000096 1.04 AML other m 2024-08-09T22:42:17.53
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