Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 17-09-2024 and time 15:02:16 (UTC) in region 5 km SW Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 5 km SW Accumoli (RI), on

  • 17-09-2024 15:02:16 (UTC)
  • 17-09-2024 17:02:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6510, 13.2240 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
Accumoli RI 5 667 667
Amatrice RI 6 2657 3324
Cittareale RI 6 482 3806
Montereale AQ 14 2581 6387
Arquata del Tronto AP 15 1178 7565
Capitignano AQ 16 665 8230
Campotosto AQ 16 542 8772
Borbona RI 17 617 9389
Posta RI 18 694 10083
Cascia PG 19 3217 13300
Norcia PG 19 4957 18257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km W of Pescara (121014 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
84 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
95 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
Reviewed
Rev100 		ML 1.1 2024-09-17
15:02:16		 42.651 13.2242 10 2024-09-17
15:09:35		 Sala Sismica INGV-Roma 131522031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-09-17 15:02:16 ± 0.05
Latitude 42.6510 ± 0.0027
Longitude 13.2242 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 131522031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 333
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 151
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
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) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.34444
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 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 131522031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-09-17 15:09:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2024-09-17T15:02:28.91 0.6 undecidable manual S 258 38.2284 50 -0.32 45
IV.MMO1.EHZ. 2024-09-17T15:02:26.89 0.6 undecidable manual S 17 28.749 50 0.19 47
7F.SIB1.EHN. 2024-09-17T15:02:26.68 0.6 undecidable manual S 8 27.2505 50 0.38 46
7F.SIB2.EHN. 2024-09-17T15:02:26.20 0.6 undecidable manual S 14 27.4503 50 -0.13 48
IV.GAVE.HNZ. 2024-09-17T15:02:26.40 0.6 undecidable manual S 280 27.2505 50 0.09 48
7F.SIB3.EHE. 2024-09-17T15:02:25.59 0.6 undecidable manual S 9 25.1526 50 -0.13 48
IV.NRCA.HHZ. 2024-09-17T15:02:24.85 0.1 undecidable manual S 336 22.1556 115 -0.04 99
IV.LNSS.HHZ. 2024-09-17T15:02:23.09 0.6 undecidable manual S 250 15.9729 123 0.09 49
IV.MTRA.HNZ. 2024-09-17T15:02:23.46 0.6 undecidable manual S 50 18.2706 120 -0.24 48
IV.ARRO.EHZ. 2024-09-17T15:02:23.69 1.0 negative manual P 258 38.2284 50 -0.12 24
IV.GAVE.HNZ. 2024-09-17T15:02:22.10 0.1 undecidable manual P 280 27.2505 50 -0.02 98
IV.MMO1.EHZ. 2024-09-17T15:02:22.25 1.0 negative manual P 17 28.749 50 -0.1 24
7F.SIB1.EHN. 2024-09-17T15:02:22.26 0.1 undecidable manual P 8 27.2505 50 0.14 96
7F.SIB2.EHN. 2024-09-17T15:02:22.02 0.1 undecidable manual P 14 27.4503 50 -0.12 97
IV.NRCA.HHZ. 2024-09-17T15:02:21.33 0.1 undecidable manual P 336 22.1556 115 0.03 99
7F.SIB3.EHE. 2024-09-17T15:02:21.76 0.1 undecidable manual P 9 25.1526 50 -0.02 99
IV.SMA1.EHZ. 2024-09-17T15:02:21.21 0.3 undecidable manual S 104 9.3795 138 -0.04 76
IV.LNSS.HHZ. 2024-09-17T15:02:20.25 0.1 undecidable manual P 250 15.9729 123 0.04 100
IV.MTRA.HNZ. 2024-09-17T15:02:20.56 0.1 undecidable manual P 50 18.2706 120 -0.06 99
IV.SMA1.EHZ. 2024-09-17T15:02:19.35 0.1 undecidable manual P 104 9.3795 138 0.15 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.0 0.00006565 1.88 AML other m 2024-09-17T15:02:24.01
IV.NRCA.HHE. ML:1.2 0.00009395000000000001 0.1 AML other m 2024-09-17T15:02:25.15
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