Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 09-02-2024 and time 17:41:45 (Italy) in region 4 km N Accumoli (RI)

A magnitude ML 1.8 earthquake occured in region: 4 km N Accumoli (RI), on

  • 09-02-2024 16:41:45 (UTC)
  • 09-02-2024 17:41:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7310, 13.2490 at 12 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 4 667 667
Arquata del Tronto AP 6 1178 1845
Amatrice RI 12 2657 4502
Acquasanta Terme AP 14 2916 7418
Montegallo AP 14 523 7941
Cittareale RI 14 482 8423
Norcia PG 15 4957 13380
Cascia PG 19 3217 16597
Montemonaco AP 20 604 17201
Castelsantangelo sul Nera MC 20 281 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Teramo (54892 inhabitants)
44 Km N of L'Aquila (69753 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
53 Km E of Terni (111501 inhabitants)
78 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
84 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
100 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 1.8 2024-02-09
16:41:45		 42.7307 13.2492 12 2024-02-09
16:57:34		 Sala Sismica INGV-Roma 125172211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-09 16:41:45
Latitude 42.7307
Longitude 13.2492
Depth (km) 12 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125172211

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) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 1.00814
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty
Num. used stations 13
Type of magnitude ML
Reference to an origin 125172211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-09 16:57:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BARO.EHZ. 2024-02-09T16:42:18.76 0.6 undecidable manual S 242 111.8991 -0.09 0.85
IV.FOSV.EHZ. 2024-02-09T16:42:08.88 0.6 undecidable manual S 328 73.6707 -0.43 0.85
IV.CESX.HHZ. 2024-02-09T16:42:02.92 1.0 undecidable manual S 256 55.6998 -1.15 0.15
IV.SNTG.HHZ. 2024-02-09T16:41:57.20 1.0 undecidable manual P 337 62.8926 0.21 0.43
IV.VCEL.EHZ. 2024-02-09T16:41:56.89 0.6 undecidable manual P 127 61.5939 0.12 0.85
IV.RM33.EHZ. 2024-02-09T16:41:55.02 0.1 undecidable manual S 187 24.753 -0.02 1.08
IV.LNSS.HHZ. 2024-02-09T16:41:54.24 0.1 undecidable manual S 231 22.1556 -0.11 1.08
IV.OFFI.HHZ. 2024-02-09T16:41:54.55 0.6 undecidable manual P 57 42.3243 0.87 0.53
IV.CAMP.HHZ. 2024-02-09T16:41:54.86 0.1 undecidable manual S 148 25.2525 -0.32 1.08
IV.CSP1.EHZ. 2024-02-09T16:41:53.29 0.1 undecidable manual P 356 39.8268 0.04 1.7
IV.GIGS.HHZ. 2024-02-09T16:41:53.14 0.3 undecidable manual P 139 40.626 -0.28 0.81
IV.CESI.HHZ. 2024-02-09T16:41:53.53 0.3 undecidable manual P 318 41.4252 -0.01 0.81
IV.MMO1.EHZ. 2024-02-09T16:41:53.48 0.1 undecidable manual S 18 19.7691 -0.21 1.08
IV.FDMO.HHZ. 2024-02-09T16:41:52.56 1.0 undecidable manual P 339 35.9418 -0.08 0.43
IV.NRCA.HHZ. 2024-02-09T16:41:52.32 0.1 undecidable manual S 317 15.873 -0.3 1.08
IV.MF5.EHZ. 2024-02-09T16:41:52.64 0.1 undecidable manual P 30 33.3444 0.35 1.08
IV.MTRA.EHZ. 2024-02-09T16:41:51.52 0.1 undecidable manual S 76 12.3765 -0.17 1.08
IV.TERO.HHZ. 2024-02-09T16:41:51.82 0.1 undecidable manual P 112 31.4463 -0.17 1.08
IV.SMA1.EHZ. 2024-02-09T16:41:51.98 0.1 undecidable manual S 147 13.1757 0.09 1.08
IV.GAVE.EHZ. 2024-02-09T16:41:51.72 0.6 undecidable manual P 262 29.3484 0.05 0.54
IV.RM33.EHZ. 2024-02-09T16:41:51.11 0.1 undecidable manual P 187 24.753 0.15 1.08
ZO.PDN11.EHZ. 2024-02-09T16:41:51.59 0.3 undecidable manual S 300 12.0768 -0.03 0.81
IV.CAMP.HHZ. 2024-02-09T16:41:51.02 0.1 undecidable manual P 148 25.2525 -0.02 1.08
IV.MMO1.EHZ. 2024-02-09T16:41:50.19 0.1 undecidable manual P 18 19.7691 -0.01 1.08
7F.SIB1.EHZ. 2024-02-09T16:41:50.11 0.1 undecidable manual P 5 18.2706 0.14 1.08
IV.LNSS.HHZ. 2024-02-09T16:41:50.75 0.1 undecidable manual P 231 22.1556 0.18 1.08
IV.MC2.EHZ. 2024-02-09T16:41:50.43 0.3 undecidable manual P 347 20.6682 0.09 0.81
ZO.PDN11.EHZ. 2024-02-09T16:41:49.00 0.1 undecidable manual P 300 12.0768 -0.04 1.08
IV.MTRA.EHZ. 2024-02-09T16:41:49.28 0.1 undecidable manual P 76 12.3765 0.2 1.08
7F.SIB2.EHZ. 2024-02-09T16:41:49.95 0.3 undecidable manual P 14 18.3705 -0.03 0.81
IV.SMA1.EHZ. 2024-02-09T16:41:49.48 0.1 undecidable manual P 147 13.1757 0.29 1.08
7F.SIB3.EHZ. 2024-02-09T16:41:49.61 0.1 undecidable manual P 6 16.0728 -0.03 1.08
IV.NRCA.HHZ. 2024-02-09T16:41:49.68 0.1 undecidable manual P 317 15.873 0.08 1.08
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNN. ML:2.2 0.00152 0.16 AML other m 2024-02-09T16:41:51.71
IV.MTRA.HNE. ML:2.1 0.001171 0.48 AML other m 2024-02-09T16:41:52.33
IV.MTRA.EHN. ML:2.2 0.001485 0.14 AML other m 2024-02-09T16:41:51.64
IV.MTRA.EHE. ML:2.1 0.001177 0.46 AML other m 2024-02-09T16:41:52.33
IV.SMA1.EHN. ML:1.7 0.000502 0.32 AML other m 2024-02-09T16:41:52.08
IV.SMA1.EHE. ML:1.6 0.00039949999999999995 0.38 AML other m 2024-02-09T16:41:52.50
IV.NRCA.HNN. ML:2.2 0.001285 0.98 AML other m 2024-02-09T16:41:52.45
IV.NRCA.HNE. ML:2.2 0.001335 0.98 AML other m 2024-02-09T16:41:52.41
IV.NRCA.HHN. ML:2.2 0.001305 0.98 AML other m 2024-02-09T16:41:52.45
IV.NRCA.HHE. ML:2.2 0.00148 0.18 AML other m 2024-02-09T16:41:52.41
IV.MMO1.EHN. ML:1.4 0.0001885 0.06 AML other m 2024-02-09T16:41:53.58
IV.MMO1.EHE. ML:1.3 0.0001475 0.32 AML other m 2024-02-09T16:41:56.62
IV.LNSS.HHN. ML:2.0 0.0006245000000000001 0.18 AML other m 2024-02-09T16:41:54.80
IV.LNSS.HHE. ML:2.0 0.000631 0.24 AML other m 2024-02-09T16:41:54.52
IV.RM33.HNN. ML:2.0 0.0005510000000000001 1.58 AML other m 2024-02-09T16:41:56.06
IV.RM33.HNE. ML:1.8 0.000376 0.9 AML other m 2024-02-09T16:41:55.78
IV.RM33.EHN. ML:1.9 0.0004945 1.58 AML other m 2024-02-09T16:41:55.27
IV.RM33.EHE. ML:1.8 0.0003565 0.42 AML other m 2024-02-09T16:41:55.57
IV.CAMP.HHN. ML:1.6 0.00020500000000000002 0.26 AML other m 2024-02-09T16:41:55.19
IV.CAMP.HHE. ML:1.2 0.000095 1.14 AML other m 2024-02-09T16:41:56.05
IV.TERO.HNN. ML:1.7 0.000222 0.08 AML other m 2024-02-09T16:41:56.78
IV.TERO.HNE. ML:1.5 0.00014485 1.6 AML other m 2024-02-09T16:41:56.51
IV.TERO.HHN. ML:1.7 0.0002 0.1 AML other m 2024-02-09T16:41:56.77
IV.TERO.HHE. ML:1.7 0.0002225 0.08 AML other m 2024-02-09T16:41:56.52
IV.FDMO.HHN. ML:1.5 0.000134 0.22 AML other m 2024-02-09T16:41:58.15
IV.FDMO.HHE. ML:1.5 0.00011899999999999999 1.4 AML other m 2024-02-09T16:41:58.30
IV.CSP1.EHN. ML:1.9 0.000252 0.84 AML other m 2024-02-09T16:42:01.12
IV.CSP1.EHE. ML:2.1 0.000383 1.46 AML other m 2024-02-09T16:42:00.34
IV.CESI.HHN. ML:1.8 0.000222 0.46 AML other m 2024-02-09T16:42:00.06
IV.CESI.HHE. ML:1.6 0.00012985 0.96 AML other m 2024-02-09T16:42:00.56
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