Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 11-04-2024 and time 10:47:21 (Italy) in region 4 km W Castel Sant'Angelo (RI)

A magnitude ML 1.5 earthquake occured in region: 4 km W Castel Sant'Angelo (RI), on

  • 11-04-2024 08:47:21 (UTC)
  • 11-04-2024 10:47:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4070, 12.9900 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
Castel Sant'Angelo RI 4 1308 1308
Cittaducale RI 4 6828 8136
Borgo Velino RI 6 972 9108
Micigliano RI 7 127 9235
Antrodoco RI 8 2588 11823
Concerviano RI 9 291 12114
Cantalice RI 10 2755 14869
Rieti RI 10 47698 62567
Belmonte in Sabina RI 13 636 63203
Poggio Bustone RI 14 2055 65258
Petrella Salto RI 14 1197 66455
Longone Sabino RI 15 597 67052
Rocca Sinibalda RI 16 815 67867
Posta RI 16 694 68561
Rivodutri RI 17 1253 69814
Borbona RI 17 617 70431
Leonessa RI 17 2435 72866
Contigliano RI 18 3783 76649
Varco Sabino RI 19 187 76836
Morro Reatino RI 19 373 77209
Greccio RI 19 1558 78767
Torricella in Sabina RI 19 1342 80109
Fiamignano RI 19 1413 81522
Monte San Giovanni in Sabina RI 19 714 82236
Montenero Sabino RI 20 299 82535

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SE of Terni (111501 inhabitants)
34 Km W of L'Aquila (69753 inhabitants)
50 Km NE of Guidonia Montecelio (88673 inhabitants)
52 Km NE of Tivoli (56533 inhabitants)
65 Km W of Teramo (54892 inhabitants)
66 Km SE of Foligno (57155 inhabitants)
71 Km NE of Roma (2864731 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
82 Km N of Velletri (53303 inhabitants)
91 Km NE of Pomezia (62966 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
94 Km NE of Fiumicino (78395 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
97 Km W 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 1.5 2024-04-11
08:47:21		 42.4067 12.9902 10 2024-04-11
08:57:07		 Sala Sismica INGV-Roma 126641331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-11 08:47:21 ± 0.11
Latitude 42.4067 ± 0.0045
Longitude 12.9902 ± 0.0073
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 126641331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 624
Semi-minor axis of confidence ellipse (meter) 439
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46045
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 126641331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-11 08:57:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SL.LJU.BHZ. 2024-04-11T08:49:14.77 3.0 undecidable manual Sg 6.58 0
IV.SPS2.HHZ. 2024-04-11T08:49:04.02 3.0 undecidable manual Sn -8.02 0
GU.RNCA.HHZ. 2024-04-11T08:48:31.13 3.0 undecidable manual Pg 12.9 0
IV.MRB1.HNZ. 2024-04-11T08:48:25.68 3.0 undecidable manual Sg 3.86 0
IV.MCRV.HHZ. 2024-04-11T08:48:06.32 3.0 undecidable manual Pg 6.45 0
IV.BDI.HHZ. 2024-04-11T08:48:05.70 3.0 undecidable manual Pn 3.69 0
IV.FRON.EHZ. 2024-04-11T08:48:00.57 3.0 undecidable manual S -2.37 0
IV.VVLD.HHZ. 2024-04-11T08:47:43.73 3.0 undecidable manual S -3.86 0
IV.NRCA.HHZ. 2024-04-11T08:47:37.66 0.3 undecidable manual S 12 48.4182 50 0.21 69
IV.MTRA.HNN. 2024-04-11T08:47:37.92 0.6 undecidable manual S 40 51.1155 50 -0.24 45
IV.SMA1.EHZ. 2024-04-11T08:47:34.73 0.3 undecidable manual S 49 37.629 50 0.17 71
IV.VCEL.EHZ. 2024-04-11T08:47:33.94 3.0 negative manual P -0.93 0
IV.GAVE.HNE. 2024-04-11T08:47:32.87 0.3 undecidable manual S 346 32.6451 50 -0.37 69
IV.MTRA.HNN. 2024-04-11T08:47:31.33 0.3 undecidable manual P 40 51.1155 50 0.12 70
IV.NRCA.HHZ. 2024-04-11T08:47:30.89 0.1 undecidable manual P 12 48.4182 50 0.09 94
IV.LNSS.HHZ. 2024-04-11T08:47:30.26 0.3 undecidable manual S 11 22.1556 113 0.17 73
IV.SMA1.EHZ. 2024-04-11T08:47:29.32 0.1 undecidable manual P 49 37.629 50 0.19 94
IV.RM33.EHZ. 2024-04-11T08:47:29.66 0.3 undecidable manual S 58 21.5673 114 -0.25 72
IV.GAVE.HNE. 2024-04-11T08:47:28.09 0.1 undecidable manual P 346 32.6451 50 -0.28 93
IV.FIAM.HHZ. 2024-04-11T08:47:28.65 0.6 undecidable manual S 146 18.5703 117 -0.31 48
IV.ARRO.EHZ. 2024-04-11T08:47:27.45 0.1 undecidable manual P 316 26.5512 110 0.09 98
IV.FIAM.HHZ. 2024-04-11T08:47:26.16 0.3 undecidable manual P 146 18.5703 117 0.26 72
IV.LNSS.HHZ. 2024-04-11T08:47:26.58 0.1 undecidable manual P 11 22.1556 113 0.03 100
IV.RM33.EHZ. 2024-04-11T08:47:26.36 0.1 undecidable manual P 58 21.5673 114 -0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.7 0.0003235 1.62 AML other m 2024-04-11T08:47:29.81
IV.RM33.EHE. ML:1.7 0.0003755 0.4 AML other m 2024-04-11T08:47:30.63
IV.LNSS.HHE. ML:1.5 0.00023099999999999998 0.84 AML other m 2024-04-11T08:47:31.19
IV.LNSS.HHN. ML:1.6 0.000261 0.32 AML other m 2024-04-11T08:47:32.49
IV.FIAM.HHE. ML:1.5 0.0002535 0.46 AML other m 2024-04-11T08:47:33.25
IV.FIAM.HHN. ML:1.5 0.00023700000000000001 0.38 AML other m 2024-04-11T08:47:33.24
IV.SMA1.EHN. ML:1.6 0.000154 1.48 AML other m 2024-04-11T08:47:35.89
IV.ARRO.EHN. ML:1.2 0.0000973 0.46 AML other m 2024-04-11T08:47:35.44
IV.ARRO.EHE. ML:1.1 0.00007315 1 AML other m 2024-04-11T08:47:36.17
IV.VCEL.EHN. ML:2.3 0.000329 0.08 AML other m 2024-04-11T08:47:37.71
IV.VCEL.EHE. ML:2.4 0.00041700000000000005 1.9 AML other m 2024-04-11T08:47:37.04
IV.NRCA.HHE. ML:1.4 0.0000662 0.74 AML other m 2024-04-11T08:47:38.42
IV.NRCA.HHN. ML:1.3 0.0000567 0.12 AML other m 2024-04-11T08:47:39.54
IV.SMA1.EHE. ML:1.6 0.000133 0.9 AML other m 2024-04-11T08:47:39.54
IV.MOMA.HHE. ML:1.5 0.00006254999999999999 0.48 AML other m 2024-04-11T08:47:43.01
IV.MOMA.HHN. ML:1.2 0.00004145 0.76 AML other m 2024-04-11T08:47:46.10
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