Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-07-2024 and time 19:23:34 (UTC) in region 4 km NW Castel Sant'Angelo (RI)

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

  • 23-07-2024 19:23:34 (UTC)
  • 23-07-2024 21:23:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4160, 12.9890 at 9 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 5 6828 8136
Borgo Velino RI 6 972 9108
Micigliano RI 7 127 9235
Antrodoco RI 8 2588 11823
Cantalice RI 9 2755 14578
Concerviano RI 10 291 14869
Rieti RI 10 47698 62567
Poggio Bustone RI 13 2055 64622
Belmonte in Sabina RI 13 636 65258
Petrella Salto RI 15 1197 66455
Posta RI 15 694 67149
Rivodutri RI 16 1253 68402
Longone Sabino RI 16 597 68999
Borbona RI 16 617 69616
Leonessa RI 16 2435 72051
Rocca Sinibalda RI 17 815 72866
Morro Reatino RI 18 373 73239
Contigliano RI 18 3783 77022
Greccio RI 19 1558 78580
Colli sul Velino RI 20 533 79113
Varco Sabino RI 20 187 79300
Labro RI 20 374 79674
Torricella in Sabina RI 20 1342 81016
Monte San Giovanni in Sabina RI 20 714 81730

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SE of Terni (111501 inhabitants)
34 Km W of L'Aquila (69753 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
53 Km NE of Tivoli (56533 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
65 Km W of Teramo (54892 inhabitants)
71 Km NE of Roma (2864731 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
83 Km N of Velletri (53303 inhabitants)
91 Km SE of Perugia (166134 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
95 Km NE of Fiumicino (78395 inhabitants)
96 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 2024-07-23
19:23:34		 42.4162 12.9892 9 2024-07-23
19:44:57		 Sala Sismica INGV-Roma 130127501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-07-23 19:23:34 ± 0.13
Latitude 42.4162 ± 0.0054
Longitude 12.9892 ± 0.0110
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 130127501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 857
Semi-minor axis of confidence ellipse (meter) 575
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62413
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 130127501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-07-23 19:44:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.CARE.HNZ. 2024-07-23T19:25:29.77 3.0 undecidable manual Sn -2.95 0
MN.CUC.HHZ. 2024-07-23T19:25:14.46 3.0 undecidable manual Sg 11.16 0
XE.T0701.HHZ. 2024-07-23T19:25:13.67 3.0 undecidable manual Sg 6.42 0
IV.IACL.HHZ. 2024-07-23T19:24:43.43 3.0 positive manual Pg 8.58 0
IV.CAAM.HHZ. 2024-07-23T19:24:28.67 3.0 undecidable manual Sg 0.04 0
IV.IMOL.HNZ. 2024-07-23T19:24:15.86 3.0 negative manual Pg 5.21 0
IV.CIMA.HNZ. 2024-07-23T19:24:11.14 3.0 undecidable manual S -0.52 0
IV.ARVD.HHZ. 2024-07-23T19:24:07.52 3.0 undecidable manual S -5.87 0
IV.TOLF.HHZ. 2024-07-23T19:23:59.21 3.0 undecidable manual S -3.53 0
IV.FDMO.HHZ. 2024-07-23T19:23:56.58 0.6 undecidable manual S 7 69.2751 50 1.01 45
IV.FRON.EHZ. 2024-07-23T19:23:55.72 3.0 undecidable manual P -0.89 0
IV.SACS.HHZ. 2024-07-23T19:23:53.71 3.0 undecidable manual P 0.91 0
IV.FDMO.HHZ. 2024-07-23T19:23:46.60 1.0 positive manual P 7 69.2751 50 0.08 30
IV.GAVE.EHZ. 2024-07-23T19:23:45.21 0.6 undecidable manual S 346 31.6461 50 -0.3 62
IV.MOMA.HHN. 2024-07-23T19:23:44.21 1.0 undecidable manual P 322 55.0005 50 -0.1 31
IV.TERO.HHZ. 2024-07-23T19:23:43.96 1.0 positive manual P 65 55.2003 50 -0.39 29
IV.MTRA.HNZ. 2024-07-23T19:23:43.38 1.0 undecidable manual P 41 50.3163 50 -0.22 30
IV.LNSS.HHZ. 2024-07-23T19:23:42.16 0.6 undecidable manual S 11 21.1677 113 0.03 67
IV.FIAM.HHZ. 2024-07-23T19:23:41.79 0.6 undecidable manual S 147 19.4694 115 0.18 65
IV.SMA1.EHZ. 2024-07-23T19:23:41.46 1.0 undecidable manual P 50 36.9297 50 -0.08 32
IV.RM33.EHZ. 2024-07-23T19:23:41.98 0.6 undecidable manual S 61 21.1677 113 -0.15 65
IV.GAVE.EHZ. 2024-07-23T19:23:40.53 0.3 negative manual P 346 31.6461 50 -0.18 95
IV.ARRO.EHZ. 2024-07-23T19:23:39.73 0.6 negative manual P 315 25.752 109 0.11 65
IV.RM33.EHZ. 2024-07-23T19:23:38.83 0.6 negative manual P 61 21.1677 113 0.07 66
IV.LNSS.HHZ. 2024-07-23T19:23:38.73 0.3 undecidable manual P 11 21.1677 113 -0.03 100
IV.FIAM.HHZ. 2024-07-23T19:23:38.40 1.0 undecidable manual P 147 19.4694 115 -0.06 33
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.7 0.00037 0.48 AML other m 2024-07-23T19:23:42.73
IV.RM33.HNE. ML:1.8 0.0004435 0.24 AML other m 2024-07-23T19:23:43.43
IV.RM33.EHE. ML:1.8 0.00044 0.24 AML other m 2024-07-23T19:23:43.43
IV.LNSS.HHN. ML:1.6 0.000317 0.18 AML other m 2024-07-23T19:23:43.83
IV.FIAM.HNN. ML:1.4 0.00021657073 0.41 AML other m 2024-07-23T19:23:43.89
IV.FIAM.HHN. ML:1.4 0.0001955 0.42 AML other m 2024-07-23T19:23:43.90
IV.LNSS.HHE. ML:1.6 0.00026304145000000004 0.28 AML other m 2024-07-23T19:23:44.16
IV.RM33.HNN. ML:1.6 0.0003057725 0.38 AML other m 2024-07-23T19:23:42.72
IV.FIAM.HNE. ML:1.4 0.00021255995 0.78 AML other m 2024-07-23T19:23:47.45
IV.ARRO.EHE. ML:1.1 0.00007682026999999999 0.28 AML other m 2024-07-23T19:23:46.51
IV.FIAM.HHE. ML:1.5 0.0002328153 0.64 AML other m 2024-07-23T19:23:49.01
IV.GAVE.EHN. ML:1.6 0.0001675 0.2 AML other m 2024-07-23T19:23:46.75
IV.GAVE.EHE. ML:1.5 0.00014700000000000002 0.18 AML other m 2024-07-23T19:23:47.02
IV.ARRO.EHN. ML:1.2 0.00009875 0.22 AML other m 2024-07-23T19:23:48.45
IV.SMA1.EHN. ML:1.5 0.000131 0.56 AML other m 2024-07-23T19:23:50.39
IV.NRCA.HHN. ML:1.2 0.0000459 1.22 AML other m 2024-07-23T19:23:52.72
IV.PTQR.HHN. ML:1.0 0.0000246 0.42 AML other m 2024-07-23T19:23:52.58
IV.SMA1.EHE. ML:0.0 0.00014371415 0.64 AML other m 2024-07-23T19:23:53.16
IV.TERO.HHE. ML:0.0 0.000019943435 0.26 AML other m 2024-07-23T19:23:54.39
IV.TERO.HHN. ML:0.0 0.0000292404 0.38 AML other m 2024-07-23T19:23:57.41
IV.FDMO.HHN. ML:0.0 0.000020107975 0.2 AML other m 2024-07-23T19:23:57.70
IV.FDMO.HHE. ML:0.0 0.000020990945 0.28 AML other m 2024-07-23T19:23:57.28
IV.LNSS.HNE. ML:1.5 0.0002485384 0.3 AML other m 2024-07-23T19:23:44.17
IV.LNSS.HNN. ML:1.6 0.00026950410000000003 0.18 AML other m 2024-07-23T19:23:43.83
IV.GAVE.HNE. ML:1.6 0.0001642034 0.22 AML other m 2024-07-23T19:23:47.11
IV.GAVE.HNN. ML:1.5 0.0001441036 0.97 AML other m 2024-07-23T19:23:52.58
IV.TERO.HNE. ML:1.7 0.00011617465 1.28 AML other m 2024-07-23T19:23:48.96
IV.TERO.HNN. ML:1.7 0.00010477112499999999 1.06 AML other m 2024-07-23T19:24:05.44
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