Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 12-02-2024 and time 22:31:33 (UTC) in region 3 km NW Castel Sant'Angelo (RI)

A magnitude ML 1.0 earthquake occured in region: 3 km NW Castel Sant'Angelo (RI), on

  • 12-02-2024 22:31:33 (UTC)
  • 12-02-2024 23:31:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4100, 13.0010 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 3 1308 1308
Borgo Velino RI 5 972 2280
Cittaducale RI 5 6828 9108
Micigliano RI 7 127 9235
Antrodoco RI 7 2588 11823
Concerviano RI 10 291 12114
Cantalice RI 10 2755 14869
Rieti RI 11 47698 62567
Belmonte in Sabina RI 13 636 63203
Petrella Salto RI 14 1197 64400
Poggio Bustone RI 14 2055 66455
Posta RI 15 694 67149
Longone Sabino RI 15 597 67746
Borbona RI 16 617 68363
Rocca Sinibalda RI 16 815 69178
Rivodutri RI 17 1253 70431
Leonessa RI 17 2435 72866
Morro Reatino RI 19 373 73239
Varco Sabino RI 19 187 73426
Fiamignano RI 19 1413 74839
Contigliano RI 19 3783 78622
Cagnano Amiterno AQ 19 1369 79991
Greccio RI 20 1558 81549
Torricella in Sabina RI 20 1342 82891

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of L'Aquila (69753 inhabitants)
34 Km SE of Terni (111501 inhabitants)
51 Km NE of Guidonia Montecelio (88673 inhabitants)
52 Km NE of Tivoli (56533 inhabitants)
64 Km W of Teramo (54892 inhabitants)
65 Km SE of Foligno (57155 inhabitants)
72 Km NE of Roma (2864731 inhabitants)
74 Km E of Viterbo (67173 inhabitants)
82 Km N of Velletri (53303 inhabitants)
92 Km NE of Pomezia (62966 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
95 Km NE of Fiumicino (78395 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
96 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 1.0 2024-02-12
22:31:33		 42.41 13.0007 9 2024-02-12
22:47:22		 Sala Sismica INGV-Roma 125244971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-12 22:31:33 ± 0.13
Latitude 42.4100 ± 0.0054
Longitude 13.0007 ± 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 125244971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 849
Semi-minor axis of confidence ellipse (meter) 643
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 95
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.16548
Epicentral distance of station farthest from the epicenter (degree) 0.67989
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 125244971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-12 22:47:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2024-02-12T22:31:49.04 0.6 undecidable manual S 11 47.9187 50 0.31 44
IV.SMA1.EHZ. 2024-02-12T22:31:46.00 0.6 undecidable manual S 48 36.741 50 0.25 44
IV.ASSB.HHZ. 2024-02-12T22:31:46.50 0.6 undecidable manual P 338 75.4689 50 0.15 44
IV.GAVE.HNZ. 2024-02-12T22:31:44.30 0.1 undecidable manual S 344 32.5452 50 -0.33 93
IV.ARRO.EHZ. 2024-02-12T22:31:43.76 0.3 undecidable manual S 314 26.8509 109 0.89 63
IV.NRCA.HHZ. 2024-02-12T22:31:42.07 0.6 positive manual P 11 47.9187 50 -0.03 47
IV.LNSS.HHZ. 2024-02-12T22:31:41.31 0.3 undecidable manual S 9 21.6672 113 0.15 74
IV.FIAM.HHZ. 2024-02-12T22:31:40.19 0.3 undecidable manual S 149 18.3705 116 0.04 75
IV.SMA1.EHZ. 2024-02-12T22:31:40.24 0.1 undecidable manual P 48 36.741 50 -0.13 98
IV.RM33.EHZ. 2024-02-12T22:31:40.88 0.1 undecidable manual S 58 20.6682 114 0.03 100
IV.GAVE.HNZ. 2024-02-12T22:31:39.38 0.1 undecidable manual P 344 32.5452 50 -0.34 92
IV.ARRO.EHZ. 2024-02-12T22:31:38.78 0.6 negative manual P 314 26.8509 109 0.07 49
IV.FIAM.HHZ. 2024-02-12T22:31:37.15 0.3 positive manual P 149 18.3705 116 0.01 76
IV.LNSS.HHZ. 2024-02-12T22:31:37.55 0.1 undecidable manual P 9 21.6672 113 -0.18 94
IV.RM33.EHZ. 2024-02-12T22:31:37.65 0.6 positive manual P 58 20.6682 114 0.1 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:1.2 0.0001102 0.66 AML other m 2024-02-12T22:31:41.63
IV.FIAM.HHN. ML:0.9 0.0000667 1.52 AML other m 2024-02-12T22:31:41.15
IV.RM33.EHE. ML:1.0 0.00007676134500000001 0.2688 AML other m 2024-02-12T22:31:42.05
IV.LNSS.HHE. ML:0.9 0.000051015815 0.1536 AML other m 2024-02-12T22:31:43.26
IV.LNSS.HHN. ML:1.0 0.00006741026 0.384 AML other m 2024-02-12T22:31:44.84
IV.FIAM.HHE. ML:0.9 0.000058626829999999994 0.2944 AML other m 2024-02-12T22:31:41.82
IV.FIAM.HNE. ML:1.0 0.00007983083 0.3968 AML other m 2024-02-12T22:31:40.78
IV.LNSS.HNN. ML:1.2 0.00012739365 0.7296 AML other m 2024-02-12T22:31:41.20
IV.RM33.HNE. ML:1.2 0.0001316496 0.3712 AML other m 2024-02-12T22:31:42.22
IV.RM33.HNN. ML:1.2 0.00011198959999999999 0.3712 AML other m 2024-02-12T22:31:41.04
IV.ARRO.EHE. ML:0.7 0.00002944395 0.2432 AML other m 2024-02-12T22:31:44.22
IV.ARRO.EHN. ML:0.7 0.000024364249999999996 0.2816 AML other m 2024-02-12T22:31:47.77
IV.SMA1.EHE. ML:0.9 0.000030640205 0.2944 AML other m 2024-02-12T22:31:47.06
IV.SMA1.EHN. ML:0.9 0.000032193355 0.4352 AML other m 2024-02-12T22:31:45.92
IV.NRCA.HHE. ML:0.9 0.000020008680000000002 0.1664 AML other m 2024-02-12T22:31:50.21
IV.NRCA.HHN. ML:0.7 0.000016732535 0.1024 AML other m 2024-02-12T22:31:50.16
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