Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 28-01-2024 and time 04:03:02 (Italy) in region 3 km W Castel Sant'Angelo (RI)

A magnitude ML 1.5 earthquake occured in region: 3 km W Castel Sant'Angelo (RI), on

  • 28-01-2024 03:03:02 (UTC)
  • 28-01-2024 04:03:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4070, 12.9930 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
Cittaducale RI 4 6828 8136
Borgo Velino RI 6 972 9108
Micigliano RI 7 127 9235
Antrodoco RI 7 2588 11823
Concerviano RI 9 291 12114
Cantalice RI 10 2755 14869
Rieti RI 11 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
Borbona RI 17 617 69178
Rivodutri RI 17 1253 70431
Leonessa RI 17 2435 72866
Contigliano RI 19 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 20 714 82236

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 2024-01-28
03:03:02		 42.407 12.9928 9 2024-01-28
03:10:46		 Sala Sismica INGV-Roma 124899431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-28 03:03:02 ± 0.05
Latitude 42.4070 ± 0.0027
Longitude 12.9928 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124899431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 308
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.16637
Epicentral distance of station farthest from the epicenter (degree) 0.43527
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:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 124899431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-28 03:10:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2024-01-28T03:03:18.98 0.6 undecidable manual S 12 48.3183 50 0.3 45
IV.CESX.HHE. 2024-01-28T03:03:16.42 0.6 undecidable manual S 304 40.0266 50 -0.04 48
IV.SMA1.EHZ. 2024-01-28T03:03:15.80 0.6 undecidable manual S 48 37.4292 50 0.04 49
IV.GAVE.HNN. 2024-01-28T03:03:14.48 0.6 undecidable manual S 346 32.6451 50 -0.01 49
IV.NRCA.HHZ. 2024-01-28T03:03:11.84 0.6 negative manual P 12 48.3183 50 -0.17 46
IV.LNSS.HHZ. 2024-01-28T03:03:11.27 0.6 undecidable manual S 10 22.0668 112 0.1 49
IV.FIAM.HHZ. 2024-01-28T03:03:10.01 0.6 undecidable manual S 146 18.4704 116 -0.03 50
IV.SMA1.EHZ. 2024-01-28T03:03:10.31 0.6 positive manual P 48 37.4292 50 -0.01 49
IV.RM33.EHZ. 2024-01-28T03:03:10.86 0.6 undecidable manual S 58 21.3675 113 -0.09 49
IV.CESX.HHE. 2024-01-28T03:03:10.85 0.1 undecidable manual P 304 40.0266 50 0.13 95
IV.GAVE.HNN. 2024-01-28T03:03:09.35 0.1 undecidable manual P 346 32.6451 50 -0.24 94
IV.ARRO.EHE. 2024-01-28T03:03:08.54 0.1 undecidable manual P 316 26.6511 109 0.01 100
IV.LNSS.HHZ. 2024-01-28T03:03:07.63 0.6 undecidable manual P 10 22.0668 112 -0.04 50
IV.FIAM.HHZ. 2024-01-28T03:03:07.08 0.1 undecidable manual P 146 18.4704 116 0.06 100
IV.RM33.EHZ. 2024-01-28T03:03:07.57 0.6 undecidable manual P 58 21.3675 113 0.03 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHE. ML:1.3 0.00016621949999999998 0.3408 AML other m 2024-01-28T03:03:13.32
IV.FIAM.HHN. ML:1.4 0.0002013401 0.4592 AML other m 2024-01-28T03:03:14.52
IV.FIAM.HNE. ML:1.4 0.00020906910000000002 0.3808 AML other m 2024-01-28T03:03:13.32
IV.FIAM.HNN. ML:1.5 0.00024203625 0.4704 AML other m 2024-01-28T03:03:14.52
IV.RM33.EHE. ML:1.5 0.00021796555 0.2208 AML other m 2024-01-28T03:03:12.30
IV.RM33.EHN. ML:1.7 0.0003710551 0.44 AML other m 2024-01-28T03:03:11.59
IV.RM33.HNE. ML:1.6 0.00027933043 0.32 AML other m 2024-01-28T03:03:12.55
IV.RM33.HNN. ML:1.8 0.0004066569 0.4496 AML other m 2024-01-28T03:03:11.60
IV.LNSS.HHE. ML:1.4 0.00016247902 0.1392 AML other m 2024-01-28T03:03:13.39
IV.LNSS.HHN. ML:1.6 0.00024577305 0.3792 AML other m 2024-01-28T03:03:13.21
IV.LNSS.HNN. ML:1.6 0.00028789950000000005 0.3792 AML other m 2024-01-28T03:03:13.21
IV.SMA1.EHE. ML:1.6 0.00013601656499999997 0.2992 AML other m 2024-01-28T03:03:17.17
IV.SMA1.EHN. ML:1.5 0.00012044421 0.5808 AML other m 2024-01-28T03:03:16.41
IV.NRCA.HNE. ML:1.6 0.00012099147500000001 0.6896 AML other m 2024-01-28T03:03:14.58
IV.NRCA.HHE. ML:1.2 0.000042888395 0.1392 AML other m 2024-01-28T03:03:22.41
IV.NRCA.HHN. ML:1.1 0.000037482760000000004 0.1184 AML other m 2024-01-28T03:03:21.27
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