Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 29-04-2023 and time 08:14:31 (UTC) in region 4 km SE Antrodoco (RI)

A magnitude ML 1.3 earthquake occured in region: 4 km SE Antrodoco (RI), on

  • 29-04-2023 08:14:31 (UTC)
  • 29-04-2023 10:14:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3840, 13.1030 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
Antrodoco RI 4 2588 2588
Borgo Velino RI 4 972 3560
Castel Sant'Angelo RI 6 1308 4868
Micigliano RI 9 127 4995
Petrella Salto RI 10 1197 6192
Concerviano RI 12 291 6483
Cittaducale RI 13 6828 13311
Scoppito AQ 13 3727 17038
Cagnano Amiterno AQ 13 1369 18407
Fiamignano RI 13 1413 19820
Borbona RI 15 617 20437
Posta RI 16 694 21131
Barete AQ 17 737 21868
Longone Sabino RI 17 597 22465
Pizzoli AQ 17 4326 26791
Varco Sabino RI 17 187 26978
Marcetelli RI 18 89 27067
Belmonte in Sabina RI 19 636 27703
Cantalice RI 19 2755 30458
Rocca Sinibalda RI 19 815 31273
Tornimparte AQ 19 3187 34460
Montereale AQ 20 2581 37041
Rieti RI 20 47698 84739
Pescorocchiano RI 20 2075 86814

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of L'Aquila (69753 inhabitants)
42 Km E of Terni (111501 inhabitants)
53 Km NE of Guidonia Montecelio (88673 inhabitants)
53 Km NE of Tivoli (56533 inhabitants)
58 Km SW of Teramo (54892 inhabitants)
72 Km SE of Foligno (57155 inhabitants)
75 Km NE of Roma (2864731 inhabitants)
82 Km NE of Velletri (53303 inhabitants)
82 Km E of Viterbo (67173 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
88 Km W of Chieti (51815 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km NE of Pomezia (62966 inhabitants)
95 Km NE of Aprilia (73446 inhabitants)
99 Km NE of Fiumicino (78395 inhabitants)
99 Km SE of Perugia (166134 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 1.3 2023-04-29
08:14:31		 42.3843 13.1033 9 2023-04-29
08:21:30		 Sala Sismica INGV-Roma 116866301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-29 08:14:31 ± 0.11
Latitude 42.3843 ± 0.0063
Longitude 13.1033 ± 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 116866301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 820
Semi-minor axis of confidence ellipse (meter) 606
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57377
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 116866301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-29 08:21:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VITU.HHZ. 2023-04-29T08:15:21.48 3.0 undecidable manual Sn -0.53 0
IV.CPGN.EHZ. 2023-04-29T08:14:59.15 3.0 undecidable manual Pg 1.01 0
IV.CSP1.EHZ. 2023-04-29T08:14:57.59 3.0 undecidable manual Sg 0.21 0
IV.MOMA.HHZ. 2023-04-29T08:14:51.48 0.3 undecidable manual S 317 63.6918 50 0.34 65
IV.NRCA.HHZ. 2023-04-29T08:14:47.15 0.3 undecidable manual S 1 49.8168 50 -0.28 69
IV.SNTG.HHZ. 2023-04-29T08:14:45.95 3.0 undecidable manual P -2.88 0
IV.CESI.HHZ. 2023-04-29T08:14:44.07 3.0 undecidable manual P -0.26 0
IV.ARRO.EHZ. 2023-04-29T08:14:43.18 0.3 undecidable manual S 308 35.0427 50 -0.31 71
IV.MOMA.HHZ. 2023-04-29T08:14:43.13 0.1 undecidable manual P 317 63.6918 50 0.41 86
IV.T0110.HHZ. 2023-04-29T08:14:42.70 3.0 positive manual P 0.59 0
IV.NRCA.HHZ. 2023-04-29T08:14:40.32 0.1 undecidable manual P 1 49.8168 50 -0.25 92
IV.LNSS.HHZ. 2023-04-29T08:14:40.35 0.3 undecidable manual S 348 24.753 110 0 74
IV.GIGS.HHZ. 2023-04-29T08:14:38.69 0.1 undecidable manual P 79 39.2274 50 -0.24 95
IV.CAMP.HHZ. 2023-04-29T08:14:38.25 0.1 undecidable manual P 56 30.1476 107 0.75 80
IV.ARRO.EHZ. 2023-04-29T08:14:38.16 0.1 undecidable manual P 308 35.0427 50 -0.14 97
IV.RM33.EHZ. 2023-04-29T08:14:37.63 0.3 undecidable manual S 33 16.5723 118 -0.1 73
IV.SMA1.EHZ. 2023-04-29T08:14:37.84 0.1 undecidable manual P 35 33.2445 50 -0.18 97
IV.LNSS.HHZ. 2023-04-29T08:14:36.52 0.1 undecidable manual P 348 24.753 110 0.04 100
IV.FIAM.HHZ. 2023-04-29T08:14:36.36 0.3 undecidable manual S 175 12.9759 125 -0.32 72
IV.RM33.EHZ. 2023-04-29T08:14:35.17 0.6 negative manual P 33 16.5723 118 0.19 50
IV.FIAM.HHZ. 2023-04-29T08:14:34.56 0.1 undecidable manual P 175 12.9759 125 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHN. ML:1.5 0.000383 0.26 AML other m 2023-04-29T08:14:37.08
IV.FIAM.HNN. ML:1.5 0.000382 0.56 AML other m 2023-04-29T08:14:37.08
IV.FIAM.HHE. ML:1.5 0.00038950000000000003 0.42 AML other m 2023-04-29T08:14:37.44
IV.FIAM.HNE. ML:1.6 0.0005265 0.44 AML other m 2023-04-29T08:14:37.44
IV.RM33.EHN. ML:1.3 0.000184 1.78 AML other m 2023-04-29T08:14:38.08
IV.RM33.EHE. ML:1.3 0.00019800000000000002 0.3 AML other m 2023-04-29T08:14:38.76
IV.LNSS.HHN. ML:1.3 0.00012245 0.56 AML other m 2023-04-29T08:14:41.78
IV.LNSS.HHE. ML:1.2 0.00010485 0.12 AML other m 2023-04-29T08:14:42.48
IV.CAMP.HHN. ML:0.9 0.00003915 1.18 AML other m 2023-04-29T08:14:42.15
IV.SMA1.EHE. ML:1.2 0.00007505000000000001 1.54 AML other m 2023-04-29T08:14:43.84
IV.CAMP.HHE. ML:0.7 0.0000265 0.3 AML other m 2023-04-29T08:14:43.27
IV.ARRO.EHN. ML:1.2 0.00007045 0.14 AML other m 2023-04-29T08:14:44.86
IV.SMA1.EHN. ML:1.3 0.0000889 1.3 AML other m 2023-04-29T08:14:44.99
IV.ARRO.EHE. ML:1.2 0.0000702 0.12 AML other m 2023-04-29T08:14:46.25
IV.NRCA.HHN. ML:1.3 0.000048100000000000004 1.32 AML other m 2023-04-29T08:14:48.82
IV.NRCA.HHE. ML:1.4 0.00006765 0.14 AML other m 2023-04-29T08:14:49.48
IV.T0110.HHE. ML:1.3 0.0000438 0.48 AML other m 2023-04-29T08:14:53.53
IV.CESI.HHN. ML:1.3 0.00003035 0.34 AML other m 2023-04-29T08:14:55.72
IV.T0110.HHN. ML:1.3 0.000044899999999999994 0.44 AML other m 2023-04-29T08:14:56.87
IV.CESI.HHE. ML:1.1 0.00001825 0.8 AML other m 2023-04-29T08:15:00.07
IV.CPGN.EHN. ML:2.3 0.00008274999999999999 0.42 AML other m 2023-04-29T08:15:02.77
IV.CPGN.EHE. ML:1.9 0.00003245 0.46 AML other m 2023-04-29T08:15:07.89
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