Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-04-2023 and time 15:23:46 (UTC) in region 2 km NW Provvidenti (CB)

A magnitude ML 1.3 earthquake occured in region: 2 km NW Provvidenti (CB), on

  • 21-04-2023 15:23:46 (UTC)
  • 21-04-2023 17:23:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7370, 14.8140 at 19 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Provvidenti CB 2 119 119
Casacalenda CB 3 2135 2254
Morrone del Sannio CB 4 587 2841
Ripabottoni CB 5 514 3355
Lupara CB 7 505 3860
Guardialfiera CB 8 1065 4925
Castellino del Biferno CB 8 545 5470
Castelbottaccio CB 9 312 5782
Montorio nei Frentani CB 10 437 6219
Lucito CB 10 696 6915
Bonefro CB 11 1384 8299
Larino CB 11 6793 15092
Petrella Tifernina CB 11 1170 16262
Civitacampomarano CB 11 417 16679
Montelongo CB 11 365 17044
Campolieto CB 12 839 17883
Castelmauro CB 13 1505 19388
San Giuliano di Puglia CB 14 1042 20430
Sant'Elia a Pianisi CB 14 1818 22248
Monacilioni CB 14 523 22771
Santa Croce di Magliano CB 15 4435 27206
Montagano CB 15 1086 28292
Colletorto CB 16 1938 30230
Acquaviva Collecroce CB 16 672 30902
Rotello CB 16 1212 32114
Matrice CB 16 1115 33229
Palata CB 17 1726 34955
Limosano CB 17 768 35723
San Giovanni in Galdo CB 17 580 36303
Macchia Valfortore CB 18 576 36879
Pietracatella CB 18 1375 38254
Sant'Angelo Limosano CB 18 352 38606
Toro CB 18 1391 39997
Montecilfone CB 19 1348 41345
Ripalimosani CB 19 3114 44459
San Biase CB 19 189 44648
Ururi CB 19 2693 47341
San Felice del Molise CB 20 634 47975
Tavenna CB 20 718 48693

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km W of San Severo (53905 inhabitants)
67 Km N of Benevento (60091 inhabitants)
68 Km W of Foggia (151991 inhabitants)
84 Km NE of Caserta (76326 inhabitants)
87 Km SE of Chieti (51815 inhabitants)
91 Km N of Avellino (54857 inhabitants)
93 Km W of Manfredonia (57279 inhabitants)
95 Km SE of Pescara (121014 inhabitants)
95 Km NE of Acerra (59573 inhabitants)
99 Km NE of Aversa (53047 inhabitants)
100 Km NE of Afragola (65057 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
Bulletin
Rev1000 		ML 1.3 2023-04-21
15:23:46		 41.7368 14.8138 19 2024-03-01
17:18:20		 Bollettino Sismico Italiano INGV 125074011
Reviewed
Rev100 		ML 1.3 2023-04-21
15:23:46		 41.7978 14.7817 10 2023-04-21
15:37:54		 Sala Sismica INGV-Roma 116574731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-21 15:23:46 ± 0.51
Latitude 41.7368 ± 0.0450
Longitude 14.8138 ± 0.0422
Depth (km) 19 ± 7 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 125074011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5264
Semi-minor axis of confidence ellipse (meter) 2773
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 5260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 209
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.52
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 125074011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-02-06 14:48:43

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 116574731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-21 15:37:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.BNI.HHZ. 2023-04-21T15:25:14.52 3.0 negative manual Pn 9.52 0
IV.TDS.HHZ. 2023-04-21T15:25:04.46 3.0 undecidable manual Sg 3.43 0
IV.MRLC.HHZ. 2023-04-21T15:24:37.96 3.0 undecidable manual Sg 6.69 0
OX.CIMO.HHZ. 2023-04-21T15:24:30.12 3.0 negative manual Pn -1.13 0
IV.MMN.HHZ. 2023-04-21T15:24:16.86 3.0 negative manual Pn 0.42 0
OT.OT16.EHN. 2023-04-21T15:23:58.94 0.6 undecidable manual S 70 31.4463 111 0.74 48
IV.GATE.HHZ. 2023-04-21T15:23:57.69 0.6 undecidable manual S 162 26.0517 116 0.8 46
IV.BSSO.HHZ. 2023-04-21T15:23:57.81 0.6 undecidable manual S 221 27.9498 114 0.47 49
IV.MELA.HHZ. 2023-04-21T15:23:56.83 0.3 undecidable manual S 97 26.1516 116 -0.08 74
IV.CIGN.HHZ. 2023-04-21T15:23:54.32 0.6 undecidable manual S 141 11.877 142 0.43 54
IV.BSSO.HHZ. 2023-04-21T15:23:53.15 0.3 undecidable manual P 221 27.9498 114 0.18 76
OT.OT16.EHN. 2023-04-21T15:23:53.93 0.3 undecidable manual P 70 31.4463 111 0.47 73
IV.MELA.HHZ. 2023-04-21T15:23:52.46 0.1 undecidable manual P 97 26.1516 116 -0.25 100
IV.GATE.HHZ. 2023-04-21T15:23:52.49 0.3 undecidable manual P 162 26.0517 116 -0.22 77
IV.GUMA.HHZ. 2023-04-21T15:23:51.69 3.0 negative manual P -2.17 0
IV.CIGN.HHZ. 2023-04-21T15:23:49.94 0.1 undecidable manual P 141 11.877 142 -1.03 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CIGN.HHN. ML:1.6 0.0002715 0.46 AML other m 2023-04-21T15:23:56.44
IV.CIGN.HHE. ML:1.7 0.00034199999999999996 0.78 AML other m 2023-04-21T15:23:56.25
IV.MELA.HHE. ML:1.1 0.00005599999999999999 1.14 AML other m 2023-04-21T15:23:57.95
IV.MELA.HHN. ML:1.2 0.00008715 0.52 AML other m 2023-04-21T15:23:57.88
IV.GATE.HHN. ML:1.1 0.000055400000000000005 1.08 AML other m 2023-04-21T15:24:04.17
IV.GATE.HHE. ML:1.2 0.00007970000000000001 0.32 AML other m 2023-04-21T15:24:07.24
IV.SGG.HHE. ML:1.2 0.0000348 0.36 AML other m 2023-04-21T15:24:10.75
IV.SGG.HHN. ML:1.2 0.0000352 1.5 AML other m 2023-04-21T15:24:11.90
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