Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 29-03-2023 and time 06:31:35 (Italy) in region 1 km W Montagano (CB)

A magnitude ML 1.6 earthquake occured in region: 1 km W Montagano (CB), on

  • 29-03-2023 04:31:35 (UTC)
  • 29-03-2023 06:31:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6430, 14.6600 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
Montagano CB 1 1086 1086
Ripalimosani CB 4 3114 4200
Limosano CB 5 768 4968
Matrice CB 5 1115 6083
Petrella Tifernina CB 6 1170 7253
Sant'Angelo Limosano CB 7 352 7605
Castropignano CB 9 947 8552
Oratino CB 9 1641 10193
Castellino del Biferno CB 9 545 10738
Campolieto CB 9 839 11577
Campobasso CB 9 49431 61008
San Giovanni in Galdo CB 10 580 61588
San Biase CB 10 189 61777
Fossalto CB 10 1345 63122
Lucito CB 10 696 63818
Torella del Sannio CB 11 795 64613
Toro CB 12 1391 66004
Campodipietra CB 12 2570 68574
Pietracupa CB 12 215 68789
Ferrazzano CB 12 3344 72133
Busso CB 13 1273 73406
Morrone del Sannio CB 13 587 73993
Casalciprano CB 13 564 74557
Castelbottaccio CB 13 312 74869
Monacilioni CB 13 523 75392
Ripabottoni CB 13 514 75906
Molise CB 14 167 76073
Mirabello Sannitico CB 14 2180 78253
Lupara CB 15 505 78758
Baranello CB 15 2673 81431
Civitacampomarano CB 16 417 81848
Provvidenti CB 16 119 81967
Gildone CB 16 809 82776
Duronia CB 17 405 83181
Salcito CB 17 683 83864
Sant'Elena Sannita IS 17 275 84139
Vinchiaturo CB 18 3324 87463
Jelsi CB 18 1781 89244
Spinete CB 18 1320 90564
Frosolone IS 18 3170 93734
Sant'Elia a Pianisi CB 18 1818 95552
Bagnoli del Trigno IS 18 735 96287
Trivento CB 18 4730 101017
Colle d'Anchise CB 19 807 101824
Casacalenda CB 19 2135 103959
Pietracatella CB 19 1375 105334

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km N of Benevento (60091 inhabitants)
60 Km W of San Severo (53905 inhabitants)
69 Km NE of Caserta (76326 inhabitants)
76 Km W of Foggia (151991 inhabitants)
81 Km N of Acerra (59573 inhabitants)
82 Km N of Avellino (54857 inhabitants)
84 Km NE of Aversa (53047 inhabitants)
85 Km NE of Afragola (65057 inhabitants)
88 Km NE of Casoria (77642 inhabitants)
88 Km NE of Giugliano in Campania (122974 inhabitants)
89 Km SE of Chieti (51815 inhabitants)
92 Km NE of Marano di Napoli (59874 inhabitants)
95 Km N of Portici (55274 inhabitants)
96 Km NE of Napoli (974074 inhabitants)
96 Km N of Ercolano (53709 inhabitants)
98 Km N of Torre del Greco (86275 inhabitants)
99 Km SE of Pescara (121014 inhabitants)
100 Km N of Scafati (50787 inhabitants)
100 Km NE of Pozzuoli (81661 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 1.6 2023-03-29
04:31:35		 41.6432 14.6602 19 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116483651
Reviewed
Rev100 		ML 1.5 2023-03-29
04:31:35		 41.6912 14.6713 10 2023-03-29
04:40:44		 Sala Sismica INGV-Roma 115836911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-29 04:31:35 ± 0.13
Latitude 41.6432 ± 0.0063
Longitude 14.6602 ± 0.0060
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116483651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 628
Semi-minor axis of confidence ellipse (meter) 349
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 359
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.69158
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 116483651
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-29 13:50:12

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 115836911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-29 04:40:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHE. 2023-03-29T04:31:57.40 0.6 undecidable manual S 303 74.6697 97 -0.14 44
OT.OT04.EHE. 2023-03-29T04:31:49.12 0.3 undecidable manual P 83 76.7676 97 0.77 54
IV.RNI2.HHZ. 2023-03-29T04:31:49.81 0.6 undecidable manual S 279 42.624 105 0.68 39
IV.MELA.HHZ. 2023-03-29T04:31:48.42 0.3 undecidable manual S 80 39.3273 106 0.14 71
IV.INTR.HHE. 2023-03-29T04:31:47.49 0.3 undecidable manual P 303 74.6697 97 -0.53 61
IV.SGG.HHN. 2023-03-29T04:31:47.34 0.6 undecidable manual S 219 36.8298 108 -0.3 46
IV.SACR.HNN. 2023-03-29T04:31:45.60 0.6 undecidable manual S 172 27.5502 115 0.27 46
IV.GATE.HNE. 2023-03-29T04:31:44.62 1.0 undecidable manual S 125 25.2525 118 -0.17 23
IV.PABO.HHN. 2023-03-29T04:31:44.75 0.6 undecidable manual S 297 25.4523 118 -0.09 48
IV.RNI2.HHZ. 2023-03-29T04:31:43.10 0.3 undecidable manual P 279 42.624 105 -0.07 71
IV.VAGA.HHZ. 2023-03-29T04:31:43.21 0.3 undecidable manual P 235 43.4232 104 -0.09 71
IV.CIGN.HHZ. 2023-03-29T04:31:43.19 0.6 undecidable manual S 86 20.3685 125 -0.47 44
IV.BSSO.HHZ. 2023-03-29T04:31:42.28 0.6 undecidable manual S 207 12.0768 142 0.22 48
IV.SGG.HHN. 2023-03-29T04:31:42.21 0.6 undecidable manual P 219 36.8298 108 -0.1 48
IV.MELA.HHZ. 2023-03-29T04:31:42.41 0.1 undecidable manual P 80 39.3273 106 -0.27 90
IV.PABO.HHN. 2023-03-29T04:31:40.80 0.6 undecidable manual P 297 25.4523 118 0.11 48
IV.GATE.HNE. 2023-03-29T04:31:40.84 0.6 undecidable manual P 125 25.2525 118 0.17 48
IV.SACR.HNN. 2023-03-29T04:31:40.88 0.1 undecidable manual P 172 27.5502 115 -0.1 96
IV.CIGN.HHZ. 2023-03-29T04:31:40.12 0.1 undecidable manual P 86 20.3685 125 0.11 98
IV.BSSO.HHZ. 2023-03-29T04:31:39.07 0.1 undecidable manual P 207 12.0768 142 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.CMP3.EHE.02 ML:1.9 0.00006235 1.52 AML other m 2023-03-29T04:31:35.86
IX.CMP3.EHN.02 ML:2.0 0.000078902645 1.904 AML other m 2023-03-29T04:31:35.96
IV.BSSO.HHE. ML:1.5 0.00022349999999999998 1.54 AML other m 2023-03-29T04:31:43.05
IV.BSSO.HNE. ML:1.5 0.0002123162 1.5584 AML other m 2023-03-29T04:31:43.05
IV.BSSO.HHN. ML:1.4 0.00017354675 0.3584 AML other m 2023-03-29T04:31:43.45
IV.BSSO.HNN. ML:1.4 0.00016631424999999998 0.3392 AML other m 2023-03-29T04:31:43.28
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