Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 29-03-2023 and time 01:08:11 (Italy) in region 2 km SW Montagano (CB)

A magnitude ML 1.4 earthquake occured in region: 2 km SW Montagano (CB), on

  • 28-03-2023 23:08:11 (UTC)
  • 29-03-2023 01:08:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6330, 14.6660 at 27 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 2 1086 1086
Ripalimosani CB 2 3114 4200
Matrice CB 4 1115 5315
Limosano CB 6 768 6083
Petrella Tifernina CB 7 1170 7253
Campobasso CB 8 49431 56684
Oratino CB 8 1641 58325
San Giovanni in Galdo CB 8 580 58905
Campolieto CB 9 839 59744
Sant'Angelo Limosano CB 9 352 60096
Castropignano CB 9 947 61043
Castellino del Biferno CB 10 545 61588
Toro CB 11 1391 62979
Campodipietra CB 11 2570 65549
Fossalto CB 11 1345 66894
San Biase CB 11 189 67083
Ferrazzano CB 11 3344 70427
Lucito CB 11 696 71123
Torella del Sannio CB 12 795 71918
Busso CB 12 1273 73191
Monacilioni CB 12 523 73714
Casalciprano CB 13 564 74278
Mirabello Sannitico CB 13 2180 76458
Morrone del Sannio CB 13 587 77045
Pietracupa CB 13 215 77260
Ripabottoni CB 13 514 77774
Castelbottaccio CB 14 312 78086
Molise CB 14 167 78253
Baranello CB 15 2673 80926
Gildone CB 15 809 81735
Lupara CB 16 505 82240
Provvidenti CB 16 119 82359
Jelsi CB 17 1781 84140
Vinchiaturo CB 17 3324 87464
Civitacampomarano CB 17 417 87881
Sant'Elena Sannita IS 17 275 88156
Duronia CB 17 405 88561
Sant'Elia a Pianisi CB 18 1818 90379
Spinete CB 18 1320 91699
Pietracatella CB 18 1375 93074
Salcito CB 18 683 93757
Colle d'Anchise CB 18 807 94564
Frosolone IS 18 3170 97734
Bagnoli del Trigno IS 19 735 98469
Cercepiccola CB 19 681 99150
Casacalenda CB 19 2135 101285
Trivento CB 19 4730 106015
Cercemaggiore CB 20 3777 109792
San Giuliano del Sannio CB 20 1029 110821

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km N of Benevento (60091 inhabitants)
60 Km W of San Severo (53905 inhabitants)
68 Km NE of Caserta (76326 inhabitants)
75 Km W of Foggia (151991 inhabitants)
80 Km NE of Acerra (59573 inhabitants)
81 Km N of Avellino (54857 inhabitants)
83 Km NE of Aversa (53047 inhabitants)
84 Km NE of Afragola (65057 inhabitants)
87 Km NE of Casoria (77642 inhabitants)
87 Km NE of Giugliano in Campania (122974 inhabitants)
90 Km SE of Chieti (51815 inhabitants)
91 Km NE of Marano di Napoli (59874 inhabitants)
94 Km N of Portici (55274 inhabitants)
95 Km NE of Napoli (974074 inhabitants)
95 Km N of Ercolano (53709 inhabitants)
97 Km N of Torre del Greco (86275 inhabitants)
99 Km N of Scafati (50787 inhabitants)
100 Km NE of Pozzuoli (81661 inhabitants)
100 Km SE of Pescara (121014 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 1.4 2023-03-28
23:08:11		 41.6327 14.6662 27 2024-03-01
17:18:19		 Bollettino Sismico Italiano INGV 124323771
Reviewed
Rev100 		ML 1.4 2023-03-28
23:08:11		 41.6612 14.6613 21 2023-03-28
23:15:12		 Sala Sismica INGV-Roma 115833111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-28 23:08:11 ± 0.15
Latitude 41.6327 ± 0.0063
Longitude 14.6662 ± 0.0060
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124323771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 673
Semi-minor axis of confidence ellipse (meter) 217
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 0.89033
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 124323771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-28 14:08:27

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 115833111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-28 23:15:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2023-03-28T23:08:34.40 0.6 undecidable manual S 304 75.6687 104 -0.04 46
IV.LPEL.HHE. 2023-03-28T23:08:30.67 0.6 undecidable manual S 319 60.8946 108 0.05 47
IV.VAGA.HHZ. 2023-03-28T23:08:27.08 0.6 undecidable manual S 236 43.2234 116 0.84 38
OT.OT16.EHN. 2023-03-28T23:08:27.01 0.6 undecidable manual S 62 47.3193 113 -0.24 46
IV.T0110.HHZ. 2023-03-28T23:08:27.53 0.3 undecidable manual P 312 98.8233 100 -0.6 58
IV.RNI2.HHZ. 2023-03-28T23:08:26.68 0.6 undecidable manual S 281 43.3233 116 0.42 44
IV.MELA.HHZ. 2023-03-28T23:08:25.28 0.3 undecidable manual S 78 39.0276 119 0.03 74
IT.GLNS.HNZ. 2023-03-28T23:08:25.33 0.6 undecidable manual S 34 37.3293 120 0.47 45
IV.INTR.HHZ. 2023-03-28T23:08:24.27 0.1 undecidable manual P 304 75.6687 104 -0.36 87
IT.LRNO.HNZ. 2023-03-28T23:08:23.35 0.6 undecidable manual S 47 28.5492 128 0.45 46
IV.PABO.HHN. 2023-03-28T23:08:22.75 0.6 undecidable manual S 299 26.4513 130 0.27 48
IV.LPEL.HHE. 2023-03-28T23:08:22.16 0.3 undecidable manual P 319 60.8946 108 -0.28 68
IV.SACR.HHZ. 2023-03-28T23:08:22.40 0.3 undecidable manual S 173 26.2515 131 -0.04 75
IV.MOCO.HNE. 2023-03-28T23:08:21.93 0.3 undecidable manual P 125 50.2164 112 1.04 53
IV.CIGN.HHZ. 2023-03-28T23:08:21.21 0.6 undecidable manual S 83 19.9689 139 -0.03 50
IV.GATE.HHZ. 2023-03-28T23:08:21.80 0.6 undecidable manual S 123 24.1536 133 -0.23 48
OT.OT16.EHN. 2023-03-28T23:08:20.14 0.3 undecidable manual P 62 47.3193 113 -0.34 68
IV.RNI2.HHZ. 2023-03-28T23:08:20.04 0.3 undecidable manual P 281 43.3233 116 0.12 71
IV.VAGA.HHZ. 2023-03-28T23:08:20.06 0.3 undecidable manual P 236 43.2234 116 0.16 71
IV.BSSO.HHZ. 2023-03-28T23:08:19.47 0.6 undecidable manual S 212 11.2776 155 -0.51 46
IT.GLNS.HNZ. 2023-03-28T23:08:19.04 0.3 undecidable manual P 34 37.3293 120 -0.07 73
IV.MELA.HHZ. 2023-03-28T23:08:19.26 0.1 undecidable manual P 78 39.0276 119 -0.08 97
IV.SGG.HHN. 2023-03-28T23:08:18.89 0.3 undecidable manual P 221 36.2415 121 -0.07 74
IV.SACR.HHZ. 2023-03-28T23:08:17.78 0.1 undecidable manual P 173 26.2515 131 0.07 100
IV.CIGN.HHZ. 2023-03-28T23:08:17.11 0.3 undecidable manual P 83 19.9689 139 0.09 76
IV.PABO.HHN. 2023-03-28T23:08:17.69 0.3 undecidable manual P 299 26.4513 130 -0.04 76
IV.GATE.HHZ. 2023-03-28T23:08:17.85 0.3 undecidable manual P 123 24.1536 133 0.38 71
IT.LRNO.HNZ. 2023-03-28T23:08:17.85 0.3 undecidable manual P 47 28.5492 128 -0.13 73
IV.BSSO.HHZ. 2023-03-28T23:08:15.92 0.1 positive manual P 212 11.2776 155 -0.37 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BSSO.HHN. ML:1.7 0.00027800000000000004 0.56 AML other m 2023-03-28T23:08:19.63
IV.BSSO.HNE. ML:1.5 0.00016695040999999998 0.2176 AML other m 2023-03-28T23:08:20.00
IV.BSSO.HHE. ML:1.6 0.000205 1.22 AML other m 2023-03-28T23:08:20.61
IV.BSSO.HNN. ML:1.7 0.0002453516 0.3584 AML other m 2023-03-28T23:08:22.49
IV.SACR.HHE. ML:1.3 0.000074680195 1.5392 AML other m 2023-03-28T23:08:23.17
IV.SACR.HNE. ML:1.3 0.000087329815 1.5392 AML other m 2023-03-28T23:08:23.94
IV.SACR.HHN. ML:1.3 0.000067752405 0.192 AML other m 2023-03-28T23:08:23.19
IV.SACR.HNN. ML:1.2 0.00006373581 0.192 AML other m 2023-03-28T23:08:23.19
IV.CIGN.HHN. ML:1.4 0.00011679995999999999 0.4224 AML other m 2023-03-28T23:08:24.42
IV.CIGN.HHE. ML:1.4 0.00010568982500000001 0.6784 AML other m 2023-03-28T23:08:24.12
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