Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 06-04-2023 and time 22:36:12 (Italy) in region 1 km SW Montagano (CB)

A magnitude ML 1.8 earthquake occured in region: 1 km SW Montagano (CB), on

  • 06-04-2023 20:36:12 (UTC)
  • 06-04-2023 22:36:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6410, 14.6630 at 24 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 3 3114 4200
Matrice CB 5 1115 5315
Limosano CB 5 768 6083
Petrella Tifernina CB 6 1170 7253
Sant'Angelo Limosano CB 8 352 7605
Campolieto CB 9 839 8444
Castropignano CB 9 947 9391
Oratino CB 9 1641 11032
Castellino del Biferno CB 9 545 11577
San Giovanni in Galdo CB 9 580 12157
Campobasso CB 9 49431 61588
San Biase CB 10 189 61777
Fossalto CB 10 1345 63122
Lucito CB 11 696 63818
Toro CB 11 1391 65209
Campodipietra CB 12 2570 67779
Torella del Sannio CB 12 795 68574
Ferrazzano CB 12 3344 71918
Pietracupa CB 13 215 72133
Busso CB 13 1273 73406
Morrone del Sannio CB 13 587 73993
Monacilioni CB 13 523 74516
Casalciprano CB 13 564 75080
Castelbottaccio CB 13 312 75392
Ripabottoni CB 13 514 75906
Mirabello Sannitico CB 14 2180 78086
Molise CB 14 167 78253
Lupara CB 15 505 78758
Baranello CB 15 2673 81431
Civitacampomarano CB 16 417 81848
Gildone CB 16 809 82657
Provvidenti CB 16 119 82776
Duronia CB 17 405 83181
Sant'Elena Sannita IS 17 275 83456
Salcito CB 17 683 84139
Vinchiaturo CB 18 3324 87463
Jelsi CB 18 1781 89244
Sant'Elia a Pianisi CB 18 1818 91062
Spinete CB 18 1320 92382
Frosolone IS 18 3170 95552
Bagnoli del Trigno IS 18 735 96287
Trivento CB 19 4730 101017
Pietracatella CB 19 1375 102392
Colle d'Anchise CB 19 807 103199
Casacalenda CB 19 2135 105334
Cercepiccola CB 20 681 106015

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 NE of Acerra (59573 inhabitants)
82 Km N of Avellino (54857 inhabitants)
83 Km NE of Aversa (53047 inhabitants)
85 Km NE of Afragola (65057 inhabitants)
87 Km NE of Casoria (77642 inhabitants)
88 Km NE of Giugliano in Campania (122974 inhabitants)
89 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)
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 1.8 2023-04-06
20:36:12		 41.6407 14.6632 24 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116697391
Reviewed
Rev100 		ML 1.8 2023-04-06
20:36:13		 41.6465 14.6723 23 2023-04-06
20:42:24		 Sala Sismica INGV-Roma 116123001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-06 20:36:12 ± 0.11
Latitude 41.6407 ± 0.0054
Longitude 14.6632 ± 0.0060
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116697391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 546
Semi-minor axis of confidence ellipse (meter) 281
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 323
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.88403
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 116697391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-11 14:40:39

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 33
Type of magnitude ML
Reference to an origin 116123001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-06 20:42:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2023-04-06T20:36:36.14 0.6 undecidable manual S 304 74.9694 102 0.33 42
IV.LPEL.HHZ. 2023-04-06T20:36:32.32 0.6 undecidable manual S 319 59.9955 105 0.4 43
IV.T0110.HHZ. 2023-04-06T20:36:28.99 0.3 undecidable manual P 312 98.124 99 -0.66 55
OT.OT16.EHN. 2023-04-06T20:36:28.55 0.6 undecidable manual S 63 47.1195 110 -0.11 47
IV.SGRT.HHZ. 2023-04-06T20:36:28.43 0.3 undecidable manual P 82 90.3429 100 -0.05 65
IV.MELA.HHZ. 2023-04-06T20:36:26.84 0.3 undecidable manual S 79 39.1275 115 0.17 70
OT.OT05.EHZ. 2023-04-06T20:36:26.26 1.0 undecidable manual P 88 77.8665 101 -0.33 21
IT.GLNS.HNZ. 2023-04-06T20:36:26.72 0.6 undecidable manual S 35 36.741 117 0.61 41
IT.MCLF.HNE. 2023-04-06T20:36:25.26 0.6 undecidable manual S 26 32.3454 120 0.19 47
IV.INTR.HHZ. 2023-04-06T20:36:25.82 0.1 undecidable manual P 304 74.9694 102 -0.33 84
IV.APRC.HHZ. 2023-04-06T20:36:25.52 0.3 undecidable manual P 80 74.0703 102 -0.48 61
IV.SACR.HHZ. 2023-04-06T20:36:24.07 0.3 undecidable manual S 173 27.2505 126 0.15 72
IV.PTRJ.HHZ. 2023-04-06T20:36:24.62 0.6 undecidable manual S 200 32.6451 120 -0.52 43
IT.PLTA.HNZ. 2023-04-06T20:36:24.31 0.6 undecidable manual S 21 29.1486 124 -0.05 49
IV.MOCO.HHZ. 2023-04-06T20:36:23.52 0.3 undecidable manual P 126 50.9157 109 0.96 53
IV.PABO.HHZ. 2023-04-06T20:36:23.99 0.6 undecidable manual S 298 25.8519 127 0.37 46
IV.LPEL.HHZ. 2023-04-06T20:36:23.71 0.1 undecidable manual P 319 59.9955 105 -0.2 89
IV.CERA.HHZ. 2023-04-06T20:36:23.11 0.3 undecidable manual P 265 53.7018 108 0.14 69
IV.GATE.HHZ. 2023-04-06T20:36:22.91 0.6 undecidable manual S 125 24.8529 129 -0.53 44
OT.OT16.EHN. 2023-04-06T20:36:21.72 0.1 undecidable manual P 63 47.1195 110 -0.3 89
IV.VAGA.HHZ. 2023-04-06T20:36:21.61 0.1 undecidable manual P 235 43.5231 112 0.11 94
IV.CIGN.HHZ. 2023-04-06T20:36:21.66 0.6 undecidable manual S 86 20.0688 135 -0.82 39
IV.MELA.HHZ. 2023-04-06T20:36:20.85 0.1 positive manual P 79 39.1275 115 -0.03 96
IV.BSSO.HHZ. 2023-04-06T20:36:20.83 0.6 undecidable manual S 209 11.9769 151 -0.34 47
IV.SGG.HHZ. 2023-04-06T20:36:20.57 0.1 positive manual P 220 36.741 117 0.02 97
IT.GLNS.HNZ. 2023-04-06T20:36:20.64 0.3 undecidable manual P 35 36.741 117 0.09 71
IV.SACR.HHZ. 2023-04-06T20:36:19.46 0.1 negative manual P 173 27.2505 126 0.17 96
IT.LRNO.HNZ. 2023-04-06T20:36:19.36 0.3 undecidable manual P 49 28.1496 125 -0.05 73
IT.MCLF.HNE. 2023-04-06T20:36:19.88 0.3 undecidable manual P 26 32.3454 120 -0.07 72
IV.GATE.HHZ. 2023-04-06T20:36:19.37 0.1 undecidable manual P 125 24.8529 129 0.36 92
IV.PABO.HHZ. 2023-04-06T20:36:19.42 0.1 undecidable manual P 298 25.8519 127 0.3 93
IV.PTRJ.HHZ. 2023-04-06T20:36:19.93 0.1 undecidable manual P 200 32.6451 120 -0.06 96
IT.PLTA.HNZ. 2023-04-06T20:36:19.51 0.3 undecidable manual P 21 29.1486 124 -0.03 73
IV.CIGN.HHZ. 2023-04-06T20:36:18.61 0.1 positive manual P 86 20.0688 135 0.15 97
IV.BSSO.HHZ. 2023-04-06T20:36:17.65 0.1 positive manual P 209 11.9769 151 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BSSO.HHN. ML:2.3 0.00125 0.56 AML other m 2023-04-06T20:36:21.45
IV.BSSO.HNN. ML:2.3 0.00121 0.56 AML other m 2023-04-06T20:36:21.45
IV.BSSO.HNE. ML:2.4 0.001425 0.42 AML other m 2023-04-06T20:36:21.75
IV.CIGN.HHE. ML:1.8 0.0003005 0.3 AML other m 2023-04-06T20:36:21.75
IV.BSSO.HHE. ML:2.4 0.0014849999999999998 0.44 AML other m 2023-04-06T20:36:21.53
IV.SACR.HHN. ML:1.7 0.000192 0.54 AML other m 2023-04-06T20:36:24.27
IV.SACR.HNE. ML:1.8 0.00026949999999999994 0.74 AML other m 2023-04-06T20:36:24.67
IV.SACR.HHE. ML:1.8 0.0002805 0.74 AML other m 2023-04-06T20:36:24.30
IV.SACR.HNN. ML:1.7 0.000203 0.8 AML other m 2023-04-06T20:36:24.93
IV.PABO.HHN. ML:1.8 0.000262 0.42 AML other m 2023-04-06T20:36:25.55
IV.GATE.HHN. ML:1.6 0.0001625 1.02 AML other m 2023-04-06T20:36:25.16
IV.GATE.HNN. ML:1.6 0.00017299999999999998 1.02 AML other m 2023-04-06T20:36:25.16
IV.PTRJ.HHE. ML:2.0 0.0003525 1.4 AML other m 2023-04-06T20:36:25.05
IV.PTRJ.HHN. ML:1.8 0.000201 0.26 AML other m 2023-04-06T20:36:26.70
IV.PABO.HHE. ML:1.5 0.00012085 0.66 AML other m 2023-04-06T20:36:27.98
IV.MELA.HHN. ML:2.1 0.00033999999999999997 1.42 AML other m 2023-04-06T20:36:27.00
IV.MELA.HHE. ML:2.1 0.00035299999999999996 0.7 AML other m 2023-04-06T20:36:28.42
IV.CIGN.HHN. ML:1.8 0.00033650000000000005 0.38 AML other m 2023-04-06T20:36:28.45
IV.SGG.HHE. ML:1.6 0.0001305 0.42 AML other m 2023-04-06T20:36:29.11
IV.SGG.HHN. ML:1.6 0.0001235 0.56 AML other m 2023-04-06T20:36:29.34
IV.GATE.HHE. ML:1.6 0.0001655 0.3 AML other m 2023-04-06T20:36:31.28
IV.GATE.HNE. ML:1.6 0.000169 0.3 AML other m 2023-04-06T20:36:31.29
IV.LPEL.HHN. ML:1.9 0.0001565 0.78 AML other m 2023-04-06T20:36:34.25
IV.VAGA.HHE. ML:1.6 0.00010664999999999999 0.6 AML other m 2023-04-06T20:36:34.57
IV.VAGA.HHN. ML:1.8 0.000174 1.7 AML other m 2023-04-06T20:36:34.90
IV.LPEL.HHE. ML:1.9 0.0001445 0.9 AML other m 2023-04-06T20:36:35.67
IV.INTR.HHN. ML:1.9 0.000122 1.62 AML other m 2023-04-06T20:36:37.00
IV.INTR.HHE. ML:1.8 0.00008435 0.28 AML other m 2023-04-06T20:36:38.66
IV.CERA.HHN. ML:2.1 0.000265 1.4 AML other m 2023-04-06T20:36:38.13
IV.CERA.HNN. ML:2.1 0.0002595 1.4 AML other m 2023-04-06T20:36:38.14
IV.CERA.HHE. ML:1.9 0.000177 0.56 AML other m 2023-04-06T20:36:40.64
IV.CERA.HNE. ML:1.9 0.0001575 0.56 AML other m 2023-04-06T20:36:40.93
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