Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 28-03-2023 and time 23:31:04 (UTC) in region 1 km SW Montagano (CB)

A magnitude ML 1.9 earthquake occured in region: 1 km SW Montagano (CB), on

  • 28-03-2023 23:31:04 (UTC)
  • 29-03-2023 01:31:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6430, 14.6640 at 28 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
Castellino del Biferno CB 9 545 8989
Castropignano CB 9 947 9936
Oratino CB 9 1641 11577
San Giovanni in Galdo CB 9 580 12157
Campobasso CB 9 49431 61588
Lucito CB 10 696 62284
San Biase CB 10 189 62473
Fossalto CB 10 1345 63818
Toro CB 11 1391 65209
Campodipietra CB 12 2570 67779
Torella del Sannio CB 12 795 68574
Morrone del Sannio CB 12 587 69161
Ferrazzano CB 12 3344 72505
Monacilioni CB 13 523 73028
Pietracupa CB 13 215 73243
Busso CB 13 1273 74516
Castelbottaccio CB 13 312 74828
Ripabottoni CB 13 514 75342
Casalciprano CB 13 564 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
Provvidenti CB 16 119 81967
Gildone CB 16 809 82776
Duronia CB 17 405 83181
Salcito CB 17 683 83864
Sant'Elena Sannita IS 18 275 84139
Jelsi CB 18 1781 85920
Sant'Elia a Pianisi CB 18 1818 87738
Vinchiaturo CB 18 3324 91062
Spinete CB 18 1320 92382
Bagnoli del Trigno IS 18 735 93117
Trivento CB 18 4730 97847
Frosolone IS 18 3170 101017
Casacalenda CB 19 2135 103152
Pietracatella CB 19 1375 104527
Colle d'Anchise CB 19 807 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 NE 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)
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 1.9 2023-03-28
23:31:04		 41.6427 14.6645 28 2024-03-01
17:18:09		 Bollettino Sismico Italiano INGV 117492931
Reviewed
Rev100 		ML 1.8 2023-03-28
23:31:05		 41.6518 14.6483 19 2023-03-28
23:38:32		 Sala Sismica INGV-Roma 115833691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-28 23:31:04 ± 0.15
Latitude 41.6427 ± 0.0054
Longitude 14.6645 ± 0.0072
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117492931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 657
Semi-minor axis of confidence ellipse (meter) 131
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 154
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
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 37
Number of defining phases 37
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) 0.10972
Epicentral distance of station farthest from the epicenter (degree) 0.93889
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 117492931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-12-28 14:31:12

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 115833691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-28 23:38:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APRC.HHZ. 2023-03-28T23:31:26.78 0.6 undecidable manual S 80 73.8705 105 -0.31 43
IV.MCRV.HHZ. 2023-03-28T23:31:23.43 0.6 undecidable manual P 156 104.2179 100 1.4 26
IV.LPEL.HHZ. 2023-03-28T23:31:23.98 0.6 undecidable manual S 319 59.8956 109 0.45 42
IV.T0110.HHZ. 2023-03-28T23:31:20.69 0.3 undecidable manual P 312 98.0241 101 -0.4 60
IV.VAGA.HHZ. 2023-03-28T23:31:20.40 0.6 undecidable manual S 235 43.7229 117 0.86 38
IV.SGRT.HHZ. 2023-03-28T23:31:20.23 0.3 undecidable manual P 82 90.243 102 0.31 62
IV.RNI2.HHZ. 2023-03-28T23:31:19.87 0.6 undecidable manual S 279 42.9237 117 0.51 43
IV.VVLD.HHZ. 2023-03-28T23:31:19.37 0.3 undecidable manual P 287 89.7435 102 -0.47 60
IV.MELA.HHZ. 2023-03-28T23:31:18.48 0.6 undecidable manual S 79 38.9277 120 0.06 48
IT.GLNS.HNZ. 2023-03-28T23:31:18.44 0.6 undecidable manual S 35 36.5412 122 0.58 41
IT.MCLF.HNE. 2023-03-28T23:31:17.06 0.6 undecidable manual S 26 32.0457 126 0.19 47
IV.SGG.HHZ. 2023-03-28T23:31:17.41 0.6 undecidable manual S 220 37.0296 121 -0.56 42
IV.APRC.HHZ. 2023-03-28T23:31:17.03 0.3 undecidable manual P 80 73.8705 105 -0.43 62
OT.OT05.EHZ. 2023-03-28T23:31:17.52 0.3 undecidable manual P 88 77.7666 104 -0.52 60
IV.PIGN.HHZ. 2023-03-28T23:31:16.16 0.3 undecidable manual P 220 63.492 108 0.22 67
IV.SACR.HHZ. 2023-03-28T23:31:15.56 0.3 undecidable manual S 173 27.4503 131 -0.33 68
IV.LPEL.HHZ. 2023-03-28T23:31:15.36 0.1 undecidable manual P 319 59.8956 109 -0.05 93
IV.PABO.HHZ. 2023-03-28T23:31:15.75 0.6 undecidable manual S 297 25.8519 133 0.18 47
IT.PLTA.HNN. 2023-03-28T23:31:15.98 0.3 undecidable manual S 21 28.9488 129 -0.23 72
IV.MOCO.HHZ. 2023-03-28T23:31:15.12 0.3 undecidable manual P 126 50.9157 113 1 53
IV.GATE.HHZ. 2023-03-28T23:31:15.73 0.6 undecidable manual S 125 24.9528 134 0.33 47
IV.CIGN.HHZ. 2023-03-28T23:31:14.82 0.6 undecidable manual S 86 19.9689 141 0.32 47
IV.CERA.HHZ. 2023-03-28T23:31:14.55 0.6 undecidable manual P 265 53.8017 111 0.02 47
IV.VAGA.HHZ. 2023-03-28T23:31:13.21 0.1 positive manual P 235 43.7229 117 0.11 95
IV.RNI2.HHZ. 2023-03-28T23:31:13.10 0.1 undecidable manual P 279 42.9237 117 0.1 94
IV.MELA.HHZ. 2023-03-28T23:31:12.43 0.1 positive manual P 79 38.9277 120 -0.03 97
IV.BSSO.HHZ. 2023-03-28T23:31:12.32 0.6 undecidable manual S 209 12.1767 154 -1.05 36
IT.GLNS.HNZ. 2023-03-28T23:31:12.22 0.3 undecidable manual P 35 36.5412 122 0.09 71
IV.SGG.HHZ. 2023-03-28T23:31:12.09 0.1 undecidable manual P 220 37.0296 121 -0.1 95
IT.MCLF.HNE. 2023-03-28T23:31:11.44 0.3 undecidable manual P 26 32.0457 126 -0.13 72
IT.PLTA.HNN. 2023-03-28T23:31:11.09 0.3 undecidable manual P 21 28.9488 129 -0.08 73
IV.GATE.HHZ. 2023-03-28T23:31:10.87 0.3 undecidable manual P 125 24.9528 134 0.15 73
IT.LRNO.HNZ. 2023-03-28T23:31:10.97 0.1 undecidable manual P 49 27.8499 130 -0.09 98
IV.SACR.HHZ. 2023-03-28T23:31:10.98 0.1 undecidable manual P 173 27.4503 131 -0.02 98
IV.CIGN.HHZ. 2023-03-28T23:31:10.18 0.1 undecidable manual P 86 19.9689 141 -0.01 100
IV.PABO.HHZ. 2023-03-28T23:31:10.79 0.1 undecidable manual P 297 25.8519 133 -0.03 99
IV.BSSO.HHZ. 2023-03-28T23:31:09.11 0.1 positive manual P 209 12.1767 154 -0.43 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BSSO.HHN. ML:2.3 0.0010995 0.52 AML other m 2023-03-28T23:31:12.83
IV.BSSO.HNN. ML:2.3 0.0010765 0.54 AML other m 2023-03-28T23:31:12.84
IV.BSSO.HHE. ML:2.4 0.00115 1.44 AML other m 2023-03-28T23:31:13.90
IV.BSSO.HNE. ML:2.3 0.001145 1.44 AML other m 2023-03-28T23:31:13.19
IV.PABO.HHN. ML:1.7 0.0001735 0.54 AML other m 2023-03-28T23:31:15.13
IV.SACR.HNN. ML:1.8 0.000243 0.5 AML other m 2023-03-28T23:31:15.73
IV.SACR.HHE. ML:2.0 0.00035350000000000003 1.22 AML other m 2023-03-28T23:31:15.74
IV.SACR.HNE. ML:2.0 0.000336 1.24 AML other m 2023-03-28T23:31:15.13
IV.SACR.HHN. ML:1.8 0.00022250000000000001 1.1 AML other m 2023-03-28T23:31:16.39
IV.GATE.HNE. ML:1.7 0.0001785 0.62 AML other m 2023-03-28T23:31:17.59
IV.PABO.HHE. ML:1.4 0.0001066 0.42 AML other m 2023-03-28T23:31:18.38
IV.MELA.HHN. ML:2.2 0.000439 0.3 AML other m 2023-03-28T23:31:19.07
IV.CIGN.HHE. ML:1.9 0.0003635 1.5 AML other m 2023-03-28T23:31:19.84
IV.CIGN.HHN. ML:2.1 0.0005425 1.6 AML other m 2023-03-28T23:31:19.01
IV.MELA.HHE. ML:2.1 0.00039549999999999996 0.5 AML other m 2023-03-28T23:31:20.47
IV.GATE.HHN. ML:1.7 0.0001835 0.42 AML other m 2023-03-28T23:31:20.26
IV.GATE.HNN. ML:1.7 0.00020750000000000003 0.42 AML other m 2023-03-28T23:31:20.26
IV.RNI2.HNN. ML:2.0 0.000247 0.14 AML other m 2023-03-28T23:31:20.37
IV.RNI2.HHN. ML:2.0 0.000259 0.14 AML other m 2023-03-28T23:31:20.37
IV.SGG.HHE. ML:1.7 0.0001505 0.7 AML other m 2023-03-28T23:31:20.30
IV.SGG.HHN. ML:1.6 0.00012109999999999999 0.56 AML other m 2023-03-28T23:31:20.78
IV.RNI2.HHE. ML:2.0 0.000275 0.12 AML other m 2023-03-28T23:31:21.24
IV.RNI2.HNE. ML:2.0 0.0002505 0.12 AML other m 2023-03-28T23:31:21.18
IV.GATE.HHE. ML:1.6 0.00016049999999999997 0.74 AML other m 2023-03-28T23:31:22.22
IV.VAGA.HHE. ML:1.9 0.0001865 1.08 AML other m 2023-03-28T23:31:22.60
IV.LPEL.HHN. ML:1.9 0.00016 0.08 AML other m 2023-03-28T23:31:26.27
IV.LPEL.HHE. ML:2.0 0.00017749999999999998 0.7 AML other m 2023-03-28T23:31:26.62
IV.VAGA.HHN. ML:2.0 0.0002515 0.38 AML other m 2023-03-28T23:31:26.59
IV.APRC.HHE. ML:2.0 0.00013900000000000002 0.98 AML other m 2023-03-28T23:31:32.99
IV.VVLD.HHN. ML:1.6 0.00004240000000000001 0.56 AML other m 2023-03-28T23:31:32.30
IV.APRC.HHN. ML:2.0 0.00014549999999999999 0.9 AML other m 2023-03-28T23:31:32.16
IV.SGRT.HHN. ML:2.0 0.000117 0.42 AML other m 2023-03-28T23:31:36.28
IV.CESI.HHE. ML:2.0 0.000030550000000000004 0.32 AML other m 2023-03-28T23:31:37.02
IV.CESI.HHN. ML:2.2 0.0000455 0.38 AML other m 2023-03-28T23:31:37.23
IV.SGRT.HHE. ML:2.0 0.0001175 0.56 AML other m 2023-03-28T23:31:37.02
IV.VVLD.HHE. ML:1.6 0.00004235 0.5 AML other m 2023-03-28T23:31:40.64
IV.MCRV.HHE. ML:1.6 0.000034750000000000004 1.46 AML other m 2023-03-28T23:31:41.78
IV.MCRV.HHN. ML:1.8 0.00005985 0.7 AML other m 2023-03-28T23:31:42.07
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