Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-04-2023 and time 10:46:07 (UTC) in region 1 km NW Castelpagano (BN)

A magnitude ML 1.5 earthquake occured in region: 1 km NW Castelpagano (BN), on

  • 21-04-2023 10:46:07 (UTC)
  • 21-04-2023 12:46:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4140, 14.8030 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
Castelpagano BN 1 1483 1483
Colle Sannita BN 6 2431 3914
Circello BN 6 2388 6302
Santa Croce del Sannio BN 7 927 7229
Cercemaggiore CB 9 3777 11006
Riccia CB 9 5262 16268
Jelsi CB 12 1781 18049
Gildone CB 12 809 18858
Castelvetere in Val Fortore BN 12 1240 20098
Cercepiccola CB 12 681 20779
Sassinoro BN 12 618 21397
Reino BN 14 1210 22607
San Marco dei Cavoti BN 14 3371 25978
Morcone BN 14 4932 30910
Tufara CB 14 925 31835
Gambatesa CB 14 1464 33299
Baselice BN 14 2397 35696
San Giuliano del Sannio CB 14 1029 36725
Campolattaro BN 15 1072 37797
Sepino CB 15 1964 39761
Mirabello Sannitico CB 16 2180 41941
Foiano di Val Fortore BN 16 1410 43351
Molinara BN 16 1618 44969
Pontelandolfo BN 17 2167 47136
Campodipietra CB 17 2570 49706
Ferrazzano CB 17 3344 53050
Fragneto l'Abate BN 18 1049 54099
San Bartolomeo in Galdo BN 18 4867 58966
Toro CB 18 1391 60357
San Giorgio La Molara BN 18 2994 63351
Fragneto Monforte BN 19 1840 65191
Casalduni BN 19 1378 66569
Pago Veiano BN 19 2406 68975
Pietracatella CB 20 1375 70350
Montefalcone di Val Fortore BN 20 1525 71875
Pesco Sannita BN 20 1972 73847
San Giovanni in Galdo CB 20 580 74427

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Benevento (60091 inhabitants)
54 Km NE of Caserta (76326 inhabitants)
56 Km N of Avellino (54857 inhabitants)
57 Km SW of San Severo (53905 inhabitants)
62 Km W of Foggia (151991 inhabitants)
63 Km NE of Acerra (59573 inhabitants)
68 Km NE of Afragola (65057 inhabitants)
70 Km NE of Aversa (53047 inhabitants)
71 Km NE of Casoria (77642 inhabitants)
74 Km NE of Giugliano in Campania (122974 inhabitants)
76 Km NE of Portici (55274 inhabitants)
77 Km NE of Marano di Napoli (59874 inhabitants)
77 Km NE of Ercolano (53709 inhabitants)
77 Km NE of Scafati (50787 inhabitants)
79 Km NE of Torre del Greco (86275 inhabitants)
79 Km NE of Napoli (974074 inhabitants)
80 Km N of Cava de' Tirreni (53659 inhabitants)
82 Km N of Salerno (135261 inhabitants)
84 Km NE of Castellammare di Stabia (66466 inhabitants)
87 Km NE of Pozzuoli (81661 inhabitants)
91 Km N of Battipaglia (50786 inhabitants)
93 Km W of Cerignola (58396 inhabitants)
96 Km W of Manfredonia (57279 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 1.5 2023-04-21
10:46:07		 41.4137 14.8032 19 2024-03-01
17:18:10		 Bollettino Sismico Italiano INGV 118145061
Reviewed
Rev100 		ML 1.6 2023-04-21
10:46:07		 41.4158 14.7983 19 2023-04-21
11:00:36		 Sala Sismica INGV-Roma 116569241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-21 10:46:07 ± 0.13
Latitude 41.4137 ± 0.0045
Longitude 14.8032 ± 0.0048
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 118145061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 440
Semi-minor axis of confidence ellipse (meter) 306
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.50452
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 118145061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-02-06 14:15:16

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 116569241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-21 11:00:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFE.HHN. 2023-04-21T10:46:24.69 0.6 undecidable manual S 140 55.9995 100 -0.2 47
IV.MELA.HHZ. 2023-04-21T10:46:21.38 0.6 undecidable manual S 40 42.1245 105 0.11 48
IV.MRB1.HHZ. 2023-04-21T10:46:19.22 1.0 undecidable manual S 157 35.0427 109 -0.25 24
IV.SGG.HHZ. 2023-04-21T10:46:19.33 1.0 undecidable manual S 265 35.4423 108 -0.22 24
IV.MOCO.HHZ. 2023-04-21T10:46:18.16 0.6 undecidable manual S 99 29.9478 113 -0.02 50
IV.VITU.HHZ. 2023-04-21T10:46:18.27 0.6 undecidable manual S 209 29.3484 113 0.24 49
IV.CIGN.HHZ. 2023-04-21T10:46:17.39 0.6 undecidable manual S 18 27.9498 115 -0.31 48
IV.BSSO.HHZ. 2023-04-21T10:46:17.04 0.6 undecidable manual S 310 22.755 121 0.57 46
IV.CAFE.HHN. 2023-04-21T10:46:17.38 0.3 undecidable manual P 140 55.9995 100 -0.07 72
IV.PTRJ.HHZ. 2023-04-21T10:46:16.98 0.6 undecidable manual S 257 23.4543 120 0.35 48
IV.PSB1.HHZ. 2023-04-21T10:46:16.23 0.6 undecidable manual S 178 21.0678 124 0.14 50
IV.MELA.HHZ. 2023-04-21T10:46:15.05 0.1 undecidable manual P 40 42.1245 105 -0.31 94
IV.GATE.HHZ. 2023-04-21T10:46:14.98 0.6 undecidable manual S 39 14.1747 137 0.3 49
IV.MRB1.HHZ. 2023-04-21T10:46:14.28 1.0 undecidable manual P 157 35.0427 109 -0.04 25
IV.SGG.HHZ. 2023-04-21T10:46:14.46 0.3 undecidable manual P 265 35.4423 108 0.09 74
IV.SACR.HNZ. 2023-04-21T10:46:13.61 0.6 undecidable manual S 258 8.2806 152 -0.16 50
IV.MOCO.HHZ. 2023-04-21T10:46:13.98 0.1 undecidable manual P 99 29.9478 113 0.41 92
IV.CIGN.HHZ. 2023-04-21T10:46:13.35 0.6 undecidable manual P 18 27.9498 115 0.05 50
IV.VITU.HHZ. 2023-04-21T10:46:13.54 0.6 undecidable manual P 209 29.3484 113 0.05 50
IV.PTRJ.HHZ. 2023-04-21T10:46:12.59 0.1 positive manual P 257 23.4543 120 -0.09 100
IV.BSSO.HHZ. 2023-04-21T10:46:12.64 0.3 undecidable manual P 310 22.755 121 0.05 76
IV.PSB1.HHZ. 2023-04-21T10:46:12.51 0.1 undecidable manual P 178 21.0678 124 0.14 100
IV.GATE.HHZ. 2023-04-21T10:46:11.52 0.3 undecidable manual P 39 14.1747 137 -0.04 77
IV.SACR.HNZ. 2023-04-21T10:46:10.49 0.1 positive manual P 258 8.2806 152 -0.54 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GATE.HNE. ML:1.8 0.0004125 0.56 AML other m 2023-04-21T10:46:15.97
IV.GATE.HHE. ML:1.8 0.00040100000000000004 0.56 AML other m 2023-04-21T10:46:15.97
IV.GATE.HNN. ML:1.8 0.00040149999999999995 0.52 AML other m 2023-04-21T10:46:15.49
IV.GATE.HHN. ML:1.8 0.0004195 0.52 AML other m 2023-04-21T10:46:15.75
IV.PSB1.HHE. ML:1.2 0.00008625 0.5 AML other m 2023-04-21T10:46:16.70
IV.PSB1.HHN. ML:1.2 0.00008319999999999999 0.36 AML other m 2023-04-21T10:46:16.67
IV.BSSO.HHE. ML:1.4 0.000135 0.32 AML other m 2023-04-21T10:46:17.27
IV.BSSO.HHN. ML:1.4 0.000118 0.42 AML other m 2023-04-21T10:46:20.67
IV.MELA.HHE. ML:1.9 0.0002305 0.48 AML other m 2023-04-21T10:46:21.70
IV.MELA.HHN. ML:1.6 0.00011945 1 AML other m 2023-04-21T10:46:22.17
IV.SGG.HHE. ML:1.1 0.00004485 0.72 AML other m 2023-04-21T10:46:22.83
IV.SGG.HHN. ML:1.0 0.00004175 0.46 AML other m 2023-04-21T10:46:24.29
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