Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 28-04-2023 and time 21:07:26 (Italy) in region Castelpagano (BN)

A magnitude ML 0.9 earthquake occured in region: Castelpagano (BN), on

  • 28-04-2023 19:07:26 (UTC)
  • 28-04-2023 21:07:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4070, 14.8080 at 20 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 0 1483 1483
Colle Sannita BN 5 2431 3914
Circello BN 6 2388 6302
Santa Croce del Sannio BN 7 927 7229
Riccia CB 9 5262 12491
Cercemaggiore CB 9 3777 16268
Castelvetere in Val Fortore BN 12 1240 17508
Jelsi CB 13 1781 19289
Sassinoro BN 13 618 19907
Reino BN 13 1210 21117
San Marco dei Cavoti BN 13 3371 24488
Gildone CB 13 809 25297
Cercepiccola CB 13 681 25978
Baselice BN 14 2397 28375
Morcone BN 14 4932 33307
Tufara CB 14 925 34232
Gambatesa CB 15 1464 35696
Campolattaro BN 15 1072 36768
San Giuliano del Sannio CB 15 1029 37797
Foiano di Val Fortore BN 15 1410 39207
Molinara BN 15 1618 40825
Sepino CB 16 1964 42789
Pontelandolfo BN 16 2167 44956
Mirabello Sannitico CB 17 2180 47136
Fragneto l'Abate BN 17 1049 48185
San Bartolomeo in Galdo BN 17 4867 53052
Campodipietra CB 18 2570 55622
San Giorgio La Molara BN 18 2994 58616
Ferrazzano CB 18 3344 61960
Fragneto Monforte BN 18 1840 63800
Pago Veiano BN 19 2406 66206
Casalduni BN 19 1378 67584
Toro CB 19 1391 68975
Montefalcone di Val Fortore BN 19 1525 70500
Pesco Sannita BN 19 1972 72472

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of Benevento (60091 inhabitants)
54 Km NE of Caserta (76326 inhabitants)
55 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)
75 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)
78 Km NE of Torre del Greco (86275 inhabitants)
78 Km NE of Napoli (974074 inhabitants)
79 Km N of Cava de' Tirreni (53659 inhabitants)
81 Km N of Salerno (135261 inhabitants)
84 Km NE of Castellammare di Stabia (66466 inhabitants)
86 Km NE of Pozzuoli (81661 inhabitants)
90 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 0.9 2023-04-28
19:07:26		 41.4072 14.8082 20 2024-03-01
17:18:11		 Bollettino Sismico Italiano INGV 118332451
Reviewed
Rev100 		ML 0.7 2023-04-28
19:07:26		 41.3788 14.8043 11 2024-01-29
12:25:44		 Sala Sismica INGV-Roma 116851131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-28 19:07:26 ± 0.23
Latitude 41.4072 ± 0.0081
Longitude 14.8082 ± 0.0096
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118332451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 995
Semi-minor axis of confidence ellipse (meter) 433
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 136
Circular confidence region, given by single value of horizontal uncertainty (meter) 990.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.38221
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 116851131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-28 19:16:19

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 118332451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-29 12:25:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MELA.HHZ. 2023-04-28T19:07:40.70 0.6 undecidable manual S 39 42.4242 106 0.02 53
IV.PTRJ.HHZ. 2023-04-28T19:07:36.40 0.3 undecidable manual S 258 23.754 122 0.31 76
IV.BSSO.HHZ. 2023-04-28T19:07:36.53 0.6 undecidable manual S 311 23.5542 122 0.48 49
IV.PSB1.HNE. 2023-04-28T19:07:35.63 0.3 undecidable manual S 179 20.3685 127 0.28 78
IV.GATE.HHZ. 2023-04-28T19:07:34.50 0.3 undecidable manual S 36 14.4744 138 0.31 80
IV.MELA.HHZ. 2023-04-28T19:07:34.44 0.3 undecidable manual P 39 42.4242 106 -0.28 75
IV.CIGN.HHN. 2023-04-28T19:07:32.90 0.3 undecidable manual P 16 28.5492 116 0.18 79
IV.SACR.HHZ. 2023-04-28T19:07:32.90 0.3 undecidable manual S 263 8.5803 153 -0.39 78
IV.BSSO.HHZ. 2023-04-28T19:07:31.96 0.3 undecidable manual P 311 23.5542 122 -0.08 82
IV.PSB1.HNE. 2023-04-28T19:07:31.84 0.3 undecidable manual P 179 20.3685 127 0.2 79
IV.PTRJ.HHZ. 2023-04-28T19:07:31.91 0.3 undecidable manual P 258 23.754 122 -0.16 81
IV.GATE.HHZ. 2023-04-28T19:07:30.89 0.3 undecidable manual P 36 14.4744 138 -0.08 82
IV.SACR.HHZ. 2023-04-28T19:07:29.90 0.1 positive manual P 263 8.5803 153 -0.55 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACR.HHN. ML:1.0 0.00006950000000000001 1.54 AML other m 2023-04-28T19:07:32.18
IV.SACR.HHE. ML:1.0 0.00008024999999999999 1.44 AML other m 2023-04-28T19:07:33.86
IV.GATE.HHE. ML:1.2 0.0000967 0.56 AML other m 2023-04-28T19:07:35.30
IV.GATE.HHN. ML:1.2 0.0000955 1.48 AML other m 2023-04-28T19:07:35.08
IV.PTRJ.HHE. ML:0.6 0.0000219 0.82 AML other m 2023-04-28T19:07:37.84
IV.PTRJ.HHN. ML:0.6 0.00002035 0.92 AML other m 2023-04-28T19:07:37.73
IV.BSSO.HHE. ML:0.9 0.0000378 1.58 AML other m 2023-04-28T19:07:37.89
IV.BSSO.HHN. ML:0.7 0.000027099999999999998 1.54 AML other m 2023-04-28T19:07:39.78
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