Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 21-04-2023 and time 03:07:20 (Italy) in region 2 km N Castelpagano (BN)

A magnitude ML 0.7 earthquake occured in region: 2 km N Castelpagano (BN), on

  • 21-04-2023 01:07:20 (UTC)
  • 21-04-2023 03:07:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4240, 14.8000 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.

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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 2 1483 1483
Santa Croce del Sannio BN 7 927 2410
Colle Sannita BN 7 2431 4841
Circello BN 8 2388 7229
Cercemaggiore CB 8 3777 11006
Riccia CB 8 5262 16268
Jelsi CB 11 1781 18049
Gildone CB 11 809 18858
Cercepiccola CB 12 681 19539
Castelvetere in Val Fortore BN 12 1240 20779
Sassinoro BN 13 618 21397
Gambatesa CB 14 1464 22861
San Giuliano del Sannio CB 14 1029 23890
Tufara CB 14 925 24815
Morcone BN 15 4932 29747
Mirabello Sannitico CB 15 2180 31927
Baselice BN 15 2397 34324
Reino BN 15 1210 35534
San Marco dei Cavoti BN 15 3371 38905
Sepino CB 15 1964 40869
Campodipietra CB 16 2570 43439
Ferrazzano CB 16 3344 46783
Campolattaro BN 16 1072 47855
Foiano di Val Fortore BN 17 1410 49265
Toro CB 17 1391 50656
Molinara BN 17 1618 52274
Pontelandolfo BN 18 2167 54441
San Bartolomeo in Galdo BN 18 4867 59308
Pietracatella CB 19 1375 60683
Fragneto l'Abate BN 19 1049 61732
San Giovanni in Galdo CB 19 580 62312
Campobasso CB 19 49431 111743
Vinchiaturo CB 19 3324 115067
San Giorgio La Molara BN 20 2994 118061
Fragneto Monforte BN 20 1840 119901

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km N of Benevento (60091 inhabitants)
55 Km NE of Caserta (76326 inhabitants)
57 Km SW of San Severo (53905 inhabitants)
57 Km N of Avellino (54857 inhabitants)
62 Km W of Foggia (151991 inhabitants)
64 Km NE of Acerra (59573 inhabitants)
69 Km NE of Afragola (65057 inhabitants)
71 Km NE of Aversa (53047 inhabitants)
72 Km NE of Casoria (77642 inhabitants)
74 Km NE of Giugliano in Campania (122974 inhabitants)
76 Km NE of Portici (55274 inhabitants)
78 Km NE of Marano di Napoli (59874 inhabitants)
78 Km NE of Ercolano (53709 inhabitants)
79 Km N of Scafati (50787 inhabitants)
80 Km NE of Napoli (974074 inhabitants)
80 Km NE of Torre del Greco (86275 inhabitants)
81 Km N of Cava de' Tirreni (53659 inhabitants)
83 Km N of Salerno (135261 inhabitants)
85 Km NE of Castellammare di Stabia (66466 inhabitants)
87 Km NE of Pozzuoli (81661 inhabitants)
92 Km N of Battipaglia (50786 inhabitants)
94 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 0.7 2023-04-21
01:07:20		 41.4242 14.8003 20 2024-03-01
17:18:21		 Bollettino Sismico Italiano INGV 125642101
Reviewed
Rev100 		ML 0.5 2023-04-21
01:07:21		 41.4247 14.8133 10 2023-04-21
01:19:17		 Sala Sismica INGV-Roma 116561661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-21 01:07:20 ± 0.31
Latitude 41.4242 ± 0.0099
Longitude 14.8003 ± 0.0132
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 125642101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1119
Semi-minor axis of confidence ellipse (meter) 155
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 163
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.37232
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 125642101
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-03-01 17:02:46

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 116561661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-21 01:19:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MELA.HHZ. 2023-04-21T01:07:34.79 0.6 undecidable manual S 41 41.3253 107 0.19 47
IV.VITU.HNZ. 2023-04-21T01:07:32.65 0.6 undecidable manual S 208 30.2475 114 0.83 39
IV.MOCO.HNZ. 2023-04-21T01:07:32.70 0.6 undecidable manual S 101 30.3474 114 0.86 39
IV.PTRJ.HHZ. 2023-04-21T01:07:31.15 0.6 undecidable manual S 254 23.5542 122 0.91 38
IV.BSSO.HHZ. 2023-04-21T01:07:30.51 0.3 undecidable manual S 308 21.867 124 0.65 64
IV.PSB1.HHZ. 2023-04-21T01:07:29.64 0.6 undecidable manual S 178 22.2555 124 -0.31 47
IV.MELA.HHZ. 2023-04-21T01:07:28.38 0.1 undecidable manual P 41 41.3253 107 -0.37 90
IV.GATE.HHZ. 2023-04-21T01:07:28.58 0.6 undecidable manual S 43 13.4754 141 0.38 47
IV.VITU.HNZ. 2023-04-21T01:07:27.27 0.3 undecidable manual P 208 30.2475 114 0.13 72
IV.MOCO.HNZ. 2023-04-21T01:07:27.42 0.3 undecidable manual P 101 30.3474 114 0.26 70
IV.SACR.HHZ. 2023-04-21T01:07:26.89 0.6 undecidable manual S 249 8.3805 154 -0.57 45
IV.BSSO.HHZ. 2023-04-21T01:07:26.06 0.3 undecidable manual P 308 21.867 124 0.05 74
IV.PTRJ.HHZ. 2023-04-21T01:07:25.89 0.1 undecidable manual P 254 23.5542 122 -0.34 94
IV.PSB1.HHZ. 2023-04-21T01:07:25.85 0.3 undecidable manual P 178 22.2555 124 -0.22 72
IV.GATE.HHZ. 2023-04-21T01:07:24.97 0.1 undecidable manual P 43 13.4754 141 -0.08 100
IV.SACR.HHZ. 2023-04-21T01:07:23.86 0.1 undecidable manual P 249 8.3805 154 -0.77 83
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACR.HHN. ML:0.5 0.00002293886 0.88 AML other m 2023-04-21T01:07:25.95
IV.SACR.HHE. ML:0.7 0.000040860755 0.16 AML other m 2023-04-21T01:07:26.09
IV.GATE.HHE. ML:1.0 0.0000658 0.58 AML other m 2023-04-21T01:07:29.30
IV.GATE.HHN. ML:1.0 0.00006555 0.48 AML other m 2023-04-21T01:07:29.07
IV.PTRJ.HHE. ML:0.5 0.00001585 0.84 AML other m 2023-04-21T01:07:31.83
IV.PTRJ.HHN. ML:0.5 0.00001415 0.24 AML other m 2023-04-21T01:07:31.61
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