Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 30-08-2023 and time 21:52:21 (Italy) in region 2 km S Macchia Valfortore (CB)

A magnitude ML 1.9 earthquake occured in region: 2 km S Macchia Valfortore (CB), on

  • 30-08-2023 19:52:21 (UTC)
  • 30-08-2023 21:52:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5730, 14.9160 at 28 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Macchia Valfortore CB 2 576 576
Pietracatella CB 4 1375 1951
Celenza Valfortore FG 5 1598 3549
Carlantino FG 6 980 4529
Sant'Elia a Pianisi CB 6 1818 6347
Gambatesa CB 7 1464 7811
San Marco la Catola FG 9 1012 8823
Monacilioni CB 10 523 9346
Tufara CB 10 925 10271
Colletorto CB 11 1938 12209
Riccia CB 12 5262 17471
Jelsi CB 12 1781 19252
Toro CB 12 1391 20643
San Giuliano di Puglia CB 13 1042 21685
San Giovanni in Galdo CB 14 580 22265
Campolieto CB 14 839 23104
Campodipietra CB 14 2570 25674
Volturara Appula FG 14 430 26104
Bonefro CB 15 1384 27488
Castelvetere in Val Fortore BN 15 1240 28728
Ripabottoni CB 16 514 29242
Gildone CB 16 809 30051
Casalnuovo Monterotaro FG 16 1556 31607
Casalvecchio di Puglia FG 17 1877 33484
Santa Croce di Magliano CB 17 4435 37919
Castelnuovo della Daunia FG 17 1445 39364
Matrice CB 18 1115 40479
Provvidenti CB 18 119 40598
Motta Montecorvino FG 18 730 41328
Pietramontecorvino FG 18 2721 44049
Montelongo CB 18 365 44414
Morrone del Sannio CB 19 587 45001
Casacalenda CB 19 2135 47136
San Bartolomeo in Galdo BN 20 4867 52003
Baselice BN 20 2397 54400

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of San Severo (53905 inhabitants)
50 Km N of Benevento (60091 inhabitants)
54 Km W of Foggia (151991 inhabitants)
74 Km NE of Caserta (76326 inhabitants)
74 Km N of Avellino (54857 inhabitants)
83 Km NE of Acerra (59573 inhabitants)
84 Km W of Manfredonia (57279 inhabitants)
88 Km NE of Afragola (65057 inhabitants)
89 Km NE of Aversa (53047 inhabitants)
89 Km W of Cerignola (58396 inhabitants)
91 Km NE of Casoria (77642 inhabitants)
93 Km NE of Giugliano in Campania (122974 inhabitants)
96 Km NE of Portici (55274 inhabitants)
96 Km NE of Marano di Napoli (59874 inhabitants)
97 Km NE of Scafati (50787 inhabitants)
97 Km NE of Ercolano (53709 inhabitants)
99 Km N of Cava de' Tirreni (53659 inhabitants)
99 Km NE of Napoli (974074 inhabitants)
99 Km NE of Torre del Greco (86275 inhabitants)
100 Km N of Salerno (135261 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
Reviewed
Rev100 		ML 1.9 2023-08-30
19:52:21		 41.5732 14.9157 28 2023-08-30
20:04:50		 Sala Sismica INGV-Roma 120621071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-30 19:52:21 ± 0.18
Latitude 41.5732 ± 0.0081
Longitude 14.9157 ± 0.0084
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120621071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 874
Semi-minor axis of confidence ellipse (meter) 553
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 146
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52071
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 120621071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-30 20:04:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.OT05.EHZ. 2023-08-30T19:52:39.69 0.3 undecidable manual S 80 57.7977 110 -0.31 70
OT.OT14.EHZ. 2023-08-30T19:52:38.64 3.0 negative manual P 0.8 0
IV.SGRT.HHZ. 2023-08-30T19:52:36.85 3.0 positive manual P 1.91 0
IV.PSB1.HHZ. 2023-08-30T19:52:36.03 0.3 undecidable manual S 193 39.7269 119 0.43 71
IV.TRIV.HHE. 2023-08-30T19:52:35.47 0.6 undecidable manual S 305 37.1295 121 0.47 47
IV.PTRJ.HHZ. 2023-08-30T19:52:35.18 0.3 undecidable manual S 234 39.627 119 -0.39 72
IV.SACR.HHZ. 2023-08-30T19:52:32.31 0.3 undecidable manual S 222 26.1516 132 -0.31 75
OT.OT05.EHZ. 2023-08-30T19:52:32.10 0.1 undecidable manual P 80 57.7977 110 -0.02 99
IV.BSSO.HHZ. 2023-08-30T19:52:32.55 0.3 undecidable manual S 264 26.8509 131 -0.22 76
IV.APRC.HHZ. 2023-08-30T19:52:32.25 3.0 undecidable manual P -0.15 0
IV.MELA.HHZ. 2023-08-30T19:52:31.98 0.3 undecidable manual S 50 22.8549 136 -0.02 80
IV.PTRJ.HHZ. 2023-08-30T19:52:29.40 0.1 undecidable manual P 234 39.627 119 -0.17 100
IV.PSB1.HHZ. 2023-08-30T19:52:29.99 0.3 undecidable manual P 193 39.7269 119 0.41 72
IV.CIGN.HHZ. 2023-08-30T19:52:29.99 0.3 undecidable manual S 354 9.0798 160 -0.01 82
IV.GATE.HHZ. 2023-08-30T19:52:29.90 0.6 undecidable manual S 184 6.6933 165 0.09 53
IV.TRIV.HHE. 2023-08-30T19:52:29.51 0.3 undecidable manual P 305 37.1295 121 0.28 74
IV.MELA.HHZ. 2023-08-30T19:52:27.68 0.3 undecidable manual P 50 22.8549 136 0.18 78
IV.SACR.HHZ. 2023-08-30T19:52:27.83 0.3 undecidable manual P 222 26.1516 132 -0.04 79
IV.BSSO.HHZ. 2023-08-30T19:52:27.90 0.3 undecidable manual P 264 26.8509 131 -0.05 79
IV.GATE.HHZ. 2023-08-30T19:52:26.51 0.3 undecidable manual P 184 6.6933 165 0.27 78
IV.CIGN.HHZ. 2023-08-30T19:52:25.99 0.3 undecidable manual P 354 9.0798 160 -0.36 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CIGN.HHE. ML:1.7 0.000258 0.38 AML other m 2023-08-30T19:52:29.61
IV.GATE.HNE. ML:2.2 0.0009215 0.22 AML other m 2023-08-30T19:52:30.45
IV.GATE.HHE. ML:2.2 0.000945 0.22 AML other m 2023-08-30T19:52:30.45
IV.MELA.HHE. ML:2.4 0.0011355 0.14 AML other m 2023-08-30T19:52:32.14
IV.MELA.HNE. ML:2.4 0.0010229999999999998 0.14 AML other m 2023-08-30T19:52:32.14
IV.CIGN.HHN. ML:1.7 0.00026986885000000006 0.32 AML other m 2023-08-30T19:52:30.25
IV.GATE.HNN. ML:1.9 0.00048301109999999997 0.384 AML other m 2023-08-30T19:52:31.56
IV.GATE.HHN. ML:1.9 0.00048186805 0.384 AML other m 2023-08-30T19:52:31.56
IV.MELA.HHN. ML:2.4 0.0009704999999999999 0.46 AML other m 2023-08-30T19:52:32.19
IV.MELA.HNN. ML:2.3 0.0008374999999999999 0.46 AML other m 2023-08-30T19:52:32.19
IV.SACR.HHE. ML:1.4 0.00008455 0.26 AML other m 2023-08-30T19:52:32.66
IV.SACR.HHN. ML:1.5 0.00011044999999999999 1.34 AML other m 2023-08-30T19:52:33.87
IV.BSSO.HHN. ML:1.5 0.0001302 0.42 AML other m 2023-08-30T19:52:33.51
IV.BSSO.HHE. ML:1.5 0.0001107 0.8 AML other m 2023-08-30T19:52:33.96
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