Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 26-08-2023 and time 01:40:57 (Italy) in region 5 km E Bagnoli Irpino (AV)

A magnitude ML 1.4 earthquake occured in region: 5 km E Bagnoli Irpino (AV), on

  • 25-08-2023 23:40:57 (UTC)
  • 26-08-2023 01:40:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8430, 15.1300 at 6 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
Bagnoli Irpino AV 5 3217 3217
Nusco AV 6 4203 7420
Lioni AV 6 6201 13621
Caposele AV 9 3483 17104
Cassano Irpino AV 9 982 18086
Montella AV 10 7780 25866
Calabritto AV 10 2391 28257
Sant'Angelo dei Lombardi AV 10 4250 32507
Teora AV 10 1537 34044
Torella dei Lombardi AV 11 2144 36188
Castelfranci AV 12 2041 38229
Rocca San Felice AV 13 851 39080
Senerchia AV 13 842 39922
Acerno SA 13 2783 42705
Morra De Sanctis AV 13 1297 44002
Montemarano AV 14 2851 46853
Guardia Lombardi AV 14 1718 48571
Villamaina AV 15 995 49566
Castelvetere sul Calore AV 16 1615 51181
Laviano SA 16 1438 52619
Castelnuovo di Conza SA 16 619 53238
Valva SA 16 1643 54881
Santomenna SA 17 443 55324
Paternopoli AV 17 2384 57708
Conza della Campania AV 17 1373 59081
Volturara Irpina AV 18 3289 62370
San Mango sul Calore AV 19 1185 63555
Colliano SA 19 3638 67193
Andretta AV 19 1927 69120
Gesualdo AV 19 3516 72636
Oliveto Citra SA 19 3802 76438
Frigento AV 19 3780 80218
Campagna SA 20 16703 96921
Luogosano AV 20 1187 98108

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Battipaglia (50786 inhabitants)
29 Km E of Avellino (54857 inhabitants)
36 Km NE of Salerno (135261 inhabitants)
39 Km E of Cava de' Tirreni (53659 inhabitants)
43 Km SE of Benevento (60091 inhabitants)
52 Km E of Scafati (50787 inhabitants)
57 Km E of Castellammare di Stabia (66466 inhabitants)
61 Km W of Potenza (67122 inhabitants)
65 Km E of Torre del Greco (86275 inhabitants)
65 Km E of Acerra (59573 inhabitants)
65 Km E of Portici (55274 inhabitants)
66 Km E of Ercolano (53709 inhabitants)
70 Km E of Afragola (65057 inhabitants)
71 Km E of Casoria (77642 inhabitants)
72 Km E of Caserta (76326 inhabitants)
74 Km E of Napoli (974074 inhabitants)
77 Km SW of Foggia (151991 inhabitants)
79 Km E of Giugliano in Campania (122974 inhabitants)
79 Km E of Aversa (53047 inhabitants)
79 Km E of Marano di Napoli (59874 inhabitants)
80 Km SW of Cerignola (58396 inhabitants)
87 Km E of Pozzuoli (81661 inhabitants)
96 Km S of San Severo (53905 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 1.4 2023-08-25
23:40:57		 40.8428 15.1303 6 2023-08-25
23:55:02		 Sala Sismica INGV-Roma 120476951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-25 23:40:57 ± 0.18
Latitude 40.8428 ± 0.0045
Longitude 15.1303 ± 0.0095
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 120476951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 686
Semi-minor axis of confidence ellipse (meter) 434
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 105
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
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) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34174
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 120476951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-08-25 23:55:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VULT.HHZ. 2023-08-25T23:41:12.49 0.3 undecidable manual S -0.07 1.06
IV.CAFE.HHZ. 2023-08-25T23:41:05.82 0.6 undecidable manual S 23 22.3554 105 0.38 45
IX.CMP3.EHZ.02 2023-08-25T23:41:05.90 0.6 undecidable manual S 191 21.5673 105 0.73 40
IX.RDM3.HHE.02 2023-08-25T23:41:04.99 1.0 undecidable manual P 84 34.2435 100 0.63 20
IV.SGTA.HNE. 2023-08-25T23:41:04.76 0.6 undecidable manual P 31 37.9287 99 -0.33 44
IX.SNR3.EHZ.02 2023-08-25T23:41:03.09 0.6 undecidable manual S 156 12.9759 115 0.74 40
IX.SCL3.HNE.02 2023-08-25T23:41:03.78 0.3 undecidable manual P 117 35.9418 99 -0.92 53
IV.MRLC.HHZ. 2023-08-25T23:41:03.02 0.3 undecidable manual P 108 31.6461 101 -0.82 56
IX.CMP3.EHZ.02 2023-08-25T23:41:02.13 0.1 undecidable manual P 191 21.5673 105 0.25 92
IX.CLT3.EHZ.02 2023-08-25T23:41:02.71 0.1 undecidable manual P 74 23.9538 104 0.37 89
IX.COL3.HHZ.02 2023-08-25T23:41:02.16 0.3 undecidable manual P 136 24.0537 104 -0.22 69
IV.CAFE.HHZ. 2023-08-25T23:41:02.03 0.6 positive manual P 23 22.3554 105 -0.01 48
IV.SNAL.HHZ. 2023-08-25T23:41:01.89 0.3 undecidable manual S 36 11.2776 118 0.06 73
IX.SALI.HNZ.01 2023-08-25T23:41:01.57 0.6 undecidable manual S 23 10.4784 119 -0.03 49
IX.MNT3.HNZ.02 2023-08-25T23:41:00.14 0.3 undecidable manual P 266 10.3785 120 0.34 69
IV.SNAL.HHZ. 2023-08-25T23:41:00.14 0.1 positive manual P 36 11.2776 118 0.19 95
IX.SNR3.EHZ.02 2023-08-25T23:41:00.30 0.1 undecidable manual P 156 12.9759 115 0.04 97
IV.MCRV.HHZ. 2023-08-25T23:41:00.54 0.3 undecidable manual S 154 7.3815 129 -0.16 72
IX.MNT3.HNZ.02 2023-08-25T23:41:00.90 0.3 undecidable manual S 266 10.3785 120 -0.66 62
IX.SALI.HNZ.01 2023-08-25T23:40:59.87 0.3 undecidable manual P 23 10.4784 119 0.05 73
IX.LIO3.HHZ.02 2023-08-25T23:40:59.25 0.1 undecidable manual P 35 7.2927 129 -0.04 98
IX.NSC3.EHZ.02 2023-08-25T23:40:59.45 0.3 undecidable manual S 303 0.7992 172 -0.03 75
IV.MCRV.HHZ. 2023-08-25T23:40:59.13 0.1 undecidable manual P 154 7.3815 129 -0.17 96
IX.NSC3.EHZ.02 2023-08-25T23:40:58.60 0.1 positive manual P 303 0.7992 172 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.SNR3.HNE.01 ML:1.6 0.00046638075 0.256 AML other m 2023-08-25T23:41:04.10
IX.SNR3.EHE.02 ML:1.5 0.00043266125 0.4992 AML other m 2023-08-25T23:41:04.36
IX.SNR3.HNN.01 ML:1.9 0.00091811225 0.256 AML other m 2023-08-25T23:41:05.70
IX.SNR3.EHN.02 ML:1.8 0.0008423848499999999 0.256 AML other m 2023-08-25T23:41:05.45
IV.SNAL.HHE. ML:1.3 0.0002661329 0.7552 AML other m 2023-08-25T23:41:06.41
IV.SNAL.HHN. ML:1.3 0.00029216569999999996 0.5632 AML other m 2023-08-25T23:41:06.44
IV.CAFE.HHN. ML:0.0 0.000072033005 0.32 AML other m 2023-08-25T23:41:06.66
IV.CAFE.HHE. ML:0.0 0.000077301955 0.2176 AML other m 2023-08-25T23:41:07.28
IX.CMP3.EHE.02 ML:1.5 0.00022400000000000002 1.1 AML other m 2023-08-25T23:41:07.25
IX.CMP3.EHN.02 ML:1.6 0.00029800000000000003 0.76 AML other m 2023-08-25T23:41:07.26
IX.NSC3.EHE.02 ML:0.0 0.0020577205000000005 0.1664 AML other m 2023-08-25T23:40:59.94
IX.NSC3.EHN.02 ML:0.0 0.0020981405 0.1408 AML other m 2023-08-25T23:41:00.04
IX.NSC3.HNE.01 ML:0.0 0.0020942565000000002 0.1408 AML other m 2023-08-25T23:40:59.94
IX.NSC3.HNN.01 ML:0.0 0.002095332 0.1664 AML other m 2023-08-25T23:41:00.04
IV.SNAL.HNE. ML:1.2 0.00022929295 0.512 AML other m 2023-08-25T23:41:05.02
IV.SNAL.HNN. ML:1.3 0.00030732545 0.5632 AML other m 2023-08-25T23:41:06.44
IV.CAFE.HNE. ML:1.0 0.00007267486000000001 0.192 AML other m 2023-08-25T23:41:07.28
IV.CAFE.HNN. ML:0.9 0.000056939370000000004 0.32 AML other m 2023-08-25T23:41:06.82
IX.CMP3.HNE.01 ML:1.5 0.0002401121 0.2304 AML other m 2023-08-25T23:41:07.92
IX.CMP3.HNN.01 ML:1.6 0.0003070996 0.2048 AML other m 2023-08-25T23:41:07.36
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