Earthquake with magnitude of Md 1.1 on date 25-09-2023 and time 17:29:37 (UTC) in region Campi Flegrei

A magnitude Md 1.1 earthquake occured in region: Campi Flegrei, on

  • 25-09-2023 17:29:37 (UTC)
  • 25-09-2023 19:29:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8250, 14.1060 at 1 km depth.

The earthquake was located by: Sala Operativa INGV-OV (Napoli).

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pozzuoli NA 3 81661 81661
Bacoli NA 4 26560 108221
Monte di Procida NA 5 12886 121107
Quarto NA 7 40930 162037
Procida NA 9 10530 172567
Marano di Napoli NA 11 59874 232441
Qualiano NA 11 25702 258143
Calvizzano NA 12 12329 270472
Napoli NA 12 974074 1244546
Mugnano di Napoli NA 13 34828 1279374
Villaricca NA 13 31122 1310496
Giugliano in Campania NA 14 122974 1433470
Melito di Napoli NA 15 37826 1471296
Parete CE 16 11442 1482738
Sant'Antimo NA 16 33905 1516643
Ischia NA 17 19915 1536558
Casavatore NA 17 18661 1555219
Arzano NA 17 34886 1590105
Casandrino NA 18 14336 1604441
Lusciano CE 18 15362 1619803
Trentola-Ducenta CE 18 19429 1639232
Casoria NA 18 77642 1716874
Grumo Nevano NA 18 18061 1734935
Casapesenna CE 19 6987 1741922
Aversa CE 19 53047 1794969
Cesa CE 19 8841 1803810
Casamicciola Terme NA 19 8362 1812172
San Marcellino CE 19 14155 1826327
Frattamaggiore NA 19 30329 1856656
San Giorgio a Cremano NA 19 45557 1902213
Sant'Arpino CE 19 14307 1916520
San Cipriano d'Aversa CE 20 13653 1930173
Frignano CE 20 9008 1939181

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SE of Pozzuoli (81661 inhabitants)
11 Km SW of Marano di Napoli (59874 inhabitants)
12 Km W of Napoli (974074 inhabitants)
14 Km SW of Giugliano in Campania (122974 inhabitants)
18 Km SW of Casoria (77642 inhabitants)
19 Km SW of Aversa (53047 inhabitants)
20 Km W of Ercolano (53709 inhabitants)
20 Km SW of Afragola (65057 inhabitants)
21 Km W of Portici (55274 inhabitants)
22 Km W of Torre del Greco (86275 inhabitants)
26 Km SW of Acerra (59573 inhabitants)
34 Km SW of Caserta (76326 inhabitants)
35 Km W of Castellammare di Stabia (66466 inhabitants)
36 Km W of Scafati (50787 inhabitants)
52 Km W of Cava de' Tirreni (53659 inhabitants)
57 Km W of Salerno (135261 inhabitants)
59 Km W of Avellino (54857 inhabitants)
66 Km SW of Benevento (60091 inhabitants)
78 Km W of Battipaglia (50786 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
Rev200
Md 1.1 2023-09-25
17:29:37
40.825 14.1062 1 2023-09-25
18:02:00
Sala Operativa INGV-OV (Napoli) 121452771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-25 17:29:37
Latitude 40.8250
Longitude 14.1062
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV-OV#SiSmi
Event type earthquake
Origin ID 121452771

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 1
Number of defining phases 1
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree)
Epicentral distance of station farthest from the epicenter (degree)
Number of stations at which the event was observed 0
Number of stations from which data was used for origin computation 0
Magnitude information

Md:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 121452771
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2023-09-25 18:02:00
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