Earthquake with magnitude of Md 1.3 on date 24-12-2022 and time 15:46:49 (Italy) in region Ischia

A magnitude Md 1.3 earthquake occured in region: Ischia, on

  • 24-12-2022 14:46:49 (UTC)
  • 24-12-2022 15:46:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.7220, 13.8910 at 1 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Serrara Fontana NA 1 3173 3173
Barano d'Ischia NA 3 10113 13286
Casamicciola Terme NA 3 8362 21648
Forio NA 3 17615 39263
Lacco Ameno NA 4 4853 44116
Ischia NA 5 19915 64031
Procida NA 12 10530 74561
Monte di Procida NA 16 12886 87447
Bacoli NA 18 26560 114007

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Pozzuoli (81661 inhabitants)
32 Km SW of Marano di Napoli (59874 inhabitants)
33 Km W of Napoli (974074 inhabitants)
35 Km SW of Giugliano in Campania (122974 inhabitants)
39 Km SW of Aversa (53047 inhabitants)
39 Km SW of Casoria (77642 inhabitants)
40 Km W of Ercolano (53709 inhabitants)
41 Km W of Portici (55274 inhabitants)
41 Km W of Torre del Greco (86275 inhabitants)
42 Km SW of Afragola (65057 inhabitants)
48 Km SW of Acerra (59573 inhabitants)
50 Km W of Castellammare di Stabia (66466 inhabitants)
54 Km W of Scafati (50787 inhabitants)
54 Km SW of Caserta (76326 inhabitants)
69 Km W of Cava de' Tirreni (53659 inhabitants)
73 Km W of Salerno (135261 inhabitants)
79 Km W of Avellino (54857 inhabitants)
88 Km SW of Benevento (60091 inhabitants)
93 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
Bulletin
Rev1000
Md 1.3 2022-12-24
14:46:49
40.7217 13.8912 1 2024-03-01
15:28:26
Bollettino Sismico Italiano INGV 118279581
Reviewed
Rev200
Md 1.4 2022-12-24
14:46:49
40.7225 13.8858 2 2023-06-10
17:11:37
Sala Operativa INGV-OV (Napoli) 113057851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-24 14:46:49 ± 0.34
Latitude 40.7217 ± 0.0027
Longitude 13.8912 ± 0.0036
Depth (km) 1 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118279581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 66
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 143
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.02878
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 5
Magnitudes information

Md:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 5
Type of magnitude Md
Reference to an origin 118279581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-10 17:11:26

Md:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 113057851
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2022-12-24 14:55:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2022-12-24T14:47:09.07 3.0 undecidable manual S 1.4 0
IV.MCRV.HHZ. 2022-12-24T14:47:05.19 3.0 undecidable manual P -1.48 0
IV.PAOL.HHZ. 2022-12-24T14:46:57.75 3.0 undecidable manual P -0.93 0
IV.IOCA.HHZ. 2022-12-24T14:46:52.16 0.3 undecidable manual S 17 2.8971 113 -0.23 72
IV.ICVJ.EHE. 2022-12-24T14:46:51.71 0.3 undecidable manual S 8 2.3976 117 -0.27 72
IV.IFOR.HHZ. 2022-12-24T14:46:51.94 0.3 undecidable manual S 249 3.1968 111 -0.74 62
IV.IMTC.HHZ. 2022-12-24T14:46:51.37 0.3 undecidable manual S 266 1.2987 134 0.3 71
IV.IFOR.HHZ. 2022-12-24T14:46:51.17 0.1 undecidable manual P 249 3.1968 111 -0.04 100
IV.IBCM.EHE. 2022-12-24T14:46:51.74 0.3 undecidable manual S 120 2.3976 117 -0.23 72
IV.IOCA.HHZ. 2022-12-24T14:46:51.19 0.1 undecidable manual P 17 2.8971 113 0.14 98
IV.IBCM.EHE. 2022-12-24T14:46:50.95 0.1 undecidable manual P 120 2.3976 117 0.13 98
IV.ICVJ.EHE. 2022-12-24T14:46:50.99 0.1 undecidable manual P 8 2.3976 117 0.16 98
IV.IMTC.HHZ. 2022-12-24T14:46:50.73 0.1 negative manual P 266 1.2987 134 0.42 93
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