Earthquake with magnitude of Md 2.4 on date 20-12-2020 and time 04:13:48 (Italy) in region 5 km SE Pozzuoli (NA)

A magnitude Md 2.4 earthquake occured in region: 5 km SE Pozzuoli (NA), on

  • 20-12-2020 03:13:48 (UTC)
  • 20-12-2020 04:13:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.82, 14.14 at 2 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 5 81661 81661
Bacoli NA 6 26560 108221
Quarto NA 6 40930 149151
Monte di Procida NA 8 12886 162037
Marano di Napoli NA 10 59874 221911
Napoli NA 10 974074 1195985
Calvizzano NA 10 12329 1208314
Qualiano NA 11 25702 1234016
Mugnano di Napoli NA 11 34828 1268844
Procida NA 12 10530 1279374
Villaricca NA 12 31122 1310496
Giugliano in Campania NA 13 122974 1433470
Melito di Napoli NA 14 37826 1471296
Casavatore NA 14 18661 1489957
Arzano NA 15 34886 1524843
Sant'Antimo NA 15 33905 1558748
Parete CE 15 11442 1570190
Casandrino NA 16 14336 1584526
Casoria NA 16 77642 1662168
San Giorgio a Cremano NA 16 45557 1707725
Grumo Nevano NA 16 18061 1725786
Lusciano CE 17 15362 1741148
Frattamaggiore NA 17 30329 1771477
Trentola-Ducenta CE 17 19429 1790906
Ercolano NA 17 53709 1844615
Cesa CE 17 8841 1853456
Aversa CE 18 53047 1906503
Sant'Arpino CE 18 14307 1920810
Portici NA 18 55274 1976084
Afragola NA 18 65057 2041141
San Marcellino CE 19 14155 2055296
Casapesenna CE 19 6987 2062283
Volla NA 19 23755 2086038
Frattaminore NA 19 16208 2102246
Succivo CE 19 8457 2110703
Ischia NA 19 19915 2130618
Crispano NA 19 12354 2142972
Cercola NA 19 18267 2161239
Cardito NA 19 22755 2183994
Orta di Atella CE 19 27191 2211185
Gricignano di Aversa CE 19 11881 2223066
Frignano CE 20 9008 2232074
Torre del Greco NA 20 86275 2318349
Carinaro CE 20 7181 2325530
San Cipriano d'Aversa CE 20 13653 2339183
San Sebastiano al Vesuvio NA 20 9196 2348379
Villa di Briano CE 20 7087 2355466
Teverola CE 20 14291 2369757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km SE of Pozzuoli (81661 inhabitants)
10 Km SW of Marano di Napoli (59874 inhabitants)
10 Km W of Napoli (974074 inhabitants)
13 Km SW of Giugliano in Campania (122974 inhabitants)
16 Km SW of Casoria (77642 inhabitants)
17 Km W of Ercolano (53709 inhabitants)
18 Km SW of Aversa (53047 inhabitants)
18 Km SW of Afragola (65057 inhabitants)
18 Km W of Portici (55274 inhabitants)
20 Km W of Torre del Greco (86275 inhabitants)
24 Km SW of Acerra (59573 inhabitants)
32 Km W of Castellammare di Stabia (66466 inhabitants)
32 Km SW of Caserta (76326 inhabitants)
34 Km W of Scafati (50787 inhabitants)
50 Km W of Cava de' Tirreni (53659 inhabitants)
55 Km W of Salerno (135261 inhabitants)
56 Km W of Avellino (54857 inhabitants)
64 Km SW of Benevento (60091 inhabitants)
75 Km W of Battipaglia (50786 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev200
Md 2.4 2020-12-20
03:13:48
40.82 14.14 2 2020-12-21
17:45:48
Sala Operativa INGV_OV (Napoli) 85606191
Reviewed
Rev200
Md 2.3 2020-12-20
03:13:48
40.82 14.14 2 2020-12-20
09:01:16
Sala Operativa INGV_OV (Napoli) 85572891
Reviewed
Rev200
Md 2.3 2020-12-20
03:13:48
40.82 14.14 2 2020-12-20
03:41:18
Sala Operativa INGV_OV (Napoli) 85566071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-20 03:13:48
Latitude 40.82
Longitude 14.14
Depth (km) 2 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV-OV#WinPick
Event type earthquake
Origin ID 85606191

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) 100
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
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) 0.06
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
Magnitudes information

Md:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 85606191
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2020-12-21 17:45:48

Md:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 85572891
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2020-12-20 09:01:16

Md:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 85566071
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2020-12-20 03:41:18
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download