Earthquake with magnitude of ML 1.9 on date 26-04-2020 and time 04:41:13 (Italy) in region 2 km S Quarto (NA)

A magnitude ML 1.9 earthquake occured in region: 2 km S Quarto (NA), on

  • 26-04-2020 02:41:13 (UTC)
  • 26-04-2020 04:41:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.86, 14.15 at 5 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
Quarto NA 2 40930 40930
Pozzuoli NA 5 81661 122591
Marano di Napoli NA 6 59874 182465
Calvizzano NA 7 12329 194794
Qualiano NA 7 25702 220496
Mugnano di Napoli NA 8 34828 255324
Villaricca NA 8 31122 286446
Napoli NA 9 974074 1260520
Bacoli NA 9 26560 1287080
Giugliano in Campania NA 9 122974 1410054
Melito di Napoli NA 10 37826 1447880
Monte di Procida NA 11 12886 1460766
Sant'Antimo NA 11 33905 1494671
Parete CE 11 11442 1506113
Casavatore NA 12 18661 1524774
Arzano NA 12 34886 1559660
Casandrino NA 12 14336 1573996
Casoria NA 13 77642 1651638
Grumo Nevano NA 13 18061 1669699
Lusciano CE 13 15362 1685061
Trentola-Ducenta CE 14 19429 1704490
Cesa CE 14 8841 1713331
Aversa CE 14 53047 1766378
Frattamaggiore NA 14 30329 1796707
Sant'Arpino CE 14 14307 1811014
Procida NA 15 10530 1821544
San Marcellino CE 15 14155 1835699
Casapesenna CE 15 6987 1842686
Succivo CE 15 8457 1851143
Frattaminore NA 15 16208 1867351
Afragola NA 15 65057 1932408
Frignano CE 16 9008 1941416
Crispano NA 16 12354 1953770
Gricignano di Aversa CE 16 11881 1965651
Orta di Atella CE 16 27191 1992842
Cardito NA 16 22755 2015597
Carinaro CE 16 7181 2022778
San Giorgio a Cremano NA 16 45557 2068335
Villa di Briano CE 16 7087 2075422
Teverola CE 16 14291 2089713
San Cipriano d'Aversa CE 16 13653 2103366
Volla NA 17 23755 2127121
Casaluce CE 17 10078 2137199
Caivano NA 17 37879 2175078
Casal di Principe CE 17 21389 2196467
Ercolano NA 17 53709 2250176
Cercola NA 18 18267 2268443
Portici NA 18 55274 2323717
Casalnuovo di Napoli NA 18 49855 2373572
Villa Literno CE 18 11985 2385557
San Sebastiano al Vesuvio NA 19 9196 2394753
Massa di Somma NA 19 5444 2400197
Pollena Trocchia NA 19 13562 2413759
Torre del Greco NA 20 86275 2500034

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km E of Pozzuoli (81661 inhabitants)
6 Km SW of Marano di Napoli (59874 inhabitants)
9 Km W of Napoli (974074 inhabitants)
9 Km SW of Giugliano in Campania (122974 inhabitants)
13 Km W of Casoria (77642 inhabitants)
14 Km SW of Aversa (53047 inhabitants)
15 Km W of Afragola (65057 inhabitants)
17 Km W of Ercolano (53709 inhabitants)
18 Km W of Portici (55274 inhabitants)
20 Km W of Torre del Greco (86275 inhabitants)
21 Km W of Acerra (59573 inhabitants)
29 Km SW of Caserta (76326 inhabitants)
33 Km NW of Castellammare di Stabia (66466 inhabitants)
34 Km W of Scafati (50787 inhabitants)
50 Km W of Cava de' Tirreni (53659 inhabitants)
55 Km W of Avellino (54857 inhabitants)
55 Km W of Salerno (135261 inhabitants)
61 Km SW of Benevento (60091 inhabitants)
76 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 past 72 hours (3 days) from the time this page has been generated. 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 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
Bulletin
Rev1000
ML 1.9 2020-04-26
02:41:13
40.86 14.15 5 2020-07-18
21:08:40
Bollettino Sismico Italiano INGV 80265231
Reviewed
Rev200
Md 2.5 2020-04-26
02:41:13
40.83 14.15 2 2020-04-26
03:14:29
Sala Operativa INGV-OV (Napoli) 78590261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-26 02:41:13 ± 0.07
Latitude 40.86 ± 0.01
Longitude 14.15 ± 0.01
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80265231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 978
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 162
Circular confidence region, given by single value of horizontal uncertainty (meter) 980
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
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) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.97217
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 80265231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-17 09:16:50

Md:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 78590261
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2020-04-26 03:14:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2020-04-26T02:41:32.12 0.6 undecidable manual P 316 0.9722 50 -0.54 37
IV.VAGA.HHZ. 2020-04-26T02:41:25.93 0.6 undecidable manual P 6 0.5612 50 0.29 43
IV.VENT.EHZ. 2020-04-26T02:41:25.28 0.3 undecidable manual P 264 0.5549 50 -0.24 65
IV.VITU.HHZ. 2020-04-26T02:41:24.20 0.3 undecidable manual P 48 0.4865 50 -0.16 67
IV.PAOL.HHN. 2020-04-26T02:41:22.17 0.6 undecidable manual P 61 0.3597 97 0.34 44
IV.PIGN.HHZ. 2020-04-26T02:41:21.14 0.6 undecidable manual P 4 0.3435 97 -0.33 44
IV.ICAI.EHZ. 2020-04-26T02:41:20.79 0.3 undecidable manual S 228 0.188 102 -0.41 67
IV.IFOR.HHZ. 2020-04-26T02:41:20.10 0.6 undecidable manual P 237 0.2671 99 0.32 45
IV.IMTC.HHZ. 2020-04-26T02:41:19.65 0.3 undecidable manual P 237 0.2482 99 0.27 68
IV.IOCA.HHZ. 2020-04-26T02:41:19.00 0.3 undecidable manual P 240 0.2194 101 0.26 69
IV.CRTO.HHZ. 2020-04-26T02:41:18.54 0.1 undecidable manual P 100 0.2086 101 0.04 96
IV.VTIR.HHZ. 2020-04-26T02:41:18.21 0.6 undecidable manual P 104 0.2131 101 -0.4 45
IV.ICAI.EHZ. 2020-04-26T02:41:18.08 0.3 undecidable manual P 228 0.188 102 0.02 73
IV.VVDG.HHZ. 2020-04-26T02:41:18.46 0.3 undecidable manual P 96 0.2077 101 -0.03 72
IV.VCRE.HHZ. 2020-04-26T02:41:18.69 0.1 undecidable manual P 100 0.2158 101 0.03 96
IV.VBKN.HHZ. 2020-04-26T02:41:18.65 0.6 undecidable manual P 97 0.2131 101 0.05 48
IV.OVO.HHZ. 2020-04-26T02:41:18.14 0.6 undecidable manual P 99 0.1889 102 0.07 48
IV.VPOB.HHZ. 2020-04-26T02:41:18.08 0.3 undecidable manual P 92 0.1763 103 0.28 69
IV.CMSN.HHZ. 2020-04-26T02:41:16.18 0.3 undecidable manual S 129 0.0306 144 0.44 69
IV.CFB3.HHZ. 2020-04-26T02:41:16.61 0.3 undecidable manual S 195 0.0495 130 0.35 70
IV.CPOZ.HHZ. 2020-04-26T02:41:16.33 0.1 undecidable manual S 214 0.0432 133 0.25 95
IV.CMIS.HHZ. 2020-04-26T02:41:16.07 0.1 undecidable manual P 211 0.0917 114 0.06 98
IV.CFB3.HHZ. 2020-04-26T02:41:15.06 0.1 undecidable manual P 195 0.0495 130 -0.15 97
IV.CAAM.HHZ. 2020-04-26T02:41:15.70 0.1 undecidable manual S 191 0.0378 137 -0.23 96
IV.CMSN.HHZ. 2020-04-26T02:41:15.18 0.1 undecidable manual P 129 0.0306 144 0.27 95
IV.CFMN.HHZ. 2020-04-26T02:41:15.59 0.1 undecidable manual P 241 0.0495 130 0.38 92
IX.NAPI.HNZ.01 2020-04-26T02:41:15.56 0.3 undecidable manual S 128 0.0279 146 -0.14 73
IV.CSFT.HHZ. 2020-04-26T02:41:15.50 0.1 undecidable manual S 196 0.0288 145 -0.22 96
IV.CPOZ.HHZ. 2020-04-26T02:41:15.10 0.1 undecidable manual P 214 0.0432 133 -0.01 100
IV.CBAC.EHZ. 2020-04-26T02:41:15.86 0.3 undecidable manual P 227 0.0701 120 0.28 71
IV.CSOB.HHZ. 2020-04-26T02:41:15.50 0.1 undecidable manual S 189 0.0297 144 -0.24 96
IV.CSOB.HHZ. 2020-04-26T02:41:14.89 0.1 undecidable manual P 189 0.0297 144 -0.02 100
IV.CAAM.HHZ. 2020-04-26T02:41:14.84 0.1 undecidable manual P 191 0.0378 137 -0.18 97
IX.NAPI.HNZ.01 2020-04-26T02:41:14.17 0.3 undecidable manual P 128 0.0279 146 -0.71 62
IV.CSFT.HHZ. 2020-04-26T02:41:14.78 0.1 undecidable manual P 196 0.0288 145 -0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IMTC.HHE. ML:2.1 0.0006775 1.14 AML other m 2020-04-26T02:41:24.40
IV.VBKN.HHE. ML:2 0.000757 1.66 AML other m 2020-04-26T02:41:24.99
IV.VTIR.HHE. ML:1.6 0.0002855 1.74 AML other m 2020-04-26T02:41:25.89
IV.IMTC.HHN. ML:2.1 0.0006555 0.6 AML other m 2020-04-26T02:41:25.69
IV.IFOR.HHN. ML:2.8 0.00338 0.62 AML other m 2020-04-26T02:41:25.43
IV.VBKN.HHN. ML:2 0.0007575 0.46 AML other m 2020-04-26T02:41:25.84
IV.VTIR.HHN. ML:1.6 0.000269 0.94 AML other m 2020-04-26T02:41:26.14
IV.IOCA.HHE. ML:2.7 0.003305 0.6 AML other m 2020-04-26T02:41:26.63
IV.IFOR.HHE. ML:2.7 0.00256 1.08 AML other m 2020-04-26T02:41:27.33
IV.IOCA.HHN. ML:2.5 0.00213 0.74 AML other m 2020-04-26T02:41:29.68
IV.PIGN.HHE. ML:1.8 0.0002465 1.32 AML other m 2020-04-26T02:41:32.22
IV.PIGN.HHN. ML:1.7 0.000178 0.64 AML other m 2020-04-26T02:41:35.84
IV.VITU.HHN. ML:2.2 0.0004075 1.5 AML other m 2020-04-26T02:41:35.14
IV.VAGA.HHN. ML:2.1 0.00023644125 0.44 AML other m 2020-04-26T02:41:46.42
IV.VITU.HHE. ML:2.1 0.000302 0.5 AML other m 2020-04-26T02:41:47.65
IV.VAGA.HHE. ML:1.8 0.000128 0.62 AML other m 2020-04-26T02:41:50.21
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