Earthquake with magnitude of Md 1.8 on date 03-04-2020 and time 05:54:43 (UTC) in region 1 km SE Massa di Somma (NA)

A magnitude Md 1.8 earthquake occured in region: 1 km SE Massa di Somma (NA), on

  • 03-04-2020 05:54:43 (UTC)
  • 03-04-2020 07:54:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.84, 14.39 at 0 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Massa di Somma NA 1 5444 5444
San Sebastiano al Vesuvio NA 2 9196 14640
Pollena Trocchia NA 2 13562 28202
Sant'Anastasia NA 3 27671 55873
Portici NA 3 55274 111147
Cercola NA 4 18267 129414
San Giorgio a Cremano NA 5 45557 174971
Ercolano NA 5 53709 228680
Somma Vesuviana NA 5 35233 263913
Volla NA 6 23755 287668
Torre del Greco NA 6 86275 373943
Ottaviano NA 8 23860 397803
Pomigliano d'Arco NA 8 39922 437725
Trecase NA 9 9097 446822
Castello di Cisterna NA 9 7869 454691
Boscotrecase NA 9 10363 465054
Casalnuovo di Napoli NA 9 49855 514909
Brusciano NA 10 16466 531375
Terzigno NA 10 18968 550343
San Giuseppe Vesuviano NA 10 30657 581000
Boscoreale NA 10 28072 609072
Torre Annunziata NA 10 42789 651861
Mariglianella NA 11 7787 659648
Marigliano NA 11 30157 689805
Casoria NA 11 77642 767447
Afragola NA 12 65057 832504
Napoli NA 12 974074 1806578
Scisciano NA 12 5994 1812572
Casavatore NA 12 18661 1831233
San Gennaro Vesuviano NA 12 11966 1843199
Acerra NA 12 59573 1902772
San Vitaliano NA 12 6461 1909233
Saviano NA 13 15982 1925215
Arzano NA 13 34886 1960101
Poggiomarino NA 13 21976 1982077
Pompei NA 14 25358 2007435
Palma Campania NA 14 15978 2023413
Cardito NA 14 22755 2046168
Nola NA 15 34431 2080599
Frattamaggiore NA 15 30329 2110928
Scafati SA 15 50787 2161715
Caivano NA 15 37879 2199594
Crispano NA 16 12354 2211948
Grumo Nevano NA 16 18061 2230009
San Paolo Bel Sito NA 16 3513 2233522
Casandrino NA 16 14336 2247858
Striano NA 16 8397 2256255
Cimitile NA 16 7280 2263535
Carbonara di Nola NA 16 2429 2265964
Melito di Napoli NA 16 37826 2303790
Frattaminore NA 17 16208 2319998
Liveri NA 17 1607 2321605
Santa Maria la Carità NA 17 11722 2333327
Sant'Antimo NA 17 33905 2367232
Domicella AV 17 1862 2369094
Mugnano di Napoli NA 17 34828 2403922
Casamarciano NA 17 3289 2407211
Camposano NA 17 5333 2412544
Marzano di Nola AV 18 1727 2414271
Orta di Atella CE 18 27191 2441462
Sant'Arpino CE 18 14307 2455769
Castellammare di Stabia NA 18 66466 2522235
San Marzano sul Sarno SA 18 10442 2532677
Marano di Napoli NA 18 59874 2592551
Succivo CE 18 8457 2601008
Angri SA 18 34002 2635010
Sant'Antonio Abate NA 18 19743 2654753
Calvizzano NA 19 12329 2667082
Comiziano NA 19 1814 2668896
San Valentino Torio SA 19 10947 2679843
Giugliano in Campania NA 19 122974 2802817
Villaricca NA 19 31122 2833939
Cicciano NA 19 12906 2846845
Visciano NA 19 4454 2851299
Pago del Vallo di Lauro AV 19 1830 2853129
Cesa CE 19 8841 2861970
Sarno SA 19 31529 2893499
Vico Equense NA 20 20969 2914468
Tufino NA 20 3776 2918244
Lettere NA 20 6188 2924432
Casola di Napoli NA 20 3898 2928330
Gragnano NA 20 29136 2957466

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km E of Portici (55274 inhabitants)
5 Km NE of Ercolano (53709 inhabitants)
6 Km NE of Torre del Greco (86275 inhabitants)
11 Km SE of Casoria (77642 inhabitants)
12 Km SE of Afragola (65057 inhabitants)
12 Km E of Napoli (974074 inhabitants)
12 Km S of Acerra (59573 inhabitants)
15 Km NW of Scafati (50787 inhabitants)
18 Km NW of Castellammare di Stabia (66466 inhabitants)
18 Km E of Marano di Napoli (59874 inhabitants)
19 Km SE of Giugliano in Campania (122974 inhabitants)
22 Km SE of Aversa (53047 inhabitants)
25 Km E of Pozzuoli (81661 inhabitants)
27 Km S of Caserta (76326 inhabitants)
31 Km NW of Cava de' Tirreni (53659 inhabitants)
35 Km W of Avellino (54857 inhabitants)
36 Km NW of Salerno (135261 inhabitants)
46 Km SW of Benevento (60091 inhabitants)
56 Km W of Battipaglia (50786 inhabitants)
Recent and historical Seismicity
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
Rev 100 Md 1.8 2020-04-03
05:54:43
40.84 14.39 1 2020-04-03
06:07:29
Sala Sismica INGV-Roma 77819541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-03 05:54:43 ± 0.45
Latitude 40.84 ± 0.02
Longitude 14.39 ± 0.02
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77819541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1957
Semi-minor axis of confidence ellipse (meter) 1638
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 1960
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 324
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 8
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
Epicentral distance of station farthest from the epicenter (degree) 0.04137
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 4
Magnitude information

Md:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 4
Type of magnitude Md
Reference to an origin 77819541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-03 06:07:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2020-04-03T05:56:20.72 3.0 undecidable manual Sg 17.08 0
RF.GEPF.HHZ. 2020-04-03T05:56:12.94 3.0 positive manual Pg 16.690001 0
IV.SARZ.HHZ. 2020-04-03T05:56:12.46 3.0 undecidable manual Pn 8.95 0
IV.ACATE.EHZ. 2020-04-03T05:56:06.81 3.0 undecidable manual Sg 0.38 0
IV.HAGA.HHZ. 2020-04-03T05:55:59.46 3.0 undecidable manual Sg 1.36 0
IV.FIR.HHZ. 2020-04-03T05:55:51.28 3.0 undecidable manual Pg 15.04 0
IV.APEC.HHZ. 2020-04-03T05:55:41.34 3.0 positive manual Pg 15.11 0
IV.PE3.EHZ. 2020-04-03T05:55:37.14 3.0 positive manual Pg 9.88 0
IV.MAON.HHZ. 2020-04-03T05:55:30.77 3.0 undecidable manual Pn 4.54 0
IV.MF5.EHZ. 2020-04-03T05:55:21.49 3.0 undecidable manual Pg 7.72 0
IV.FIAM.HHZ. 2020-04-03T05:55:14.96 3.0 negative manual Pg 6.56 0
IV.VIVA.HHZ. 2020-04-03T05:55:07.55 3.0 undecidable manual Pn 0.49 0
IV.VTIR.HHZ. 2020-04-03T05:54:45.73 0.1 undecidable manual S 143 0.0414 96 0.29 95
IV.VBKN.HHZ. 2020-04-03T05:54:45.43 0.1 undecidable manual S 107 0.0306 98 0.4 92
IV.VBKN.HHZ. 2020-04-03T05:54:44.44 0.1 undecidable manual P 107 0.0306 98 -0.08 99
IV.VCRE.HHZ. 2020-04-03T05:54:44.96 0.1 undecidable manual S 123 0.0369 97 -0.28 95
IV.CRTO.HHZ. 2020-04-03T05:54:44.41 0.1 undecidable manual P 127 0.0297 98 -0.08 99
IV.VCRE.HHZ. 2020-04-03T05:54:44.62 0.1 undecidable manual P 123 0.0369 97 -0.03 100
IV.VTIR.HHZ. 2020-04-03T05:54:44.87 0.1 undecidable manual P 143 0.0414 96 0.11 98
IV.CRTO.HHZ. 2020-04-03T05:54:44.66 0.1 undecidable manual S 127 0.0297 98 -0.32 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRTO.HHZ. Md:1.6 16 END duration s
IV.VCRE.HHZ. Md:2 26 END duration s
IV.VTIR.HHZ. Md:1.6 16 END duration s
IV.VBKN.HHZ. Md:2 26 END duration s
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download