Earthquake with magnitude of Md 1.1 on date 21-07-2020 and time 21:09:34 (UTC) in region 5 km NW Boscotrecase (NA)

A magnitude Md 1.1 earthquake occured in region: 5 km NW Boscotrecase (NA), on

  • 21-07-2020 21:09:34 (UTC)
  • 21-07-2020 23:09:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8160, 14.4390 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
Boscotrecase NA 5 10363 10363
Trecase NA 5 9097 19460
Terzigno NA 5 18968 38428
Ottaviano NA 5 23860 62288
Boscoreale NA 5 28072 90360
Somma Vesuviana NA 6 35233 125593
San Giuseppe Vesuviano NA 6 30657 156250
Massa di Somma NA 6 5444 161694
San Sebastiano al Vesuvio NA 6 9196 170890
Torre Annunziata NA 6 42789 213679
Sant'Anastasia NA 7 27671 241350
Torre del Greco NA 7 86275 327625
Pollena Trocchia NA 7 13562 341187
Portici NA 7 55274 396461
Ercolano NA 8 53709 450170
Cercola NA 8 18267 468437
Poggiomarino NA 9 21976 490413
San Giorgio a Cremano NA 9 45557 535970
Pompei NA 9 25358 561328
San Gennaro Vesuviano NA 9 11966 573294
Scafati SA 11 50787 624081
Volla NA 11 23755 647836
Pomigliano d'Arco NA 11 39922 687758
Palma Campania NA 12 15978 703736
Castello di Cisterna NA 12 7869 711605
Striano NA 12 8397 720002
Brusciano NA 12 16466 736468
Scisciano NA 12 5994 742462
Santa Maria la Carità NA 12 11722 754184
Saviano NA 12 15982 770166
Marigliano NA 12 30157 800323
Mariglianella NA 13 7787 808110
San Vitaliano NA 13 6461 814571
Casalnuovo di Napoli NA 13 49855 864426
Carbonara di Nola NA 13 2429 866855
San Marzano sul Sarno SA 13 10442 877297
Angri SA 14 34002 911299
Sant'Antonio Abate NA 14 19743 931042
Castellammare di Stabia NA 14 66466 997508
San Valentino Torio SA 14 10947 1008455
San Paolo Bel Sito NA 14 3513 1011968
Domicella AV 14 1862 1013830
Nola NA 15 34431 1048261
Liveri NA 15 1607 1049868
Sarno SA 15 31529 1081397
Lettere NA 15 6188 1087585
Marzano di Nola AV 15 1727 1089312
Casola di Napoli NA 15 3898 1093210
Gragnano NA 16 29136 1122346
Acerra NA 16 59573 1181919
Cimitile NA 16 7280 1189199
Napoli NA 16 974074 2163273
Casoria NA 16 77642 2240915
Sant'Egidio del Monte Albino SA 16 8909 2249824
Afragola NA 16 65057 2314881
Casamarciano NA 16 3289 2318170
Corbara SA 17 2545 2320715
Casavatore NA 17 18661 2339376
Vico Equense NA 17 20969 2360345
Pago del Vallo di Lauro AV 17 1830 2362175
Pimonte NA 17 5980 2368155
Camposano NA 17 5333 2373488
Pagani SA 17 35834 2409322
Visciano NA 18 4454 2413776
Arzano NA 18 34886 2448662
Lauro AV 18 3509 2452171
Comiziano NA 18 1814 2453985
Taurano AV 18 1546 2455531
Quindici AV 19 1938 2457469
Cicciano NA 19 12906 2470375
Nocera Inferiore SA 19 46043 2516418
Tufino NA 19 3776 2520194
Cardito NA 19 22755 2542949
Meta NA 19 8015 2550964
Caivano NA 20 37879 2588843
Moschiano AV 20 1673 2590516
Frattamaggiore NA 20 30329 2620845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km E of Torre del Greco (86275 inhabitants)
7 Km E of Portici (55274 inhabitants)
8 Km E of Ercolano (53709 inhabitants)
11 Km NW of Scafati (50787 inhabitants)
14 Km N of Castellammare di Stabia (66466 inhabitants)
16 Km SE of Acerra (59573 inhabitants)
16 Km E of Napoli (974074 inhabitants)
16 Km SE of Casoria (77642 inhabitants)
16 Km SE of Afragola (65057 inhabitants)
23 Km E of Marano di Napoli (59874 inhabitants)
24 Km SE of Giugliano in Campania (122974 inhabitants)
26 Km NW of Cava de' Tirreni (53659 inhabitants)
26 Km SE of Aversa (53047 inhabitants)
29 Km E of Pozzuoli (81661 inhabitants)
30 Km S of Caserta (76326 inhabitants)
31 Km NW of Salerno (135261 inhabitants)
32 Km W of Avellino (54857 inhabitants)
45 Km SW of Benevento (60091 inhabitants)
51 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 2020-07-21
21:09:34
40.8155 14.4388 2 2020-07-21
21:23:21
Sala Operativa INGV_OV (Napoli) 81224231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-21 21:09:34
Latitude 40.8155
Longitude 14.4388
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 81224231

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) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 200
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) 0.07
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 0.1
Num. used stations
Type of magnitude Md
Reference to an origin 81224231
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2020-07-21 21:23:21
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