Earthquake with magnitude of Md 1.1 on date 18-10-2021 and time 05:47:48 (UTC) in region Vesuvio

A magnitude Md 1.1 earthquake occured in region: Vesuvio, on

  • 18-10-2021 05:47:48 (UTC)
  • 18-10-2021 07:47:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.818, 14.436 at 1 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
Ottaviano NA 5 23860 34223
Terzigno NA 5 18968 53191
Trecase NA 5 9097 62288
Boscoreale NA 6 28072 90360
Somma Vesuviana NA 6 35233 125593
Massa di Somma NA 6 5444 131037
San Sebastiano al Vesuvio NA 6 9196 140233
San Giuseppe Vesuviano NA 6 30657 170890
Sant'Anastasia NA 6 27671 198561
Torre Annunziata NA 7 42789 241350
Pollena Trocchia NA 7 13562 254912
Torre del Greco NA 7 86275 341187
Portici NA 7 55274 396461
Ercolano NA 8 53709 450170
Cercola NA 8 18267 468437
San Giorgio a Cremano NA 9 45557 513994
Poggiomarino NA 9 21976 535970
San Gennaro Vesuviano NA 9 11966 547936
Pompei NA 9 25358 573294
Volla NA 10 23755 597049
Pomigliano d'Arco NA 11 39922 636971
Scafati SA 11 50787 687758
Castello di Cisterna NA 11 7869 695627
Brusciano NA 12 16466 712093
Palma Campania NA 12 15978 728071
Scisciano NA 12 5994 734065
Striano NA 12 8397 742462
Marigliano NA 12 30157 772619
Mariglianella NA 12 7787 780406
Saviano NA 12 15982 796388
San Vitaliano NA 12 6461 802849
Santa Maria la Carità NA 13 11722 814571
Casalnuovo di Napoli NA 13 49855 864426
Carbonara di Nola NA 14 2429 866855
San Marzano sul Sarno SA 14 10442 877297
Angri SA 14 34002 911299
Sant'Antonio Abate NA 14 19743 931042
San Valentino Torio SA 14 10947 941989
San Paolo Bel Sito NA 14 3513 945502
Castellammare di Stabia NA 14 66466 1011968
Nola NA 14 34431 1046399
Domicella AV 15 1862 1048261
Liveri NA 15 1607 1049868
Acerra NA 15 59573 1109441
Marzano di Nola AV 15 1727 1111168
Sarno SA 15 31529 1142697
Lettere NA 16 6188 1148885
Cimitile NA 16 7280 1156165
Casoria NA 16 77642 1233807
Napoli NA 16 974074 2207881
Casola di Napoli NA 16 3898 2211779
Afragola NA 16 65057 2276836
Gragnano NA 16 29136 2305972
Casamarciano NA 16 3289 2309261
Casavatore NA 16 18661 2327922
Sant'Egidio del Monte Albino SA 17 8909 2336831
Pago del Vallo di Lauro AV 17 1830 2338661
Corbara SA 17 2545 2341206
Vico Equense NA 17 20969 2362175
Camposano NA 17 5333 2367508
Pimonte NA 17 5980 2373488
Arzano NA 17 34886 2408374
Visciano NA 17 4454 2412828
Pagani SA 18 35834 2448662
Comiziano NA 18 1814 2450476
Lauro AV 18 3509 2453985
Taurano AV 18 1546 2455531
Cardito NA 19 22755 2478286
Cicciano NA 19 12906 2491192
Quindici AV 19 1938 2493130
Tufino NA 19 3776 2496906
Caivano NA 19 37879 2534785
Nocera Inferiore SA 19 46043 2580828
Meta NA 19 8015 2588843
Frattamaggiore NA 19 30329 2619172
Crispano NA 20 12354 2631526
Moschiano AV 20 1673 2633199
Grumo Nevano NA 20 18061 2651260

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NE 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)
15 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)
23 Km SE of Giugliano in Campania (122974 inhabitants)
26 Km SE of Aversa (53047 inhabitants)
26 Km NW of Cava de' Tirreni (53659 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)
52 Km W of Battipaglia (50786 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.1 2021-10-18
05:47:48
40.8182 14.4363 1 2021-10-18
05:53:58
Sala Operativa INGV-OV (Napoli) 96710971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-18 05:47:48
Latitude 40.8182
Longitude 14.4363
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV-OV#SiSmi
Event type earthquake
Origin ID 96710971

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) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
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) 0.03
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 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 96710971
Agency INGV
Autore Sala Operativa INGV-OV (Napoli)
Time of creation (UTC) 2021-10-18 05:53:58
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