Earthquake with magnitude of Md 1.1 on date 27-07-2020 and time 02:59:52 (Italy) in region 1 km N Serrara Fontana (NA)

A magnitude Md 1.1 earthquake occured in region: 1 km N Serrara Fontana (NA), on

  • 27-07-2020 00:59:52 (UTC)
  • 27-07-2020 02:59:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.72, 13.9 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
Serrara Fontana NA 1 3173 3173
Barano d'Ischia NA 2 10113 13286
Casamicciola Terme NA 3 8362 21648
Forio NA 4 17615 39263
Lacco Ameno NA 4 4853 44116
Ischia NA 5 19915 64031
Procida NA 12 10530 74561
Monte di Procida NA 16 12886 87447
Bacoli NA 18 26560 114007

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Pozzuoli (81661 inhabitants)
32 Km SW of Marano di Napoli (59874 inhabitants)
33 Km W of Napoli (974074 inhabitants)
35 Km SW of Giugliano in Campania (122974 inhabitants)
38 Km SW of Aversa (53047 inhabitants)
39 Km SW of Casoria (77642 inhabitants)
39 Km W of Ercolano (53709 inhabitants)
40 Km W of Portici (55274 inhabitants)
40 Km W of Torre del Greco (86275 inhabitants)
42 Km SW of Afragola (65057 inhabitants)
47 Km SW of Acerra (59573 inhabitants)
49 Km W of Castellammare di Stabia (66466 inhabitants)
53 Km W of Scafati (50787 inhabitants)
54 Km SW of Caserta (76326 inhabitants)
68 Km W of Cava de' Tirreni (53659 inhabitants)
73 Km W of Salerno (135261 inhabitants)
79 Km W of Avellino (54857 inhabitants)
87 Km SW of Benevento (60091 inhabitants)
93 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
Reviewed
Rev200
Md 1.1 2020-07-27
00:59:52
40.72 13.9 1 2020-07-27
01:11:07
Sala Operativa INGV_OV (Napoli) 81388021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-27 00:59:52
Latitude 40.72
Longitude 13.90
Depth (km) 1 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV-OV#WinPick
Event type earthquake
Origin ID 81388021

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) 200
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
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) 0.19
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 81388021
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2020-07-27 01:11:07
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