Earthquake with magnitude of Md 1.6 on date 07-04-2021 and time 04:08:45 (Italy) in region Campi Flegrei

A magnitude Md 1.6 earthquake occured in region: Campi Flegrei, on

  • 07-04-2021 02:08:45 (UTC)
  • 07-04-2021 04:08:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8240, 14.1530 at 2 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
Pozzuoli NA 6 81661 81661
Quarto NA 6 40930 122591
Bacoli NA 7 26560 149151
Napoli NA 9 974074 1123225
Monte di Procida NA 9 12886 1136111
Marano di Napoli NA 9 59874 1195985
Calvizzano NA 10 12329 1208314
Mugnano di Napoli NA 11 34828 1243142
Qualiano NA 11 25702 1268844
Villaricca NA 12 31122 1299966
Giugliano in Campania NA 12 122974 1422940
Procida NA 13 10530 1433470
Melito di Napoli NA 13 37826 1471296
Casavatore NA 13 18661 1489957
Arzano NA 14 34886 1524843
Sant'Antimo NA 14 33905 1558748
Casoria NA 15 77642 1636390
Parete CE 15 11442 1647832
Casandrino NA 15 14336 1662168
San Giorgio a Cremano NA 15 45557 1707725
Grumo Nevano NA 16 18061 1725786
Ercolano NA 16 53709 1779495
Frattamaggiore NA 17 30329 1809824
Lusciano CE 17 15362 1825186
Cesa CE 17 8841 1834027
Portici NA 17 55274 1889301
Trentola-Ducenta CE 17 19429 1908730
Sant'Arpino CE 17 14307 1923037
Afragola NA 17 65057 1988094
Aversa CE 17 53047 2041141
Volla NA 18 23755 2064896
Cercola NA 18 18267 2083163
Frattaminore NA 18 16208 2099371
Succivo CE 18 8457 2107828
Cardito NA 18 22755 2130583
Crispano NA 18 12354 2142937
San Marcellino CE 18 14155 2157092
Torre del Greco NA 18 86275 2243367
Casapesenna CE 19 6987 2250354
San Sebastiano al Vesuvio NA 19 9196 2259550
Orta di Atella CE 19 27191 2286741
Gricignano di Aversa CE 19 11881 2298622
Massa di Somma NA 19 5444 2304066
Carinaro CE 19 7181 2311247
Frignano CE 19 9008 2320255
Caivano NA 19 37879 2358134
Pollena Trocchia NA 19 13562 2371696
Teverola CE 20 14291 2385987
Villa di Briano CE 20 7087 2393074
Casalnuovo di Napoli NA 20 49855 2442929
San Cipriano d'Aversa CE 20 13653 2456582
Ischia NA 20 19915 2476497

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km E of Pozzuoli (81661 inhabitants)
9 Km W of Napoli (974074 inhabitants)
9 Km SW of Marano di Napoli (59874 inhabitants)
12 Km SW of Giugliano in Campania (122974 inhabitants)
15 Km SW of Casoria (77642 inhabitants)
16 Km W of Ercolano (53709 inhabitants)
17 Km W of Portici (55274 inhabitants)
17 Km SW of Afragola (65057 inhabitants)
17 Km S of Aversa (53047 inhabitants)
18 Km W of Torre del Greco (86275 inhabitants)
23 Km SW of Acerra (59573 inhabitants)
31 Km W of Castellammare di Stabia (66466 inhabitants)
32 Km SW of Caserta (76326 inhabitants)
33 Km W of Scafati (50787 inhabitants)
49 Km W of Cava de' Tirreni (53659 inhabitants)
54 Km W of Salerno (135261 inhabitants)
55 Km W of Avellino (54857 inhabitants)
63 Km SW of Benevento (60091 inhabitants)
74 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
Bulletin
Rev1000
Md 1.6 2021-04-07
02:08:45
40.8242 14.1533 2 2021-07-12
16:55:12
Bollettino Sismico Italiano INGV 90478561
Reviewed
Rev200
Md 1.9 2021-04-07
02:08:45
40.8297 14.1497 2 2021-05-25
10:22:22
Sala Operativa INGV_OV (Napoli) 88863311
Reviewed
Rev200
Md 1.5 2021-04-07
02:08:45
40.8297 14.1497 2 2021-05-25
10:22:06
Sala Operativa INGV_OV (Napoli) 88862031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-07 02:08:45 ± 0.17
Latitude 40.8242 ± 0.0036
Longitude 14.1533 ± 0.0036
Depth (km) 2 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90478561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 482
Semi-minor axis of confidence ellipse (meter) 127
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 325
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.06745
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 8
Magnitudes information

Md:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 88862031
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2021-04-07 02:28:01

Md:1.6

Field Value
Value 1.6
Uncertainty 0.9
Num. used stations 7
Type of magnitude Md
Reference to an origin 90478561
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-25 10:21:43

Md:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations
Type of magnitude Md
Reference to an origin 88863311
Agency INGV
Autore Sala Operativa INGV_OV (Napoli)
Time of creation (UTC) 2021-04-07 02:44:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MMGO.HHZ. 2021-04-07T02:10:05.23 3.0 undecidable manual Sg -0.65 0
IX.STN3.HHZ.02 2021-04-07T02:09:09.17 3.0 negative manual Pg 3.77 0
IV.SGO.HNZ. 2021-04-07T02:09:02.10 3.0 undecidable manual Pn 0.29 0
IV.SAMA.EHZ. 2021-04-07T02:08:51.60 3.0 undecidable manual P -0.11 0
IV.CMIS.HHE. 2021-04-07T02:08:49.19 0.3 undecidable manual P 227 7.4814 106 -0.54 66
IV.CMSN.HHZ. 2021-04-07T02:08:48.77 0.6 undecidable manual S 57 2.7972 128 -0.22 48
IX.NAPI.HNZ.01 2021-04-07T02:08:48.68 0.6 undecidable manual S 52 2.7972 128 -0.3 47
IV.CPIS.HHZ. 2021-04-07T02:08:47.06 0.1 undecidable manual P 316 0.7992 161 0.28 95
IV.CSOB.HHZ. 2021-04-07T02:08:47.74 0.6 undecidable manual S 295 0.7992 159 -0.05 50
IV.COLB.HHZ. 2021-04-07T02:08:47.85 0.3 undecidable manual S 220 0.7992 160 0.08 74
IV.CMSN.HHZ. 2021-04-07T02:08:47.52 0.1 undecidable manual P 57 2.7972 128 0.05 99
IX.NAPI.HNZ.01 2021-04-07T02:08:47.55 0.1 undecidable manual P 52 2.7972 128 0.08 99
IV.CSFT.HHZ. 2021-04-07T02:08:47.65 0.6 undecidable manual S 295 1.2987 150 -0.32 47
IV.CSOB.HHZ. 2021-04-07T02:08:47.01 0.1 undecidable manual P 295 0.7992 159 0.21 96
IV.CPIS.HHZ. 2021-04-07T02:08:47.60 0.3 undecidable manual S 316 0.7992 161 -0.16 73
IV.CAAM.HHN. 2021-04-07T02:08:47.93 0.6 undecidable manual S 246 1.1988 152 0.01 50
IV.CAAM.HHN. 2021-04-07T02:08:46.96 0.1 undecidable manual P 246 1.1988 152 0.09 99
IV.COLB.HHZ. 2021-04-07T02:08:46.91 0.1 undecidable manual P 220 0.7992 160 0.12 98
IV.CSFT.HHZ. 2021-04-07T02:08:46.93 0.1 negative manual P 295 1.2987 150 0.03 100
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