Earthquake with magnitude of ML 1.1 on date 20-09-2021 and time 08:43:46 (Italy) in region 5 km S Bagnoli Irpino (AV)

A magnitude ML 1.1 earthquake occured in region: 5 km S Bagnoli Irpino (AV), on

  • 20-09-2021 06:43:46 (UTC)
  • 20-09-2021 08:43:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.794, 15.086 at 7 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
Bagnoli Irpino AV 5 3217 3217
Acerno SA 6 2783 6000
Montella AV 8 7780 13780
Cassano Irpino AV 10 982 14762
Nusco AV 10 4203 18965
Calabritto AV 11 2391 21356
Senerchia AV 12 842 22198
Caposele AV 12 3483 25681
Lioni AV 13 6201 31882
Montecorvino Rovella SA 14 12739 44621
Campagna SA 14 16703 61324
Giffoni Valle Piana SA 15 12001 73325
Teora AV 16 1537 74862
Castelfranci AV 16 2041 76903
Olevano sul Tusciano SA 16 6878 83781
Montemarano AV 16 2851 86632
Valva SA 17 1643 88275
Torella dei Lombardi AV 17 2144 90419
Sant'Angelo dei Lombardi AV 17 4250 94669
Oliveto Citra SA 17 3802 98471
Volturara Irpina AV 17 3289 101760
Giffoni Sei Casali SA 17 5264 107024
Castelvetere sul Calore AV 17 1615 108639
Montecorvino Pugliano SA 18 10701 119340
Laviano SA 19 1438 120778
Rocca San Felice AV 19 851 121629
Colliano SA 19 3638 125267
Serino AV 19 7034 132301
Eboli SA 20 40115 172416
San Cipriano Picentino SA 20 6631 179047
Morra De Sanctis AV 20 1297 180344
Santomenna SA 20 443 180787
Villamaina AV 20 995 181782

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Battipaglia (50786 inhabitants)
28 Km SE of Avellino (54857 inhabitants)
30 Km E of Salerno (135261 inhabitants)
34 Km E of Cava de' Tirreni (53659 inhabitants)
45 Km SE of Benevento (60091 inhabitants)
47 Km E of Scafati (50787 inhabitants)
52 Km E of Castellammare di Stabia (66466 inhabitants)
61 Km E of Torre del Greco (86275 inhabitants)
62 Km E of Portici (55274 inhabitants)
62 Km E of Ercolano (53709 inhabitants)
62 Km E of Acerra (59573 inhabitants)
63 Km W of Potenza (67122 inhabitants)
67 Km E of Afragola (65057 inhabitants)
68 Km E of Casoria (77642 inhabitants)
70 Km E of Napoli (974074 inhabitants)
71 Km E of Caserta (76326 inhabitants)
76 Km E of Giugliano in Campania (122974 inhabitants)
76 Km E of Marano di Napoli (59874 inhabitants)
77 Km E of Aversa (53047 inhabitants)
84 Km SW of Foggia (151991 inhabitants)
84 Km E of Pozzuoli (81661 inhabitants)
87 Km SW of Cerignola (58396 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2021-09-20
06:43:46
40.7937 15.0857 7 2021-09-20
06:52:56
Sala Sismica INGV-Roma 95655061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-20 06:43:46 ± 0.85
Latitude 40.7937 ± 0.0153
Longitude 15.0857 ± 0.0570
Depth (km) 7 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95655061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4850
Semi-minor axis of confidence ellipse (meter) 1550
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 4850
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 269
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.16098
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 3
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 95655061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-20 06:52:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-09-20T06:45:34.25 3.0 undecidable manual Sg 19.139999 0
CH.BNALP.HHZ. 2021-09-20T06:45:20.44 3.0 positive manual Pn -1.86 0
IV.ISPIC.EHZ. 2021-09-20T06:45:20.70 3.0 undecidable manual Sn -9.99 0
AC.VLO.HHZ. 2021-09-20T06:45:18.03 3.0 undecidable manual Sn 4.5 0
IV.ERC.EHZ. 2021-09-20T06:45:17.27 3.0 undecidable manual Sg 5.33 0
IV.BRSN.HNZ. 2021-09-20T06:45:11.23 3.0 undecidable manual Sn -4.02 0
IV.NARO.HHZ. 2021-09-20T06:45:10.05 3.0 undecidable manual Sg 13.33 0
SL.LJU.BHZ. 2021-09-20T06:45:09.12 3.0 undecidable manual Pg 20.459999 0
IV.APEC.HHZ. 2021-09-20T06:45:09.12 3.0 undecidable manual Sg 11.74 0
IT.FIE.HGZ. 2021-09-20T06:45:08.83 3.0 undecidable manual Sn -6.33 0
IV.TREG.EHZ. 2021-09-20T06:45:08.67 3.0 negative manual Pg 16.950001 0
IV.PCRO.HNZ. 2021-09-20T06:45:00.01 3.0 undecidable manual Sg 11.35 0
IV.LADO.EHZ. 2021-09-20T06:44:59.27 3.0 undecidable manual Sg 12.94 0
IV.PE3.EHZ. 2021-09-20T06:44:57.29 3.0 undecidable manual Sn -2 0
MN.PDG.HHZ. 2021-09-20T06:44:52.23 3.0 negative manual Pg 21.540001 0
IV.ISPIC.HNZ. 2021-09-20T06:44:50.83 3.0 negative manual Pg 8.89 0
IV.NDIM.HHZ. 2021-09-20T06:44:46.10 3.0 undecidable manual Pn -0.03 0
MN.VAE.HHZ. 2021-09-20T06:44:40.16 3.0 undecidable manual Pg 7.44 0
IV.MNTP.HNZ. 2021-09-20T06:44:39.40 3.0 undecidable manual Sn 0.71 0
IV.IMOL.HNZ. 2021-09-20T06:44:36.08 3.0 undecidable manual Pn 0.74 0
IV.EFIU.HHZ. 2021-09-20T06:44:33.49 3.0 undecidable manual Pg 5.18 0
IV.MTRA.EHZ. 2021-09-20T06:44:29.01 3.0 undecidable manual S -2.38 0
IV.MMUR.HNZ. 2021-09-20T06:44:24.62 3.0 positive manual Pn 6.65 0
IV.PCRO.HNZ. 2021-09-20T06:44:18.02 3.0 undecidable manual P 0.38 0
IV.IST3.HHZ. 2021-09-20T06:44:09.13 3.0 negative manual Pn -5.5 0
IV.MGR.HHZ. 2021-09-20T06:43:55.16 3.0 undecidable manual Pn -3.02 0
IV.SNAL.HHZ. 2021-09-20T06:43:53.94 0.3 undecidable manual S 35 0.161 112 0.43 71
IX.SNR3.EHZ.02 2021-09-20T06:43:51.76 0.3 undecidable manual S 126 0.0998 123 0.38 73
IV.SNAL.HHZ. 2021-09-20T06:43:50.49 0.1 undecidable manual P 35 0.161 112 -0.19 100
IV.MCRV.HHZ. 2021-09-20T06:43:49.60 0.3 undecidable manual S 100 0.0639 135 -0.7 66
IX.SNR3.EHZ.02 2021-09-20T06:43:49.76 0.1 undecidable manual P 126 0.0998 123 0.3 99
IV.MCRV.HHZ. 2021-09-20T06:43:48.53 0.3 undecidable manual P 100 0.0639 135 -0.3 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:0.9 0.000143349625 0.2592 AML other m 2021-09-20T06:43:49.67
IV.MCRV.HHN. ML:1.2 0.000302719435 0.08 AML other m 2021-09-20T06:43:50.71
IX.SNR3.EHE.02 ML:0.9 9.8525015E-5 0.16 AML other m 2021-09-20T06:43:52.58
IX.SNR3.EHN.02 ML:1.1 0.00015787075 0.128 AML other m 2021-09-20T06:43:53.12
MN.VAE.HHE. ML:3.6 0.0002885 0.32 AML other m 2021-09-20T06:45:52.44
MN.VAE.HHN. ML:3.6 0.00025345745 0.3008 AML other m 2021-09-20T06:45:52.50
IX.SNR3.HNE.01 ML:1.2 0.0002167862 0.672 AML other m 2021-09-20T06:43:55.36
IX.SNR3.HNN.01 ML:1.2 0.000194300465 0.24 AML other m 2021-09-20T06:43:54.07
IV.SNAL.HHE. ML:1 9.4817795E-5 0.6592 AML other m 2021-09-20T06:43:59.78
IV.SNAL.HHN. ML:1.2 0.0001262401 1.7824 AML other m 2021-09-20T06:44:02.52
IV.SNAL.HNE. ML:1.1 0.00011169624 1.3376 AML other m 2021-09-20T06:44:01.36
IV.SNAL.HNN. ML:1.2 0.00013189185 1.76 AML other m 2021-09-20T06:44:02.50
IX.SRN3.HHE.02 ML:1.7 0.0001427547 0.112 AML other m 2021-09-20T06:43:54.36
IX.SRN3.HHN.02 ML:1.6 0.0001137382 0.112 AML other m 2021-09-20T06:43:53.63
IV.MGR.HNE. ML:2 0.000135284825 0.9504 AML other m 2021-09-20T06:44:28.03
IV.MGR.HNN. ML:2.1 0.00015472835 0.6112 AML other m 2021-09-20T06:44:30.51
IV.MGR.HHE. ML:1.1 1.338543E-5 1.4592 AML other m 2021-09-20T06:44:30.62
IV.MGR.HHN. ML:1.1 1.6002735E-5 1.2416 AML other m 2021-09-20T06:44:02.76
IV.IST3.HHE. ML:3.5 0.00075233785 0.4992 AML other m 2021-09-20T06:44:12.41
IV.IST3.HHN. ML:3.8 0.0016532815 0.64 AML other m 2021-09-20T06:44:10.93
IV.IST3.HNE. ML:3.4 0.0006948424 0.48 AML other m 2021-09-20T06:44:12.41
IV.IST3.HNN. ML:3.8 0.001581732 0.64 AML other m 2021-09-20T06:44:10.94
IV.PCRO.HNE. ML:3.3 0.000191028165 0.0896 AML other m 2021-09-20T06:45:12.67
IV.PCRO.HNN. ML:3.4 0.00022770785 0.352 AML other m 2021-09-20T06:45:30.47
IV.MMUR.HNE. ML:3.4 0.00024366695 0.9696 AML other m 2021-09-20T06:45:03.00
IV.MMUR.HNN. ML:3.9 0.0007886678 1.0208 AML other m 2021-09-20T06:45:16.47
IV.EFIU.HHE. ML:3.6 0.0003673831 0.0992 AML other m 2021-09-20T06:44:47.95
IV.EFIU.HHN. ML:3.6 0.00041821715 0.1184 AML other m 2021-09-20T06:45:08.13
IV.IMOL.HNE. ML:4.7 0.001507699 0.0608 AML other m 2021-09-20T06:45:21.73
IV.IMOL.HNN. ML:4.6 0.001320272 0.0608 AML other m 2021-09-20T06:44:58.29
IV.ISPIC.HNE. ML:3.7 0.0001954343 0.32 AML other m 2021-09-20T06:45:34.99
IV.ISPIC.HNN. ML:3.6 0.000173919 0.5696 AML other m 2021-09-20T06:45:31.47
IV.ISPIC.EHE. ML:3.2 6.5679335E-5 0.16 AML other m 2021-09-20T06:45:52.20
IV.ISPIC.EHN. ML:3.2 7.005696E-5 0.1408 AML other m 2021-09-20T06:45:47.32
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