Earthquake with magnitude of ML 2.0 on date 23-05-2021 and time 06:03:00 (Italy) in region 2 km S Bagnoli Irpino (AV)

A magnitude ML 2.0 earthquake occured in region: 2 km S Bagnoli Irpino (AV), on

  • 23-05-2021 04:03:00 (UTC)
  • 23-05-2021 06:03:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8190, 15.0740 at 8 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
Bagnoli Irpino AV 2 3217 3217
Montella AV 6 7780 10997
Cassano Irpino AV 7 982 11979
Nusco AV 8 4203 16182
Acerno SA 9 2783 18965
Lioni AV 12 6201 25166
Castelfranci AV 13 2041 27207
Calabritto AV 13 2391 29598
Caposele AV 13 3483 33081
Montemarano AV 13 2851 35932
Senerchia AV 14 842 36774
Torella dei Lombardi AV 14 2144 38918
Castelvetere sul Calore AV 14 1615 40533
Volturara Irpina AV 15 3289 43822
Sant'Angelo dei Lombardi AV 15 4250 48072
Giffoni Valle Piana SA 16 12001 60073
Teora AV 16 1537 61610
Montecorvino Rovella SA 16 12739 74349
Rocca San Felice AV 17 851 75200
Villamaina AV 17 995 76195
Campagna SA 17 16703 92898
Serino AV 17 7034 99932
Paternopoli AV 18 2384 102316
San Mango sul Calore AV 18 1185 103501
Giffoni Sei Casali SA 18 5264 108765
Santa Lucia di Serino AV 18 1402 110167
Olevano sul Tusciano SA 18 6878 117045
Chiusano di San Domenico AV 18 2277 119322
Morra De Sanctis AV 19 1297 120619
Valva SA 19 1643 122262
Salza Irpina AV 19 772 123034
Guardia Lombardi AV 19 1718 124752
Sorbo Serpico AV 19 583 125335
Solofra AV 19 12495 137830
Santo Stefano del Sole AV 19 2208 140038
San Michele di Serino AV 19 2530 142568
Oliveto Citra SA 20 3802 146370
Montecorvino Pugliano SA 20 10701 157071
Laviano SA 20 1438 158509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Battipaglia (50786 inhabitants)
26 Km E of Avellino (54857 inhabitants)
31 Km NE of Salerno (135261 inhabitants)
34 Km E of Cava de' Tirreni (53659 inhabitants)
42 Km SE of Benevento (60091 inhabitants)
47 Km E of Scafati (50787 inhabitants)
52 Km E of Castellammare di Stabia (66466 inhabitants)
60 Km E of Torre del Greco (86275 inhabitants)
61 Km E of Portici (55274 inhabitants)
61 Km E of Acerra (59573 inhabitants)
61 Km E of Ercolano (53709 inhabitants)
65 Km W of Potenza (67122 inhabitants)
65 Km E of Afragola (65057 inhabitants)
67 Km E of Casoria (77642 inhabitants)
68 Km E of Caserta (76326 inhabitants)
69 Km E of Napoli (974074 inhabitants)
74 Km E of Giugliano in Campania (122974 inhabitants)
75 Km E of Marano di Napoli (59874 inhabitants)
75 Km E of Aversa (53047 inhabitants)
82 Km SW of Foggia (151991 inhabitants)
83 Km E of Pozzuoli (81661 inhabitants)
86 Km SW of Cerignola (58396 inhabitants)
100 Km S of San Severo (53905 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.0 2021-05-23
04:03:00
40.8188 15.0737 9 2021-12-29
11:12:01
Bollettino Sismico Italiano INGV 90618171
Reviewed
Rev100
ML 1.9 2021-05-23
04:03:00
40.827 15.0867 9 2021-05-23
04:30:47
Sala Sismica INGV-Roma 90399821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-23 04:03:00 ± 0.09
Latitude 40.8188 ± 0.0054
Longitude 15.0737 ± 0.0083
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90618171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 647
Semi-minor axis of confidence ellipse (meter) 546
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.52970
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 26
Type of magnitude ML
Reference to an origin 90618171
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-30 03:47:06

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 90399821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-23 04:30:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-05-23T04:03:14.43 0.3 undecidable manual S 152 0.3732 50 0.27 69
IV.MRLC.HHZ. 2021-05-23T04:03:12.89 0.3 undecidable manual S 101 0.3202 50 0.28 70
IV.VVDG.HHE. 2021-05-23T04:03:11.40 0.1 undecidable manual P 272 0.4919 50 1.15 65
IX.COL3.HHZ.02 2021-05-23T04:03:10.39 0.6 undecidable manual S 124 0.2347 108 0.79 40
IV.CMPR.HHZ. 2021-05-23T04:03:10.64 0.3 undecidable manual P 161 0.5297 50 -0.26 67
IV.VBKN.HHN. 2021-05-23T04:03:10.12 0.1 undecidable manual P 272 0.4865 50 -0.04 95
IV.VITU.HHZ. 2021-05-23T04:03:10.48 1.0 undecidable manual P 318 0.4946 50 0.19 23
IV.CAFE.HHZ. 2021-05-23T04:03:10.27 0.6 undecidable manual S 30 0.2428 108 0.39 46
IX.SRN3.HNE. 2021-05-23T04:03:09.14 0.1 undecidable manual P 139 0.4425 50 -0.26 91
IV.PSB1.HNE. 2021-05-23T04:03:09.76 0.1 undecidable manual P 334 0.4506 50 0.22 92
IV.CRTO.HHE. 2021-05-23T04:03:09.67 0.1 undecidable manual P 270 0.4928 50 -0.59 83
IV.PAOL.HHN. 2021-05-23T04:03:09.33 0.1 undecidable manual P 299 0.4371 50 0.02 96
IV.SGTA.HNZ. 2021-05-23T04:03:08.65 0.1 undecidable manual P 35 0.3849 50 0.23 93
IX.RDM3.HHZ. 2021-05-23T04:03:08.63 0.1 undecidable manual P 81 0.3543 50 0.74 80
IX.RSF3.HNZ.02 2021-05-23T04:03:07.46 0.6 undecidable manual S 28 0.1646 115 0.38 47
IX.CSG3.HNE. 2021-05-23T04:03:07.00 0.1 undecidable manual P 90 0.2950 105 0.14 96
IV.CDRU.HHZ. 2021-05-23T04:03:07.88 0.1 undecidable manual P 152 0.3732 50 -0.33 91
IV.SNAL.HHZ. 2021-05-23T04:03:07.09 0.3 undecidable manual S 44 0.1475 117 0.6 66
IX.SSB3.HNE. 2021-05-23T04:03:06.34 0.1 undecidable manual P 24 0.2851 105 -0.3 93
IV.MRLC.HHZ. 2021-05-23T04:03:06.60 0.1 undecidable manual P 101 0.3202 50 -0.71 82
IV.SGO.HHE. 2021-05-23T04:03:06.95 0.1 undecidable manual P 145 0.3130 50 -0.24 94
IV.MRB1.HHZ. 2021-05-23T04:03:06.83 0.1 undecidable manual P 345 0.3139 50 -0.37 91
IX.CLT3.HHZ.02 2021-05-23T04:03:06.22 0.3 undecidable manual P 71 0.2635 106 0.03 74
IX.SNR3.HHZ.02 2021-05-23T04:03:06.08 0.6 undecidable manual S 133 0.1223 122 0.43 47
IX.PST3.HHZ. 2021-05-23T04:03:06.73 0.1 undecidable manual P 153 0.2878 105 0.02 99
IV.CAFE.HHZ. 2021-05-23T04:03:05.35 0.1 undecidable manual P 30 0.2428 108 -0.39 92
IX.COL3.HHZ.02 2021-05-23T04:03:05.56 0.1 undecidable manual P 124 0.2347 108 -0.02 100
IX.LIO3.HNZ.02 2021-05-23T04:03:05.66 0.1 undecidable manual S 46 0.1124 124 0.35 96
IX.AND3.HNZ. 2021-05-23T04:03:05.82 0.1 undecidable manual P 60 0.2248 109 0.45 92
IV.MCRV.HHZ. 2021-05-23T04:03:04.14 0.3 undecidable manual S 117 0.0800 134 -0.22 74
IX.MNT3.HHZ. 2021-05-23T04:03:04.23 0.3 undecidable manual S 290 0.0540 145 0.55 69
IX.CMP3.HHZ. 2021-05-23T04:03:04.99 0.6 undecidable manual P 178 0.1673 115 0.82 40
IX.LGS3.HNZ.01 2021-05-23T04:03:04.70 0.3 undecidable manual P 339 0.1790 113 0.29 72
IX.SNR3.HHZ.02 2021-05-23T04:03:03.46 0.1 undecidable manual P 133 0.1223 122 0.16 99
IX.RSF3.HNZ.02 2021-05-23T04:03:03.63 0.1 undecidable manual P 28 0.1646 115 -0.49 92
IV.SNAL.HHZ. 2021-05-23T04:03:03.67 0.1 negative manual P 44 0.1475 117 -0.11 100
IV.MCRV.HHZ. 2021-05-23T04:03:02.31 0.1 undecidable manual P 117 0.0800 134 -0.24 98
IX.MNT3.HHZ. 2021-05-23T04:03:02.32 0.3 undecidable manual P 290 0.0540 145 0.16 75
IX.LIO3.HNZ.02 2021-05-23T04:03:02.56 0.3 undecidable manual P 46 0.1124 124 -0.54 68
IX.NSC3.HNZ. 2021-05-23T04:03:01.52 0.6 undecidable manual S 53 0.0459 149 -2.01 20
IX.NSC3.HNZ. 2021-05-23T04:03:00.98 0.1 undecidable manual P 53 0.0459 149 -1.09 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:2.6 0.005688845 0.2208 AML other m 2021-05-23T04:03:04.61
IV.MCRV.HHN. ML:2.8 0.00865 0.28 AML other m 2021-05-23T04:03:04.60
IX.MNT3.HNE.01 ML:2.4 0.004184547 0.16 AML other m 2021-05-23T04:03:05.25
IX.MNT3.HHE.02 ML:2.4 0.004205420499999999 0.144 AML other m 2021-05-23T04:03:05.25
IX.MNT3.HNN.01 ML:2.6 0.00704 0.3 AML other m 2021-05-23T04:03:05.20
IX.MNT3.HHN.02 ML:2.6 0.007753047999999999 0.288 AML other m 2021-05-23T04:03:05.21
IV.SNAL.HHN. ML:2.5 0.0026667490000000004 1.3408 AML other m 2021-05-23T04:03:10.06
IV.SNAL.HHE. ML:2.6 0.0035150000000000003 0.46 AML other m 2021-05-23T04:03:10.38
IV.CAFE.HNE. ML:1.8 0.00035925735 0.5088 AML other m 2021-05-23T04:03:11.16
IV.CAFE.HHE. ML:1.8 0.0003305372 0.4608 AML other m 2021-05-23T04:03:11.17
IV.CAFE.HNN. ML:1.9 0.00044297715 0.5504 AML other m 2021-05-23T04:03:11.76
IV.CAFE.HHN. ML:1.9 0.00045306325 0.6016 AML other m 2021-05-23T04:03:12.99
IV.MRB1.HNE. ML:2.0 0.0004277678 0.5792 AML other m 2021-05-23T04:03:14.58
IV.MRLC.HHN. ML:1.8 0.0002585 0.38 AML other m 2021-05-23T04:03:14.84
IV.MRLC.HNN. ML:1.5 0.00012438905 0.4 AML other m 2021-05-23T04:03:14.64
IV.MRLC.HHE. ML:1.6 0.00016606105 1.52 AML other m 2021-05-23T04:03:14.88
IV.MRLC.HNE. ML:1.4 0.00008831728 0.4192 AML other m 2021-05-23T04:03:14.68
IV.CDRU.HHN. ML:1.5 0.00010046225999999999 0.24 AML other m 2021-05-23T04:03:15.81
IV.MRB1.HHE. ML:1.9 0.00035886635 0.4192 AML other m 2021-05-23T04:03:16.42
IV.MRB1.HHN. ML:2.1 0.0004695 1.5 AML other m 2021-05-23T04:03:17.83
IV.MRB1.HNN. ML:2.1 0.0005015000000000001 1.46 AML other m 2021-05-23T04:03:17.10
IV.CDRU.HHE. ML:1.6 0.000126893655 0.1408 AML other m 2021-05-23T04:03:17.32
IV.CMPR.HHN. ML:1.6 0.00008909374 0.32 AML other m 2021-05-23T04:03:23.92
IV.CMPR.HHE. ML:1.7 0.00011399999999999999 0.9 AML other m 2021-05-23T04:03:29.75
IV.SNAL.HNE. ML:2.6 0.0033348360000000003 0.48 AML other m 2021-05-23T04:03:10.37
IV.SNAL.HNN. ML:2.5 0.0028152895 0.7392 AML other m 2021-05-23T04:03:11.74
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download