Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 04-04-2021 and time 02:10:53 (Italy) in region 2 km SE Arpaia (BN)

A magnitude ML 2.4 earthquake occured in region: 2 km SE Arpaia (BN), on

  • 04-04-2021 00:10:53 (UTC)
  • 04-04-2021 02:10:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.0190, 14.5660 at 9 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Arpaia BN 2 1992 1992
Paolisi BN 3 2072 4064
Forchia BN 3 1235 5299
Rotondi AV 3 3591 8890
Cervinara AV 4 9658 18548
Roccarainola NA 5 7082 25630
Airola BN 5 8195 33825
Arienzo CE 6 5365 39190
Cicciano NA 6 12906 52096
Bucciano BN 7 2100 54196
Moiano BN 7 4094 58290
Tufino NA 7 3776 62066
Avella AV 7 7890 69956
San Felice a Cancello CE 7 17568 87524
Comiziano NA 7 1814 89338
Camposano NA 8 5333 94671
Bonea BN 8 1448 96119
Sperone AV 8 3706 99825
Montesarchio BN 8 13500 113325
San Martino Valle Caudina AV 8 4884 118209
Baiano AV 9 4718 122927
Santa Maria a Vico CE 9 14022 136949
Cimitile NA 9 7280 144229
Sirignano AV 9 2933 147162
Casamarciano NA 10 3289 150451
Sant'Agata de' Goti BN 10 11216 161667
Quadrelle AV 10 1865 163532
Visciano NA 11 4454 167986
Nola NA 11 34431 202417
Mugnano del Cardinale AV 11 5373 207790
Durazzano BN 11 2230 210020
Pannarano BN 12 2130 212150
San Paolo Bel Sito NA 12 3513 215663
Cervino CE 12 5031 220694
San Vitaliano NA 13 6461 227155
Saviano NA 13 15982 243137
Roccabascerana AV 13 2354 245491
Liveri NA 13 1607 247098
Marzano di Nola AV 13 1727 248825
Scisciano NA 13 5994 254819
Tocco Caudio BN 13 1508 256327
Marigliano NA 14 30157 286484
Pago del Vallo di Lauro AV 14 1830 288314
Pietrastornina AV 14 1553 289867
Campoli del Monte Taburno BN 14 1546 291413
Valle di Maddaloni CE 14 2742 294155
Apollosa BN 14 2658 296813
Mariglianella NA 15 7787 304600
Arpaise BN 15 761 305361
Sant'Angelo a Scala AV 15 730 306091
Maddaloni CE 15 39166 345257
Domicella AV 16 1862 347119
Cautano BN 16 2044 349163
Carbonara di Nola NA 16 2429 351592
Frasso Telesino BN 16 2318 353910
Taurano AV 16 1546 355456
Dugenta BN 16 2798 358254
Brusciano NA 16 16466 374720
Lauro AV 17 3509 378229
Ceppaloni BN 17 3415 381644
Palma Campania NA 17 15978 397622
Melizzano BN 17 1858 399480
Summonte AV 17 1583 401063
San Leucio del Sannio BN 17 3106 404169
Castello di Cisterna NA 17 7869 412038
Ospedaletto d'Alpinolo AV 18 2145 414183
Castelpoto BN 18 1254 415437
San Gennaro Vesuviano NA 18 11966 427403
Altavilla Irpina AV 18 4196 431599
Moschiano AV 18 1673 433272
Foglianise BN 18 3385 436657
Mercogliano AV 18 12267 448924
Acerra NA 18 59573 508497
Quindici AV 19 1938 510435
Vitulano BN 19 2944 513379
San Marco Evangelista CE 19 6532 519911
Monteforte Irpino AV 19 11467 531378
Capriglia Irpina AV 19 2398 533776
Pomigliano d'Arco NA 19 39922 573698
Chianche AV 19 475 574173
Grottolella AV 19 1869 576042
Petruro Irpino AV 20 349 576391
Solopaca BN 20 3820 580211
Somma Vesuviana NA 20 35233 615444
Limatola BN 20 4073 619517

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Acerra (59573 inhabitants)
21 Km E of Caserta (76326 inhabitants)
22 Km SW of Benevento (60091 inhabitants)
23 Km NW of Avellino (54857 inhabitants)
24 Km E of Afragola (65057 inhabitants)
26 Km E of Casoria (77642 inhabitants)
28 Km NE of Portici (55274 inhabitants)
30 Km NE of Ercolano (53709 inhabitants)
30 Km N of Scafati (50787 inhabitants)
31 Km E of Aversa (53047 inhabitants)
31 Km NE of Torre del Greco (86275 inhabitants)
32 Km E of Giugliano in Campania (122974 inhabitants)
33 Km NE of Napoli (974074 inhabitants)
34 Km E of Marano di Napoli (59874 inhabitants)
37 Km N of Castellammare di Stabia (66466 inhabitants)
37 Km NW of Cava de' Tirreni (53659 inhabitants)
41 Km NW of Salerno (135261 inhabitants)
44 Km E of Pozzuoli (81661 inhabitants)
58 Km NW of Battipaglia (50786 inhabitants)
96 Km SW of Foggia (151991 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 		ML 2.4 2021-04-04
00:10:53		 41.0187 14.5663 9 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90642161
Reviewed
Rev100 		ML 2.4 2021-04-04
00:10:54		 41.0318 14.5053 8 2021-04-04
00:24:21		 Sala Sismica INGV-Roma 88754041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-04 00:10:53 ± 0.1
Latitude 41.0187 ± 0.0063
Longitude 14.5663 ± 0.0107
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 90642161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1018
Semi-minor axis of confidence ellipse (meter) 417
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 299
Circular confidence region, given by single value of horizontal uncertainty (meter) 1020.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.01259
Epicentral distance of station farthest from the epicenter (degree) 1.14933
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 90642161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-30 23:16:54

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 88754041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-04 00:24:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGRT.HHZ. 2021-04-04T00:11:16.63 0.3 undecidable manual P 50 127.5723 50 1.26 39
IV.INTR.HHZ. 2021-04-04T00:11:15.83 0.6 undecidable manual P 334 123.0879 50 1.15 28
IX.LIO3.HHZ.02 2021-04-04T00:11:11.09 0.6 undecidable manual S 104 53.2023 50 -0.09 47
IV.CMPR.HHZ. 2021-04-04T00:11:10.43 0.3 undecidable manual P 141 99.4227 50 -0.6 57
IV.PSB1.HHZ. 2021-04-04T00:11:05.00 0.6 undecidable manual S 42 30.5472 106 0.02 49
IV.PIGN.HHZ. 2021-04-04T00:11:05.84 0.6 undecidable manual S 302 38.0286 50 -1.3 31
IV.VTIR.HHZ. 2021-04-04T00:11:04.52 0.6 undecidable manual S 207 26.4513 108 0.91 38
IX.CMP3.HNE.02 2021-04-04T00:11:04.81 0.6 undecidable manual P 133 59.2962 50 -0.04 47
IV.CRTO.HHZ. 2021-04-04T00:11:04.53 0.6 undecidable manual S 209 24.9528 109 1.39 30
IV.CAAM.HHN. 2021-04-04T00:11:04.26 0.6 undecidable manual P 238 41.9247 50 2.09 17
IV.BSSO.HHZ. 2021-04-04T00:11:04.95 0.3 undecidable manual P 2 58.5969 50 0.22 68
IV.SNAL.HHZ. 2021-04-04T00:11:03.97 0.3 undecidable manual P 101 54.8007 50 -0.19 69
IV.MCRV.HHN. 2021-04-04T00:11:03.74 0.3 undecidable manual P 117 56.8986 50 -0.73 58
IV.VBKN.HHZ. 2021-04-04T00:11:03.45 0.6 undecidable manual S 209 23.8539 110 0.69 42
IX.LIO3.HHZ.02 2021-04-04T00:11:03.49 0.3 undecidable manual P 104 53.2023 50 -0.41 65
IV.VAGA.HHZ. 2021-04-04T00:11:03.71 0.6 undecidable manual P 328 52.0035 50 -0.02 48
IX.NSC3.HHZ.02 2021-04-04T00:11:03.29 0.3 undecidable manual P 112 50.3163 50 -0.17 69
IV.VVDG.HHE. 2021-04-04T00:11:03.37 0.6 undecidable manual S 211 23.5542 110 0.7 42
IV.VCRE.HHZ. 2021-04-04T00:11:03.39 0.6 undecidable manual S 207 24.8529 109 0.3 47
IX.BENI.HNE.01 2021-04-04T00:11:02.70 0.6 undecidable manual S 54 21.1677 112 0.81 40
IV.SACR.HNN. 2021-04-04T00:11:02.97 0.3 undecidable manual P 15 43.623 50 0.54 64
IX.MNT3.HHZ.02 2021-04-04T00:11:01.49 0.3 undecidable manual P 118 42.0246 50 -0.7 61
IV.VITU.HHZ. 2021-04-04T00:11:01.79 0.6 undecidable manual S 16 19.0698 114 0.58 44
IV.MRB1.HHZ. 2021-04-04T00:11:01.48 0.3 undecidable manual P 71 35.5422 50 0.29 69
IX.LGS3.HNE.01 2021-04-04T00:11:01.39 0.3 undecidable manual P 96 35.742 50 0.18 71
IV.PIGN.HHZ. 2021-04-04T00:11:00.92 0.1 undecidable manual P 302 38.0286 50 -0.65 83
IV.PSB1.HHZ. 2021-04-04T00:11:00.93 0.3 undecidable manual P 42 30.5472 106 0.6 64
IV.VEPO.HHZ. 2021-04-04T00:11:00.03 0.3 undecidable manual P 219 30.3474 106 -0.26 71
IV.VPOB.HHZ. 2021-04-04T00:10:59.21 0.3 undecidable manual P 220 23.9538 110 0.14 73
IV.VCRE.HHZ. 2021-04-04T00:10:59.31 0.3 undecidable manual P 207 24.8529 109 0.07 74
IX.BENI.HNE.01 2021-04-04T00:10:59.28 0.3 undecidable manual P 54 21.1677 112 0.74 62
IV.OVO.HHZ. 2021-04-04T00:10:59.14 0.3 undecidable manual P 214 25.5522 109 -0.22 72
IV.VTIR.HHZ. 2021-04-04T00:10:59.45 0.3 undecidable manual P 207 26.4513 108 -0.09 74
IV.VBKN.HHZ. 2021-04-04T00:10:59.02 0.3 undecidable manual P 209 23.8539 110 -0.02 75
IV.CRTO.HHZ. 2021-04-04T00:10:59.23 0.3 undecidable manual P 209 24.9528 109 -0.03 75
IV.VVDG.HHE. 2021-04-04T00:10:58.97 0.1 undecidable manual P 211 23.5542 110 -0.02 100
IV.VITU.HHZ. 2021-04-04T00:10:57.91 0.1 undecidable manual P 16 19.0698 114 -0.24 96
IV.NL9.EHZ. 2021-04-04T00:10:56.38 0.1 undecidable manual P 189 10.9779 128 -0.39 95
IV.PAOL.HNZ. 2021-04-04T00:10:55.49 0.3 undecidable manual S 4 1.3986 171 -1.49 44
IV.PAOL.HNZ. 2021-04-04T00:10:54.94 0.1 negative manual P 4 1.3986 171 -0.77 84
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VITU.HHN. ML:2.9 0.00645 1.56 AML other m 2021-04-04T00:11:03.91
IV.VITU.HNN. ML:2.9 0.006225 1.58 AML other m 2021-04-04T00:11:03.92
IV.VITU.HHE. ML:3.0 0.00848 0.34 AML other m 2021-04-04T00:11:04.47
IV.VITU.HNE. ML:2.2 0.0013199999999999998 0.3 AML other m 2021-04-04T00:11:07.72
IV.VCRE.HHE. ML:2.9 0.0051849999999999995 0.42 AML other m 2021-04-04T00:11:08.26
IV.VTIR.HHE. ML:2.5 0.00173 1.46 AML other m 2021-04-04T00:11:09.80
IV.CRTO.HHN. ML:3.0 0.006645 1.58 AML other m 2021-04-04T00:11:09.87
IV.CRTO.HHE. ML:3.3 0.011699999999999999 1.56 AML other m 2021-04-04T00:11:09.87
IV.VBKN.HHE. ML:3.0 0.0062050000000000004 0.34 AML other m 2021-04-04T00:11:09.24
IV.VTIR.HHN. ML:2.3 0.0010515 0.2 AML other m 2021-04-04T00:11:09.68
IV.PIGN.HHE. ML:2.2 0.0006734999999999999 1.46 AML other m 2021-04-04T00:11:11.89
IV.PIGN.HNE. ML:2.2 0.0006835 0.74 AML other m 2021-04-04T00:11:11.49
IV.PIGN.HHN. ML:2.1 0.0004465 0.32 AML other m 2021-04-04T00:11:12.75
IV.PIGN.HNN. ML:2.1 0.00044599999999999994 0.36 AML other m 2021-04-04T00:11:12.76
IV.VCRE.HHN. ML:2.8 0.003825 0.4 AML other m 2021-04-04T00:11:12.97
IV.VBKN.HHN. ML:2.8 0.004390000000000001 0.36 AML other m 2021-04-04T00:11:12.95
IV.PSB1.HHN. ML:2.1 0.0005945 0.42 AML other m 2021-04-04T00:11:13.64
IV.PSB1.HNE. ML:2.2 0.0007614999999999999 0.56 AML other m 2021-04-04T00:11:13.65
IV.PSB1.HHE. ML:2.2 0.000741 0.56 AML other m 2021-04-04T00:11:13.37
IV.MRB1.HNN. ML:2.5 0.001365 0.7 AML other m 2021-04-04T00:11:17.61
IV.MRB1.HHN. ML:2.6 0.0014849999999999998 0.72 AML other m 2021-04-04T00:11:17.62
IV.PSB1.HNN. ML:2.1 0.0005705 1.14 AML other m 2021-04-04T00:11:17.63
IV.PTRJ.HNE. ML:2.5 0.0012000000000000001 1.4 AML other m 2021-04-04T00:11:19.93
IV.MRB1.HHE. ML:2.5 0.001375 1.1 AML other m 2021-04-04T00:11:20.06
IV.MRB1.HNE. ML:2.5 0.001315 0.82 AML other m 2021-04-04T00:11:20.06
IV.BSSO.HNE. ML:2.1 0.00027949999999999996 0.92 AML other m 2021-04-04T00:11:20.66
IV.BSSO.HHE. ML:2.1 0.00026900000000000003 0.92 AML other m 2021-04-04T00:11:20.20
IV.PTRJ.HNN. ML:2.7 0.0017250000000000002 0.76 AML other m 2021-04-04T00:11:21.29
IV.BSSO.HNN. ML:2.2 0.000373 0.66 AML other m 2021-04-04T00:11:22.55
IV.BSSO.HHN. ML:2.2 0.000376 0.66 AML other m 2021-04-04T00:11:22.55
IV.VAGA.HHE. ML:2.2 0.00035999999999999997 0.62 AML other m 2021-04-04T00:11:25.34
IV.VAGA.HNE. ML:2.2 0.00035350000000000003 0.62 AML other m 2021-04-04T00:11:25.34
IV.VAGA.HHN. ML:2.5 0.000749 0.5 AML other m 2021-04-04T00:11:25.11
IV.VAGA.HNN. ML:2.4 0.0007255 0.5 AML other m 2021-04-04T00:11:25.11
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
Waveforms Seismic signals in miniseed + resp format Download