Earthquake with magnitude of ML 1.5 on date 04-04-2021 and time 00:29:33 (UTC) in region 1 km SW Arpaia (BN)

A magnitude ML 1.5 earthquake occured in region: 1 km SW Arpaia (BN), on

  • 04-04-2021 00:29:33 (UTC)
  • 04-04-2021 02:29:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.034, 14.548 at 5 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
Arpaia BN 1 1992 1992
Forchia BN 1 1235 3227
Paolisi BN 3 2072 5299
Airola BN 4 8195 13494
Rotondi AV 4 3591 17085
Arienzo CE 5 5365 22450
Moiano BN 5 4094 26544
Bucciano BN 5 2100 28644
San Felice a Cancello CE 6 17568 46212
Cervinara AV 6 9658 55870
Roccarainola NA 7 7082 62952
Santa Maria a Vico CE 7 14022 76974
Sant'Agata de' Goti BN 7 11216 88190
Bonea BN 8 1448 89638
Cicciano NA 8 12906 102544
Montesarchio BN 9 13500 116044
Camposano NA 9 5333 121377
Tufino NA 9 3776 125153
Comiziano NA 9 1814 126967
Durazzano BN 9 2230 129197
Avella AV 9 7890 137087
San Martino Valle Caudina AV 10 4884 141971
Sperone AV 10 3706 145677
Cervino CE 10 5031 150708
Cimitile NA 11 7280 157988
Baiano AV 11 4718 162706
Casamarciano NA 11 3289 165995
Sirignano AV 12 2933 168928
Nola NA 12 34431 203359
Valle di Maddaloni CE 12 2742 206101
Quadrelle AV 12 1865 207966
Tocco Caudio BN 13 1508 209474
Visciano NA 13 4454 213928
Mugnano del Cardinale AV 13 5373 219301
Pannarano BN 13 2130 221431
San Vitaliano NA 13 6461 227892
San Paolo Bel Sito NA 13 3513 231405
Maddaloni CE 14 39166 270571
Campoli del Monte Taburno BN 14 1546 272117
Dugenta BN 14 2798 274915
Saviano NA 14 15982 290897
Frasso Telesino BN 14 2318 293215
Scisciano NA 14 5994 299209
Marigliano NA 14 30157 329366
Roccabascerana AV 14 2354 331720
Liveri NA 15 1607 333327
Melizzano BN 15 1858 335185
Apollosa BN 15 2658 337843
Cautano BN 15 2044 339887
Mariglianella NA 15 7787 347674
Marzano di Nola AV 15 1727 349401
Pago del Vallo di Lauro AV 16 1830 351231
Pietrastornina AV 16 1553 352784
Brusciano NA 16 16466 369250
Arpaise BN 17 761 370011
San Marco Evangelista CE 17 6532 376543
Foglianise BN 17 3385 379928
Castello di Cisterna NA 17 7869 387797
Domicella AV 17 1862 389659
Sant'Angelo a Scala AV 17 730 390389
Castelpoto BN 18 1254 391643
Limatola BN 18 4073 395716
Acerra NA 18 59573 455289
Carbonara di Nola NA 18 2429 457718
Vitulano BN 18 2944 460662
Solopaca BN 18 3820 464482
Ceppaloni BN 18 3415 467897
San Nicola la Strada CE 18 22448 490345
Taurano AV 18 1546 491891
San Leucio del Sannio BN 18 3106 494997
Castel Campagnano CE 18 1581 496578
Palma Campania NA 19 15978 512556
Caserta CE 19 76326 588882
Castel Morrone CE 19 3858 592740
Lauro AV 19 3509 596249
Pomigliano d'Arco NA 19 39922 636171
San Gennaro Vesuviano NA 19 11966 648137
Summonte AV 19 1583 649720
Altavilla Irpina AV 20 4196 653916
Ospedaletto d'Alpinolo AV 20 2145 656061
Moschiano AV 20 1673 657734

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Acerra (59573 inhabitants)
19 Km E of Caserta (76326 inhabitants)
22 Km W of Benevento (60091 inhabitants)
23 Km NE of Afragola (65057 inhabitants)
25 Km NW of Avellino (54857 inhabitants)
26 Km NE of Casoria (77642 inhabitants)
28 Km NE of Portici (55274 inhabitants)
29 Km E of Aversa (53047 inhabitants)
30 Km NE of Ercolano (53709 inhabitants)
31 Km E of Giugliano in Campania (122974 inhabitants)
31 Km NE of Torre del Greco (86275 inhabitants)
32 Km N of Scafati (50787 inhabitants)
33 Km NE of Napoli (974074 inhabitants)
34 Km E of Marano di Napoli (59874 inhabitants)
38 Km N of Castellammare di Stabia (66466 inhabitants)
39 Km NW of Cava de' Tirreni (53659 inhabitants)
43 Km NW of Salerno (135261 inhabitants)
44 Km E of Pozzuoli (81661 inhabitants)
60 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 1.5 2021-04-04
00:29:33
41.0342 14.548 5 2021-07-12
16:55:13
Bollettino Sismico Italiano INGV 90642171
Reviewed
Rev100
ML 1.6 2021-04-04
00:29:33
41.0278 14.5602 9 2021-04-04
00:39:16
Sala Sismica INGV-Roma 88754131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-04 00:29:33 ± 0.12
Latitude 41.0342 ± 0.0063
Longitude 14.5480 ± 0.0119
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90642171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1070
Semi-minor axis of confidence ellipse (meter) 670
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 291
Circular confidence region, given by single value of horizontal uncertainty (meter) 1070
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.01529
Epicentral distance of station farthest from the epicenter (degree) 0.3984
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 90642171
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-30 23:20:13

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 88754131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-04 00:39:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIGN.HHZ. 2021-04-04T00:29:45.26 0.6 undecidable manual S 301 0.3229 98 -0.71 41
IV.VVDG.HHZ. 2021-04-04T00:29:42.68 0.6 undecidable manual S 205 0.2194 102 0.64 43
IX.MNT3.HHZ.02 2021-04-04T00:29:41.19 0.6 undecidable manual P 119 0.3984 96 -1.14 33
IV.VITU.HHZ. 2021-04-04T00:29:40.53 0.6 undecidable manual S 23 0.161 106 0.67 43
IV.MRB1.HNE. 2021-04-04T00:29:40.82 0.3 undecidable manual P 74 0.3283 98 0.03 73
IV.PIGN.HHZ. 2021-04-04T00:29:40.26 0.3 undecidable manual P 301 0.3229 98 -0.4 68
IV.PSB1.HHE. 2021-04-04T00:29:39.90 0.6 undecidable manual P 46 0.2734 99 0.32 46
IV.VCRE.HHZ. 2021-04-04T00:29:39.14 0.3 undecidable manual P 202 0.232 101 0.46 68
IV.VTIR.HHZ. 2021-04-04T00:29:39.11 0.3 undecidable manual P 202 0.2464 100 0.12 73
IV.VVDG.HHZ. 2021-04-04T00:29:38.67 0.3 undecidable manual P 205 0.2194 102 0.28 71
IV.VBKN.HHZ. 2021-04-04T00:29:38.69 0.6 undecidable manual P 204 0.223 101 0.22 48
IV.CRTO.HHZ. 2021-04-04T00:29:38.96 0.3 undecidable manual P 204 0.2329 101 0.27 71
IV.NL9.EHZ. 2021-04-04T00:29:37.81 0.6 undecidable manual S 181 0.1133 112 -0.31 48
IV.VITU.HHZ. 2021-04-04T00:29:37.58 0.3 undecidable manual P 23 0.161 106 0.44 69
IV.NL9.EHZ. 2021-04-04T00:29:35.75 0.1 undecidable manual P 181 0.1133 112 -0.38 95
IV.PAOL.HHZ. 2021-04-04T00:29:34.26 0.1 undecidable manual P 101 0.0153 162 -0.21 100
IV.PAOL.HHZ. 2021-04-04T00:29:34.60 0.6 undecidable manual S 101 0.0153 162 -0.64 44
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PAOL.HHE. ML:0 0.0057437155 0.34 AML other m 2021-04-04T00:29:34.99
IV.PAOL.HNN. ML:0 0.011668759 1.8 AML other m 2021-04-04T00:29:35.05
IV.PAOL.HHN. ML:0 0.0124162365 1.8 AML other m 2021-04-04T00:29:35.05
IV.PAOL.HNE. ML:0 0.0051557245 1.81 AML other m 2021-04-04T00:29:36.04
IV.VITU.HHE. ML:1.8 0.000658 0.32 AML other m 2021-04-04T00:29:43.53
IV.VITU.HHN. ML:1.7 0.0005465 0.28 AML other m 2021-04-04T00:29:44.19
IV.VITU.HNN. ML:1.8 0.0005652213 0.3 AML other m 2021-04-04T00:29:44.20
IV.VITU.HNE. ML:1.3 0.000202038535 0.34 AML other m 2021-04-04T00:29:44.38
IV.PIGN.HHN. ML:1 4.262747E-5 0.4 AML other m 2021-04-04T00:29:47.31
IV.PIGN.HHE. ML:0.9 3.582557E-5 0.48 AML other m 2021-04-04T00:29:50.49
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