Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-04-2021 and time 22:05:29 (Italy) in region 5 km W Morcone (BN)

A magnitude ML 1.5 earthquake occured in region: 5 km W Morcone (BN), on

  • 21-04-2021 20:05:29 (UTC)
  • 21-04-2021 22:05:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.3430, 14.6110 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
Morcone BN 5 4932 4932
Pietraroja BN 5 545 5477
Sassinoro BN 6 618 6095
Sepino CB 7 1964 8059
Cerreto Sannita BN 8 3940 11999
Cusano Mutri BN 8 4091 16090
Pontelandolfo BN 9 2167 18257
San Lupo BN 9 801 19058
San Lorenzello BN 9 2227 21285
Guardia Sanframondi BN 10 5078 26363
San Lorenzo Maggiore BN 10 2154 28517
Santa Croce del Sannio BN 11 927 29444
Casalduni BN 12 1378 30822
Campolattaro BN 12 1072 31894
Guardiaregia CB 12 801 32695
Faicchio BN 13 3634 36329
Castelvenere BN 13 2562 38891
San Giuliano del Sannio CB 13 1029 39920
Cercepiccola CB 14 681 40601
Gioia Sannitica CE 15 3638 44239
Campochiaro CB 15 646 44885
Telese Terme BN 15 7486 52371
San Salvatore Telesino BN 15 3999 56370
Ponte BN 16 2580 58950
Cercemaggiore CB 16 3777 62727
San Polo Matese CB 16 470 63197
Circello BN 17 2388 65585
Fragneto Monforte BN 17 1840 67425
Paupisi BN 17 1633 69058
Vinchiaturo CB 17 3324 72382
Solopaca BN 17 3820 76202
Fragneto l'Abate BN 17 1049 77251
Castelpagano BN 18 1483 78734
San Potito Sannitico CE 18 1925 80659
Torrecuso BN 18 3407 84066
Reino BN 19 1210 85276
Colle Sannita BN 19 2431 87707
Puglianello BN 19 1349 89056
Vitulano BN 19 2944 92000
Bojano CB 20 8058 100058
Amorosi BN 20 2797 102855
Castello del Matese CE 20 1494 104349
Piedimonte Matese CE 20 11297 115646
Mirabello Sannitico CB 20 2180 117826

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NW of Benevento (60091 inhabitants)
38 Km NE of Caserta (76326 inhabitants)
48 Km NE of Acerra (59573 inhabitants)
50 Km NW of Avellino (54857 inhabitants)
53 Km NE of Afragola (65057 inhabitants)
53 Km NE of Aversa (53047 inhabitants)
55 Km NE of Casoria (77642 inhabitants)
57 Km NE of Giugliano in Campania (122974 inhabitants)
61 Km NE of Marano di Napoli (59874 inhabitants)
61 Km NE of Portici (55274 inhabitants)
63 Km NE of Ercolano (53709 inhabitants)
63 Km NE of Napoli (974074 inhabitants)
65 Km NE of Torre del Greco (86275 inhabitants)
66 Km N of Scafati (50787 inhabitants)
70 Km NE of Pozzuoli (81661 inhabitants)
72 Km N of Cava de' Tirreni (53659 inhabitants)
73 Km N of Castellammare di Stabia (66466 inhabitants)
75 Km SW of San Severo (53905 inhabitants)
75 Km N of Salerno (135261 inhabitants)
79 Km W of Foggia (151991 inhabitants)
87 Km NW 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 		ML 1.5 2021-04-21
20:05:29		 41.3427 14.6107 9 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90232431
Reviewed
Rev100 		ML 1.5 2021-04-21
20:05:29		 41.3457 14.6067 9 2021-04-21
20:19:26		 Sala Sismica INGV-Roma 89337471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-21 20:05:29 ± 0.09
Latitude 41.3427 ± 0.0063
Longitude 14.6107 ± 0.0084
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 90232431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 741
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 90232431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-28 03:09:08

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 89337471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-21 20:19:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2021-04-21T20:06:05.54 3.0 undecidable manual S -0.47 0
IV.VAGA.HNZ. 2021-04-21T20:05:42.13 0.3 undecidable manual S 285 32.3454 50 0.6 64
IV.RNI2.HHZ. 2021-04-21T20:05:39.79 0.1 undecidable manual P 317 55.2003 50 -0.36 88
IV.BSSO.HHZ. 2021-04-21T20:05:39.03 0.6 undecidable manual S 356 22.5552 111 0.71 42
IV.TST01.HHZ. 2021-04-21T20:05:38.85 0.3 undecidable manual P 338 48.7179 50 -0.3 68
IV.PIGN.HHZ. 2021-04-21T20:05:38.06 0.1 undecidable manual P 246 39.2274 50 0.38 90
IV.TRIV.HHZ. 2021-04-21T20:05:38.75 0.1 positive manual P 354 47.3193 50 -0.18 93
IV.CIGN.HHN. 2021-04-21T20:05:38.23 0.1 negative manual P 35 42.3243 50 0.06 95
IV.VITU.HHZ. 2021-04-21T20:05:37.30 0.3 undecidable manual S 175 17.7711 116 0.52 68
IV.VAGA.HNZ. 2021-04-21T20:05:37.03 0.1 undecidable manual P 285 32.3454 50 0.41 90
IV.MRB1.HHZ. 2021-04-21T20:05:37.60 0.3 undecidable manual P 129 38.5281 50 0.02 73
IV.SGG.HHZ. 2021-04-21T20:05:37.40 0.3 undecidable manual S 284 19.869 114 -0.04 75
IV.MIDA.HHE. 2021-04-21T20:05:37.95 0.3 undecidable manual P 318 44.5221 50 -0.54 64
IV.PSB1.HHZ. 2021-04-21T20:05:37.08 0.3 undecidable manual S 128 21.2676 112 -0.82 59
IV.PAOL.HHZ. 2021-04-21T20:05:36.65 0.1 undecidable manual P 186 34.743 50 -0.34 92
IV.SACR.HHZ. 2021-04-21T20:05:35.10 0.3 undecidable manual S 53 9.9789 131 0.6 67
IV.PSB1.HHZ. 2021-04-21T20:05:35.18 0.1 undecidable manual P 128 21.2676 112 0.66 85
IV.SGG.HHZ. 2021-04-21T20:05:34.16 0.1 undecidable manual P 284 19.869 114 -0.1 99
IV.BSSO.HHZ. 2021-04-21T20:05:34.78 0.1 negative manual P 356 22.5552 111 0.01 100
IV.VITU.HHZ. 2021-04-21T20:05:33.72 0.1 negative manual P 175 17.7711 116 -0.16 98
IV.PTRJ.HHE. 2021-04-21T20:05:33.60 0.1 undecidable manual S 289 7.1928 140 -0.23 98
IV.SACR.HHZ. 2021-04-21T20:05:32.27 0.1 negative manual P 53 9.9789 131 -0.29 96
IV.PTRJ.HHE. 2021-04-21T20:05:32.00 0.1 negative manual P 289 7.1928 140 -0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACR.HHE. ML:2.0 0.0012549999999999998 0.46 AML other m 2021-04-21T20:05:35.30
IV.SACR.HNE. ML:2.0 0.0013399999999999998 0.46 AML other m 2021-04-21T20:05:35.53
IV.SACR.HHN. ML:1.8 0.0008629999999999999 1.22 AML other m 2021-04-21T20:05:35.71
IV.SACR.HNN. ML:1.8 0.0008300000000000001 1.22 AML other m 2021-04-21T20:05:35.11
IV.SGG.HHE. ML:1.5 0.000228 0.62 AML other m 2021-04-21T20:05:40.10
IV.SGG.HNE. ML:1.6 0.000305 0.64 AML other m 2021-04-21T20:05:40.42
IV.BSSO.HNE. ML:1.5 0.000228 0.92 AML other m 2021-04-21T20:05:41.66
IV.VITU.HHN. ML:1.6 0.00035950000000000006 0.8 AML other m 2021-04-21T20:05:41.46
IV.SGG.HNN. ML:1.6 0.0003445 1.66 AML other m 2021-04-21T20:05:41.89
IV.SGG.HHN. ML:1.6 0.000341 0.38 AML other m 2021-04-21T20:05:42.06
IV.BSSO.HHE. ML:1.4 0.000185 1.46 AML other m 2021-04-21T20:05:42.12
IV.BSSO.HNN. ML:1.5 0.0001995 1 AML other m 2021-04-21T20:05:43.31
IV.BSSO.HHN. ML:1.5 0.00020800000000000001 1 AML other m 2021-04-21T20:05:43.81
IV.VITU.HHE. ML:1.6 0.00035549999999999997 0.56 AML other m 2021-04-21T20:05:43.81
IV.PAOL.HHE. ML:1.1 0.00004865 0.56 AML other m 2021-04-21T20:05:45.60
IV.MRB1.HHN. ML:1.4 0.00009279999999999999 0.56 AML other m 2021-04-21T20:05:47.73
IV.PIGN.HHE. ML:1.1 0.00004315 0.34 AML other m 2021-04-21T20:05:48.12
IV.PIGN.HHN. ML:1.0 0.00003345 1.02 AML other m 2021-04-21T20:05:48.33
IV.PAOL.HHN. ML:1.0 0.000046700000000000003 1.48 AML other m 2021-04-21T20:05:48.96
IV.MRB1.HHE. ML:1.4 0.00009445 0.42 AML other m 2021-04-21T20:05:50.67
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