Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.8 on date 01-05-2021 and time 16:49:41 (Italy) in region 2 km E Sepino (CB)

A magnitude ML 1.8 (quarry blast) earthquake occured in region: 2 km E Sepino (CB), on

  • 01-05-2021 14:49:41 (UTC)
  • 01-05-2021 16:49:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4030, 14.6480 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Sepino CB 2 1964 1964
Sassinoro BN 3 618 2582
San Giuliano del Sannio CB 6 1029 3611
Cercepiccola CB 7 681 4292
Morcone BN 7 4932 9224
Santa Croce del Sannio BN 7 927 10151
Cercemaggiore CB 9 3777 13928
Guardiaregia CB 10 801 14729
Pietraroja BN 10 545 15274
Vinchiaturo CB 11 3324 18598
Mirabello Sannitico CB 13 2180 20778
Campochiaro CB 13 646 21424
Pontelandolfo BN 13 2167 23591
Castelpagano BN 13 1483 25074
Cusano Mutri BN 14 4091 29165
Gildone CB 14 809 29974
San Polo Matese CB 14 470 30444
Circello BN 14 2388 32832
Ferrazzano CB 14 3344 36176
Campolattaro BN 15 1072 37248
Cerreto Sannita BN 15 3940 41188
Baranello CB 16 2673 43861
San Lupo BN 16 801 44662
Colle d'Anchise CB 16 807 45469
Colle Sannita BN 16 2431 47900
Casalduni BN 16 1378 49278
San Lorenzello BN 17 2227 51505
Guardia Sanframondi BN 17 5078 56583
San Lorenzo Maggiore BN 17 2154 58737
Bojano CB 17 8058 66795
Campobasso CB 17 49431 116226
Jelsi CB 18 1781 118007
Riccia CB 18 5262 123269
Busso CB 18 1273 124542
Reino BN 19 1210 125752
Campodipietra CB 19 2570 128322
Faicchio BN 20 3634 131956
Fragneto l'Abate BN 20 1049 133005
Fragneto Monforte BN 20 1840 134845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Benevento (60091 inhabitants)
45 Km NE of Caserta (76326 inhabitants)
56 Km N of Avellino (54857 inhabitants)
56 Km NE of Acerra (59573 inhabitants)
60 Km NE of Aversa (53047 inhabitants)
60 Km NE of Afragola (65057 inhabitants)
63 Km NE of Casoria (77642 inhabitants)
65 Km NE of Giugliano in Campania (122974 inhabitants)
68 Km NE of Marano di Napoli (59874 inhabitants)
69 Km W of San Severo (53905 inhabitants)
69 Km NE of Portici (55274 inhabitants)
71 Km NE of Ercolano (53709 inhabitants)
71 Km NE of Napoli (974074 inhabitants)
72 Km NE of Torre del Greco (86275 inhabitants)
73 Km N of Scafati (50787 inhabitants)
75 Km W of Foggia (151991 inhabitants)
77 Km NE of Pozzuoli (81661 inhabitants)
78 Km N of Cava de' Tirreni (53659 inhabitants)
80 Km N of Castellammare di Stabia (66466 inhabitants)
81 Km N of Salerno (135261 inhabitants)
93 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 1.8 2021-05-01
14:49:41		 41.4032 14.6477 1 2021-12-29
11:12:28		 Bollettino Sismico Italiano INGV 95208841
Reviewed
Rev100 		ML 1.8 2021-05-01
14:49:41		 41.4133 14.6992 8 2021-05-01
15:00:56		 Sala Sismica INGV-Roma 89667981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-01 14:49:41 ± 0.16
Latitude 41.4032 ± 0.0099
Longitude 14.6477 ± 0.0132
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 95208841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1180
Semi-minor axis of confidence ellipse (meter) 1060
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 229
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 15
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.58006
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 95208841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-07 15:17:10

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 89667981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-01 15:00:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.CLTB.HHZ. 2021-05-01T14:51:30.83 3.0 undecidable manual Sn 0.65 0
IV.SEI.HHZ. 2021-05-01T14:51:24.25 3.0 undecidable manual Sn 3.57 0
IV.IMOL.HNZ. 2021-05-01T14:51:21.55 3.0 undecidable manual Sn -0.38 0
IV.BRIS.HHZ. 2021-05-01T14:51:19.54 3.0 undecidable manual Sn 0.46 0
IV.PE3.EHZ. 2021-05-01T14:51:05.10 3.0 undecidable manual Sg 4.11 0
IV.NDIM.HNZ. 2021-05-01T14:50:51.93 3.0 negative manual Pn 3.12 0
IV.BDI.HHZ. 2021-05-01T14:50:47.50 3.0 negative manual Pn 4.6 0
IV.VENL.HNZ. 2021-05-01T14:50:46.60 3.0 undecidable manual Pn -0.81 0
IV.CRAC.EHZ. 2021-05-01T14:50:32.03 3.0 undecidable manual Sn -1.55 0
IV.VIVA.HHZ. 2021-05-01T14:50:31.45 3.0 undecidable manual S 2.73 0
IV.AMUR.HHZ. 2021-05-01T14:50:29.20 3.0 undecidable manual S -0.86 0
IV.BARO.EHZ. 2021-05-01T14:50:23.39 3.0 undecidable manual Pg 6.21 0
IV.GAVE.EHZ. 2021-05-01T14:50:14.82 3.0 undecidable manual Pn 1.62 0
OT.OT12.EHZ. 2021-05-01T14:49:59.97 3.0 negative manual P -0.32 0
IV.CAFE.HHN. 2021-05-01T14:49:52.88 0.6 undecidable manual P 130 64.3911 50 -1.54 26
IV.RNI2.HNE. 2021-05-01T14:49:51.11 0.6 undecidable manual P 309 52.9026 91 -1.22 32
IV.PIGN.HHZ. 2021-05-01T14:49:50.32 0.3 undecidable manual P 240 45.0216 91 -0.43 68
IV.PAOL.HHZ. 2021-05-01T14:49:49.55 0.6 undecidable manual P 189 41.8248 91 -0.55 44
IV.MRB1.HHZ. 2021-05-01T14:49:49.52 0.3 undecidable manual P 139 41.0256 91 -0.42 68
IV.TRIV.HHZ. 2021-05-01T14:49:49.62 0.1 undecidable manual P 349 41.1255 91 -0.35 93
IV.MIDA.HNZ. 2021-05-01T14:49:49.61 0.6 undecidable manual P 309 42.1245 91 -0.55 44
IV.CIGN.HHZ. 2021-05-01T14:49:48.73 0.1 undecidable manual P 37 35.1426 91 -0.03 100
IV.VAGA.HHZ. 2021-05-01T14:49:48.52 0.3 undecidable manual P 272 34.4433 91 -0.11 74
IV.PSB1.HHZ. 2021-05-01T14:49:46.77 0.3 undecidable manual P 146 24.1536 91 0.21 74
IV.SGG.HHZ. 2021-05-01T14:49:46.84 0.1 undecidable manual P 265 22.4553 91 0.62 88
IV.VITU.HHZ. 2021-05-01T14:49:46.79 0.3 undecidable manual P 183 24.4533 91 0.17 74
IV.BSSO.HHZ. 2021-05-01T14:49:45.57 0.1 positive manual P 344 16.4724 92 0.54 92
IV.PTRJ.HHZ. 2021-05-01T14:49:44.56 0.3 undecidable manual P 246 10.7781 93 0.67 66
IV.SACR.HHZ. 2021-05-01T14:49:43.28 0.1 positive manual P 97 4.8951 96 0.57 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BSSO.HNE. ML:2.0 0.0012349999999999998 0.26 AML other m 2021-05-01T14:49:49.42
IV.BSSO.HHE. ML:2.1 0.001265 0.82 AML other m 2021-05-01T14:49:49.42
IV.BSSO.HNN. ML:1.8 0.0007650000000000001 0.2 AML other m 2021-05-01T14:49:49.62
IV.BSSO.HHN. ML:1.8 0.0007695 0.2 AML other m 2021-05-01T14:49:49.62
IV.VITU.HHN. ML:2.0 0.0006775 0.48 AML other m 2021-05-01T14:49:52.07
IV.SGG.HHE. ML:1.9 0.0005600000000000001 1.52 AML other m 2021-05-01T14:49:55.97
IV.SGG.HHN. ML:1.9 0.0006365 0.56 AML other m 2021-05-01T14:49:55.07
IV.VITU.HHE. ML:2.0 0.0006005 0.22 AML other m 2021-05-01T14:49:55.46
IV.VAGA.HHN. ML:2.0 0.000386 0.6 AML other m 2021-05-01T14:49:56.48
IV.VAGA.HNN. ML:1.9 0.000378 0.44 AML other m 2021-05-01T14:49:56.49
IV.PAOL.HHE. ML:1.6 0.000133 0.3 AML other m 2021-05-01T14:49:56.51
IV.TRIV.HHE. ML:1.9 0.0002735 0.5 AML other m 2021-05-01T14:49:57.50
IV.TRIV.HNE. ML:1.9 0.00026649999999999997 0.5 AML other m 2021-05-01T14:49:57.50
IV.TRIV.HHN. ML:1.8 0.00023899999999999998 0.44 AML other m 2021-05-01T14:49:57.65
IV.TRIV.HNN. ML:1.8 0.0002205 0.44 AML other m 2021-05-01T14:49:57.65
IV.PSB1.HHE. ML:1.8 0.0004345 0.54 AML other m 2021-05-01T14:49:58.41
IV.PSB1.HNE. ML:1.8 0.00042200000000000007 0.54 AML other m 2021-05-01T14:49:58.68
IV.VAGA.HHE. ML:1.9 0.000322 0.36 AML other m 2021-05-01T14:50:00.22
IV.VAGA.HNE. ML:1.8 0.0003085 0.36 AML other m 2021-05-01T14:50:00.22
IV.PAOL.HHN. ML:1.4 0.00008599999999999999 1.18 AML other m 2021-05-01T14:50:00.12
IV.CIGN.HHN. ML:1.5 0.0001305 0.54 AML other m 2021-05-01T14:50:00.04
IV.PSB1.HHN. ML:1.6 0.0002465 0.46 AML other m 2021-05-01T14:50:00.47
IV.PSB1.HNN. ML:1.6 0.000258 0.54 AML other m 2021-05-01T14:50:00.48
IV.CIGN.HHE. ML:1.4 0.00010255 1.32 AML other m 2021-05-01T14:50:02.14
IV.PIGN.HHE. ML:1.5 0.00010405000000000001 0.62 AML other m 2021-05-01T14:50:03.11
IV.MRB1.HNN. ML:2.0 0.0003145 0.78 AML other m 2021-05-01T14:50:03.25
IV.MRB1.HHN. ML:1.8 0.00022500000000000002 1.5 AML other m 2021-05-01T14:50:06.76
IV.MRB1.HNE. ML:1.9 0.00026949999999999994 1.44 AML other m 2021-05-01T14:50:06.99
IV.MRB1.HHE. ML:1.8 0.00022549999999999998 0.98 AML other m 2021-05-01T14:50:07.87
IV.PIGN.HHN. ML:1.3 0.0000591 0.88 AML other m 2021-05-01T14:50:08.74
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