Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 04-05-2021 and time 10:39:14 (Italy) in region 3 km NW San Giuliano del Sannio (CB)

A magnitude ML 2.1 earthquake occured in region: 3 km NW San Giuliano del Sannio (CB), on

  • 04-05-2021 08:39:14 (UTC)
  • 04-05-2021 10:39:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4730, 14.6150 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
San Giuliano del Sannio CB 3 1029 1029
Vinchiaturo CB 3 3324 4353
Cercepiccola CB 5 681 5034
Mirabello Sannitico CB 7 2180 7214
Sepino CB 7 1964 9178
Guardiaregia CB 7 801 9979
Baranello CB 8 2673 12652
Ferrazzano CB 8 3344 15996
Colle d'Anchise CB 9 807 16803
Cercemaggiore CB 9 3777 20580
Campochiaro CB 9 646 21226
San Polo Matese CB 10 470 21696
Busso CB 10 1273 22969
Campobasso CB 10 49431 72400
Gildone CB 11 809 73209
Sassinoro BN 12 618 73827
Bojano CB 12 8058 81885
Oratino CB 13 1641 83526
Spinete CB 13 1320 84846
Santa Croce del Sannio BN 14 927 85773
Casalciprano CB 14 564 86337
Campodipietra CB 15 2570 88907
Pietraroja BN 15 545 89452
Morcone BN 15 4932 94384
Jelsi CB 16 1781 96165
Ripalimosani CB 16 3114 99279
Sant'Elena Sannita IS 17 275 99554
Toro CB 17 1391 100945
Castropignano CB 17 947 101892
San Giovanni in Galdo CB 17 580 102472
San Massimo CB 17 855 103327
Cusano Mutri BN 17 4091 107418
Matrice CB 18 1115 108533
Castelpagano BN 18 1483 110016
Riccia CB 19 5262 115278
Cantalupo nel Sannio IS 19 739 116017
Macchiagodena IS 20 1854 117871
Frosolone IS 20 3170 121041
Montagano CB 20 1086 122127

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Benevento (60091 inhabitants)
50 Km NE of Caserta (76326 inhabitants)
62 Km NE of Acerra (59573 inhabitants)
64 Km N of Avellino (54857 inhabitants)
65 Km NE of Aversa (53047 inhabitants)
66 Km NE of Afragola (65057 inhabitants)
68 Km W of San Severo (53905 inhabitants)
69 Km NE of Casoria (77642 inhabitants)
70 Km NE of Giugliano in Campania (122974 inhabitants)
73 Km NE of Marano di Napoli (59874 inhabitants)
75 Km N of Portici (55274 inhabitants)
77 Km NE of Napoli (974074 inhabitants)
77 Km N of Ercolano (53709 inhabitants)
77 Km W of Foggia (151991 inhabitants)
79 Km N of Torre del Greco (86275 inhabitants)
81 Km N of Scafati (50787 inhabitants)
82 Km NE of Pozzuoli (81661 inhabitants)
86 Km N of Cava de' Tirreni (53659 inhabitants)
87 Km N of Castellammare di Stabia (66466 inhabitants)
89 Km N of Salerno (135261 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 2.1 2021-05-04
08:39:14		 41.4727 14.6148 9 2021-12-29
11:11:59		 Bollettino Sismico Italiano INGV 90047721
Reviewed
Rev100 		ML 2.1 2021-05-04
08:39:14		 41.4627 14.5793 10 2021-05-04
08:50:39		 Sala Sismica INGV-Roma 89759781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-04 08:39:14 ± 0.1
Latitude 41.4727 ± 0.0054
Longitude 14.6148 ± 0.0072
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 90047721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 605
Semi-minor axis of confidence ellipse (meter) 500
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 116
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.99645
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 89759781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-04 08:50:39

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 90047721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-02 09:57:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGRT.HHZ. 2021-05-04T08:39:45.01 0.6 undecidable manual S 71 98.7234 50 1.09 30
IV.LPEL.HHZ. 2021-05-04T08:39:36.76 0.6 undecidable manual S 331 73.0713 50 -0.3 42
IV.MSAG.HHZ. 2021-05-04T08:39:33.66 0.3 undecidable manual P 76 110.6004 50 0.27 59
IV.TREM.HHZ. 2021-05-04T08:39:32.64 0.3 undecidable manual P 45 103.4187 50 0.37 59
IV.SGRT.HHZ. 2021-05-04T08:39:31.67 0.3 undecidable manual P 71 98.7234 50 0.12 62
IV.MELA.HHZ. 2021-05-04T08:39:31.06 0.6 undecidable manual S 58 49.7169 50 0.21 45
IV.RNI2.HHZ. 2021-05-04T08:39:30.64 0.6 undecidable manual S 304 46.1205 50 0.76 38
IV.APRC.HHN. 2021-05-04T08:39:29.05 0.3 undecidable manual P 67 83.25 50 -0.11 64
OT.OT05.EHZ. 2021-05-04T08:39:27.67 0.3 undecidable manual P 76 84.5487 50 -1.7 32
IV.VAGA.HHZ. 2021-05-04T08:39:27.10 0.6 undecidable manual S 259 32.2455 50 0.92 37
IV.TRIV.HHZ. 2021-05-04T08:39:27.22 0.6 undecidable manual S 351 33.0447 50 0.83 38
IV.MIDA.HHZ. 2021-05-04T08:39:27.78 0.6 undecidable manual S 302 35.3424 50 0.78 39
IV.VITU.HHZ. 2021-05-04T08:39:26.63 0.6 undecidable manual S 178 32.1456 50 0.49 44
IV.LPEL.HHZ. 2021-05-04T08:39:26.78 0.3 undecidable manual P 331 73.0713 50 -0.81 53
IV.PSB1.HHZ. 2021-05-04T08:39:26.83 0.6 undecidable manual S 149 32.1456 50 0.7 40
IV.CERA.HHE. 2021-05-04T08:39:24.29 0.3 undecidable manual P 286 51.4152 50 0.02 70
IV.PAOL.HHZ. 2021-05-04T08:39:23.42 0.3 undecidable manual P 185 49.1175 50 -0.49 63
IV.MOCO.HNE. 2021-05-04T08:39:23.93 0.6 undecidable manual P 104 46.62 50 0.41 43
IV.MRB1.HHZ. 2021-05-04T08:39:23.83 0.3 undecidable manual P 143 48.7179 50 -0.02 70
IV.MELA.HHZ. 2021-05-04T08:39:23.46 0.1 undecidable manual P 58 49.7169 50 -0.55 83
IV.SGG.HHZ. 2021-05-04T08:39:23.60 0.6 undecidable manual S 244 21.7671 113 0.75 40
IV.RNI2.HHZ. 2021-05-04T08:39:23.07 0.1 undecidable manual P 304 46.1205 50 -0.38 87
IV.PIGN.HHZ. 2021-05-04T08:39:23.58 0.3 undecidable manual P 230 47.2194 50 -0.03 70
IV.TST01.HHZ. 2021-05-04T08:39:22.28 0.6 undecidable manual P 328 36.0417 50 0.39 44
IV.TRIV.HHZ. 2021-05-04T08:39:21.24 0.1 positive manual P 351 33.0447 50 -0.19 93
IV.MIDA.HHZ. 2021-05-04T08:39:21.35 0.3 undecidable manual P 302 35.3424 50 -0.44 66
IV.CIGN.HHZ. 2021-05-04T08:39:21.19 0.3 undecidable manual P 50 31.4463 50 0.01 72
IV.PSB1.HHZ. 2021-05-04T08:39:21.05 0.1 undecidable manual P 149 32.1456 50 -0.23 92
IV.VAGA.HHZ. 2021-05-04T08:39:21.24 0.3 undecidable manual P 259 32.2455 50 -0.07 71
IV.VITU.HHZ. 2021-05-04T08:39:20.85 0.1 undecidable manual P 178 32.1456 50 -0.44 88
IV.PTRJ.HHZ. 2021-05-04T08:39:20.58 0.6 undecidable manual S 211 13.9749 123 0.13 49
IV.SACR.HHZ. 2021-05-04T08:39:20.44 0.6 undecidable manual S 138 11.2776 129 0.76 41
IV.BSSO.HNZ. 2021-05-04T08:39:19.29 0.6 undecidable manual S 348 8.3805 137 0.35 47
IV.SGG.HHZ. 2021-05-04T08:39:18.99 0.1 undecidable manual P 244 21.7671 113 -0.4 90
IV.BSSO.HNZ. 2021-05-04T08:39:17.16 0.1 positive manual P 348 8.3805 137 0.03 100
IV.PTRJ.HHZ. 2021-05-04T08:39:17.78 0.1 undecidable manual P 211 13.9749 123 -0.22 95
IV.SACR.HHZ. 2021-05-04T08:39:17.71 0.1 positive manual P 138 11.2776 129 0.15 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BSSO.HNE. ML:3.0 0.016807665 0.256 AML other m 2021-05-04T08:39:19.48
IV.BSSO.HHE. ML:3.1 0.01769662 0.256 AML other m 2021-05-04T08:39:19.48
IV.BSSO.HHN. ML:2.8 0.009207471 1.7184 AML other m 2021-05-04T08:39:19.06
IV.BSSO.HNN. ML:2.8 0.008965464000000001 1.7184 AML other m 2021-05-04T08:39:19.06
IV.SACR.HHE. ML:2.2 0.00207266 0.2368 AML other m 2021-05-04T08:39:20.93
IV.SACR.HNE. ML:2.2 0.002095 0.26 AML other m 2021-05-04T08:39:20.94
IV.SACR.HNN. ML:2.2 0.0017849914999999998 0.2432 AML other m 2021-05-04T08:39:21.74
IV.SACR.HHN. ML:2.2 0.001895 0.24 AML other m 2021-05-04T08:39:21.74
IV.PTRJ.HHN. ML:2.1 0.0013950701999999998 0.2368 AML other m 2021-05-04T08:39:22.56
IV.PTRJ.HNN. ML:2.2 0.001521479 0.2496 AML other m 2021-05-04T08:39:24.65
IV.VITU.HNE. ML:1.8 0.00028508259999999997 1.7184 AML other m 2021-05-04T08:39:27.03
IV.PSB1.HHE. ML:1.7 0.00023385965 0.2368 AML other m 2021-05-04T08:39:27.56
IV.TRIV.HHN. ML:2.3 0.0009265 0.34 AML other m 2021-05-04T08:39:27.73
IV.TRIV.HNN. ML:2.3 0.0008595 0.34 AML other m 2021-05-04T08:39:27.73
IV.TRIV.HNE. ML:2.6 0.001715 1.64 AML other m 2021-05-04T08:39:27.83
IV.TRIV.HHE. ML:2.6 0.001765 1.64 AML other m 2021-05-04T08:39:27.83
IV.VITU.HHE. ML:2.0 0.0005200399 0.1984 AML other m 2021-05-04T08:39:28.15
IV.PSB1.HHN. ML:1.8 0.00027582845 0.2624 AML other m 2021-05-04T08:39:28.34
IV.PSB1.HNN. ML:1.8 0.00026941685 0.256 AML other m 2021-05-04T08:39:28.34
IV.VITU.HHN. ML:2.2 0.0007553014499999999 0.2176 AML other m 2021-05-04T08:39:28.66
IV.PSB1.HNE. ML:1.7 0.00022835144999999997 0.2624 AML other m 2021-05-04T08:39:29.50
IV.PIGN.HNE. ML:1.7 0.0001326292 0.16 AML other m 2021-05-04T08:39:31.03
IV.PAOL.HHE. ML:1.6 0.0001109728 0.3008 AML other m 2021-05-04T08:39:31.08
IV.VAGA.HHN. ML:2.5 0.0014199999999999998 0.3 AML other m 2021-05-04T08:39:31.11
IV.VAGA.HNN. ML:2.5 0.001364 0.3 AML other m 2021-05-04T08:39:31.11
IV.PIGN.HHE. ML:1.7 0.00014500000000000003 0.64 AML other m 2021-05-04T08:39:31.11
IV.VITU.HNN. ML:2.4 0.00127 0.42 AML other m 2021-05-04T08:39:31.71
IV.PIGN.HNN. ML:1.6 0.000097615065 0.3008 AML other m 2021-05-04T08:39:31.64
IV.MELA.HNE. ML:2.4 0.0006590000000000001 0.44 AML other m 2021-05-04T08:39:31.76
IV.MELA.HHE. ML:2.4 0.000682 0.44 AML other m 2021-05-04T08:39:31.76
IV.MELA.HHN. ML:2.1 0.00030812625000000007 0.2176 AML other m 2021-05-04T08:39:31.72
IV.MELA.HNN. ML:2.1 0.0003059878 0.2304 AML other m 2021-05-04T08:39:31.72
IV.RNI2.HHE. ML:2.1 0.000328 0.32 AML other m 2021-05-04T08:39:32.92
IV.RNI2.HNE. ML:2.0 0.0003145 0.32 AML other m 2021-05-04T08:39:32.93
IV.PIGN.HHN. ML:1.6 0.00010479512 0.2432 AML other m 2021-05-04T08:39:33.27
IV.RNI2.HNN. ML:2.0 0.00027 0.68 AML other m 2021-05-04T08:39:33.58
IV.RNI2.HHN. ML:2.0 0.0002655225 0.32 AML other m 2021-05-04T08:39:33.58
IV.PAOL.HHN. ML:1.8 0.00017698524999999998 1.6992 AML other m 2021-05-04T08:39:35.02
IV.LPEL.HHE. ML:2.2 0.000228 0.18 AML other m 2021-05-04T08:39:39.16
IV.LPEL.HNE. ML:2.2 0.00022884785000000003 0.192 AML other m 2021-05-04T08:39:39.16
IV.LPEL.HHN. ML:2.0 0.0001566979 0.1792 AML other m 2021-05-04T08:39:40.21
IV.LPEL.HNN. ML:2.1 0.0001942297 0.3072 AML other m 2021-05-04T08:39:40.21
IV.SGRT.HHE. ML:2.2 0.00018015455 0.2752 AML other m 2021-05-04T08:39:46.75
IV.SGRT.HHN. ML:2.1 0.000129700075 1.8144 AML other m 2021-05-04T08:39:47.07
IV.MSAG.HHE. ML:1.8 0.0000566 0.52 AML other m 2021-05-04T08:39:50.31
IV.MSAG.HNE. ML:2.2 0.00013355551500000002 0.4416 AML other m 2021-05-04T08:39:50.31
IV.MSAG.HHN. ML:2.1 0.0001012 0.24 AML other m 2021-05-04T08:39:51.45
IV.MSAG.HNN. ML:2.4 0.00024184355 0.2176 AML other m 2021-05-04T08:39:51.45
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