Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 21-12-2021 and time 06:32:34 (Italy) in region 5 km W Gioia Sannitica (CE)

A magnitude ML 1.3 earthquake occured in region: 5 km W Gioia Sannitica (CE), on

  • 21-12-2021 05:32:34 (UTC)
  • 21-12-2021 06:32:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.2840, 14.3930 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Gioia Sannitica CE 5 3638 3638
San Potito Sannitico CE 6 1925 5563
Alvignano CE 6 4824 10387
Alife CE 7 7616 18003
Dragoni CE 7 2108 20111
Faicchio BN 7 3634 23745
Ruviano CE 8 1655 25400
Piedimonte Matese CE 8 11297 36697
Puglianello BN 8 1349 38046
Castello del Matese CE 9 1494 39540
San Salvatore Telesino BN 10 3999 43539
Amorosi BN 10 2797 46336
Liberi CE 11 1153 47489
Cusano Mutri BN 12 4091 51580
San Gregorio Matese CE 12 988 52568
Caiazzo CE 12 5595 58163
Baia e Latina CE 12 2197 60360
Castel Campagnano CE 12 1581 61941
San Lorenzello BN 13 2227 64168
Castel di Sasso CE 13 1171 65339
Telese Terme BN 14 7486 72825
Piana di Monte Verna CE 14 2390 75215
Cerreto Sannita BN 14 3940 79155
Sant'Angelo d'Alife CE 14 2270 81425
Roccaromana CE 14 856 82281
Castelvenere BN 14 2562 84843
Pietraroja BN 15 545 85388
Pontelatone CE 16 1703 87091
Formicola CE 16 1488 88579
Raviscanina CE 16 1319 89898
Limatola BN 16 4073 93971
Melizzano BN 17 1858 95829
Solopaca BN 17 3820 99649
Pietramelara CE 17 4722 104371
Dugenta BN 17 2798 107169
Guardia Sanframondi BN 18 5078 112247
Frasso Telesino BN 18 2318 114565
Castel Morrone CE 18 3858 118423
Giano Vetusto CE 19 647 119070
Camigliano CE 19 1943 121013
Valle Agricola CE 19 890 121903
Bellona CE 19 6053 127956
Pastorano CE 20 3033 130989
Vitulazio CE 20 7420 138409
Pietravairano CE 20 2984 141393
Ailano CE 20 1369 142762
San Lorenzo Maggiore BN 20 2154 144916

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km N of Caserta (76326 inhabitants)
37 Km W of Benevento (60091 inhabitants)
38 Km N of Acerra (59573 inhabitants)
38 Km NE of Aversa (53047 inhabitants)
41 Km N of Afragola (65057 inhabitants)
43 Km NE of Giugliano in Campania (122974 inhabitants)
43 Km N of Casoria (77642 inhabitants)
46 Km NE of Marano di Napoli (59874 inhabitants)
51 Km N of Napoli (974074 inhabitants)
51 Km N of Portici (55274 inhabitants)
53 Km N of Ercolano (53709 inhabitants)
53 Km NW of Avellino (54857 inhabitants)
55 Km NE of Pozzuoli (81661 inhabitants)
55 Km N of Torre del Greco (86275 inhabitants)
61 Km N of Scafati (50787 inhabitants)
66 Km N of Castellammare di Stabia (66466 inhabitants)
70 Km NW of Cava de' Tirreni (53659 inhabitants)
74 Km NW of Salerno (135261 inhabitants)
90 Km NW of Battipaglia (50786 inhabitants)
94 Km W of San Severo (53905 inhabitants)
98 Km W 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
Reviewed
Rev100 		ML 1.3 2021-12-21
05:32:34		 41.2845 14.3928 9 2021-12-21
06:23:14		 Sala Sismica INGV-Roma 98779241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-21 05:32:34 ± 0.13
Latitude 41.2845 ± 0.0081
Longitude 14.3928 ± 0.0084
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98779241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 719
Semi-minor axis of confidence ellipse (meter) 528
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 164
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.42088
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 98779241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-21 06:23:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BSSO.HHZ. 2021-12-21T05:32:46.23 0.6 undecidable manual S 30 33.5442 50 0.03 67
IV.SACR.HNZ. 2021-12-21T05:32:45.52 0.6 undecidable manual S 64 28.9488 107 0.78 54
IV.CERA.HNN. 2021-12-21T05:32:43.52 0.3 undecidable manual P 318 46.7199 50 0.33 92
IV.VITU.HHZ. 2021-12-21T05:32:43.46 0.6 undecidable manual S 119 22.755 111 0.74 56
IV.MIDA.HHE. 2021-12-21T05:32:42.17 0.3 undecidable manual P 344 41.3253 50 -0.19 96
IV.BSSO.HHZ. 2021-12-21T05:32:41.11 0.3 undecidable manual P 30 33.5442 50 -0.05 100
IV.PIGN.HHZ. 2021-12-21T05:32:41.94 0.6 undecidable manual S 242 20.0688 113 0.08 68
IV.SACR.HNZ. 2021-12-21T05:32:40.17 0.3 undecidable manual P 64 28.9488 107 -0.14 99
IV.SGG.HHZ. 2021-12-21T05:32:39.64 0.6 undecidable manual S 354 11.3775 127 0.41 64
IV.PTRJ.HHZ. 2021-12-21T05:32:39.69 0.6 undecidable manual S 52 14.3745 121 -0.4 64
IV.PIGN.HHZ. 2021-12-21T05:32:38.50 0.3 undecidable manual P 242 20.0688 113 -0.15 100
IV.VAGA.HHZ. 2021-12-21T05:32:38.82 0.3 undecidable manual P 318 19.6692 114 0.25 98
IV.VITU.HHZ. 2021-12-21T05:32:38.83 0.3 undecidable manual P 119 22.755 111 -0.31 96
IV.PTRJ.HHZ. 2021-12-21T05:32:37.15 0.3 undecidable manual P 52 14.3745 121 -0.48 94
IV.SGG.HHZ. 2021-12-21T05:32:36.91 0.3 undecidable manual P 354 11.3775 127 -0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SGG.HHN. ML:1.6 0.000512 0.42 AML other m 2021-12-21T05:32:40.07
IV.SGG.HHE. ML:1.4 0.00029888105 0.4192 AML other m 2021-12-21T05:32:41.33
IV.PIGN.HHN. ML:1.0 0.0000732 0.86 AML other m 2021-12-21T05:32:42.99
IV.VITU.HHE. ML:1.4 0.00016949999999999997 1.26 AML other m 2021-12-21T05:32:44.71
IV.PIGN.HHE. ML:1.0 0.00008219999999999999 1.22 AML other m 2021-12-21T05:32:45.00
IV.VITU.HHN. ML:1.4 0.0001855 0.84 AML other m 2021-12-21T05:32:47.53
IV.VAGA.HNN. ML:1.4 0.000176 1.16 AML other m 2021-12-21T05:32:47.17
IV.VAGA.HHN. ML:1.4 0.000179 1.16 AML other m 2021-12-21T05:32:47.75
IV.BSSO.HHE. ML:1.2 0.00006645 0.56 AML other m 2021-12-21T05:32:48.11
IV.VAGA.HNE. ML:1.4 0.000183 0.98 AML other m 2021-12-21T05:32:48.32
IV.VAGA.HHE. ML:1.4 0.000192 0.32 AML other m 2021-12-21T05:32:49.32
IV.BSSO.HHN. ML:1.2 0.00006405 1.58 AML other m 2021-12-21T05:32:50.11
IV.SGG.HNN. ML:1.6 0.00047228755 0.4192 AML other m 2021-12-21T05:32:40.08
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