Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 20-09-2021 and time 07:12:00 (Italy) in region 3 km NE Capriati a Volturno (CE)

A magnitude ML 1.6 earthquake occured in region: 3 km NE Capriati a Volturno (CE), on

  • 20-09-2021 05:12:00 (UTC)
  • 20-09-2021 07:12:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4900, 14.1640 at 11 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Capriati a Volturno CE 3 1541 1541
Monteroduni IS 4 2264 3805
Fontegreca CE 4 811 4616
Ciorlano CE 4 426 5042
Gallo Matese CE 6 579 5621
Prata Sannita CE 7 1502 7123
Sant'Agapito IS 8 1496 8619
Longano IS 8 690 9309
Macchia d'Isernia IS 8 1035 10344
Letino CE 8 712 11056
Pozzilli IS 9 2380 13436
Pratella CE 9 1565 15001
Montaquila IS 9 2456 17457
Venafro IS 10 11280 28737
Sesto Campano IS 10 2388 31125
Valle Agricola CE 11 890 32015
Filignano IS 11 648 32663
Ailano CE 11 1369 34032
Castelpizzuto IS 11 155 34187
Isernia IS 12 21842 56029
Conca Casale IS 13 200 56229
Colli a Volturno IS 13 1349 57578
Fornelli IS 13 1909 59487
Pettoranello del Molise IS 13 460 59947
Presenzano CE 14 1766 61713
Raviscanina CE 15 1319 63032
Roccamandolfi IS 16 938 63970
Sant'Angelo d'Alife CE 16 2270 66240
Rocchetta a Volturno IS 16 1113 67353
Scapoli IS 17 680 68033
Viticuso FR 17 353 68386
Pesche IS 17 1661 70047
Castelpetroso IS 17 1680 71727
Mignano Monte Lungo CE 17 3250 74977
Vairano Patenora CE 18 6594 81571
Carpinone IS 18 1157 82728
San Pietro Infine CE 18 944 83672
Acquafondata FR 19 263 83935
Pietravairano CE 19 2984 86919
Miranda IS 19 1047 87966
Santa Maria del Molise IS 19 665 88631
Cerro al Volturno IS 19 1281 89912
San Vittore del Lazio FR 19 2636 92548
Cantalupo nel Sannio IS 20 739 93287

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km N of Caserta (76326 inhabitants)
58 Km N of Aversa (53047 inhabitants)
62 Km N of Giugliano in Campania (122974 inhabitants)
63 Km N of Acerra (59573 inhabitants)
64 Km N of Afragola (65057 inhabitants)
65 Km NW of Benevento (60091 inhabitants)
66 Km N of Casoria (77642 inhabitants)
66 Km N of Marano di Napoli (59874 inhabitants)
72 Km N of Pozzuoli (81661 inhabitants)
73 Km N of Napoli (974074 inhabitants)
76 Km N of Portici (55274 inhabitants)
77 Km N of Ercolano (53709 inhabitants)
80 Km N of Torre del Greco (86275 inhabitants)
83 Km NW of Avellino (54857 inhabitants)
88 Km NW of Scafati (50787 inhabitants)
92 Km N of Castellammare di Stabia (66466 inhabitants)
96 Km S of Chieti (51815 inhabitants)
99 Km NW of Cava de' Tirreni (53659 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 1.6 2021-09-20
05:12:00		 41.4898 14.1637 11 2022-03-30
13:04:28		 Bollettino Sismico Italiano INGV 99552521
Reviewed
Rev100 		ML 1.8 2021-09-20
05:12:00		 41.4982 14.1427 9 2021-09-20
05:22:53		 Sala Sismica INGV-Roma 95650381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-20 05:12:00 ± 0.1
Latitude 41.4898 ± 0.0063
Longitude 14.1637 ± 0.0084
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99552521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 900
Semi-minor axis of confidence ellipse (meter) 161
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 47
Circular confidence region, given by single value of horizontal uncertainty (meter) 900.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55668
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:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 99552521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-10 18:16:01

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 95650381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-20 05:22:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NAPI.HNZ.01 2021-09-20T05:12:29.06 3.0 undecidable manual P 0
IV.INTR.HHZ. 2021-09-20T05:12:19.96 0.3 undecidable manual S 340 61.6938 50 0.26 67
IV.LPEL.HHZ. 2021-09-20T05:12:19.77 1.0 undecidable manual S 1 61.7937 50 0.04 23
IV.VVLD.HHZ. 2021-09-20T05:12:19.78 0.3 undecidable manual S 313 61.494 50 0.14 68
IV.VITU.HNN. 2021-09-20T05:12:17.19 0.3 undecidable manual S 131 51.6039 50 0.18 69
IV.POFI.HNN. 2021-09-20T05:12:15.98 0.3 undecidable manual S 304 45.2214 50 0.69 60
IT.OPI.HGE. 2021-09-20T05:12:14.35 0.3 undecidable manual S 319 42.1245 50 -0.12 71
IV.TST01.HHE. 2021-09-20T05:12:13.05 0.3 undecidable manual S 33 34.2435 50 0.69 61
IV.INTR.HHZ. 2021-09-20T05:12:11.26 0.1 undecidable manual P 340 61.6938 50 -0.4 86
IV.LPEL.HHZ. 2021-09-20T05:12:11.11 0.3 undecidable manual P 1 61.7937 50 -0.56 62
IV.VVLD.HHZ. 2021-09-20T05:12:11.22 0.1 undecidable manual P 313 61.494 50 -0.4 86
IV.VITU.HNN. 2021-09-20T05:12:10.16 0.1 undecidable manual P 131 51.6039 50 0.05 94
IV.SGG.HHZ. 2021-09-20T05:12:09.40 0.3 undecidable manual S 122 21.2676 50 0.49 68
IV.MIDA.HHZ. 2021-09-20T05:12:08.30 0.3 undecidable manual S 24 18.4704 120 0.24 72
IT.OPI.HGE. 2021-09-20T05:12:08.60 0.6 undecidable manual P 319 42.1245 50 -0.04 48
IV.CERA.HHZ. 2021-09-20T05:12:08.35 0.3 undecidable manual S 315 16.9719 122 0.72 63
IV.POFI.HNN. 2021-09-20T05:12:08.99 0.3 undecidable manual P 304 45.2214 50 -0.12 71
IV.PTRJ.HNE. 2021-09-20T05:12:07.51 0.3 undecidable manual P 115 33.4443 50 0.21 71
IV.TST01.HHE. 2021-09-20T05:12:07.08 0.6 undecidable manual P 33 34.2435 50 -0.34 46
IV.BSSO.HHZ. 2021-09-20T05:12:07.63 0.3 undecidable manual P 80 36.2415 50 -0.11 72
IV.MCI.EHZ. 2021-09-20T05:12:06.28 0.6 undecidable manual P 270 29.1486 50 -0.36 46
IV.VAGA.HHZ. 2021-09-20T05:12:06.12 0.3 undecidable manual S 145 10.0788 136 0.36 71
IV.SGG.HHZ. 2021-09-20T05:12:05.00 0.1 undecidable manual P 122 21.2676 50 -0.43 92
IV.RNI2.HHZ. 2021-09-20T05:12:05.80 0.3 undecidable manual P 358 23.6541 50 0 75
IV.MIDA.HHZ. 2021-09-20T05:12:04.25 0.1 positive manual P 24 18.4704 120 -0.69 84
IV.CERA.HHZ. 2021-09-20T05:12:04.77 0.3 undecidable manual P 315 16.9719 122 0.08 75
IV.VAGA.HHZ. 2021-09-20T05:12:03.49 0.1 positive manual P 145 10.0788 136 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MIDA.HNE. ML:0.0 0.00044332210000000004 0.2176 AML other m 2021-09-20T05:12:08.87
IV.MIDA.HHN. ML:0.0 0.00047748735 0.1984 AML other m 2021-09-20T05:12:08.87
IV.MIDA.HNN. ML:0.0 0.0003490769 0.2208 AML other m 2021-09-20T05:12:08.00
IV.MIDA.HHE. ML:0.0 0.00038593915 0.16 AML other m 2021-09-20T05:12:08.00
IV.SGG.HHE. ML:1.9 0.0006360286 0.3616 AML other m 2021-09-20T05:12:10.78
IV.SGG.HHN. ML:1.8 0.00041189750000000005 0.2976 AML other m 2021-09-20T05:12:10.81
IV.CERA.HNE. ML:1.6 0.0003563539 0.32 AML other m 2021-09-20T05:12:10.11
IV.CERA.HHN. ML:1.6 0.0003641702 0.1792 AML other m 2021-09-20T05:12:09.31
IV.CERA.HNN. ML:1.6 0.000359027 0.3296 AML other m 2021-09-20T05:12:09.32
IV.CERA.HHE. ML:1.3 0.00015558355000000002 0.2016 AML other m 2021-09-20T05:12:10.43
IV.RNI2.HHN. ML:1.5 0.00018343745 0.1216 AML other m 2021-09-20T05:12:10.84
IV.BSSO.HHN. ML:0.0 0.00011053188499999999 0.3392 AML other m 2021-09-20T05:12:16.46
IV.BSSO.HHE. ML:0.0 0.0001371734 0.3392 AML other m 2021-09-20T05:12:16.64
IV.VVLD.HHN. ML:1.4 0.00005646841 0.2816 AML other m 2021-09-20T05:12:20.32
IV.VVLD.HHE. ML:1.4 0.000045410335 0.4224 AML other m 2021-09-20T05:12:21.50
IV.SGG.HNE. ML:1.9 0.00057169085 0.3616 AML other m 2021-09-20T05:12:10.78
IV.SGG.HNN. ML:1.7 0.00035973814999999996 0.208 AML other m 2021-09-20T05:12:10.81
IV.RNI2.HHE. ML:1.1 0.00007270533499999999 0.1408 AML other m 2021-09-20T05:12:10.13
IV.BSSO.HNE. ML:1.6 0.0001516704 0.3392 AML other m 2021-09-20T05:12:16.64
IV.BSSO.HNN. ML:1.7 0.00018271704999999998 0.6592 AML other m 2021-09-20T05:12:18.36
IV.LPEL.HHE. ML:1.4 0.00005119323 0.4416 AML other m 2021-09-20T05:12:26.49
IV.LPEL.HHN. ML:1.4 0.000042825059999999995 0.2016 AML other m 2021-09-20T05:12:23.42
IV.INTR.HHE. ML:1.4 0.000050140935 0.32 AML other m 2021-09-20T05:12:20.59
IV.INTR.HHN. ML:1.5 0.00005816265 0.0416 AML other m 2021-09-20T05:12:20.99
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