Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 19-09-2021 and time 12:06:40 (Italy) in region 2 km S Monteroduni (IS)

A magnitude ML 1.7 earthquake occured in region: 2 km S Monteroduni (IS), on

  • 19-09-2021 10:06:40 (UTC)
  • 19-09-2021 12:06:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5080, 14.1820 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
Monteroduni IS 2 2264 2264
Capriati a Volturno CE 5 1541 3805
Sant'Agapito IS 5 1496 5301
Fontegreca CE 6 811 6112
Longano IS 6 690 6802
Gallo Matese CE 6 579 7381
Macchia d'Isernia IS 6 1035 8416
Ciorlano CE 7 426 8842
Letino CE 8 712 9554
Prata Sannita CE 9 1502 11056
Montaquila IS 9 2456 13512
Castelpizzuto IS 9 155 13667
Isernia IS 10 21842 35509
Pozzilli IS 10 2380 37889
Pettoranello del Molise IS 11 460 38349
Valle Agricola CE 11 890 39239
Filignano IS 11 648 39887
Pratella CE 11 1565 41452
Fornelli IS 12 1909 43361
Venafro IS 12 11280 54641
Colli a Volturno IS 12 1349 55990
Sesto Campano IS 13 2388 58378
Ailano CE 13 1369 59747
Roccamandolfi IS 14 938 60685
Pesche IS 14 1661 62346
Conca Casale IS 15 200 62546
Castelpetroso IS 15 1680 64226
Carpinone IS 15 1157 65383
Rocchetta a Volturno IS 15 1113 66496
Scapoli IS 16 680 67176
Raviscanina CE 16 1319 68495
Miranda IS 16 1047 69542
Santa Maria del Molise IS 17 665 70207
Presenzano CE 17 1766 71973
Sant'Angelo d'Alife CE 17 2270 74243
Cerro al Volturno IS 18 1281 75524
Cantalupo nel Sannio IS 18 739 76263
Viticuso FR 18 353 76616
Acquaviva d'Isernia IS 19 425 77041
San Massimo CB 19 855 77896
Castel San Vincenzo IS 19 516 78412
Sessano del Molise IS 19 727 79139
Acquafondata FR 20 263 79402
Macchiagodena IS 20 1854 81256
Mignano Monte Lungo CE 20 3250 84506
Vairano Patenora CE 20 6594 91100
San Pietro Infine CE 20 944 92044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km N of Caserta (76326 inhabitants)
59 Km N of Aversa (53047 inhabitants)
64 Km N of Giugliano in Campania (122974 inhabitants)
64 Km N of Acerra (59573 inhabitants)
65 Km NW of Benevento (60091 inhabitants)
66 Km N of Afragola (65057 inhabitants)
68 Km N of Casoria (77642 inhabitants)
68 Km N of Marano di Napoli (59874 inhabitants)
74 Km N of Pozzuoli (81661 inhabitants)
74 Km N of Napoli (974074 inhabitants)
77 Km N of Portici (55274 inhabitants)
79 Km N of Ercolano (53709 inhabitants)
82 Km N of Torre del Greco (86275 inhabitants)
84 Km NW of Avellino (54857 inhabitants)
89 Km NW of Scafati (50787 inhabitants)
94 Km N of Castellammare di Stabia (66466 inhabitants)
94 Km S of Chieti (51815 inhabitants)
100 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 1.7 2021-09-19
10:06:40		 41.508 14.1822 9 2022-03-30
13:04:12		 Bollettino Sismico Italiano INGV 96765041
Reviewed
Rev100 		ML 1.7 2021-09-19
10:06:40		 41.5092 14.2008 9 2021-09-19
10:16:43		 Sala Sismica INGV-Roma 95629261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 10:06:40 ± 0.1
Latitude 41.5080 ± 0.0054
Longitude 14.1822 ± 0.0096
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 96765041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 887
Semi-minor axis of confidence ellipse (meter) 50
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 890.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.10072
Epicentral distance of station farthest from the epicenter (degree) 0.55758
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 96765041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-19 14:45:33

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 95629261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 10:16:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2021-09-19T10:06:59.94 0.3 undecidable manual S 338 60.3951 50 0.19 69
IV.LPEL.HHE. 2021-09-19T10:06:58.94 1.0 undecidable manual S 0 59.7957 50 -0.64 20
IV.VITU.HHZ. 2021-09-19T10:06:57.73 0.6 undecidable manual S 134 51.9036 50 0.26 46
IV.SACR.HNN. 2021-09-19T10:06:56.36 0.3 undecidable manual S 106 45.2214 50 0.66 63
IV.POFI.HHZ. 2021-09-19T10:06:56.31 0.3 undecidable manual S 301 45.4212 50 0.56 65
IV.BSSO.HHZ. 2021-09-19T10:06:53.12 1.0 undecidable manual S 83 34.4433 50 0.3 24
IV.PTRJ.HNN. 2021-09-19T10:06:53.41 0.6 undecidable manual S 119 32.9448 50 0.98 37
IV.TST01.HHZ. 2021-09-19T10:06:52.40 1.0 undecidable manual S 32 31.6461 50 0.32 24
IV.PAOL.HHN. 2021-09-19T10:06:51.11 0.1 undecidable manual P 149 61.8936 50 -0.84 75
IV.INTR.HHZ. 2021-09-19T10:06:51.14 0.1 undecidable manual P 338 60.3951 50 -0.57 84
IV.LPEL.HHE. 2021-09-19T10:06:51.20 0.3 undecidable manual P 0 59.7957 50 -0.42 66
IV.VITU.HHZ. 2021-09-19T10:06:50.20 0.6 undecidable manual P 134 51.9036 50 -0.2 47
IV.SGG.HHZ. 2021-09-19T10:06:49.17 0.3 undecidable manual S 129 21.1677 113 0.42 71
IV.SACR.HNN. 2021-09-19T10:06:49.53 0.1 undecidable manual P 106 45.2214 50 0.15 96
IV.RNI2.HHZ. 2021-09-19T10:06:48.98 0.3 undecidable manual S 353 21.7671 113 0.04 76
IV.MCI.EHE. 2021-09-19T10:06:48.08 1.0 undecidable manual P 267 30.747 50 0.94 19
IV.CERA.HHZ. 2021-09-19T10:06:48.24 0.6 undecidable manual S 306 16.872 118 0.85 41
IV.POFI.HHZ. 2021-09-19T10:06:48.95 0.1 undecidable manual P 301 45.4212 50 -0.45 90
IV.TST01.HHZ. 2021-09-19T10:06:47.10 0.1 undecidable manual P 32 31.6461 50 -0.18 97
IV.MIDA.HHZ. 2021-09-19T10:06:47.20 0.3 undecidable manual S 22 15.9729 120 0.07 77
IV.PTRJ.HNN. 2021-09-19T10:06:47.58 0.6 undecidable manual P 119 32.9448 50 0.09 50
IV.BSSO.HHZ. 2021-09-19T10:06:47.57 0.1 undecidable manual P 83 34.4433 50 -0.14 98
IV.VAGA.HHZ. 2021-09-19T10:06:45.77 0.3 undecidable manual S 157 11.1777 129 0.03 78
IV.RNI2.HHZ. 2021-09-19T10:06:45.66 0.1 undecidable manual P 353 21.7671 113 0.19 99
IV.CERA.HHZ. 2021-09-19T10:06:44.90 0.1 undecidable manual P 306 16.872 118 0.32 97
IV.MIDA.HHZ. 2021-09-19T10:06:44.16 0.1 undecidable manual P 22 15.9729 120 -0.27 98
IV.SGG.HHZ. 2021-09-19T10:06:44.99 0.1 undecidable manual P 129 21.1677 113 -0.37 95
IV.VAGA.HHZ. 2021-09-19T10:06:43.40 0.1 undecidable manual P 157 11.1777 129 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VAGA.HNN. ML:2.4 0.002915 0.3 AML other m 2021-09-19T10:06:46.71
IV.VAGA.HHN. ML:2.4 0.003075 0.3 AML other m 2021-09-19T10:06:46.71
IV.VAGA.HNE. ML:1.9 0.001075 0.46 AML other m 2021-09-19T10:06:47.65
IV.VAGA.HHE. ML:1.9 0.0009535 0.18 AML other m 2021-09-19T10:06:47.79
IV.MIDA.HHN. ML:1.7 0.00047099999999999996 0.2 AML other m 2021-09-19T10:06:50.53
IV.SGG.HHE. ML:1.8 0.000544 0.66 AML other m 2021-09-19T10:06:51.20
IV.SGG.HNN. ML:1.9 0.000575 1.64 AML other m 2021-09-19T10:06:51.04
IV.SGG.HHN. ML:1.9 0.000605 1.66 AML other m 2021-09-19T10:06:51.87
IV.MIDA.HHE. ML:1.6 0.00039749999999999996 1.6 AML other m 2021-09-19T10:06:52.81
IV.RNI2.HHN. ML:1.5 0.00023150000000000002 0.88 AML other m 2021-09-19T10:06:52.83
IV.SGG.HNE. ML:1.9 0.0005545 0.76 AML other m 2021-09-19T10:06:53.40
IV.CERA.HHE. ML:1.6 0.000321 0.3 AML other m 2021-09-19T10:06:53.02
IV.CERA.HHN. ML:1.6 0.00036449999999999997 0.38 AML other m 2021-09-19T10:06:53.21
IV.RNI2.HHE. ML:1.4 0.0001815 0.7 AML other m 2021-09-19T10:06:56.61
IV.BSSO.HHN. ML:1.5 0.00012890000000000002 1.22 AML other m 2021-09-19T10:06:59.28
IV.BSSO.HHE. ML:1.6 0.0001545 0.74 AML other m 2021-09-19T10:07:00.83
IV.VITU.HHN. ML:1.9 0.0001905 0.3 AML other m 2021-09-19T10:07:03.67
IV.VITU.HHE. ML:1.7 0.000135 0.36 AML other m 2021-09-19T10:07:04.52
IV.INTR.HHN. ML:1.6 0.00007615 1.26 AML other m 2021-09-19T10:07:06.83
IV.INTR.HHE. ML:1.6 0.00007305 0.64 AML other m 2021-09-19T10:07:09.46
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