Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 16-09-2021 and time 23:41:33 (Italy) in region 2 km S Monteroduni (IS)

A magnitude ML 1.8 earthquake occured in region: 2 km S Monteroduni (IS), on

  • 16-09-2021 21:41:33 (UTC)
  • 16-09-2021 23:41:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5030, 14.1830 at 10 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
Fontegreca CE 5 811 4616
Gallo Matese CE 6 579 5195
Sant'Agapito IS 6 1496 6691
Longano IS 6 690 7381
Ciorlano CE 6 426 7807
Macchia d'Isernia IS 7 1035 8842
Letino CE 8 712 9554
Prata Sannita CE 8 1502 11056
Montaquila IS 9 2456 13512
Castelpizzuto IS 10 155 13667
Pozzilli IS 10 2380 16047
Isernia IS 10 21842 37889
Valle Agricola CE 11 890 38779
Pratella CE 11 1565 40344
Pettoranello del Molise IS 11 460 40804
Filignano IS 12 648 41452
Venafro IS 12 11280 52732
Fornelli IS 12 1909 54641
Sesto Campano IS 13 2388 57029
Ailano CE 13 1369 58398
Colli a Volturno IS 13 1349 59747
Roccamandolfi IS 14 938 60685
Conca Casale IS 15 200 60885
Pesche IS 15 1661 62546
Castelpetroso IS 15 1680 64226
Carpinone IS 15 1157 65383
Raviscanina CE 16 1319 66702
Rocchetta a Volturno IS 16 1113 67815
Scapoli IS 16 680 68495
Presenzano CE 16 1766 70261
Santa Maria del Molise IS 17 665 70926
Miranda IS 17 1047 71973
Sant'Angelo d'Alife CE 17 2270 74243
Cantalupo nel Sannio IS 18 739 74982
Viticuso FR 18 353 75335
Cerro al Volturno IS 18 1281 76616
San Massimo CB 19 855 77471
Acquaviva d'Isernia IS 19 425 77896
Vairano Patenora CE 19 6594 84490
Mignano Monte Lungo CE 19 3250 87740
Sessano del Molise IS 20 727 88467
Castel San Vincenzo IS 20 516 88983
Macchiagodena IS 20 1854 90837
Acquafondata FR 20 263 91100
San Pietro Infine CE 20 944 92044
Pietravairano CE 20 2984 95028

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 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)
65 Km N of Afragola (65057 inhabitants)
67 Km N of Casoria (77642 inhabitants)
67 Km N of Marano di Napoli (59874 inhabitants)
73 Km N of Pozzuoli (81661 inhabitants)
74 Km N of Napoli (974074 inhabitants)
77 Km N of Portici (55274 inhabitants)
78 Km N of Ercolano (53709 inhabitants)
81 Km N of Torre del Greco (86275 inhabitants)
83 Km NW of Avellino (54857 inhabitants)
89 Km NW of Scafati (50787 inhabitants)
93 Km N of Castellammare di Stabia (66466 inhabitants)
94 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 1.8 2021-09-16
21:41:33		 41.503 14.183 10 2022-03-30
13:04:41		 Bollettino Sismico Italiano INGV 102007391
Reviewed
Rev100 		ML 1.8 2021-09-16
21:41:33		 41.5018 14.1715 11 2021-09-16
21:51:28		 Sala Sismica INGV-Roma 95523871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-16 21:41:33 ± 0.06
Latitude 41.5030 ± 0.0036
Longitude 14.1830 ± 0.0060
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102007391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 591
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.92630
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 102007391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-15 19:02:56

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 95523871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-16 21:51:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ALJA.HHZ. 2021-09-16T21:43:26.61 3.0 undecidable manual Sg 6.97 0
IV.MTGR.HHZ. 2021-09-16T21:43:24.74 3.0 undecidable manual Sg 4.93 0
SI.MOSI.HHZ. 2021-09-16T21:43:10.03 3.0 negative manual Pg 10.47 0
IV.GRI.EHZ. 2021-09-16T21:43:06.62 3.0 undecidable manual Sg 1.65 0
IV.MBAL.EHZ. 2021-09-16T21:42:54.83 3.0 positive manual Pg 7.67 0
IV.MNTV.EHZ. 2021-09-16T21:42:53.60 3.0 negative manual Pg 12.34 0
IV.MILN.HNZ. 2021-09-16T21:42:53.58 3.0 undecidable manual Pn -0.91 0
IV.PLLN.EHZ. 2021-09-16T21:42:31.10 3.0 positive manual Pn 1.59 0
IV.ZCCA.HHZ. 2021-09-16T21:42:29.37 3.0 negative manual Pn -2.16 0
IV.SELL.HHZ. 2021-09-16T21:42:26.87 3.0 undecidable manual Pg 2.66 0
IV.RIBO.EHZ.01 2021-09-16T21:42:22.51 3.0 positive manual Pg 3.9 0
IV.MC2.EHZ. 2021-09-16T21:42:21.34 3.0 undecidable manual S -3.99 0
IX.SRN3.HHZ.02 2021-09-16T21:42:00.23 3.0 negative manual P -0.11 0
IV.T0110.HHZ. 2021-09-16T21:41:59.98 1.0 undecidable manual S 338 87.3459 50 0.83 17
IV.VVLD.HHZ. 2021-09-16T21:41:52.65 0.3 undecidable manual S 311 61.6938 50 0.34 64
IV.INTR.HHZ. 2021-09-16T21:41:52.24 0.6 undecidable manual S 338 60.8946 50 0.13 45
IV.VCEL.EHZ. 2021-09-16T21:41:50.64 0.6 undecidable manual P 344 102.8193 50 0.08 42
IV.FAGN.HHZ. 2021-09-16T21:41:49.24 1.0 undecidable manual P 330 98.0241 50 -0.57 19
IV.POFI.HNE. 2021-09-16T21:41:48.46 0.6 undecidable manual S 301 45.7209 50 0.41 44
IV.SACR.HNN. 2021-09-16T21:41:48.41 0.6 undecidable manual S 105 45.0216 50 0.55 42
IV.T0110.HHZ. 2021-09-16T21:41:47.92 0.1 undecidable manual P 338 87.3459 50 -0.24 84
IV.PSB1.HHZ. 2021-09-16T21:41:44.23 0.3 undecidable manual P 120 60.7947 50 0.16 67
IV.PIGN.HHZ. 2021-09-16T21:41:44.48 0.6 undecidable manual S 180 33.6441 50 -0.34 45
IV.INTR.HHZ. 2021-09-16T21:41:43.75 0.1 undecidable manual P 338 60.8946 50 -0.35 86
IV.PAOL.HHZ. 2021-09-16T21:41:43.89 0.6 undecidable manual P 148 61.3941 50 -0.27 44
IV.LPEL.HHZ. 2021-09-16T21:41:43.76 0.3 undecidable manual P 0 60.2952 50 -0.24 66
IV.VVLD.HHZ. 2021-09-16T21:41:43.78 0.3 undecidable manual P 311 61.6938 50 -0.43 63
IV.TST02.HHE. 2021-09-16T21:41:42.88 3.0 undecidable manual P 17 54.1014 50 -0.16 68
IV.VITU.HHZ. 2021-09-16T21:41:42.91 0.3 undecidable manual P 133 51.4152 50 0.28 67
IV.SACR.HNN. 2021-09-16T21:41:41.74 0.3 undecidable manual P 105 45.0216 50 0.1 70
IV.POFI.HNE. 2021-09-16T21:41:41.49 0.3 undecidable manual P 301 45.7209 50 -0.26 45
IV.SGG.HHZ. 2021-09-16T21:41:41.58 0.6 undecidable manual S 128 20.7681 116 0.42 45
IV.BSSO.HHZ. 2021-09-16T21:41:40.24 0.1 undecidable manual P 82 34.4433 50 0.23 92
IV.CERA.HHZ. 2021-09-16T21:41:40.74 0.6 undecidable manual S 308 17.2716 120 0.67 42
IV.PIGN.HHZ. 2021-09-16T21:41:39.58 0.1 undecidable manual P 180 33.6441 50 -0.31 91
IV.TST01.HHZ. 2021-09-16T21:41:39.83 3.0 undecidable manual P 32 32.0457 50 0.18 94
IV.MIDA.HHZ. 2021-09-16T21:41:39.59 0.3 undecidable manual S 21 16.4724 121 -0.25 71
IV.MCI.EHE. 2021-09-16T21:41:39.59 0.6 undecidable manual P 268 30.747 50 0.15 47
IV.VAGA.HNZ. 2021-09-16T21:41:38.29 0.3 undecidable manual S 156 10.5783 133 0.08 74
IV.RNI2.HHZ. 2021-09-16T21:41:38.04 0.3 undecidable manual P 353 22.3554 114 -0.02 74
IV.SGG.HHZ. 2021-09-16T21:41:37.61 0.1 undecidable manual P 128 20.7681 116 -0.16 96
IV.CERA.HHZ. 2021-09-16T21:41:37.49 0.3 undecidable manual P 308 17.2716 120 0.35 70
IV.VAGA.HNZ. 2021-09-16T21:41:36.02 0.1 undecidable manual P 156 10.5783 133 -0.05 100
IV.MIDA.HHZ. 2021-09-16T21:41:36.81 0.1 undecidable manual P 21 16.4724 121 -0.2 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VAGA.HNE. ML:2.2 0.002069001 0.256 AML other m 2021-09-16T21:41:38.94
IV.VAGA.HHN. ML:2.6 0.0056500000000000005 0.34 AML other m 2021-09-16T21:41:39.58
IV.VAGA.HNN. ML:2.6 0.005369999999999999 0.32 AML other m 2021-09-16T21:41:39.59
IV.VAGA.HHE. ML:2.1 0.00152 0.22 AML other m 2021-09-16T21:41:40.55
IV.MIDA.HHE. ML:1.8 0.00054194585 0.4352 AML other m 2021-09-16T21:41:44.65
IV.MIDA.HHN. ML:1.9 0.000661 0.2 AML other m 2021-09-16T21:41:43.07
IV.SGG.HHE. ML:2.0 0.00072205275 0.4224 AML other m 2021-09-16T21:41:43.33
IV.RNI2.HHE. ML:1.6 0.00027385805 0.6784 AML other m 2021-09-16T21:41:49.60
IV.SGG.HHN. ML:2.1 0.000903 0.38 AML other m 2021-09-16T21:41:44.49
IV.CERA.HNE. ML:1.8 0.000569 0.42 AML other m 2021-09-16T21:41:44.67
IV.RNI2.HHN. ML:1.6 0.0002872198 0.1792 AML other m 2021-09-16T21:41:45.46
IV.CERA.HNN. ML:1.8 0.0005459029 0.256 AML other m 2021-09-16T21:41:42.75
IV.CERA.HHN. ML:1.8 0.00057851015 0.2432 AML other m 2021-09-16T21:41:42.73
IV.PIGN.HHN. ML:1.5 0.00014338595 0.256 AML other m 2021-09-16T21:41:45.37
IV.CERA.HHE. ML:1.7 0.00043499999999999995 0.5 AML other m 2021-09-16T21:41:45.66
IV.PIGN.HHE. ML:1.8 0.0002695 0.2 AML other m 2021-09-16T21:41:47.69
IV.BSSO.HHN. ML:1.7 0.00019614490000000002 0.5888 AML other m 2021-09-16T21:41:50.89
IV.BSSO.HNN. ML:1.6 0.0001817527 0.3584 AML other m 2021-09-16T21:41:51.93
IV.BSSO.HHE. ML:1.7 0.0002155 0.72 AML other m 2021-09-16T21:41:53.10
IV.BSSO.HNE. ML:1.7 0.0002065 0.7 AML other m 2021-09-16T21:41:53.46
IV.INTR.HHE. ML:1.7 0.00010035 0.42 AML other m 2021-09-16T21:41:56.03
IV.VITU.HHN. ML:2.1 0.00029499999999999996 0.28 AML other m 2021-09-16T21:41:56.32
IV.LPEL.HHN. ML:1.4 0.00005375 0.18 AML other m 2021-09-16T21:41:56.54
IV.PAOL.HHE. ML:1.6 0.000081552875 0.2176 AML other m 2021-09-16T21:41:58.10
IV.VITU.HHE. ML:2.0 0.000246 0.4 AML other m 2021-09-16T21:41:57.16
IV.INTR.HHN. ML:1.7 0.00009995 0.26 AML other m 2021-09-16T21:41:57.47
IV.PAOL.HHN. ML:1.6 0.00008094999999999999 1.72 AML other m 2021-09-16T21:41:57.04
IV.LPEL.HHE. ML:1.4 0.00005715 0.7 AML other m 2021-09-16T21:41:59.11
IV.PSB1.HHN. ML:1.5 0.00006745 0.68 AML other m 2021-09-16T21:42:00.51
IV.PSB1.HHE. ML:1.6 0.0000764 0.44 AML other m 2021-09-16T21:42:00.45
IX.SRN3.HHN.02 ML:2.1 0.00006311945 0.0768 AML other m 2021-09-16T21:42:01.10
IV.T0110.HHE. ML:1.8 0.00007924999999999999 0.56 AML other m 2021-09-16T21:42:04.64
IV.FAGN.HHE. ML:2.0 0.0001135 0.52 AML other m 2021-09-16T21:42:06.01
IV.T0110.HHN. ML:1.7 0.00006653690000000001 0.4224 AML other m 2021-09-16T21:42:04.50
IV.FAGN.HHN. ML:1.8 0.00006721305499999999 0.4224 AML other m 2021-09-16T21:42:16.59
IX.SRN3.HHE.02 ML:2.3 0.000097 0.1 AML other m 2021-09-16T21:42:24.30
IV.MIDA.HNE. ML:1.8 0.0006180006 0.2176 AML other m 2021-09-16T21:41:43.07
IV.MIDA.HNN. ML:1.8 0.00055638685 0.4224 AML other m 2021-09-16T21:41:44.44
IV.SGG.HNN. ML:2.1 0.0008732404 0.384 AML other m 2021-09-16T21:41:44.68
IV.PIGN.HNE. ML:1.7 0.00020965044499999998 0.1664 AML other m 2021-09-16T21:41:47.60
IV.PIGN.HNN. ML:1.5 0.00014380865000000002 0.32 AML other m 2021-09-16T21:41:45.36
IV.VITU.HNN. ML:2.1 0.000343713 0.32 AML other m 2021-09-16T21:41:56.47
IV.PAOL.HNE. ML:1.8 0.00012205898 0.5504 AML other m 2021-09-16T21:41:59.17
IV.PSB1.HNN. ML:1.6 0.00008440858 1.0112 AML other m 2021-09-16T21:42:03.88
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