Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-09-2021 and time 03:02:23 (Italy) in region 3 km S Monteroduni (IS)

A magnitude ML 1.7 earthquake occured in region: 3 km S Monteroduni (IS), on

  • 17-09-2021 01:02:23 (UTC)
  • 17-09-2021 03:02:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.4980, 14.1740 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 3 2264 2264
Capriati a Volturno CE 4 1541 3805
Fontegreca CE 5 811 4616
Ciorlano CE 5 426 5042
Gallo Matese CE 6 579 5621
Sant'Agapito IS 7 1496 7117
Longano IS 7 690 7807
Macchia d'Isernia IS 7 1035 8842
Prata Sannita CE 8 1502 10344
Letino CE 8 712 11056
Montaquila IS 9 2456 13512
Pozzilli IS 9 2380 15892
Pratella CE 10 1565 17457
Castelpizzuto IS 10 155 17612
Valle Agricola CE 11 890 18502
Venafro IS 11 11280 29782
Isernia IS 11 21842 51624
Filignano IS 11 648 52272
Sesto Campano IS 12 2388 54660
Ailano CE 12 1369 56029
Pettoranello del Molise IS 12 460 56489
Fornelli IS 13 1909 58398
Colli a Volturno IS 13 1349 59747
Conca Casale IS 14 200 59947
Roccamandolfi IS 15 938 60885
Raviscanina CE 15 1319 62204
Presenzano CE 15 1766 63970
Pesche IS 16 1661 65631
Rocchetta a Volturno IS 16 1113 66744
Castelpetroso IS 16 1680 68424
Scapoli IS 16 680 69104
Carpinone IS 16 1157 70261
Sant'Angelo d'Alife CE 17 2270 72531
Viticuso FR 17 353 72884
Miranda IS 18 1047 73931
Santa Maria del Molise IS 18 665 74596
Mignano Monte Lungo CE 18 3250 77846
Cantalupo nel Sannio IS 19 739 78585
Vairano Patenora CE 19 6594 85179
Cerro al Volturno IS 19 1281 86460
San Pietro Infine CE 19 944 87404
Acquafondata FR 19 263 87667
Pietravairano CE 19 2984 90651
Acquaviva d'Isernia IS 20 425 91076
San Massimo CB 20 855 91931
Castel San Vincenzo IS 20 516 92447

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km N of Caserta (76326 inhabitants)
58 Km N of Aversa (53047 inhabitants)
63 Km N of Giugliano in Campania (122974 inhabitants)
63 Km N of Acerra (59573 inhabitants)
65 Km N of Afragola (65057 inhabitants)
65 Km NW of Benevento (60091 inhabitants)
66 Km N of Casoria (77642 inhabitants)
67 Km N of Marano di Napoli (59874 inhabitants)
73 Km N of Pozzuoli (81661 inhabitants)
73 Km N of Napoli (974074 inhabitants)
76 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)
88 Km NW of Scafati (50787 inhabitants)
93 Km N of Castellammare di Stabia (66466 inhabitants)
95 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 1.7 2021-09-17
01:02:23		 41.4975 14.1738 10 2022-03-30
13:04:08		 Bollettino Sismico Italiano INGV 96011571
Reviewed
Rev100 		ML 1.7 2021-09-17
01:02:23		 41.4962 14.1892 11 2021-09-17
01:13:16		 Sala Sismica INGV-Roma 95528201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-17 01:02:23 ± 0.09
Latitude 41.4975 ± 0.0045
Longitude 14.1738 ± 0.0072
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96011571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 716
Semi-minor axis of confidence ellipse (meter) 244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
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) 90
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.55398
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 96011571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-01 17:09:15

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 33
Type of magnitude ML
Reference to an origin 95528201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-17 01:13:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2021-09-17T01:02:59.28 3.0 undecidable manual S -0.16 0
IV.INTR.HHZ. 2021-09-17T01:02:42.46 0.3 undecidable manual S 339 61.1943 50 0.39 65
IV.VITU.HHZ. 2021-09-17T01:02:39.59 0.6 undecidable manual S 132 51.6039 50 0.09 47
IV.POFI.HNE. 2021-09-17T01:02:38.48 0.3 undecidable manual S 303 45.4212 50 0.63 63
IT.OPI.HGE. 2021-09-17T01:02:36.86 0.3 undecidable manual S 317 42.0246 50 -0.09 72
IV.BSSO.HHZ. 2021-09-17T01:02:35.47 0.6 undecidable manual S 81 35.2425 50 0.32 46
IV.TST01.HHZ. 2021-09-17T01:02:34.92 0.6 undecidable manual S 32 33.0447 50 0.38 46
IV.PIGN.HHZ. 2021-09-17T01:02:34.52 0.6 undecidable manual S 179 33.0447 50 -0.02 50
IV.VVLD.HHZ. 2021-09-17T01:02:33.50 0.3 undecidable manual P 312 61.494 50 -0.59 62
IV.INTR.HHZ. 2021-09-17T01:02:33.50 0.3 undecidable manual P 339 61.1943 50 -0.54 63
IV.LPEL.HHE. 2021-09-17T01:02:33.96 0.3 undecidable manual P 1 60.8946 50 -0.04 70
IV.VITU.HHZ. 2021-09-17T01:02:32.73 0.3 undecidable manual P 132 51.6039 50 0.18 70
IV.TST02.HHE. 2021-09-17T01:02:32.65 0.3 undecidable manual P 17 54.9006 50 -0.42 66
IT.OPI.HGE. 2021-09-17T01:02:31.31 0.3 undecidable manual P 317 42.0246 50 0.22 70
IV.POFI.HNE. 2021-09-17T01:02:31.42 0.3 undecidable manual P 303 45.4212 50 -0.19 70
IV.SGG.HHZ. 2021-09-17T01:02:31.94 0.6 undecidable manual S 126 21.0678 116 0.77 41
IV.SACR.HNN. 2021-09-17T01:02:31.74 0.3 undecidable manual P 104 45.621 50 0.11 71
IV.CERA.HHZ. 2021-09-17T01:02:30.54 0.6 undecidable manual S 311 17.0718 121 0.59 45
IV.MIDA.HHZ. 2021-09-17T01:02:30.41 0.3 undecidable manual S 23 17.3715 120 0.37 71
IV.MCI.EHE. 2021-09-17T01:02:30.22 1.0 undecidable manual P 269 29.9478 50 0.99 18
IV.BSSO.HHZ. 2021-09-17T01:02:30.08 0.3 undecidable manual P 81 35.2425 50 0.04 74
IV.PIGN.HHZ. 2021-09-17T01:02:29.34 0.3 undecidable manual P 179 33.0447 50 -0.35 69
IV.TST01.HHZ. 2021-09-17T01:02:29.55 0.3 undecidable manual P 32 33.0447 50 -0.14 73
IV.VAGA.HHZ. 2021-09-17T01:02:28.45 0.3 undecidable manual S 151 10.3785 134 0.34 72
IV.SGG.HHZ. 2021-09-17T01:02:27.38 0.1 undecidable manual P 126 21.0678 116 -0.37 94
IV.CERA.HHZ. 2021-09-17T01:02:27.10 0.3 undecidable manual P 311 17.0718 121 0.06 76
IV.RNI2.HHZ. 2021-09-17T01:02:27.81 0.3 undecidable manual P 356 22.8549 114 -0.28 72
IV.MIDA.HHZ. 2021-09-17T01:02:26.62 0.1 undecidable manual P 23 17.3715 120 -0.47 93
IV.VAGA.HHZ. 2021-09-17T01:02:25.81 0.1 undecidable manual P 151 10.3785 134 -0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIGN.HNN. ML:1.5 0.00015144990000000002 0.7 AML other m 2021-09-17T01:02:29.09
IV.VAGA.HHN. ML:2.5 0.003585 0.4 AML other m 2021-09-17T01:02:29.22
IV.VAGA.HNN. ML:2.4 0.0033924665000000004 0.4 AML other m 2021-09-17T01:02:29.22
IV.VAGA.HHE. ML:1.9 0.00096754125 0.2 AML other m 2021-09-17T01:02:29.58
IV.VAGA.HNE. ML:1.9 0.0010778310000000002 0.1904 AML other m 2021-09-17T01:02:30.35
IV.MIDA.HHE. ML:1.6 0.0003579369 1.7 AML other m 2021-09-17T01:02:31.95
IV.MIDA.HHN. ML:1.6 0.00036052605000000003 0.22 AML other m 2021-09-17T01:02:31.23
IV.MIDA.HNN. ML:1.7 0.0003777546 0.22 AML other m 2021-09-17T01:02:31.48
IV.MIDA.HNE. ML:1.6 0.00035607325 0.36 AML other m 2021-09-17T01:02:32.86
IV.SGG.HHE. ML:1.8 0.00048202790000000003 0.36 AML other m 2021-09-17T01:02:33.14
IV.SGG.HHN. ML:1.8 0.0005415 0.46 AML other m 2021-09-17T01:02:34.29
IV.SGG.HNN. ML:1.8 0.00048836215 0.4496 AML other m 2021-09-17T01:02:34.07
IV.PIGN.HNE. ML:1.5 0.000133869185 0.58 AML other m 2021-09-17T01:02:34.34
IV.CERA.HNE. ML:1.6 0.0003745 0.58 AML other m 2021-09-17T01:02:34.48
IV.CERA.HNN. ML:1.6 0.000343159 0.6896 AML other m 2021-09-17T01:02:34.93
IV.CERA.HHN. ML:1.6 0.00037585084999999997 0.68 AML other m 2021-09-17T01:02:34.93
IV.SGG.HNE. ML:2.1 0.0009419244500000001 0.76 AML other m 2021-09-17T01:02:35.12
IV.CERA.HHE. ML:1.6 0.000316 0.5 AML other m 2021-09-17T01:02:35.72
IV.PIGN.HHE. ML:1.4 0.0001013 0.26 AML other m 2021-09-17T01:02:37.37
IV.RNI2.HHN. ML:1.5 0.00021150000000000002 0.28 AML other m 2021-09-17T01:02:37.90
IV.PIGN.HHN. ML:1.4 0.0001013 0.84 AML other m 2021-09-17T01:02:38.35
IV.RNI2.HHE. ML:1.4 0.00016923125 0.5 AML other m 2021-09-17T01:02:39.43
IV.BSSO.HNN. ML:1.5 0.000129 0.62 AML other m 2021-09-17T01:02:40.72
IV.BSSO.HHN. ML:1.5 0.0001395 0.62 AML other m 2021-09-17T01:02:40.72
IV.TST01.HHN. ML:1.4 0.00010003124999999998 0.44 AML other m 2021-09-17T01:02:41.41
IV.TST01.HHE. ML:1.2 0.00007644071999999999 0.74 AML other m 2021-09-17T01:02:41.85
IV.VVLD.HNE. ML:1.9 0.00014648972 0.78 AML other m 2021-09-17T01:02:42.22
IV.VVLD.HNN. ML:1.8 0.000115851145 0.8104 AML other m 2021-09-17T01:02:42.42
IV.VVLD.HHN. ML:1.2 0.000035049805000000005 0.26 AML other m 2021-09-17T01:02:42.67
IV.BSSO.HNE. ML:1.6 0.000151 1.3 AML other m 2021-09-17T01:02:42.89
IV.BSSO.HHE. ML:1.5 0.0001415 0.46 AML other m 2021-09-17T01:02:43.47
IV.VITU.HNN. ML:2.0 0.0002382141 0.56 AML other m 2021-09-17T01:02:45.11
IV.PTRJ.HHN. ML:2.3 0.0008045 0.1 AML other m 2021-09-17T01:02:45.78
IV.PTRJ.HNN. ML:2.3 0.0009745087 0.0896 AML other m 2021-09-17T01:02:45.78
IV.INTR.HHE. ML:1.5 0.00006345000000000001 1.62 AML other m 2021-09-17T01:02:45.04
IV.VITU.HHN. ML:1.8 0.0001705 0.24 AML other m 2021-09-17T01:02:46.11
IV.PTRJ.HNE. ML:2.2 0.0007353222499999999 0.1096 AML other m 2021-09-17T01:02:46.59
IV.VVLD.HHE. ML:1.3 0.00004245 0.46 AML other m 2021-09-17T01:02:46.63
IV.VITU.HHE. ML:1.9 0.0002055 1.66 AML other m 2021-09-17T01:02:46.97
IV.PTRJ.HHE. ML:1.0 0.0000387 0.56 AML other m 2021-09-17T01:02:47.04
IV.INTR.HHN. ML:1.6 0.00007476079 0.46 AML other m 2021-09-17T01:02:48.26
IV.INTR.HNN. ML:1.6 0.000087127515 0.5208 AML other m 2021-09-17T01:02:48.67
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