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

A magnitude ML 1.7 earthquake occured in region: 3 km SE 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) 41.496, 14.189 at 11 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.

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
Fontegreca CE 4 811 3075
Capriati a Volturno CE 5 1541 4616
Gallo Matese CE 5 579 5195
Longano IS 6 690 5885
Ciorlano CE 6 426 6311
Sant'Agapito IS 6 1496 7807
Letino CE 7 712 8519
Prata Sannita CE 7 1502 10021
Macchia d'Isernia IS 8 1035 11056
Castelpizzuto IS 9 155 11211
Valle Agricola CE 10 890 12101
Montaquila IS 10 2456 14557
Pratella CE 10 1565 16122
Pozzilli IS 11 2380 18502
Isernia IS 11 21842 40344
Pettoranello del Molise IS 11 460 40804
Ailano CE 12 1369 42173
Venafro IS 12 11280 53453
Filignano IS 12 648 54101
Sesto Campano IS 12 2388 56489
Fornelli IS 13 1909 58398
Roccamandolfi IS 13 938 59336
Colli a Volturno IS 14 1349 60685
Raviscanina CE 15 1319 62004
Castelpetroso IS 15 1680 63684
Pesche IS 15 1661 65345
Conca Casale IS 15 200 65545
Carpinone IS 16 1157 66702
Sant'Angelo d'Alife CE 16 2270 68972
Presenzano CE 16 1766 70738
Santa Maria del Molise IS 17 665 71403
Rocchetta a Volturno IS 17 1113 72516
Scapoli IS 17 680 73196
Miranda IS 17 1047 74243
Cantalupo nel Sannio IS 17 739 74982
San Massimo CB 18 855 75837
Vairano Patenora CE 19 6594 82431
Viticuso FR 19 353 82784
Cerro al Volturno IS 19 1281 84065
Pietravairano CE 19 2984 87049
Mignano Monte Lungo CE 19 3250 90299
Macchiagodena IS 20 1854 92153
San Gregorio Matese CE 20 988 93141
Acquaviva d'Isernia IS 20 425 93566
Sessano del Molise IS 20 727 94293

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 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)
64 Km NW of Benevento (60091 inhabitants)
65 Km N of Afragola (65057 inhabitants)
66 Km N of Casoria (77642 inhabitants)
66 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)
77 Km N of Ercolano (53709 inhabitants)
80 Km N of Torre del Greco (86275 inhabitants)
82 Km NW of Avellino (54857 inhabitants)
88 Km NW of Scafati (50787 inhabitants)
92 Km N of Castellammare di Stabia (66466 inhabitants)
95 Km S of Chieti (51815 inhabitants)
98 Km NW of Cava de' Tirreni (53659 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
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 ± 0.14
Latitude 41.4962 ± 0.0072
Longitude 14.1892 ± 0.0132
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95528201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1144
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 1140
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.45506
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 9
Magnitude information

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 Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2021-09-17T01:02:59.28 3.0 undecidable manual S -0.16 0
IV.PTRJ.HHZ. 2021-09-17T01:02:35.33 3.0 undecidable manual S 0.58 0
IV.TST01.HHZ. 2021-09-17T01:02:34.92 0.6 undecidable manual S 30 0.2923 50 0.57 45
IV.BSSO.HHZ. 2021-09-17T01:02:34.08 0.6 undecidable manual S 81 0.3067 50 -0.69 41
IV.PIGN.HHZ. 2021-09-17T01:02:34.52 0.6 undecidable manual S 181 0.2959 50 0.07 50
IV.INTR.HHZ. 2021-09-17T01:02:33.67 3.0 negative manual P -0.48 0
IV.VVLD.HHZ. 2021-09-17T01:02:33.64 3.0 negative manual P -0.49 0
IV.VITU.HHZ. 2021-09-17T01:02:32.73 0.3 undecidable manual P 133 0.4551 50 0.3 69
IV.SGG.HHZ. 2021-09-17T01:02:31.94 0.6 undecidable manual S 127 0.1799 50 0.94 39
IV.CERA.HHZ. 2021-09-17T01:02:30.83 0.6 undecidable manual S 309 0.1637 50 0.31 48
IV.MIDA.HHZ. 2021-09-17T01:02:30.77 0.6 undecidable manual S 18 0.1538 50 0.54 44
IV.BSSO.HHZ. 2021-09-17T01:02:30.08 0.3 undecidable manual P 81 0.3067 50 0.19 73
IV.PIGN.HHZ. 2021-09-17T01:02:29.41 0.6 positive manual P 181 0.2959 50 -0.29 47
IV.TST01.HHZ. 2021-09-17T01:02:29.61 0.6 positive manual P 30 0.2923 50 -0.03 50
IV.VAGA.HHZ. 2021-09-17T01:02:28.87 0.6 undecidable manual S 157 0.0872 139 0.56 44
IV.RNI2.HHZ. 2021-09-17T01:02:28.36 0.3 undecidable manual P 352 0.2086 50 0.15 75
IV.SGG.HHZ. 2021-09-17T01:02:27.44 0.1 positive manual P 127 0.1799 50 -0.27 97
IV.CERA.HHZ. 2021-09-17T01:02:27.46 0.3 positive manual P 309 0.1637 50 0.03 77
IV.MIDA.HHZ. 2021-09-17T01:02:26.61 0.1 positive manual P 18 0.1538 50 -0.65 90
IV.VAGA.HHZ. 2021-09-17T01:02:25.86 0.1 positive manual P 157 0.0872 139 -0.3 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
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 0.003395 0.4 AML other m 2021-09-17T01:02:29.22
IV.VAGA.HHE. ML:1.9 0.0010565 1 AML other m 2021-09-17T01:02:29.58
IV.VAGA.HNE. ML:2.1 0.00148 1.64 AML other m 2021-09-17T01:02:29.15
IV.MIDA.HHN. ML:1.6 0.000365 1.2 AML other m 2021-09-17T01:02:30.23
IV.MIDA.HHE. ML:1.6 0.0003579369 0.3 AML other m 2021-09-17T01:02:30.95
IV.SGG.HHE. ML:1.8 0.0005205 0.54 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.CERA.HNE. ML:1.7 0.0003745 0.58 AML other m 2021-09-17T01:02:34.48
IV.CERA.HHN. ML:1.7 0.0004225 0.88 AML other m 2021-09-17T01:02:34.93
IV.CERA.HNN. ML:1.7 0.0004165 0.88 AML other m 2021-09-17T01:02:34.93
IV.CERA.HHE. ML:1.6 0.000316 0.5 AML other m 2021-09-17T01:02:35.72
IV.TST01.HHN. ML:1.4 0.00010325 1.06 AML other m 2021-09-17T01:02:36.39
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 0.0002115 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.TST01.HHE. ML:1.3 7.765E-5 0.62 AML other m 2021-09-17T01:02:38.50
IV.RNI2.HHE. ML:1.4 0.0001745 0.66 AML other m 2021-09-17T01:02:39.43
IV.BSSO.HHN. ML:1.5 0.0001395 0.62 AML other m 2021-09-17T01:02:40.72
IV.BSSO.HNN. ML:1.5 0.000129 0.62 AML other m 2021-09-17T01:02:40.72
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.VVLD.HHN. ML:1.3 4.07E-5 0.64 AML other m 2021-09-17T01:02:45.26
IV.PTRJ.HNE. ML:2.3 0.0008505 0.76 AML other m 2021-09-17T01:02:45.52
IV.PTRJ.HHN. ML:2.2 0.0008045 0.1 AML other m 2021-09-17T01:02:45.78
IV.INTR.HHE. ML:1.5 6.345E-5 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.HNN. ML:2.4 0.00102920345 0.98 AML other m 2021-09-17T01:02:45.78
IV.VVLD.HHE. ML:1.3 4.245E-5 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 3.87E-5 0.56 AML other m 2021-09-17T01:02:47.04
IV.INTR.HHN. ML:1.6 7.77E-5 0.76 AML other m 2021-09-17T01:02:47.22
IV.MIDA.HNE. ML:1.6 0.00036068345 3.6 AML other m 2021-09-17T01:02:31.24
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