Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 07-10-2021 and time 03:37:46 (Italy) in region 1 km NE Sant'Elia Fiumerapido (FR)

A magnitude ML 1.9 earthquake occured in region: 1 km NE Sant'Elia Fiumerapido (FR), on

  • 07-10-2021 01:37:46 (UTC)
  • 07-10-2021 03:37:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.5470, 13.8760 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
Sant'Elia Fiumerapido FR 1 6166 6166
Vallerotonda FR 3 1581 7747
Belmonte Castello FR 6 739 8486
Acquafondata FR 7 263 8749
Cassino FR 7 36142 44891
Cervaro FR 8 8109 53000
Terelle FR 8 422 53422
Villa Latina FR 8 1241 54663
Viticuso FR 8 353 55016
San Biagio Saracinisco FR 9 349 55365
Villa Santa Lucia FR 10 2632 57997
Atina FR 10 4316 62313
San Vittore del Lazio FR 10 2636 64949
Picinisco FR 11 1218 66167
Piedimonte San Germano FR 12 6535 72702
Conca Casale IS 12 200 72902
San Pietro Infine CE 13 944 73846
Pignataro Interamna FR 14 2595 76441
Settefrati FR 14 728 77169
Gallinaro FR 14 1269 78438
Castrocielo FR 15 3965 82403
Colle San Magno FR 15 699 83102
Casalattico FR 15 574 83676
Filignano IS 15 648 84324
Aquino FR 15 5370 89694
Venafro IS 16 11280 100974
Pozzilli IS 16 2380 103354
Sant'Apollinare FR 16 1919 105273
Casalvieri FR 17 2698 107971
Rocca d'Evandro CE 17 3283 111254
Scapoli IS 17 680 111934
Roccasecca FR 17 7365 119299
Sant'Ambrogio sul Garigliano FR 17 966 120265
San Giorgio a Liri FR 18 3164 123429
Mignano Monte Lungo CE 18 3250 126679
San Donato Val di Comino FR 19 2107 128786
Pizzone IS 19 329 129115
Alvito FR 19 2713 131828
Rocchetta a Volturno IS 20 1113 132941
Castel San Vincenzo IS 20 516 133457

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km NW of Caserta (76326 inhabitants)
70 Km NW of Aversa (53047 inhabitants)
74 Km NW of Giugliano in Campania (122974 inhabitants)
77 Km NW of Marano di Napoli (59874 inhabitants)
78 Km NW of Afragola (65057 inhabitants)
79 Km NW of Acerra (59573 inhabitants)
79 Km NW of Casoria (77642 inhabitants)
80 Km N of Pozzuoli (81661 inhabitants)
81 Km E of Latina (125985 inhabitants)
85 Km NW of Napoli (974074 inhabitants)
89 Km NW of Benevento (60091 inhabitants)
90 Km NW of Portici (55274 inhabitants)
91 Km NW of Ercolano (53709 inhabitants)
93 Km E of Velletri (53303 inhabitants)
93 Km S of Chieti (51815 inhabitants)
94 Km NW of Torre del Greco (86275 inhabitants)
98 Km SE of L'Aquila (69753 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 1.9 2021-10-07
01:37:46		 41.5468 13.8755 10 2022-03-30
13:04:10		 Bollettino Sismico Italiano INGV 96426321
Reviewed
Rev100 		ML 2.0 2021-10-07
01:37:46		 41.5207 13.8605 14 2021-10-07
01:47:03		 Sala Sismica INGV-Roma 96307361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-07 01:37:46 ± 0.13
Latitude 41.5468 ± 0.0090
Longitude 13.8755 ± 0.0096
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 96426321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 974
Semi-minor axis of confidence ellipse (meter) 696
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.68618
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 96426321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-11 09:02:04

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 96307361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-07 01:47:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2021-10-07T01:38:03.92 0.3 undecidable manual S 3 51.6039 50 0.99 53
IV.VVLD.HHZ. 2021-10-07T01:38:00.47 0.3 undecidable manual S 330 41.4252 50 0.25 70
IV.MELA.HHZ. 2021-10-07T01:38:00.61 3.0 undecidable manual P -0.05 0
IV.T0110.HHZ. 2021-10-07T01:37:59.40 0.3 undecidable manual P 354 76.1682 50 -0.36 64
IV.MIDA.HHZ. 2021-10-07T01:37:58.06 0.3 undecidable manual S 71 33.1446 50 0.06 74
IV.LRP.EHZ. 2021-10-07T01:37:56.47 0.3 undecidable manual S 295 26.4513 50 0.26 72
IV.PIGN.HNE. 2021-10-07T01:37:56.54 0.3 undecidable manual P 147 46.1205 50 1.41 43
IV.INTR.HHZ. 2021-10-07T01:37:55.85 0.1 undecidable manual P 3 51.6039 50 -0.12 95
IV.POFI.HHZ. 2021-10-07T01:37:55.61 0.3 undecidable manual S 324 23.2545 113 0.34 71
IV.SGG.HHZ. 2021-10-07T01:37:55.20 0.1 undecidable manual P 113 45.5211 50 0.17 95
IV.VVLD.HHZ. 2021-10-07T01:37:54.01 0.1 undecidable manual P 330 41.4252 50 -0.4 91
IV.CERA.HHZ. 2021-10-07T01:37:52.62 0.3 undecidable manual S 64 13.0758 128 0.4 72
IV.VAGA.HHZ. 2021-10-07T01:37:52.96 0.1 undecidable manual P 116 33.1446 50 -0.18 97
IV.MIDA.HHZ. 2021-10-07T01:37:52.76 0.1 undecidable manual P 71 33.1446 50 -0.37 93
IV.RNI2.HHZ. 2021-10-07T01:37:52.37 0.3 undecidable manual P 53 28.749 50 -0.09 74
IV.MCI.EHZ. 2021-10-07T01:37:51.42 0.3 undecidable manual S 220 8.0808 141 0.46 71
IT.OPI.HGE. 2021-10-07T01:37:51.64 0.3 undecidable manual P 352 25.752 50 -0.35 71
IV.POFI.HHZ. 2021-10-07T01:37:51.46 0.1 undecidable manual P 324 23.2545 113 -0.1 100
IV.LRP.EHZ. 2021-10-07T01:37:51.84 0.1 undecidable manual P 295 26.4513 50 -0.26 96
IV.CERA.HHZ. 2021-10-07T01:37:49.52 0.1 positive manual P 64 13.0758 128 -0.27 98
IV.MCI.EHZ. 2021-10-07T01:37:48.63 0.1 positive manual P 220 8.0808 141 -0.43 96
IV.CSFT.HHZ. 2021-10-07T01:37:47.84 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCI.EHE. ML:2.9 0.010629272499999998 0.2 AML other m 2021-10-07T01:37:51.84
IV.MCI.EHN. ML:2.8 0.0098162825 0.24 AML other m 2021-10-07T01:37:52.14
IV.CSFT.HHN. ML:3.0 0.0014937775000000001 0.06 AML other m 2021-10-07T01:37:54.44
IV.CSFT.HHE. ML:3.1 0.0016088905 0.06 AML other m 2021-10-07T01:37:55.28
IV.LRP.EHN. ML:1.5 0.00017503765 0.24 AML other m 2021-10-07T01:37:57.50
IV.LRP.EHE. ML:2.0 0.0005355 0.3 AML other m 2021-10-07T01:37:57.62
IV.POFI.HNE. ML:1.8 0.00043540715 1.44 AML other m 2021-10-07T01:37:58.86
IV.POFI.HHE. ML:1.7 0.0003288713 1.42 AML other m 2021-10-07T01:37:58.85
IV.MIDA.HNN. ML:1.8 0.00029559665 0.4 AML other m 2021-10-07T01:37:59.15
IV.POFI.HHN. ML:1.6 0.0002436124 0.4 AML other m 2021-10-07T01:37:59.24
IV.VAGA.HNN. ML:2.1 0.0005847175 0.6704 AML other m 2021-10-07T01:38:03.50
IV.VAGA.HHN. ML:2.1 0.0005919619 0.68 AML other m 2021-10-07T01:38:03.50
IV.POFI.HNN. ML:1.7 0.00034231539999999997 0.5104 AML other m 2021-10-07T01:38:05.63
IV.MIDA.HNE. ML:1.9 0.0003696043 0.7 AML other m 2021-10-07T01:38:05.62
IV.VAGA.HHE. ML:1.8 0.00027100000000000003 1.22 AML other m 2021-10-07T01:38:05.75
IV.MIDA.HHN. ML:2.0 0.00037899230000000003 0.7 AML other m 2021-10-07T01:38:05.61
IV.SGG.HHN. ML:2.0 0.00026726695 0.96 AML other m 2021-10-07T01:38:06.24
IV.MIDA.HHE. ML:2.0 0.000413 0.64 AML other m 2021-10-07T01:38:07.20
IV.VVLD.HNN. ML:1.8 0.00020718965000000002 0.5 AML other m 2021-10-07T01:38:07.52
IV.RNI2.HHN. ML:2.0 0.0005560000000000001 0.54 AML other m 2021-10-07T01:38:07.59
IV.VVLD.HNE. ML:1.8 0.0002165214 0.4904 AML other m 2021-10-07T01:38:07.40
IV.RNI2.HHE. ML:1.8 0.00032014275 0.74 AML other m 2021-10-07T01:38:07.85
IV.SGG.HNN. ML:2.0 0.00027752435 1.2208 AML other m 2021-10-07T01:38:07.14
IV.SGG.HHE. ML:2.0 0.0002685 1.4 AML other m 2021-10-07T01:38:09.73
IV.INTR.HNE. ML:2.1 0.0002834262 0.82 AML other m 2021-10-07T01:38:11.45
IV.INTR.HHE. ML:2.0 0.00022799999999999999 0.78 AML other m 2021-10-07T01:38:11.43
IV.VVLD.HHE. ML:1.7 0.00015887815 0.74 AML other m 2021-10-07T01:38:12.39
IV.INTR.HHN. ML:2.0 0.0002515 0.64 AML other m 2021-10-07T01:38:13.92
IV.VVLD.HHN. ML:1.8 0.00020199999999999998 1.56 AML other m 2021-10-07T01:38:14.12
IV.T0110.HHN. ML:2.0 0.0001414588 0.64 AML other m 2021-10-07T01:38:17.14
IV.INTR.HNN. ML:2.0 0.00023477245000000003 0.9304 AML other m 2021-10-07T01:38:18.97
IV.T0110.HHE. ML:2.1 0.0001955 0.84 AML other m 2021-10-07T01:38:30.92
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
Waveforms Seismic signals in miniseed + resp format Download