Earthquake with magnitude of ML 1.4 on date 21-09-2020 and time 14:56:44 (Italy) in region 2 km W Belmonte Castello (FR)

A magnitude ML 1.4 earthquake occured in region: 2 km W Belmonte Castello (FR), on

  • 21-09-2020 12:56:44 (UTC)
  • 21-09-2020 14:56:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.58, 13.79 at 12 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
Belmonte Castello FR 2 739 739
Terelle FR 3 422 1161
Atina FR 5 4316 5477
Villa Latina FR 6 1241 6718
Casalattico FR 7 574 7292
Villa Santa Lucia FR 7 2632 9924
Sant'Elia Fiumerapido FR 8 6166 16090
Colle San Magno FR 8 699 16789
Casalvieri FR 9 2698 19487
Castrocielo FR 9 3965 23452
Piedimonte San Germano FR 9 6535 29987
Gallinaro FR 9 1269 31256
Cassino FR 10 36142 67398
Roccasecca FR 10 7365 74763
Picinisco FR 10 1218 75981
Vallerotonda FR 11 1581 77562
Aquino FR 12 5370 82932
Settefrati FR 12 728 83660
San Biagio Saracinisco FR 13 349 84009
Santopadre FR 13 1357 85366
Alvito FR 13 2713 88079
Vicalvi FR 13 783 88862
Fontechiari FR 14 1303 90165
Acquafondata FR 14 263 90428
Cervaro FR 14 8109 98537
San Donato Val di Comino FR 15 2107 100644
Colfelice FR 15 1932 102576
Posta Fibreno FR 15 1139 103715
Pignataro Interamna FR 15 2595 106310
Viticuso FR 16 353 106663
Pontecorvo FR 17 13242 119905
Arpino FR 17 7262 127167
Rocca d'Arce FR 17 959 128126
San Vittore del Lazio FR 17 2636 130762
Arce FR 18 5756 136518
San Giorgio a Liri FR 19 3164 139682
Broccostella FR 19 2741 142423
Sant'Apollinare FR 20 1919 144342

Municipalities with at least 50000 inhabitants

An earthquake occurred to
72 Km NW of Caserta (76326 inhabitants)
75 Km E of Latina (125985 inhabitants)
76 Km NW of Aversa (53047 inhabitants)
80 Km NW of Giugliano in Campania (122974 inhabitants)
82 Km NW of Marano di Napoli (59874 inhabitants)
85 Km NW of Afragola (65057 inhabitants)
85 Km NW of Pozzuoli (81661 inhabitants)
85 Km E of Velletri (53303 inhabitants)
85 Km NW of Acerra (59573 inhabitants)
86 Km NW of Casoria (77642 inhabitants)
91 Km NW of Napoli (974074 inhabitants)
92 Km SW of Chieti (51815 inhabitants)
92 Km SE of L'Aquila (69753 inhabitants)
93 Km E of Tivoli (56533 inhabitants)
95 Km E of Aprilia (73446 inhabitants)
96 Km NW of Portici (55274 inhabitants)
97 Km NW of Benevento (60091 inhabitants)
97 Km NW of Ercolano (53709 inhabitants)
97 Km E of Anzio (54211 inhabitants)
100 Km NW of Torre del Greco (86275 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.4 2020-09-21
12:56:44
41.58 13.79 12 2020-09-21
13:04:27
Sala Sismica INGV-Roma 83102661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-21 12:56:44 ± 0.17
Latitude 41.58 ± 0.01
Longitude 13.79 ± 0.01
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83102661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 834
Semi-minor axis of confidence ellipse (meter) 585
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 11
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
Epicentral distance of station farthest from the epicenter (degree) 0.20325
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 83102661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-21 13:04:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2020-09-21T12:58:15.28 3.0 undecidable manual Sg 11.05 0
IV.CROCE.HHZ. 2020-09-21T12:58:14.52 3.0 undecidable manual Sn -0.69 0
OX.ACOM.HHZ. 2020-09-21T12:58:12.55 3.0 undecidable manual Pg 15.25 0
IV.PESA.HHZ. 2020-09-21T12:58:06.45 3.0 undecidable manual Sg 5.46 0
SL.KOGS.BHZ. 2020-09-21T12:58:02.22 3.0 negative manual Pn 2.44 0
IV.APEC.HHZ. 2020-09-21T12:58:02.34 3.0 undecidable manual Sg 8.35 0
MN.TIR.HHZ. 2020-09-21T12:58:00.17 3.0 undecidable manual Pg 18.98 0
GU.GORR.HHZ. 2020-09-21T12:57:55.22 3.0 negative manual Pg 8.21 0
IV.FOSV.EHZ. 2020-09-21T12:57:53.36 3.0 undecidable manual Sg 7.34 0
IV.PE3.EHZ. 2020-09-21T12:57:47.20 3.0 undecidable manual Sn -9.53 0
GU.RNCA.HHZ. 2020-09-21T12:57:46.95 3.0 negative manual Pn -1 0
SL.BOJS.BHZ. 2020-09-21T12:57:44.52 3.0 negative manual Pn -0.15 0
IV.RIBO.EHZ.01 2020-09-21T12:57:44.46 3.0 undecidable manual Sn -9.39 0
IV.LPDG.HHZ. 2020-09-21T12:57:42.94 3.0 undecidable manual Pn -5.82 0
IV.MF5.EHZ. 2020-09-21T12:57:37.87 3.0 undecidable manual Sg 1.52 0
IV.IFIL.HHZ. 2020-09-21T12:57:33.21 3.0 undecidable manual Sn -0.99 0
IV.CSNT.HHZ. 2020-09-21T12:57:30.22 3.0 undecidable manual Pg 7.66 0
IV.CRAC.EHZ. 2020-09-21T12:57:29.95 3.0 undecidable manual Sn -0.85 0
IV.ROSPO.HHZ. 2020-09-21T12:57:28.83 3.0 undecidable manual Sg 5.1 0
IV.ECTS.HHZ. 2020-09-21T12:57:24.76 3.0 undecidable manual Pg 6.65 0
IV.LNSS.HHZ. 2020-09-21T12:57:21.25 3.0 undecidable manual Sn -7.22 0
IV.NOCI.HHZ. 2020-09-21T12:57:17.77 3.0 positive manual Pg 6.12 0
IV.CMPR.HHZ. 2020-09-21T12:57:15.66 3.0 undecidable manual Sg 4.94 0
XK.GIZZ.HHZ. 2020-09-21T12:57:11.68 3.0 undecidable manual Pn -0.32 0
IV.RCAV.EHZ. 2020-09-21T12:56:54.87 3.0 undecidable manual Pg -0.06 0
IV.CERA.HHZ. 2020-09-21T12:56:52.50 0.3 undecidable manual S 83 0.1736 100 0.54 62
IV.LIK.EHN.01 2020-09-21T12:56:52.75 0.3 undecidable manual S 246 0.1871 98 0.41 64
IV.CMPR.HHZ. 2020-09-21T12:56:52.22 3.0 negative manual P -1.98 0
IV.POFI.HHZ. 2020-09-21T12:56:51.32 0.1 undecidable manual S 338 0.152 104 -0.02 97
IV.LRP.EHZ. 2020-09-21T12:56:51.81 0.1 undecidable manual S 295 0.1664 101 0.07 95
IT.OPI.HGZ. 2020-09-21T12:56:49.30 0.1 undecidable manual P 9 0.2032 97 0.08 94
IV.MCI.EHZ. 2020-09-21T12:56:49.57 0.3 undecidable manual S 167 0.0872 129 -0.02 75
IV.LIK.EHN.01 2020-09-21T12:56:49.16 0.1 undecidable manual P 246 0.1871 98 0.2 92
IV.LRP.EHZ. 2020-09-21T12:56:48.37 0.1 undecidable manual P 295 0.1664 101 -0.24 100
IV.CERA.HHZ. 2020-09-21T12:56:48.70 0.1 undecidable manual P 83 0.1736 100 -0.04 97
IV.POFI.HHZ. 2020-09-21T12:56:48.21 0.1 undecidable manual P 338 0.152 104 -0.16 100
IV.MCI.EHZ. 2020-09-21T12:56:46.87 0.1 undecidable manual P 167 0.0872 129 -0.5 95
IV.IFOR.HHZ. 2020-09-21T12:56:42.19 3.0 positive manual P 1.17 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCI.EHE. ML:2 0.00107 0.22 AML other m 2020-09-21T12:56:50.06
IV.MCI.EHN. ML:1.8 0.000761 0.28 AML other m 2020-09-21T12:56:50.47
IV.LRP.EHE. ML:1.5 0.0002515 0.66 AML other m 2020-09-21T12:56:52.71
IV.POFI.HHE. ML:1.2 0.000127 0.62 AML other m 2020-09-21T12:56:52.90
IV.LRP.EHN. ML:1.1 8.45E-5 0.34 AML other m 2020-09-21T12:56:52.76
IV.CERA.HHE. ML:1.3 0.000131 0.52 AML other m 2020-09-21T12:56:53.31
IV.POFI.HHN. ML:1 9.1704015E-5 0.4224 AML other m 2020-09-21T12:56:52.20
IV.CERA.HHN. ML:1.5 0.0002243709 0.7424 AML other m 2020-09-21T12:56:55.04
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download