Earthquake with magnitude of ML 1.4 on date 21-09-2020 and time 16:36:56 (UTC) in region 3 km W Colli a Volturno (IS)

A magnitude ML 1.4 earthquake occured in region: 3 km W Colli a Volturno (IS), on

  • 21-09-2020 16:36:56 (UTC)
  • 21-09-2020 18:36:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.59, 14.07 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
Colli a Volturno IS 3 1349 1349
Scapoli IS 4 680 2029
Montaquila IS 4 2456 4485
Rocchetta a Volturno IS 5 1113 5598
Filignano IS 5 648 6246
Fornelli IS 6 1909 8155
Castel San Vincenzo IS 8 516 8671
Cerro al Volturno IS 8 1281 9952
Pozzilli IS 8 2380 12332
Macchia d'Isernia IS 9 1035 13367
Pizzone IS 10 329 13696
Viticuso FR 11 353 14049
Acquafondata FR 11 263 14312
Monteroduni IS 11 2264 16576
Venafro IS 11 11280 27856
Conca Casale IS 11 200 28056
Acquaviva d'Isernia IS 12 425 28481
San Biagio Saracinisco FR 12 349 28830
Isernia IS 13 21842 50672
Sant'Agapito IS 14 1496 52168
Vallerotonda FR 14 1581 53749
Capriati a Volturno CE 14 1541 55290
Montenero Val Cocchiara IS 14 538 55828
Rionero Sannitico IS 15 1118 56946
Forlì del Sannio IS 15 675 57621
Miranda IS 16 1047 58668
Longano IS 16 690 59358
Ciorlano CE 17 426 59784
Alfedena AQ 17 864 60648
Fontegreca CE 17 811 61459
Pettoranello del Molise IS 17 460 61919
San Vittore del Lazio FR 18 2636 64555
Pesche IS 18 1661 66216
Sant'Elia Fiumerapido FR 18 6166 72382
Cervaro FR 18 8109 80491
San Pietro Infine CE 18 944 81435
Scontrone AQ 18 574 82009
Picinisco FR 18 1218 83227
Sesto Campano IS 18 2388 85615
Roccasicura IS 18 550 86165
Gallo Matese CE 19 579 86744
Villa Latina FR 20 1241 87985
Castelpizzuto IS 20 155 88140

Municipalities with at least 50000 inhabitants

An earthquake occurred to
61 Km NW of Caserta (76326 inhabitants)
69 Km N of Aversa (53047 inhabitants)
74 Km N of Giugliano in Campania (122974 inhabitants)
75 Km NW of Acerra (59573 inhabitants)
76 Km N of Afragola (65057 inhabitants)
77 Km N of Marano di Napoli (59874 inhabitants)
78 Km N of Casoria (77642 inhabitants)
78 Km NW of Benevento (60091 inhabitants)
82 Km N of Pozzuoli (81661 inhabitants)
84 Km N of Napoli (974074 inhabitants)
86 Km S of Chieti (51815 inhabitants)
88 Km N of Portici (55274 inhabitants)
89 Km N of Ercolano (53709 inhabitants)
92 Km N of Torre del Greco (86275 inhabitants)
96 Km NW of Avellino (54857 inhabitants)
98 Km E of Latina (125985 inhabitants)
99 Km S of Pescara (121014 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
16:36:56
41.59 14.07 11 2020-09-21
16:46:21
Sala Sismica INGV-Roma 83110021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-21 16:36:56 ± 0.11
Latitude 41.59 ± 0.01
Longitude 14.07 ± 0.01
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 83110021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 755
Semi-minor axis of confidence ellipse (meter) 575
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 150
Circular confidence region, given by single value of horizontal uncertainty (meter) 750
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46765
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 83110021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-21 16:46:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ZCCA.HNZ. 2020-09-21T16:38:42.94 3.0 undecidable manual Sg 11.71 0
IV.SCIAR.HHZ. 2020-09-21T16:38:30.51 3.0 undecidable manual Sn 0.19 0
IV.IMOL.HNZ. 2020-09-21T16:38:23.89 3.0 undecidable manual Sn 1.23 0
CH.MUGIO.HHZ. 2020-09-21T16:38:21.33 3.0 undecidable manual Pn 4.49 0
XK.ALB1.HHZ. 2020-09-21T16:38:20.29 3.0 undecidable manual Sg 5.37 0
IV.CRTC.HHZ. 2020-09-21T16:38:07.96 3.0 undecidable manual Sg 8.24 0
IV.LADO.EHZ. 2020-09-21T16:38:05.88 3.0 undecidable manual Sn -8.06 0
IV.MURB.HHZ. 2020-09-21T16:37:59.87 3.0 undecidable manual Sg 6.7 0
IV.GMB.BHZ. 2020-09-21T16:37:51.92 3.0 undecidable manual Pg 5.6 0
IV.IVPL.HHZ. 2020-09-21T16:37:42.48 3.0 negative manual Pn 0.79 0
IV.ARRO.EHZ. 2020-09-21T16:37:38.13 3.0 undecidable manual Sn -0.37 0
IV.MURB.HHZ. 2020-09-21T16:37:31.49 3.0 positive manual Pg 4.63 0
IV.CAFI.HHZ. 2020-09-21T16:37:27.72 3.0 undecidable manual Pn -3.73 0
IV.CMPR.HHZ. 2020-09-21T16:37:20.92 3.0 undecidable manual Pg 4.13 0
IV.MTMR.HNZ. 2020-09-21T16:37:20.06 3.0 undecidable manual Sg 0.34 0
IV.CAFE.HHZ. 2020-09-21T16:37:17.72 3.0 undecidable manual Sn -2.63 0
IV.INTR.HHZ. 2020-09-21T16:37:12.05 0.6 undecidable manual S 344 0.4425 50 -0.08 45
IV.POFI.HHZ. 2020-09-21T16:37:08.16 0.3 undecidable manual S 296 0.2986 50 0.3 70
IV.LPEL.HHZ. 2020-09-21T16:37:06.10 0.3 undecidable manual P 10 0.4676 50 0.16 69
IV.CAFE.HHZ. 2020-09-21T16:37:06.93 3.0 undecidable manual Pg -1.49 0
IV.MCI.EHZ. 2020-09-21T16:37:06.01 0.3 undecidable manual S 244 0.2149 50 0.62 64
IV.INTR.HHZ. 2020-09-21T16:37:05.42 0.3 undecidable manual P 344 0.4425 50 -0.09 68
IV.VAGA.HHZ. 2020-09-21T16:37:05.92 0.6 undecidable manual S 144 0.2104 50 0.67 43
IV.MIDA.HHZ. 2020-09-21T16:37:03.11 0.3 undecidable manual S 68 0.1475 123 -0.15 73
IV.RNI2.HHZ. 2020-09-21T16:37:03.41 0.3 undecidable manual S 28 0.1313 126 0.66 62
IV.POFI.HHZ. 2020-09-21T16:37:02.67 0.1 undecidable manual P 296 0.2986 50 -0.37 88
IV.VAGA.HHZ. 2020-09-21T16:37:01.45 0.1 undecidable manual P 144 0.2104 50 -0.09 95
IV.MCI.EHZ. 2020-09-21T16:37:01.58 0.3 undecidable manual P 244 0.2149 50 -0.05 73
IV.CERA.HHZ. 2020-09-21T16:37:00.22 0.1 undecidable manual S 286 0.0405 157 -0.28 100
IV.RNI2.HHZ. 2020-09-21T16:37:00.14 0.1 positive manual P 28 0.1313 126 0.04 99
IV.MIDA.HHZ. 2020-09-21T16:37:00.19 0.1 undecidable manual P 68 0.1475 123 -0.2 96
IV.SGG.HHZ. 2020-09-21T16:36:59.85 3.0 undecidable manual P 0
IV.CERA.HHZ. 2020-09-21T16:36:58.62 1.0 undecidable manual P 286 0.0405 157 -0.17 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HNN. ML:1.5 0.0005945 0.78 AML other m 2020-09-21T16:37:00.56
IV.CERA.HHN. ML:1.6 0.0006405 0.76 AML other m 2020-09-21T16:37:00.56
IV.CERA.HHE. ML:1.4 0.000437 0.46 AML other m 2020-09-21T16:37:00.60
IV.CERA.HNE. ML:1.4 0.0004145 0.46 AML other m 2020-09-21T16:37:00.60
IV.RNI2.HHN. ML:1.4 0.0002305 0.66 AML other m 2020-09-21T16:37:03.37
IV.RNI2.HNN. ML:1.4 0.0002215 0.66 AML other m 2020-09-21T16:37:03.70
IV.MIDA.HHE. ML:1.5 0.000276 0.78 AML other m 2020-09-21T16:37:03.97
IV.MIDA.HHN. ML:1.6 0.000316 1.5 AML other m 2020-09-21T16:37:04.83
IV.RNI2.HNE. ML:1.4 0.000261 0.16 AML other m 2020-09-21T16:37:05.09
IV.RNI2.HHE. ML:1.5 0.000278 0.14 AML other m 2020-09-21T16:37:05.08
IV.MCI.EHN. ML:1.5 0.000211 0.26 AML other m 2020-09-21T16:37:06.71
IV.MCI.EHE. ML:1.6 0.00026 0.28 AML other m 2020-09-21T16:37:07.31
IV.VAGA.HNN. ML:1.4 0.000156 0.9 AML other m 2020-09-21T16:37:07.77
IV.VAGA.HHN. ML:1.4 0.00016 0.9 AML other m 2020-09-21T16:37:07.77
IV.VAGA.HHE. ML:1.2 9.225E-5 0.3 AML other m 2020-09-21T16:37:07.86
IV.VAGA.HNE. ML:1.2 8.815E-5 0.32 AML other m 2020-09-21T16:37:07.87
IV.POFI.HHE. ML:0.8 2.335E-5 0.78 AML other m 2020-09-21T16:37:08.90
IV.POFI.HHN. ML:0.8 2.725E-5 1.3 AML other m 2020-09-21T16:37:10.03
IV.INTR.HHE. ML:1.4 6.8E-5 0.78 AML other m 2020-09-21T16:37:12.57
IV.INTR.HHN. ML:1.5 9.16E-5 1.44 AML other m 2020-09-21T16:37:12.96
IV.LPEL.HHN. ML:1.4 6.685E-5 0.22 AML other m 2020-09-21T16:37:13.76
IV.LPEL.HHE. ML:1.4 5.86E-5 1.2 AML other m 2020-09-21T16:37:14.09
IV.IMOL.HNN. ML:4.2 0.00129 0.06 AML other m 2020-09-21T16:37:59.24
IV.IMOL.HNE. ML:4.2 0.001265 1.34 AML other m 2020-09-21T16:37:59.26
IV.MURB.HHN. ML:2.5 7.935E-5 0.16 AML other m 2020-09-21T16:38:10.35
IV.MURB.HHE. ML:2.4 6.12E-5 1.3 AML other m 2020-09-21T16:38:11.80
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