Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 23-09-2020 and time 04:03:28 (UTC) in region 2 km SE Scapoli (IS)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Scapoli (IS), on

  • 23-09-2020 04:03:28 (UTC)
  • 23-09-2020 06:03:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6010, 14.0670 at 11 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
Scapoli IS 2 680 680
Rocchetta a Volturno IS 3 1113 1793
Colli a Volturno IS 3 1349 3142
Montaquila IS 6 2456 5598
Castel San Vincenzo IS 6 516 6114
Filignano IS 6 648 6762
Fornelli IS 6 1909 8671
Cerro al Volturno IS 7 1281 9952
Pizzone IS 8 329 10281
Macchia d'Isernia IS 9 1035 11316
Pozzilli IS 10 2380 13696
Acquaviva d'Isernia IS 11 425 14121
Acquafondata FR 11 263 14384
San Biagio Saracinisco FR 12 349 14733
Viticuso FR 12 353 15086
Monteroduni IS 13 2264 17350
Montenero Val Cocchiara IS 13 538 17888
Venafro IS 13 11280 29168
Conca Casale IS 13 200 29368
Isernia IS 13 21842 51210
Vallerotonda FR 14 1581 52791
Rionero Sannitico IS 14 1118 53909
Forlì del Sannio IS 14 675 54584
Sant'Agapito IS 14 1496 56080
Alfedena AQ 15 864 56944
Miranda IS 16 1047 57991
Capriati a Volturno CE 16 1541 59532
Scontrone AQ 16 574 60106
Longano IS 17 690 60796
Picinisco FR 17 1218 62014
Roccasicura IS 18 550 62564
Pettoranello del Molise IS 18 460 63024
Pesche IS 18 1661 64685
Sant'Elia Fiumerapido FR 18 6166 70851
Ciorlano CE 18 426 71277
Barrea AQ 19 726 72003
San Vittore del Lazio FR 19 2636 74639
Fontegreca CE 19 811 75450
Cervaro FR 19 8109 83559
Villa Latina FR 19 1241 84800
San Pietro Infine CE 19 944 85744
Settefrati FR 20 728 86472
Sesto Campano IS 20 2388 88860
Gallo Matese CE 20 579 89439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km NW of Caserta (76326 inhabitants)
71 Km N of Aversa (53047 inhabitants)
76 Km N of Giugliano in Campania (122974 inhabitants)
77 Km NW of Acerra (59573 inhabitants)
78 Km N of Afragola (65057 inhabitants)
79 Km N of Marano di Napoli (59874 inhabitants)
79 Km NW of Benevento (60091 inhabitants)
80 Km N of Casoria (77642 inhabitants)
84 Km N of Pozzuoli (81661 inhabitants)
84 Km S of Chieti (51815 inhabitants)
86 Km N of Napoli (974074 inhabitants)
90 Km N of Portici (55274 inhabitants)
91 Km N of Ercolano (53709 inhabitants)
94 Km N of Torre del Greco (86275 inhabitants)
97 Km S of Pescara (121014 inhabitants)
98 Km NW of Avellino (54857 inhabitants)
98 Km E of Latina (125985 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 1.4 2020-09-23
04:03:28		 41.6013 14.0672 11 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86700681
Reviewed
Rev100 		ML 1.4 2020-09-23
04:03:28		 41.5942 14.0617 10 2020-09-23
04:28:15		 Sala Sismica INGV-Roma 83149631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-23 04:03:28 ± 0.07
Latitude 41.6013 ± 0.0045
Longitude 14.0672 ± 0.0060
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86700681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 533
Semi-minor axis of confidence ellipse (meter) 481
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 159
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.45326
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 16
Type of magnitude ML
Reference to an origin 86700681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-30 00:05:21

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 16
Type of magnitude ML
Reference to an origin 83149631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-23 04:28:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHE. 2020-09-23T04:03:45.17 0.6 undecidable manual S 11 50.3163 50 0.4 43
IV.INTR.HHZ. 2020-09-23T04:03:44.27 0.6 undecidable manual S 344 47.4192 50 0.28 44
IV.VVLD.HHZ. 2020-09-23T04:03:43.67 0.6 undecidable manual S 309 47.3193 50 -0.28 44
IV.LRP.EHN. 2020-09-23T04:03:42.19 0.6 undecidable manual S 277 40.1265 50 0.14 46
IV.POFI.HNE. 2020-09-23T04:03:40.19 0.6 undecidable manual S 294 32.1456 50 0.29 45
IV.VAGA.HHZ. 2020-09-23T04:03:38.10 0.6 undecidable manual S 146 24.8529 50 0.13 47
IV.MCI.EHE. 2020-09-23T04:03:38.00 0.3 undecidable manual S 240 24.3534 50 0.16 71
IV.LPEL.HHE. 2020-09-23T04:03:37.78 0.3 undecidable manual P 11 50.3163 50 -0.23 67
IV.VVLD.HHZ. 2020-09-23T04:03:37.13 0.1 undecidable manual P 309 47.3193 50 -0.41 86
IV.INTR.HHZ. 2020-09-23T04:03:37.29 0.3 undecidable manual P 344 47.4192 50 -0.28 66
IV.SGG.HHN. 2020-09-23T04:03:36.15 0.3 undecidable manual P 132 35.2425 50 0.47 65
IV.LRP.EHN. 2020-09-23T04:03:35.99 0.6 undecidable manual P 277 40.1265 50 -0.45 43
IV.POFI.HNE. 2020-09-23T04:03:35.39 0.3 undecidable manual P 294 32.1456 50 0.19 69
IV.MIDA.HHZ. 2020-09-23T04:03:35.19 0.6 undecidable manual S 74 16.1727 123 -0.31 46
IV.MCI.EHE. 2020-09-23T04:03:34.00 0.3 undecidable manual P 240 24.3534 50 -0.01 73
IV.RNI2.HHZ. 2020-09-23T04:03:34.86 0.6 undecidable manual S 32 13.3755 129 0.15 48
IV.VAGA.HHZ. 2020-09-23T04:03:33.74 0.3 undecidable manual P 146 24.8529 50 -0.35 68
IV.RNI2.HHZ. 2020-09-23T04:03:32.53 0.1 positive manual P 32 13.3755 129 0.32 93
IV.MIDA.HHZ. 2020-09-23T04:03:32.53 0.1 positive manual P 74 16.1727 123 -0.13 96
IV.CERA.HHZ. 2020-09-23T04:03:32.92 0.6 undecidable manual S 264 4.0959 159 0.17 49
IV.CERA.HHZ. 2020-09-23T04:03:31.03 0.1 undecidable manual P 264 4.0959 159 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HHN. ML:1.4 0.000429 0.9 AML other m 2020-09-23T04:03:34.70
IV.CERA.HNN. ML:1.4 0.000421 0.9 AML other m 2020-09-23T04:03:34.70
IV.CERA.HHE. ML:1.4 0.000388 0.46 AML other m 2020-09-23T04:03:35.59
IV.CERA.HNE. ML:1.4 0.000365 0.46 AML other m 2020-09-23T04:03:35.59
IV.MIDA.HHE. ML:1.6 0.000314 0.28 AML other m 2020-09-23T04:03:36.20
IV.MIDA.HHN. ML:1.5 0.00026849999999999997 0.14 AML other m 2020-09-23T04:03:36.52
IV.RNI2.HNE. ML:1.5 0.00029700000000000006 0.66 AML other m 2020-09-23T04:03:37.74
IV.RNI2.HHE. ML:1.5 0.0003105 0.66 AML other m 2020-09-23T04:03:37.74
IV.RNI2.HNN. ML:1.3 0.0002175 1.2 AML other m 2020-09-23T04:03:38.02
IV.RNI2.HHN. ML:1.4 0.0002305 1.18 AML other m 2020-09-23T04:03:38.02
IV.VAGA.HHE. ML:1.3 0.00011180000000000001 0.24 AML other m 2020-09-23T04:03:40.15
IV.VAGA.HNE. ML:1.3 0.0001075 0.24 AML other m 2020-09-23T04:03:40.15
IV.VAGA.HHN. ML:1.5 0.0001825 0.2 AML other m 2020-09-23T04:03:40.52
IV.VAGA.HNN. ML:1.5 0.000176 0.18 AML other m 2020-09-23T04:03:40.53
IV.INTR.HHN. ML:1.4 0.00007415 0.62 AML other m 2020-09-23T04:03:45.41
IV.INTR.HHE. ML:1.3 0.000052 0.58 AML other m 2020-09-23T04:03:53.46
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