Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-09-2020 and time 09:39:44 (Italy) in region 1 km SW Scapoli (IS)

A magnitude ML 1.7 earthquake occured in region: 1 km SW Scapoli (IS), on

  • 20-09-2020 07:39:44 (UTC)
  • 20-09-2020 09:39:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6110, 14.0520 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
Scapoli IS 1 680 680
Rocchetta a Volturno IS 3 1113 1793
Colli a Volturno IS 5 1349 3142
Castel San Vincenzo IS 5 516 3658
Pizzone IS 6 329 3987
Cerro al Volturno IS 7 1281 5268
Filignano IS 7 648 5916
Montaquila IS 7 2456 8372
Fornelli IS 8 1909 10281
San Biagio Saracinisco FR 10 349 10630
Acquaviva d'Isernia IS 11 425 11055
Pozzilli IS 11 2380 13435
Macchia d'Isernia IS 11 1035 14470
Acquafondata FR 11 263 14733
Viticuso FR 12 353 15086
Montenero Val Cocchiara IS 12 538 15624
Vallerotonda FR 13 1581 17205
Conca Casale IS 13 200 17405
Rionero Sannitico IS 14 1118 18523
Venafro IS 14 11280 29803
Alfedena AQ 14 864 30667
Monteroduni IS 14 2264 32931
Forlì del Sannio IS 14 675 33606
Isernia IS 15 21842 55448
Scontrone AQ 15 574 56022
Picinisco FR 16 1218 57240
Sant'Agapito IS 16 1496 58736
Miranda IS 17 1047 59783
Barrea AQ 17 726 60509
Sant'Elia Fiumerapido FR 17 6166 66675
Capriati a Volturno CE 18 1541 68216
Villa Latina FR 18 1241 69457
Roccasicura IS 18 550 70007
Settefrati FR 18 728 70735
Cervaro FR 19 8109 78844
San Vittore del Lazio FR 19 2636 81480
Longano IS 19 690 82170
Pesche IS 19 1661 83831
Pettoranello del Molise IS 19 460 84291
Civitella Alfedena AQ 20 296 84587
San Pietro Infine CE 20 944 85531
Ciorlano CE 20 426 85957
Castel di Sangro AQ 20 6538 92495

Municipalities with at least 50000 inhabitants

An earthquake occurred to
64 Km NW of Caserta (76326 inhabitants)
72 Km N of Aversa (53047 inhabitants)
77 Km N of Giugliano in Campania (122974 inhabitants)
79 Km NW of Acerra (59573 inhabitants)
80 Km N of Afragola (65057 inhabitants)
80 Km N of Marano di Napoli (59874 inhabitants)
81 Km N of Casoria (77642 inhabitants)
81 Km NW of Benevento (60091 inhabitants)
83 Km S of Chieti (51815 inhabitants)
85 Km N of Pozzuoli (81661 inhabitants)
87 Km N of Napoli (974074 inhabitants)
91 Km N of Portici (55274 inhabitants)
92 Km N of Ercolano (53709 inhabitants)
95 Km N of Torre del Greco (86275 inhabitants)
96 Km S of Pescara (121014 inhabitants)
97 Km E of Latina (125985 inhabitants)
99 Km SE of L'Aquila (69753 inhabitants)
99 Km NW of Avellino (54857 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 1.7 2020-09-20
07:39:44		 41.6112 14.052 10 2021-02-26
14:55:56		 Bollettino Sismico Italiano INGV 83229791
Reviewed
Rev100 		ML 1.6 2020-09-20
07:39:44		 41.6132 14.0582 9 2020-09-20
07:48:10		 Sala Sismica INGV-Roma 83050611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-20 07:39:44 ± 0.07
Latitude 41.6112 ± 0.0045
Longitude 14.0520 ± 0.0048
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83229791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 399
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.65111
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 83229791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-25 13:17:43

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 83050611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-20 07:48:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2020-09-20T07:40:07.00 0.6 undecidable manual S 342 72.2721 50 0.48 41
IV.INTR.HHZ. 2020-09-20T07:39:59.80 0.3 undecidable manual S 345 46.0206 50 0.28 67
IV.VVLD.HHZ. 2020-09-20T07:39:59.50 0.3 undecidable manual S 309 45.621 50 0.09 70
IV.TRIV.HHN. 2020-09-20T07:39:59.00 1.0 undecidable manual S 67 44.7219 50 -0.17 23
IV.SGG.HHZ. 2020-09-20T07:39:57.81 0.6 undecidable manual S 132 36.8298 50 0.74 39
IV.T0110.HHZ. 2020-09-20T07:39:57.17 0.1 undecidable manual P 342 72.2721 50 -0.07 89
IV.LRP.EHZ. 2020-09-20T07:39:57.50 0.6 undecidable manual S 276 38.8278 50 -0.09 47
IV.POFI.HHZ. 2020-09-20T07:39:55.80 0.6 undecidable manual S 293 30.5472 50 0.42 45
IT.OPI.HGN. 2020-09-20T07:39:54.00 0.6 undecidable manual S 315 25.9518 50 -0.16 48
IV.MCI.EHZ. 2020-09-20T07:39:53.70 0.3 undecidable manual S 236 23.8539 113 0.14 72
IV.BSSO.HHE. 2020-09-20T07:39:53.56 0.6 undecidable manual P 99 45.5211 50 0.44 43
IV.VAGA.HHZ. 2020-09-20T07:39:53.90 0.6 undecidable manual S 145 26.4513 50 -0.4 45
IV.TRIV.HHN. 2020-09-20T07:39:53.05 1.0 undecidable manual P 67 44.7219 50 0.06 23
IV.VVLD.HHZ. 2020-09-20T07:39:52.73 0.1 undecidable manual P 309 45.621 50 -0.4 87
IV.SGG.HHZ. 2020-09-20T07:39:52.23 0.3 undecidable manual P 132 36.8298 50 0.45 66
IV.INTR.HHZ. 2020-09-20T07:39:52.96 0.1 undecidable manual P 345 46.0206 50 -0.24 90
IV.LRP.EHZ. 2020-09-20T07:39:51.92 0.1 undecidable manual P 276 38.8278 50 -0.16 93
IV.RNI2.HHZ. 2020-09-20T07:39:50.20 0.6 undecidable manual S 39 13.1757 127 -0.12 49
IV.POFI.HHZ. 2020-09-20T07:39:50.75 0.3 undecidable manual P 293 30.5472 50 -0.06 72
IV.MIDA.HNE. 2020-09-20T07:39:50.90 0.6 undecidable manual S 78 17.0718 121 -0.54 44
IV.MCI.EHZ. 2020-09-20T07:39:49.72 0.1 undecidable manual P 236 23.8539 113 -0.03 98
IV.VAGA.HHZ. 2020-09-20T07:39:49.71 0.3 undecidable manual P 145 26.4513 50 -0.47 67
IT.OPI.HGN. 2020-09-20T07:39:49.85 0.3 undecidable manual P 315 25.9518 50 -0.25 70
IV.RNI2.HHZ. 2020-09-20T07:39:48.31 0.1 positive manual P 39 13.1757 127 0.43 92
IV.MIDA.HNE. 2020-09-20T07:39:48.40 0.1 undecidable manual P 78 17.0718 121 -0.13 97
IV.CERA.HHN. 2020-09-20T07:39:48.30 0.3 undecidable manual S 242 3.1968 163 0.07 75
IV.CERA.HHN. 2020-09-20T07:39:46.78 0.1 negative manual P 242 3.1968 163 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RNI2.HHN. ML:1.7 0.0005266577500000001 0.224 AML other m 2020-09-20T07:39:52.42
IV.RNI2.HNN. ML:1.7 0.0005050099 0.224 AML other m 2020-09-20T07:39:52.53
IV.MCI.EHE. ML:2.0 0.0006331549999999999 0.2624 AML other m 2020-09-20T07:39:54.66
IV.MCI.EHN. ML:1.9 0.00047690060000000003 0.224 AML other m 2020-09-20T07:39:54.89
IV.VAGA.HHE. ML:1.7 0.00026965205 0.2368 AML other m 2020-09-20T07:39:56.05
IV.VAGA.HNE. ML:1.6 0.00024320105 0.2368 AML other m 2020-09-20T07:39:56.05
IV.SGG.HHN. ML:1.3 0.00008056971 0.3392 AML other m 2020-09-20T07:39:59.34
IV.VVLD.HHN. ML:1.6 0.00012492675000000001 0.2048 AML other m 2020-09-20T07:39:59.84
IV.VVLD.HNN. ML:1.7 0.000133812275 0.1984 AML other m 2020-09-20T07:39:59.74
IV.VVLD.HHE. ML:1.4 0.00007672279999999999 0.224 AML other m 2020-09-20T07:40:01.21
IV.INTR.HHN. ML:1.7 0.000151025255 0.2432 AML other m 2020-09-20T07:40:01.16
IV.INTR.HHE. ML:1.6 0.000111074 0.224 AML other m 2020-09-20T07:40:01.25
IV.SGG.HHE. ML:1.3 0.00007917138999999999 0.3776 AML other m 2020-09-20T07:40:02.21
IV.T0110.HHN. ML:1.8 0.000095873575 0.3392 AML other m 2020-09-20T07:40:09.55
IV.T0110.HHE. ML:1.8 0.00008958608 0.2432 AML other m 2020-09-20T07:40:09.65
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