Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 22-09-2020 and time 13:31:27 (Italy) in region 1 km S Scapoli (IS)

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

  • 22-09-2020 11:31:27 (UTC)
  • 22-09-2020 13:31:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6040, 14.0590 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 1 680 680
Rocchetta a Volturno IS 3 1113 1793
Colli a Volturno IS 4 1349 3142
Castel San Vincenzo IS 6 516 3658
Montaquila IS 6 2456 6114
Filignano IS 6 648 6762
Cerro al Volturno IS 7 1281 8043
Fornelli IS 7 1909 9952
Pizzone IS 7 329 10281
Macchia d'Isernia IS 10 1035 11316
Pozzilli IS 10 2380 13696
Acquaviva d'Isernia IS 11 425 14121
San Biagio Saracinisco FR 11 349 14470
Acquafondata FR 11 263 14733
Viticuso FR 12 353 15086
Montenero Val Cocchiara IS 12 538 15624
Conca Casale IS 13 200 15824
Venafro IS 13 11280 27104
Vallerotonda FR 13 1581 28685
Monteroduni IS 13 2264 30949
Rionero Sannitico IS 14 1118 32067
Isernia IS 14 21842 53909
Forlì del Sannio IS 15 675 54584
Alfedena AQ 15 864 55448
Sant'Agapito IS 15 1496 56944
Scontrone AQ 16 574 57518
Miranda IS 16 1047 58565
Capriati a Volturno CE 17 1541 60106
Picinisco FR 17 1218 61324
Sant'Elia Fiumerapido FR 18 6166 67490
Roccasicura IS 18 550 68040
Longano IS 18 690 68730
Barrea AQ 18 726 69456
Villa Latina FR 18 1241 70697
Pettoranello del Molise IS 19 460 71157
San Vittore del Lazio FR 19 2636 73793
Cervaro FR 19 8109 81902
Pesche IS 19 1661 83563
Settefrati FR 19 728 84291
Ciorlano CE 19 426 84717
San Pietro Infine CE 19 944 85661
Fontegreca CE 19 811 86472

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)
78 Km NW of Acerra (59573 inhabitants)
79 Km N of Afragola (65057 inhabitants)
79 Km N of Marano di Napoli (59874 inhabitants)
80 Km N of Casoria (77642 inhabitants)
80 Km NW of Benevento (60091 inhabitants)
84 Km S of Chieti (51815 inhabitants)
84 Km N of Pozzuoli (81661 inhabitants)
86 Km N of Napoli (974074 inhabitants)
90 Km N of Portici (55274 inhabitants)
92 Km N of Ercolano (53709 inhabitants)
94 Km N of Torre del Greco (86275 inhabitants)
97 Km S of Pescara (121014 inhabitants)
97 Km E of Latina (125985 inhabitants)
98 Km NW of Avellino (54857 inhabitants)
100 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 1.7 2020-09-22
11:31:27		 41.604 14.0588 11 2021-02-26
14:56:02		 Bollettino Sismico Italiano INGV 84416401
Reviewed
Rev100 		ML 1.7 2020-09-22
11:31:27		 41.6172 14.063 10 2020-09-22
11:41:38		 Sala Sismica INGV-Roma 83129271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-22 11:31:27 ± 0.07
Latitude 41.6040 ± 0.0045
Longitude 14.0588 ± 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 84416401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 526
Semi-minor axis of confidence ellipse (meter) 402
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 50
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) 72
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 24
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45236
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 17
Type of magnitude ML
Reference to an origin 84416401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-13 09:51:24

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 83129271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-22 11:41:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LPEL.HHE. 2020-09-22T11:31:43.73 0.6 undecidable manual S 12 50.2164 50 0.23 44
IV.VCEL.EHZ. 2020-09-22T11:31:42.86 3.0 undecidable manual Sg 0.3 0
IV.VVLD.HHZ. 2020-09-22T11:31:42.43 0.6 undecidable manual S 309 46.5201 50 -0.1 46
IV.INTR.HHZ. 2020-09-22T11:31:42.82 0.6 undecidable manual S 344 46.9197 50 0.18 45
IV.SGG.HHN. 2020-09-22T11:31:39.44 0.3 undecidable manual S 132 35.9418 50 -0.25 68
IV.POFI.HHZ. 2020-09-22T11:31:38.36 0.6 undecidable manual S 294 31.3464 50 -0.12 47
IV.VAGA.HHZ. 2020-09-22T11:31:37.00 0.6 undecidable manual S 145 25.4523 50 0.09 48
IT.OPI.HGE. 2020-09-22T11:31:37.12 0.3 undecidable manual S 315 26.8509 50 -0.16 70
IV.MCI.EHZ. 2020-09-22T11:31:36.41 0.6 undecidable manual S 239 23.9538 50 -0.09 48
IV.INTR.HHZ. 2020-09-22T11:31:36.16 0.1 undecidable manual P 344 46.9197 50 -0.12 91
IV.LPEL.HHE. 2020-09-22T11:31:36.87 0.3 undecidable manual P 12 50.2164 50 0.09 68
IV.PIGN.HNE. 2020-09-22T11:31:36.46 0.3 undecidable manual P 167 45.9207 50 0.34 66
IV.VVLD.HHZ. 2020-09-22T11:31:35.73 0.3 undecidable manual P 309 46.5201 50 -0.49 63
IV.LRP.EHZ. 2020-09-22T11:31:35.65 0.1 undecidable manual P 277 39.4272 50 0.53 84
IV.RNI2.HHZ. 2020-09-22T11:31:34.11 0.6 undecidable manual S 35 13.4754 129 0.52 44
IV.SGG.HHN. 2020-09-22T11:31:34.84 0.3 undecidable manual P 132 35.9418 50 0.26 68
IV.MIDA.HHZ. 2020-09-22T11:31:34.02 0.6 undecidable manual S 75 16.7721 123 -0.49 44
IV.POFI.HHZ. 2020-09-22T11:31:33.77 0.3 undecidable manual P 294 31.3464 50 -0.11 71
IV.MCI.EHZ. 2020-09-22T11:31:33.04 0.3 undecidable manual P 239 23.9538 50 0.31 69
IT.OPI.HGE. 2020-09-22T11:31:32.87 0.3 undecidable manual P 315 26.8509 50 -0.32 68
IV.VAGA.HHZ. 2020-09-22T11:31:32.71 0.3 undecidable manual P 145 25.4523 50 -0.26 69
IV.MIDA.HHZ. 2020-09-22T11:31:31.40 0.1 undecidable manual P 75 16.7721 123 -0.19 95
IV.CERA.HHZ. 2020-09-22T11:31:31.36 0.6 undecidable manual S 258 3.3966 162 -0.18 49
IV.RNI2.HHZ. 2020-09-22T11:31:31.34 0.1 positive manual P 35 13.4754 129 0.28 94
IV.CERA.HHZ. 2020-09-22T11:31:29.83 0.1 negative manual P 258 3.3966 162 -0.04 100
IV.RMP.HHZ. 2020-09-22T11:31:28.55 3.0 positive manual P -1.52 0
IV.ROSPO.HHZ. 2020-09-22T11:31:27.92 3.0 positive manual Pn -1.37 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CERA.HNE. ML:1.7 0.00078856925 0.1792 AML other m 2020-09-22T11:31:31.81
IV.CERA.HHE. ML:1.7 0.000833 0.18 AML other m 2020-09-22T11:31:31.81
IV.CERA.HNN. ML:1.9 0.00126 1.3 AML other m 2020-09-22T11:31:31.81
IV.CERA.HHN. ML:1.9 0.001345 1.32 AML other m 2020-09-22T11:31:31.81
IV.RNI2.HHE. ML:1.5 0.0003406822 0.3392 AML other m 2020-09-22T11:31:34.66
IV.RNI2.HHN. ML:1.7 0.000519 0.64 AML other m 2020-09-22T11:31:34.58
IV.VAGA.HNE. ML:1.5 0.00016720089999999998 0.2752 AML other m 2020-09-22T11:31:37.23
IV.VAGA.HHE. ML:1.5 0.00017857985 0.256 AML other m 2020-09-22T11:31:37.22
IV.MCI.EHN. ML:1.8 0.00039150000000000003 0.32 AML other m 2020-09-22T11:31:37.03
IV.VAGA.HNN. ML:1.6 0.00020110130000000002 0.32 AML other m 2020-09-22T11:31:37.36
IV.VAGA.HHN. ML:1.6 0.0002156361 0.3584 AML other m 2020-09-22T11:31:37.36
IV.MCI.EHE. ML:2.1 0.0007664999999999999 0.24 AML other m 2020-09-22T11:31:37.67
IV.VVLD.HHN. ML:1.7 0.00013350000000000002 0.2 AML other m 2020-09-22T11:31:42.76
IV.VVLD.HHE. ML:1.4 0.00008028431 0.4224 AML other m 2020-09-22T11:31:42.94
IV.INTR.HHN. ML:1.7 0.00013154180000000002 0.5248 AML other m 2020-09-22T11:31:43.26
IV.INTR.HHE. ML:1.8 0.000163 0.8 AML other m 2020-09-22T11:31:43.78
IV.SGG.HHE. ML:1.4 0.00010339999999999999 0.38 AML other m 2020-09-22T11:31:45.21
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