Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 20-09-2021 and time 15:17:45 (Italy) in region 3 km W Caposele (AV)

A magnitude ML 1.9 earthquake occured in region: 3 km W Caposele (AV), on

  • 20-09-2021 13:17:45 (UTC)
  • 20-09-2021 15:17:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.8040, 15.1940 at 15 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
Caposele AV 3 3483 3483
Calabritto AV 3 2391 5874
Senerchia AV 7 842 6716
Teora AV 7 1537 8253
Lioni AV 8 6201 14454
Laviano SA 10 1438 15892
Valva SA 10 1643 17535
Santomenna SA 11 443 17978
Bagnoli Irpino AV 11 3217 21195
Castelnuovo di Conza SA 11 619 21814
Colliano SA 12 3638 25452
Oliveto Citra SA 13 3802 29254
Nusco AV 13 4203 33457
Conza della Campania AV 13 1373 34830
Acerno SA 13 2783 37613
Sant'Angelo dei Lombardi AV 14 4250 41863
Morra De Sanctis AV 14 1297 43160
Montella AV 16 7780 50940
Sant'Andrea di Conza AV 16 1539 52479
Cassano Irpino AV 16 982 53461
Rocca San Felice AV 17 851 54312
Torella dei Lombardi AV 17 2144 56456
Guardia Lombardi AV 17 1718 58174
Campagna SA 17 16703 74877
Pescopagano PZ 18 1910 76787
Contursi Terme SA 18 3394 80181
Palomonte SA 18 3985 84166
Andretta AV 18 1927 86093
Cairano AV 18 326 86419
Castelfranci AV 19 2041 88460

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Battipaglia (50786 inhabitants)
36 Km E of Avellino (54857 inhabitants)
39 Km E of Salerno (135261 inhabitants)
43 Km E of Cava de' Tirreni (53659 inhabitants)
50 Km SE of Benevento (60091 inhabitants)
55 Km W of Potenza (67122 inhabitants)
57 Km E of Scafati (50787 inhabitants)
61 Km E of Castellammare di Stabia (66466 inhabitants)
70 Km E of Torre del Greco (86275 inhabitants)
71 Km E of Portici (55274 inhabitants)
71 Km E of Acerra (59573 inhabitants)
71 Km E of Ercolano (53709 inhabitants)
76 Km E of Afragola (65057 inhabitants)
77 Km E of Casoria (77642 inhabitants)
78 Km E of Caserta (76326 inhabitants)
79 Km SW of Cerignola (58396 inhabitants)
79 Km SW of Foggia (151991 inhabitants)
79 Km E of Napoli (974074 inhabitants)
85 Km E of Giugliano in Campania (122974 inhabitants)
85 Km E of Marano di Napoli (59874 inhabitants)
85 Km E of Aversa (53047 inhabitants)
93 Km E of Pozzuoli (81661 inhabitants)
99 Km S of San Severo (53905 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 1.9 2021-09-20
13:17:45		 40.8042 15.1942 15 2022-03-30
13:04:30		 Bollettino Sismico Italiano INGV 99740911
Reviewed
Rev100 		ML 2.0 2021-09-20
13:17:45		 40.8088 15.2038 15 2021-09-20
13:22:53		 Sala Sismica INGV-Roma 95664411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-20 13:17:45 ± 0.09
Latitude 40.8042 ± 0.0036
Longitude 15.1942 ± 0.0071
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99740911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 459
Semi-minor axis of confidence ellipse (meter) 402
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 29
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 99740911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-13 12:36:10

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 95664411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-20 13:22:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-09-20T13:17:57.45 0.3 undecidable manual S 165 36.1416 99 -0.4 67
IX.RDM3.HHZ.02 2021-09-20T13:17:56.94 0.6 undecidable manual S 74 29.748 102 0.76 39
IV.SGO.HHZ. 2021-09-20T13:17:56.16 0.3 undecidable manual S 161 28.6491 102 0.27 69
IV.CAFE.HHZ. 2021-09-20T13:17:55.30 0.3 undecidable manual S 8 25.0527 105 0.34 69
IV.PAOL.HHZ. 2021-09-20T13:17:54.30 3.0 undecidable manual P -2.27 0
IX.MNT3.EHZ.02 2021-09-20T13:17:53.01 0.3 undecidable manual S 283 16.1727 120 0.26 71
IX.CMP3.EHZ.02 2021-09-20T13:17:53.93 0.3 undecidable manual S 210 19.4694 113 0.4 69
IX.SALI.HNZ.01 2021-09-20T13:17:52.46 0.3 undecidable manual S 355 13.9749 125 0.19 72
IV.VULT.HHZ. 2021-09-20T13:17:52.81 0.3 undecidable manual P 65 39.1275 98 -0.36 67
IX.SCL3.EHZ.02 2021-09-20T13:17:52.03 3.0 positive manual P 0.38 0
IX.COL3.HHZ.02 2021-09-20T13:17:52.90 0.6 undecidable manual S 139 17.2716 117 -0.13 49
IX.RDM3.HHZ.02 2021-09-20T13:17:52.05 0.3 undecidable manual P 74 29.748 102 0.31 68
IV.CDRU.HHZ. 2021-09-20T13:17:52.38 0.1 undecidable manual P 165 36.1416 99 -0.33 90
IV.SNAL.HHZ. 2021-09-20T13:17:52.35 0.6 undecidable manual S 5 13.4754 126 0.19 48
IX.LGS3.HNZ.01 2021-09-20T13:17:51.43 0.3 undecidable manual P 320 26.4513 104 0.18 71
IX.CSG3.HNZ. 2021-09-20T13:17:51.01 0.6 undecidable manual P 86 22.6551 108 0.33 46
IX.NSC3.EHZ.02 2021-09-20T13:17:51.17 0.6 undecidable manual S 308 7.6812 146 0.1 75
IV.SGO.HHZ. 2021-09-20T13:17:51.46 0.1 undecidable manual P 161 28.6491 102 -0.12 96
IX.SNR3.EHZ.02 2021-09-20T13:17:51.42 0.3 undecidable manual S 181 7.5813 146 0.36 70
IV.CAFE.HHZ. 2021-09-20T13:17:50.87 0.1 positive manual P 8 25.0527 105 -0.17 95
IV.MCRV.HHZ. 2021-09-20T13:17:50.29 0.3 undecidable manual S 222 3.1968 165 -0.29 72
IX.CLT3.EHZ.02 2021-09-20T13:17:50.49 0.3 undecidable manual P 58 20.7681 111 0.08 73
IX.CMP3.EHZ.02 2021-09-20T13:17:50.35 0.1 undecidable manual P 210 19.4694 113 0.14 97
IV.SNAL.HHZ. 2021-09-20T13:17:49.30 0.1 positive manual P 5 13.4754 126 -0.12 98
IX.MNT3.EHZ.02 2021-09-20T13:17:49.77 0.1 undecidable manual P 283 16.1727 120 0.01 100
IX.COL3.HHZ.02 2021-09-20T13:17:49.74 0.1 undecidable manual P 139 17.2716 117 -0.18 96
IX.SNR3.EHZ.02 2021-09-20T13:17:48.85 0.1 negative manual P 181 7.5813 146 0.06 100
IX.SALI.HNZ.01 2021-09-20T13:17:48.90 0.3 undecidable manual P 355 13.9749 125 -0.58 65
IV.MCRV.HHZ. 2021-09-20T13:17:48.40 0.1 undecidable manual P 222 3.1968 165 -0.11 100
IX.LIO3.HHZ.02 2021-09-20T13:17:48.82 0.1 undecidable manual P 354 10.3785 136 -0.23 96
IX.NSC3.EHZ.02 2021-09-20T13:17:48.65 0.1 negative manual P 308 7.6812 146 -0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCRV.HHE. ML:1.9 0.0009629985 0.1216 AML other m 2021-09-20T13:17:51.27
IX.NSC3.EHN.02 ML:2.0 0.0010594222499999998 0.096 AML other m 2021-09-20T13:17:51.87
IX.NSC3.EHE.02 ML:1.9 0.000814 0.8 AML other m 2021-09-20T13:17:51.70
IV.MCRV.HHN. ML:2.3 0.002360232 0.1216 AML other m 2021-09-20T13:17:50.75
IX.SNR3.EHN.02 ML:2.4 0.0024282845000000003 0.1472 AML other m 2021-09-20T13:17:52.38
IX.SNR3.HNN.01 ML:2.4 0.002632457 0.1472 AML other m 2021-09-20T13:17:52.38
IV.SNAL.HNN. ML:2.0 0.0008437670500000001 0.1792 AML other m 2021-09-20T13:17:52.84
IV.SNAL.HHN. ML:2.0 0.0009185714 0.16 AML other m 2021-09-20T13:17:52.84
IX.SNR3.EHE.02 ML:2.0 0.0011632855 0.16 AML other m 2021-09-20T13:17:51.81
IX.SNR3.HNE.01 ML:2.0 0.001244359 0.1728 AML other m 2021-09-20T13:17:51.81
IV.SNAL.HNE. ML:1.8 0.00053526005 0.16 AML other m 2021-09-20T13:17:52.00
IX.MNT3.HNE.01 ML:1.9 0.0005898647500000001 0.1152 AML other m 2021-09-20T13:17:53.47
IX.MNT3.EHE.02 ML:1.9 0.0006725 0.12 AML other m 2021-09-20T13:17:53.47
IX.MNT3.EHN.02 ML:2.2 0.0011553940000000001 0.096 AML other m 2021-09-20T13:17:53.83
IX.MNT3.HNN.01 ML:2.1 0.0010117899 0.096 AML other m 2021-09-20T13:17:53.83
IX.COL3.HHE.02 ML:2.1 0.0008572016499999999 0.16 AML other m 2021-09-20T13:17:54.06
IV.SNAL.HHE. ML:1.8 0.0005741681 0.16 AML other m 2021-09-20T13:17:52.00
IX.COL3.HHN.02 ML:2.0 0.0007350000000000001 1.1 AML other m 2021-09-20T13:17:54.77
IV.CAFE.HHE. ML:1.9 0.00045689045 0.2176 AML other m 2021-09-20T13:17:55.70
IV.CAFE.HNE. ML:1.9 0.0004724753 0.2176 AML other m 2021-09-20T13:17:55.70
IV.CAFE.HNN. ML:1.8 0.00033844870000000006 0.3008 AML other m 2021-09-20T13:17:55.63
IV.CAFE.HHN. ML:1.8 0.00034717989999999996 0.2944 AML other m 2021-09-20T13:17:55.62
IV.VULT.HHE. ML:1.6 0.00012665000000000002 0.26 AML other m 2021-09-20T13:18:00.18
IV.VULT.HHN. ML:1.5 0.00011451917 0.2048 AML other m 2021-09-20T13:18:02.69
IV.CDRU.HNN. ML:1.3 0.000077708895 0.1664 AML other m 2021-09-20T13:17:59.37
IV.CDRU.HNE. ML:1.6 0.000136924565 0.1472 AML other m 2021-09-20T13:17:58.11
IV.VULT.HNE. ML:1.5 0.000103995375 2.272 AML other m 2021-09-20T13:17:58.68
IV.VULT.HNN. ML:1.6 0.00012657859999999998 0.1792 AML other m 2021-09-20T13:17:59.25
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
Waveforms Seismic signals in miniseed + resp format Download