Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 17-08-2020 and time 23:10:01 (Italy) in region 2 km W Sant'Angelo dei Lombardi (AV)

A magnitude ML 1.8 earthquake occured in region: 2 km W Sant'Angelo dei Lombardi (AV), on

  • 17-08-2020 21:10:01 (UTC)
  • 17-08-2020 23:10:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.9320, 15.1590 at 12 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Angelo dei Lombardi AV 2 4250 4250
Rocca San Felice AV 2 851 5101
Torella dei Lombardi AV 4 2144 7245
Guardia Lombardi AV 5 1718 8963
Lioni AV 7 6201 15164
Morra De Sanctis AV 7 1297 16461
Villamaina AV 7 995 17456
Nusco AV 8 4203 21659
Castelfranci AV 10 2041 23700
Frigento AV 10 3780 27480
Sturno AV 11 3080 30560
Gesualdo AV 11 3516 34076
Paternopoli AV 11 2384 36460
Carife AV 12 1408 37868
Teora AV 12 1537 39405
Cassano Irpino AV 13 982 40387
Castel Baronia AV 13 1129 41516
Bagnoli Irpino AV 13 3217 44733
Montemarano AV 14 2851 47584
Andretta AV 14 1927 49511
Vallata AV 14 2714 52225
Caposele AV 14 3483 55708
Trevico AV 14 993 56701
Castelvetere sul Calore AV 15 1615 58316
San Nicola Baronia AV 15 771 59087
Fontanarosa AV 15 3170 62257
Luogosano AV 15 1187 63444
San Sossio Baronia AV 16 1643 65087
Montella AV 16 7780 72867
Flumeri AV 16 2963 75830
San Mango sul Calore AV 16 1185 77015
Sant'Angelo all'Esca AV 16 801 77816
Vallesaccarda AV 17 1386 79202
Conza della Campania AV 17 1373 80575
Calabritto AV 17 2391 82966
Grottaminarda AV 18 8137 91103
Cairano AV 18 326 91429
Mirabella Eclano AV 19 7684 99113
Castelnuovo di Conza SA 19 619 99732
Lapio AV 19 1572 101304
Taurasi AV 19 2377 103681
Santomenna SA 19 443 104124

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Avellino (54857 inhabitants)
39 Km SE of Benevento (60091 inhabitants)
39 Km NE of Battipaglia (50786 inhabitants)
44 Km NE of Salerno (135261 inhabitants)
46 Km NE of Cava de' Tirreni (53659 inhabitants)
57 Km E of Scafati (50787 inhabitants)
63 Km E of Castellammare di Stabia (66466 inhabitants)
63 Km NW of Potenza (67122 inhabitants)
66 Km E of Acerra (59573 inhabitants)
67 Km SW of Foggia (151991 inhabitants)
69 Km E of Portici (55274 inhabitants)
69 Km E of Torre del Greco (86275 inhabitants)
70 Km E of Ercolano (53709 inhabitants)
71 Km E of Caserta (76326 inhabitants)
71 Km E of Afragola (65057 inhabitants)
73 Km SW of Cerignola (58396 inhabitants)
73 Km E of Casoria (77642 inhabitants)
77 Km E of Napoli (974074 inhabitants)
80 Km E of Aversa (53047 inhabitants)
80 Km E of Giugliano in Campania (122974 inhabitants)
81 Km E of Marano di Napoli (59874 inhabitants)
86 Km S of San Severo (53905 inhabitants)
90 Km E of Pozzuoli (81661 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 1.8 2020-08-17
21:10:01		 40.9323 15.159 13 2020-11-19
12:37:05		 Bollettino Sismico Italiano INGV 84052781
Reviewed
Rev100 		ML 1.8 2020-08-17
21:10:01		 40.9338 15.1637 13 2020-08-17
21:17:23		 Sala Sismica INGV-Roma 82098481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-17 21:10:01 ± 0.07
Latitude 40.9323 ± 0.0036
Longitude 15.1590 ± 0.0060
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84052781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 482
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
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) 0.01619
Epicentral distance of station farthest from the epicenter (degree) 0.34624
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 84052781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-23 09:28:01

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 82098481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-17 21:17:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VULT.HHZ. 2020-08-17T21:10:13.65 0.6 undecidable manual S 86 38.4282 93 -0.17 46
IX.CMP3.HNE.02 2020-08-17T21:10:12.19 0.3 undecidable manual S 192 31.8459 94 0.12 70
IX.COL3.HHE.02 2020-08-17T21:10:11.46 0.3 undecidable manual S 152 30.747 95 -0.33 67
IX.SNR3.HNE.02 2020-08-17T21:10:09.76 0.6 undecidable manual S 173 21.9669 99 0.3 45
IV.VULT.HHZ. 2020-08-17T21:10:08.54 0.1 undecidable manual P 86 38.4282 93 0.09 92
IX.SSB3.HNE.02 2020-08-17T21:10:08.23 0.6 undecidable manual S 20 17.2716 106 0.01 49
IX.RDM3.HHZ.02 2020-08-17T21:10:08.29 0.3 undecidable manual P 101 32.2455 94 0.79 57
IX.MNT3.HHZ.02 2020-08-17T21:10:08.26 0.6 undecidable manual S 230 16.5723 107 0.21 47
IX.AND3.HNN. 2020-08-17T21:10:07.91 0.6 undecidable manual S 91 14.5743 113 0.35 45
IX.LGS3.HNE. 2020-08-17T21:10:07.69 0.6 undecidable manual S 293 15.3735 111 -0.05 48
IV.MRLC.HHE. 2020-08-17T21:10:07.68 0.1 undecidable manual P 125 33.8439 94 -0.07 94
IX.CMP3.HNE.02 2020-08-17T21:10:07.37 0.3 undecidable manual P 192 31.8459 94 -0.06 71
IV.MCRV.HHZ. 2020-08-17T21:10:07.84 0.6 undecidable manual S 177 16.6722 107 -0.22 47
IX.NSC3.HHE.02 2020-08-17T21:10:07.06 0.6 undecidable manual S 198 9.9789 129 0.57 44
IX.COL3.HHE.02 2020-08-17T21:10:07.05 0.3 undecidable manual P 152 30.747 95 -0.22 69
IV.CAFE.HHZ. 2020-08-17T21:10:07.20 0.6 undecidable manual S 31 12.4764 120 0.17 48
IV.MRB1.HHZ. 2020-08-17T21:10:06.79 0.3 undecidable manual P 323 26.4513 96 0.18 70
IX.CLT3.HHE.02 2020-08-17T21:10:06.03 0.1 undecidable manual P 99 20.868 100 0.28 91
IV.SGTA.HNZ. 2020-08-17T21:10:06.96 0.3 undecidable manual P 37 28.3494 95 0.06 71
IX.SALI.HNE.01 2020-08-17T21:10:05.79 0.1 undecidable manual S 98 1.7982 170 0.42 92
IX.RSF3.HHZ.02 2020-08-17T21:10:05.03 0.1 undecidable manual S 22 3.7962 159 -0.49 90
IX.MNT3.HHZ.02 2020-08-17T21:10:05.08 0.1 positive manual P 230 16.5723 107 -0.04 97
IV.SNAL.HHZ. 2020-08-17T21:10:05.63 0.1 undecidable manual S 100 4.2957 156 0.07 99
IX.LGS3.HNE. 2020-08-17T21:10:05.40 0.1 undecidable manual P 293 15.3735 111 0.47 90
IX.SNR3.HNE.02 2020-08-17T21:10:05.79 0.1 undecidable manual P 173 21.9669 99 -0.14 95
IX.NSC3.HHE.02 2020-08-17T21:10:04.19 0.1 negative manual P 198 9.9789 129 -0.03 98
IX.SSB3.HNE.02 2020-08-17T21:10:04.98 0.1 positive manual P 20 17.2716 106 -0.23 93
IV.CAFE.HHZ. 2020-08-17T21:10:04.40 0.1 positive manual P 31 12.4764 120 -0.13 96
IX.AND3.HNN. 2020-08-17T21:10:04.67 0.1 undecidable manual P 91 14.5743 113 -0.15 96
IV.MCRV.HHZ. 2020-08-17T21:10:04.83 0.1 negative manual P 177 16.6722 107 -0.29 92
IX.SALI.HNE.01 2020-08-17T21:10:03.55 0.1 negative manual P 98 1.7982 170 -0.02 100
IX.RSF3.HHZ.02 2020-08-17T21:10:03.30 0.1 negative manual P 22 3.7962 159 -0.35 93
IV.SNAL.HHZ. 2020-08-17T21:10:03.56 0.1 negative manual P 100 4.2957 156 -0.12 98
IX.LIO3.HNE.02 2020-08-17T21:10:03.52 0.1 negative manual P 155 4.2957 156 -0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNAL.HHE. ML:1.9 0.0011349999999999997 0.3 AML other m 2020-08-17T21:10:05.84
IV.SNAL.HNN. ML:1.7 0.0007664999999999999 0.84 AML other m 2020-08-17T21:10:06.15
IV.SNAL.HHN. ML:1.7 0.000757 0.82 AML other m 2020-08-17T21:10:06.15
IV.CAFE.HNE. ML:1.6 0.0003745 0.58 AML other m 2020-08-17T21:10:07.61
IV.CAFE.HHE. ML:1.6 0.000345 0.6 AML other m 2020-08-17T21:10:07.32
IV.CAFE.HHN. ML:1.2 0.00017019705000000001 0.9856 AML other m 2020-08-17T21:10:07.91
IV.MCRV.HHN. ML:2.1 0.0010400000000000001 0.1 AML other m 2020-08-17T21:10:08.29
IV.MCRV.HHE. ML:1.9 0.0006865 1.04 AML other m 2020-08-17T21:10:08.92
IX.MNT3.HNN.01 ML:2.0 0.000841 0.48 AML other m 2020-08-17T21:10:08.68
IX.MNT3.HHN.02 ML:2.0 0.000878 0.48 AML other m 2020-08-17T21:10:08.44
IX.MNT3.HNE.01 ML:1.8 0.0005195000000000001 0.08 AML other m 2020-08-17T21:10:08.44
IX.MNT3.HHE.02 ML:1.9 0.000642 0.1 AML other m 2020-08-17T21:10:08.44
IV.CAFE.HNN. ML:1.4 0.00025550000000000003 0.56 AML other m 2020-08-17T21:10:09.64
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