Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 20-08-2019 and time 11:47:52 (Italy) in region 7 km N Viggiano (PZ)

A magnitude ML 1.6 earthquake occured in region: 7 km N Viggiano (PZ), on

  • 20-08-2019 09:47:52 (UTC)
  • 20-08-2019 11:47:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.4030, 15.9150 at 18 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
Viggiano PZ 7 3329 3329
Marsicovetere PZ 8 5546 8875
Laurenzana PZ 8 1797 10672
Calvello PZ 10 1948 12620
Corleto Perticara PZ 11 2511 15131
Anzi PZ 13 1696 16827
Montemurro PZ 13 1235 18062
Grumento Nova PZ 13 1700 19762
Tramutola PZ 14 3089 22851
Abriola PZ 15 1531 24382
Marsico Nuovo PZ 15 4098 28480
Paterno PZ 16 3368 31848
Spinoso PZ 16 1462 33310
Guardia Perticara PZ 16 552 33862
Armento PZ 17 631 34493
Sarconi PZ 17 1404 35897
Pietrapertosa PZ 18 1032 36929
Moliterno PZ 18 4062 40991
Castelmezzano PZ 18 800 41791
Gorgoglione MT 19 989 42780

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SE of Potenza (67122 inhabitants)
65 Km W of Matera (60436 inhabitants)
72 Km SW of Altamura (70396 inhabitants)
82 Km E of Battipaglia (50786 inhabitants)
96 Km S of Cerignola (58396 inhabitants)
97 Km SW of Andria (100440 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 1.6 2019-08-20
09:47:52		 40.4027 15.9147 18 2019-11-13
14:31:04		 Bollettino Sismico Italiano INGV 72947381
Reviewed
Rev100 		ML 1.6 2019-08-20
09:47:53		 40.4018 15.9137 16 2019-08-20
10:02:21		 Sala Sismica INGV-Roma 71646041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-20 09:47:52 ± 0.07
Latitude 40.4027 ± 0.0027
Longitude 15.9147 ± 0.0047
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72947381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 418
Semi-minor axis of confidence ellipse (meter) 79
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 303
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.72665
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 72947381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-01 09:13:52

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 71646041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-20 10:02:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MIGL.HHZ. 2019-08-20T09:48:08.76 0.6 undecidable manual S 63 49.7169 101 0.06 48
IV.ACER.HHZ. 2019-08-20T09:48:07.05 0.6 undecidable manual S 3 42.7239 103 0.18 48
MN.CUC.HHZ. 2019-08-20T09:48:07.92 0.3 undecidable manual S 191 46.1205 102 0.16 72
IV.MGR.HHZ. 2019-08-20T09:48:06.97 0.6 undecidable manual S 226 42.4242 103 0.17 48
IV.AMUR.HHN. 2019-08-20T09:48:06.86 0.6 undecidable manual P 46 80.6637 96 0.16 45
IV.MRVN.HHZ. 2019-08-20T09:48:05.93 0.6 undecidable manual P 18 76.7676 96 -0.18 45
YZ.POLL1.HHE.00 2019-08-20T09:48:05.33 0.3 undecidable manual P 138 70.1742 97 0.22 68
IV.SALB.HHE. 2019-08-20T09:48:04.57 0.6 undecidable manual P 148 68.7756 97 -0.32 45
IV.BULG.HHZ. 2019-08-20T09:48:03.55 0.6 undecidable manual P 232 57.9975 99 0.31 46
IX.STN3.HHZ.02 2019-08-20T09:48:02.59 0.6 undecidable manual S 303 26.3514 115 -0.13 50
IV.SIRI.HHZ. 2019-08-20T09:48:02.54 0.3 undecidable manual S 189 24.753 116 0.19 74
IV.CMPR.HHZ. 2019-08-20T09:48:02.24 0.3 undecidable manual P 260 52.503 100 -0.17 71
IV.SLCN.HHZ. 2019-08-20T09:48:02.26 0.3 undecidable manual S 267 23.8539 118 0.13 75
MN.CUC.HHZ. 2019-08-20T09:48:01.36 0.3 undecidable manual P 191 46.1205 102 -0.08 73
IX.PGN3.HHZ.02 2019-08-20T09:48:01.95 0.3 undecidable manual S 332 21.2676 121 0.42 71
IV.MIGL.HHZ. 2019-08-20T09:48:01.83 0.3 undecidable manual P 63 49.7169 101 -0.15 72
IV.ACER.HHZ. 2019-08-20T09:48:01.15 0.3 undecidable manual P 3 42.7239 103 0.23 71
IV.MGR.HHZ. 2019-08-20T09:48:00.90 0.3 undecidable manual P 226 42.4242 103 0.02 75
IV.MCEL.HHZ. 2019-08-20T09:47:59.48 0.3 undecidable manual S 228 12.876 138 -0.31 74
IV.SLCN.HHZ. 2019-08-20T09:47:58.08 0.3 undecidable manual P 267 23.8539 118 -0.11 76
IX.STN3.HHZ.02 2019-08-20T09:47:58.59 0.6 undecidable manual P 303 26.3514 115 0.06 51
IX.VGG3.HNZ.01 2019-08-20T09:47:58.91 0.3 undecidable manual S 189 7.4814 154 -0.08 79
IV.PZUN.HNZ. 2019-08-20T09:47:58.68 0.6 undecidable manual P 341 28.4493 112 -0.15 50
IV.SIRI.HHZ. 2019-08-20T09:47:58.17 0.1 undecidable manual P 189 24.753 116 -0.14 100
IV.PTRP.HHZ. 2019-08-20T09:47:57.24 0.3 undecidable manual P 43 18.0708 127 -0.19 75
IX.PGN3.HHZ.02 2019-08-20T09:47:57.61 0.3 undecidable manual P 332 21.2676 121 -0.23 74
IV.MCEL.HHZ. 2019-08-20T09:47:56.56 0.3 undecidable manual P 228 12.876 138 -0.28 74
IX.VGG3.HNZ.01 2019-08-20T09:47:56.84 0.6 undecidable manual P 189 7.4814 154 0.47 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCEL.HHE. ML:1.8 0.00048089855 0.2048 AML other m 2019-08-20T09:47:59.86
IV.MCEL.HNE. ML:1.8 0.00044852710000000003 0.1856 AML other m 2019-08-20T09:47:59.87
IV.MCEL.HNN. ML:1.5 0.0002607835 0.1024 AML other m 2019-08-20T09:48:00.38
IV.MCEL.HHN. ML:1.6 0.00029189835 0.1024 AML other m 2019-08-20T09:48:00.38
IV.PTRP.HHE. ML:1.5 0.00021108895 0.2816 AML other m 2019-08-20T09:48:02.60
IV.PTRP.HHN. ML:1.7 0.00031577549999999997 0.5184 AML other m 2019-08-20T09:48:03.34
IV.SIRI.HHE. ML:1.7 0.00026286765 0.2368 AML other m 2019-08-20T09:48:03.38
IV.SIRI.HNE. ML:1.7 0.0002438091 0.2176 AML other m 2019-08-20T09:48:03.49
IV.SLCN.HNE. ML:1.9 0.00036766105 0.4096 AML other m 2019-08-20T09:48:03.24
IV.SLCN.HHE. ML:1.8 0.00036002745 0.4224 AML other m 2019-08-20T09:48:03.45
IV.SLCN.HHN. ML:1.6 0.0002039464 1.5584 AML other m 2019-08-20T09:48:03.01
IV.SLCN.HNN. ML:1.6 0.00021621285000000001 1.5968 AML other m 2019-08-20T09:48:03.03
IV.SIRI.HHN. ML:1.6 0.0001824989 0.2176 AML other m 2019-08-20T09:48:05.64
IV.SIRI.HNN. ML:1.5 0.0001684117 0.1984 AML other m 2019-08-20T09:48:05.75
IV.ACER.HHE. ML:1.8 0.00017058614499999999 0.2624 AML other m 2019-08-20T09:48:08.32
IV.ACER.HHN. ML:1.8 0.0001792803 0.1984 AML other m 2019-08-20T09:48:08.35
IV.MGR.HHE. ML:1.1 0.00003702688 1.744 AML other m 2019-08-20T09:48:08.01
IV.ACER.HNN. ML:1.7 0.00015856701000000002 0.384 AML other m 2019-08-20T09:48:09.07
IV.ACER.HNE. ML:1.8 0.00019241405 0.5184 AML other m 2019-08-20T09:48:09.27
MN.CUC.HHN. ML:1.0 0.0000268335 0.1792 AML other m 2019-08-20T09:48:10.20
MN.CUC.HHE. ML:1.1 0.00003498949 0.2368 AML other m 2019-08-20T09:48:10.39
IV.CMPR.HHN. ML:1.0 0.000024209635000000002 0.3776 AML other m 2019-08-20T09:48:10.41
IV.MGR.HHN. ML:1.2 0.000042553549999999995 1.6992 AML other m 2019-08-20T09:48:11.00
IV.CMPR.HHE. ML:0.9 0.000019847674999999998 0.3392 AML other m 2019-08-20T09:48:11.66
IV.MIGL.HHE. ML:1.6 0.000104999065 0.256 AML other m 2019-08-20T09:48:11.97
IV.MGR.HNN. ML:2.3 0.00058646865 0.6976 AML other m 2019-08-20T09:48:13.16
MN.CUC.HNE. ML:1.4 0.00006295874 0.416 AML other m 2019-08-20T09:48:16.93
MN.CUC.HNN. ML:1.4 0.00006903280500000001 1.2 AML other m 2019-08-20T09:48:18.88
IV.MIGL.HHN. ML:1.6 0.00009910022 1.3984 AML other m 2019-08-20T09:48:18.99
IV.MGR.HNE. ML:2.3 0.00054995355 0.2624 AML other m 2019-08-20T09:48:23.64
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