Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 20-04-2021 and time 14:46:49 (UTC) in region 4 km W Muro Lucano (PZ)

A magnitude ML 1.3 earthquake occured in region: 4 km W Muro Lucano (PZ), on

  • 20-04-2021 14:46:49 (UTC)
  • 20-04-2021 16:46:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.7420, 15.4370 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
Muro Lucano PZ 4 5497 5497
Castelgrande PZ 5 943 6440
Bella PZ 9 5171 11611
Ricigliano SA 9 1144 12755
San Gregorio Magno SA 10 4286 17041
Pescopagano PZ 11 1910 18951
Balvano PZ 12 1830 20781
Laviano SA 12 1438 22219
Colliano SA 12 3638 25857
Santomenna SA 12 443 26300
San Fele PZ 12 3004 29304
Sant'Andrea di Conza AV 13 1539 30843
Romagnano al Monte SA 13 368 31211
Rapone PZ 13 990 32201
Castelnuovo di Conza SA 13 619 32820
Buccino SA 14 5047 37867
Valva SA 14 1643 39510
Ruvo del Monte PZ 15 1083 40593
Baragiano PZ 15 2671 43264
Palomonte SA 15 3985 47249
Conza della Campania AV 15 1373 48622
Salvitelle SA 17 560 49182
Vietri di Potenza PZ 17 2832 52014
Oliveto Citra SA 18 3802 55816
Calitri AV 18 4666 60482
Cairano AV 18 326 60808
Calabritto AV 19 2391 63199
Caposele AV 19 3483 66682
Senerchia AV 19 842 67524
Contursi Terme SA 19 3394 70918
Teora AV 20 1537 72455
Caggiano SA 20 2765 75220

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Potenza (67122 inhabitants)
41 Km E of Battipaglia (50786 inhabitants)
57 Km E of Avellino (54857 inhabitants)
57 Km E of Salerno (135261 inhabitants)
62 Km E of Cava de' Tirreni (53659 inhabitants)
70 Km SE of Benevento (60091 inhabitants)
70 Km SW of Cerignola (58396 inhabitants)
77 Km E of Scafati (50787 inhabitants)
81 Km S of Foggia (151991 inhabitants)
81 Km E of Castellammare di Stabia (66466 inhabitants)
90 Km SW of Andria (100440 inhabitants)
90 Km E of Torre del Greco (86275 inhabitants)
92 Km E of Portici (55274 inhabitants)
92 Km E of Ercolano (53709 inhabitants)
92 Km E of Acerra (59573 inhabitants)
95 Km W of Altamura (70396 inhabitants)
96 Km SW of Barletta (94814 inhabitants)
97 Km E of Afragola (65057 inhabitants)
98 Km E of Casoria (77642 inhabitants)
98 Km W of Matera (60436 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 1.3 2021-04-20
14:46:49		 40.7425 15.4367 10 2021-07-12
16:55:16		 Bollettino Sismico Italiano INGV 91700371
Reviewed
Rev100 		ML 1.3 2021-04-20
14:46:48		 40.7298 15.4633 10 2021-04-20
14:54:52		 Sala Sismica INGV-Roma 89296501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-20 14:46:49 ± 0.1
Latitude 40.7425 ± 0.0054
Longitude 15.4367 ± 0.0071
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91700371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 611
Semi-minor axis of confidence ellipse (meter) 555
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) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27160
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 91700371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-22 09:24:03

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 89296501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-20 14:54:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2021-04-20T14:48:44.10 3.0 undecidable manual Sn 3.6 0
IV.MNTV.EHZ. 2021-04-20T14:48:22.54 3.0 positive manual Pg 14.37 0
IV.VENL.HNZ. 2021-04-20T14:48:20.53 3.0 positive manual Pg 18.73 0
IV.NDIM.HNZ. 2021-04-20T14:48:19.84 3.0 negative manual Pg 15 0
IV.SENA.HHZ. 2021-04-20T14:48:07.83 3.0 undecidable manual Pg 9.85 0
AC.VLO.HHZ. 2021-04-20T14:48:05.03 3.0 undecidable manual Sn 1.02 0
IV.T0110.HHZ. 2021-04-20T14:47:49.63 3.0 undecidable manual Sg 3.11 0
IV.ESCV.HHZ. 2021-04-20T14:47:34.57 3.0 negative manual Pn -0.65 0
IV.RMP.HHZ. 2021-04-20T14:47:27.29 3.0 negative manual Pn 1.61 0
IT.GLNS.HNZ. 2021-04-20T14:47:26.63 3.0 undecidable manual S 0.16 0
OT.OT14.EHZ. 2021-04-20T14:47:19.43 3.0 undecidable manual S -0.14 0
IV.MSAG.HHZ. 2021-04-20T14:47:13.57 3.0 undecidable manual S 0.09 0
IV.SGRT.HHZ. 2021-04-20T14:47:12.77 3.0 undecidable manual S -2.33 0
OT.OT05.EHZ. 2021-04-20T14:47:01.21 3.0 positive manual P 1.33 0
IX.SRN3.HNE.02 2021-04-20T14:47:00.01 0.6 undecidable manual S 176 28.5492 50 0.61 41
IV.SNAL.HHZ. 2021-04-20T14:46:59.57 0.6 undecidable manual S 317 27.8499 109 0.34 45
IV.CDRU.HHZ. 2021-04-20T14:46:59.42 0.6 undecidable manual S 202 30.1476 50 -0.43 44
IV.SGO.HHE. 2021-04-20T14:46:57.63 0.6 undecidable manual S 208 22.9548 113 0 48
IX.SRN3.HNE.02 2021-04-20T14:46:55.04 0.3 undecidable manual P 176 28.5492 50 0.03 71
IV.CDRU.HHZ. 2021-04-20T14:46:54.92 0.3 undecidable manual P 202 30.1476 50 -0.34 67
IX.COL3.HHE.02 2021-04-20T14:46:54.30 0.6 undecidable manual S 235 10.878 131 0.28 47
IV.SNAL.HHZ. 2021-04-20T14:46:54.78 0.3 undecidable manual P 317 27.8499 109 -0.12 70
IV.MCRV.HHN. 2021-04-20T14:46:54.08 0.3 undecidable manual P 281 22.9548 113 0.09 71
IV.SGO.HHE. 2021-04-20T14:46:53.82 0.3 undecidable manual P 208 22.9548 113 -0.16 70
IX.SCL3.HNE.02 2021-04-20T14:46:53.79 0.6 undecidable manual S 130 8.1807 139 0.41 45
IV.MRLC.HHZ. 2021-04-20T14:46:52.28 0.6 undecidable manual S 71 4.6953 154 -0.42 46
IX.COL3.HHE.02 2021-04-20T14:46:51.96 0.3 undecidable manual P 235 10.878 131 0.06 73
IX.VDS3.HNN. 2021-04-20T14:46:51.94 0.6 undecidable manual S 256 0.7992 175 -0.4 46
IX.SCL3.HNE.02 2021-04-20T14:46:51.71 0.3 undecidable manual P 130 8.1807 139 0.18 72
IV.MRLC.HHZ. 2021-04-20T14:46:51.06 0.1 positive manual P 71 4.6953 154 -0.08 98
IX.CSG3.HNE.01 2021-04-20T14:46:51.76 0.3 undecidable manual P 15 8.6802 138 0.17 72
IX.VDS3.HNN. 2021-04-20T14:46:50.92 0.1 undecidable manual P 256 0.7992 175 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HHE. ML:1.4 0.0005265 0.38 AML other m 2021-04-20T14:46:52.36
IV.MRLC.HNE. ML:1.1 0.000245 0.36 AML other m 2021-04-20T14:46:52.37
IV.MRLC.HHN. ML:1.4 0.0004385 0.24 AML other m 2021-04-20T14:46:52.43
IV.MRLC.HNN. ML:1.1 0.00020600000000000002 0.24 AML other m 2021-04-20T14:46:52.43
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