Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 01-10-2021 and time 00:47:19 (Italy) in region 6 km N San Gregorio Magno (SA)

A magnitude ML 1.2 earthquake occured in region: 6 km N San Gregorio Magno (SA), on

  • 30-09-2021 22:47:19 (UTC)
  • 01-10-2021 00:47:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.7110, 15.3950 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
San Gregorio Magno SA 6 4286 4286
Ricigliano SA 9 1144 5430
Colliano SA 9 3638 9068
Muro Lucano PZ 9 5497 14565
Castelgrande PZ 9 943 15508
Buccino SA 9 5047 20555
Romagnano al Monte SA 10 368 20923
Palomonte SA 10 3985 24908
Valva SA 11 1643 26551
Laviano SA 11 1438 27989
Balvano PZ 12 1830 29819
Santomenna SA 13 443 30262
Bella PZ 13 5171 35433
Castelnuovo di Conza SA 14 619 36052
Oliveto Citra SA 14 3802 39854
Pescopagano PZ 14 1910 41764
Salvitelle SA 14 560 42324
Contursi Terme SA 15 3394 45718
Sant'Andrea di Conza AV 15 1539 47257
Vietri di Potenza PZ 16 2832 50089
Senerchia AV 16 842 50931
Calabritto AV 17 2391 53322
Auletta SA 17 2336 55658
Conza della Campania AV 17 1373 57031
San Fele PZ 17 3004 60035
Baragiano PZ 17 2671 62706
Rapone PZ 18 990 63696
Caggiano SA 18 2765 66461
Sicignano degli Alburni SA 18 3519 69980
Caposele AV 18 3483 73463
Pertosa SA 19 690 74153
Ruvo del Monte PZ 20 1083 75236
Teora AV 20 1537 76773
Petina SA 20 1159 77932

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Potenza (67122 inhabitants)
37 Km E of Battipaglia (50786 inhabitants)
54 Km E of Salerno (135261 inhabitants)
55 Km E of Avellino (54857 inhabitants)
58 Km E of Cava de' Tirreni (53659 inhabitants)
70 Km SE of Benevento (60091 inhabitants)
73 Km E of Scafati (50787 inhabitants)
75 Km SW of Cerignola (58396 inhabitants)
77 Km E of Castellammare di Stabia (66466 inhabitants)
85 Km S of Foggia (151991 inhabitants)
87 Km E of Torre del Greco (86275 inhabitants)
89 Km E of Portici (55274 inhabitants)
89 Km E of Ercolano (53709 inhabitants)
90 Km E of Acerra (59573 inhabitants)
94 Km E of Afragola (65057 inhabitants)
95 Km SW of Andria (100440 inhabitants)
95 Km E of Casoria (77642 inhabitants)
97 Km E of Napoli (974074 inhabitants)
98 Km E of Caserta (76326 inhabitants)
98 Km W of Altamura (70396 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
Reviewed
Rev100 		ML 1.2 2021-09-30
22:47:19		 40.7107 15.3953 8 2021-09-30
22:53:42		 Sala Sismica INGV-Roma 96079651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 22:47:19 ± 0.22
Latitude 40.7107 ± 0.0054
Longitude 15.3953 ± 0.0059
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96079651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 227
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 177
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.24731
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 96079651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 22:53:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.NSC3.EHZ.02 2021-09-30T22:47:29.85 0.1 undecidable manual S 303 27.4503 107 0.07 96
IV.CDRU.HHZ. 2021-09-30T22:47:28.92 0.3 undecidable manual S 197 25.6521 108 -0.26 69
IX.SNR3.EHZ.02 2021-09-30T22:47:27.15 0.3 undecidable manual S 279 17.2716 116 0.68 62
IV.MCRV.HHZ. 2021-09-30T22:47:27.34 0.1 undecidable manual S 293 20.6682 112 -0.21 94
IV.SGO.HHN. 2021-09-30T22:47:27.20 0.3 undecidable manual S 204 18.2706 115 0.43 68
IX.NSC3.EHZ.02 2021-09-30T22:47:25.27 0.3 undecidable manual P 303 27.4503 107 -0.29 69
IX.CLT3.EHE.02 2021-09-30T22:47:25.02 0.3 undecidable manual P 2 21.3675 111 0.61 63
IV.CDRU.HHZ. 2021-09-30T22:47:25.08 0.6 positive manual P 197 25.6521 108 -0.15 47
IX.SCL3.EHZ.02 2021-09-30T22:47:24.63 0.3 undecidable manual S 100 9.879 130 0.31 70
IV.MRLC.HHZ. 2021-09-30T22:47:24.57 0.3 undecidable manual S 57 9.3795 132 0.4 69
IV.MCRV.HHZ. 2021-09-30T22:47:24.39 0.3 undecidable manual P 293 20.6682 112 0.11 72
IV.SGO.HHN. 2021-09-30T22:47:23.56 0.3 undecidable manual P 204 18.2706 115 -0.27 70
IX.COL3.HHZ.02 2021-09-30T22:47:23.60 0.1 undecidable manual S 244 6.0939 144 0.2 97
IX.SNR3.EHZ.02 2021-09-30T22:47:23.24 0.3 undecidable manual P 279 17.2716 116 -0.41 68
IX.VDS3.HNE. 2021-09-30T22:47:22.52 0.1 undecidable manual S 38 4.2957 153 -0.56 89
IV.MRLC.HHZ. 2021-09-30T22:47:22.38 0.1 positive manual P 57 9.3795 132 0.05 99
IX.SCL3.EHZ.02 2021-09-30T22:47:22.44 0.1 positive manual P 100 9.879 130 0.02 100
IX.VDS3.HNE. 2021-09-30T22:47:21.28 0.1 undecidable manual P 38 4.2957 153 -0.42 93
IX.COL3.HHZ.02 2021-09-30T22:47:21.92 0.1 positive manual P 244 6.0939 144 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.COL3.HHE.02 ML:1.5 0.0005700000000000001 0.44 AML other m 2021-09-30T22:47:23.65
IV.MRLC.HHN. ML:1.2 0.000224 0.46 AML other m 2021-09-30T22:47:24.68
IX.COL3.HHN.02 ML:1.4 0.0005295000000000001 0.72 AML other m 2021-09-30T22:47:24.80
IX.SCL3.EHE.02 ML:1.6 0.0006414999999999999 0.1 AML other m 2021-09-30T22:47:25.38
IX.SCL3.EHN.02 ML:1.7 0.0006855 0.82 AML other m 2021-09-30T22:47:25.70
IV.MRLC.HHE. ML:1.1 0.000175 0.34 AML other m 2021-09-30T22:47:25.74
IV.MCRV.HHN. ML:1.3 0.000134 0.78 AML other m 2021-09-30T22:47:28.82
IV.CDRU.HHN. ML:0.6 0.00002585 0.32 AML other m 2021-09-30T22:47:29.26
IV.MCRV.HHE. ML:0.8 0.00004975 1.04 AML other m 2021-09-30T22:47:30.84
IV.CDRU.HHE. ML:0.5 0.00001965 0.42 AML other m 2021-09-30T22:47:30.86
IX.NSC3.EHN.02 ML:1.0 0.0000597 1.12 AML other m 2021-09-30T22:47:31.99
IX.NSC3.EHE.02 ML:1.0 0.00005695 0.3 AML other m 2021-09-30T22:47:31.43
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