Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 26-10-2021 and time 01:39:15 (Italy) in region 2 km W Balvano (PZ)

A magnitude ML 1.3 earthquake occured in region: 2 km W Balvano (PZ), on

  • 25-10-2021 23:39:15 (UTC)
  • 26-10-2021 01:39:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.6470, 15.4880 at 3 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
Balvano PZ 2 1830 1830
Ricigliano SA 3 1144 2974
Romagnano al Monte SA 5 368 3342
Vietri di Potenza PZ 5 2832 6174
Salvitelle SA 7 560 6734
San Gregorio Magno SA 8 4286 11020
Caggiano SA 9 2765 13785
Baragiano PZ 10 2671 16456
Savoia di Lucania PZ 10 1127 17583
Buccino SA 10 5047 22630
Auletta SA 11 2336 24966
Muro Lucano PZ 12 5497 30463
Pertosa SA 12 690 31153
Picerno PZ 13 5985 37138
Sant'Angelo Le Fratte PZ 13 1429 38567
Bella PZ 13 5171 43738
Polla SA 15 5279 49017
Petina SA 16 1159 50176
Castelgrande PZ 16 943 51119
Palomonte SA 17 3985 55104
Satriano di Lucania PZ 17 2374 57478
Tito PZ 18 7332 64810
Ruoti PZ 18 3579 68389
Sicignano degli Alburni SA 18 3519 71908
Colliano SA 19 3638 75546
Sant'Arsenio SA 19 2815 78361
San Fele PZ 20 3004 81365

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Potenza (67122 inhabitants)
43 Km E of Battipaglia (50786 inhabitants)
62 Km E of Salerno (135261 inhabitants)
66 Km E of Avellino (54857 inhabitants)
66 Km E of Cava de' Tirreni (53659 inhabitants)
77 Km SW of Cerignola (58396 inhabitants)
80 Km SE of Benevento (60091 inhabitants)
82 Km E of Scafati (50787 inhabitants)
85 Km E of Castellammare di Stabia (66466 inhabitants)
91 Km S of Foggia (151991 inhabitants)
92 Km W of Altamura (70396 inhabitants)
94 Km W of Matera (60436 inhabitants)
94 Km SW of Andria (100440 inhabitants)
96 Km E of Torre del Greco (86275 inhabitants)
98 Km E of Portici (55274 inhabitants)
98 Km E of Ercolano (53709 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 2021-10-25
23:39:15		 40.6467 15.4883 3 2022-03-30
13:04:37		 Bollettino Sismico Italiano INGV 101052861
Reviewed
Rev100 		ML 1.4 2021-10-25
23:39:15		 40.6518 15.5388 3 2021-10-25
23:44:16		 Sala Sismica INGV-Roma 96990341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 23:39:15 ± 0.21
Latitude 40.6467 ± 0.0045
Longitude 15.4883 ± 0.0083
Depth (km) 3 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 101052861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 656
Semi-minor axis of confidence ellipse (meter) 379
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.34984
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 101052861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-16 16:55:11

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96990341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 23:44:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-10-25T23:39:24.44 0.6 undecidable manual S 222 23.2545 98 0.97 38
IV.SNAL.HNE. 2021-10-25T23:39:22.54 0.3 undecidable manual P 323 38.8278 95 -0.57 65
IX.CLT3.EHN.02 2021-10-25T23:39:22.06 0.3 undecidable manual P 346 29.3484 96 0.85 59
IV.SGO.HHE. 2021-10-25T23:39:22.38 0.6 undecidable manual S 238 17.9709 100 0.74 42
IX.RDM3.HHZ.02 2021-10-25T23:39:21.26 0.6 undecidable manual P 9 25.752 97 0.76 41
IV.MCRV.HHZ. 2021-10-25T23:39:21.03 0.3 undecidable manual P 299 30.8469 96 -0.49 68
IX.SRN3.HHZ.02 2021-10-25T23:39:21.36 0.6 undecidable manual S 188 17.9709 100 -0.28 49
IX.COL3.HHE.02 2021-10-25T23:39:20.05 0.6 undecidable manual S 289 14.0748 103 -0.25 49
IV.MRLC.HHZ. 2021-10-25T23:39:20.09 0.6 undecidable manual S 0 12.1767 105 0.42 48
IX.SNR3.EHN.02 2021-10-25T23:39:20.80 0.3 undecidable manual P 292 26.751 97 0.09 75
IV.CDRU.HHZ. 2021-10-25T23:39:19.66 0.3 undecidable manual P 222 23.2545 98 -0.36 71
IX.VDS3.HNN.01 2021-10-25T23:39:19.80 0.6 undecidable manual S 334 11.6772 105 0.3 49
IV.SGO.HHE. 2021-10-25T23:39:18.93 0.3 undecidable manual P 238 17.9709 100 -0.04 77
IX.SRN3.HHZ.02 2021-10-25T23:39:18.82 0.1 undecidable manual P 188 17.9709 100 -0.14 100
IX.BEL3.HNE.01 2021-10-25T23:39:18.63 0.3 undecidable manual P 59 14.6742 102 0.33 73
IX.VDP3.HNE.01 2021-10-25T23:39:18.75 0.6 undecidable manual S 123 8.3805 111 0.32 49
IX.COL3.HHE.02 2021-10-25T23:39:18.15 0.3 undecidable manual P 289 14.0748 103 -0.04 77
IX.CGG3.HNN.01 2021-10-25T23:39:17.92 0.3 undecidable manual P 166 11.9769 105 0.14 76
IX.SCL3.EHZ.02 2021-10-25T23:39:17.48 0.6 undecidable manual S 20 5.6943 119 -0.1 52
IX.VDS3.HNN.01 2021-10-25T23:39:17.68 0.3 undecidable manual P 334 11.6772 105 -0.05 77
IV.MRLC.HHZ. 2021-10-25T23:39:17.52 0.1 undecidable manual P 0 12.1767 105 -0.31 98
IX.SCL3.EHZ.02 2021-10-25T23:39:16.27 0.1 positive manual P 20 5.6943 119 -0.34 98
IX.VDP3.HNE.01 2021-10-25T23:39:16.76 0.3 undecidable manual P 123 8.3805 111 -0.35 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HHE. ML:1.6 0.0006439999999999999 0.52 AML other m 2021-10-25T23:39:20.36
IV.MRLC.HNE. ML:1.3 0.0003135 0.52 AML other m 2021-10-25T23:39:20.36
IV.MRLC.HHN. ML:1.6 0.0006335 0.28 AML other m 2021-10-25T23:39:20.25
IV.MRLC.HNN. ML:1.3 0.00029600000000000004 0.3 AML other m 2021-10-25T23:39:20.25
IX.SRN3.HHN.02 ML:1.5 0.0003185 0.2 AML other m 2021-10-25T23:39:23.73
IX.SRN3.HHE.02 ML:1.6 0.00039600000000000003 0.4 AML other m 2021-10-25T23:39:23.83
IV.CDRU.HHE. ML:0.8 0.00004445 0.26 AML other m 2021-10-25T23:39:24.96
IV.CDRU.HHN. ML:1.0 0.00006465 0.34 AML other m 2021-10-25T23:39:26.08
IV.MCRV.HHE. ML:1.0 0.00004865 1.58 AML other m 2021-10-25T23:39:28.17
IV.MCRV.HHN. ML:1.3 0.00008935 0.86 AML other m 2021-10-25T23:39:31.19
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