Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 17-10-2021 and time 05:35:08 (UTC) in region 4 km E Torraca (SA)

A magnitude ML 2.2 earthquake occured in region: 4 km E Torraca (SA), on

  • 17-10-2021 05:35:08 (UTC)
  • 17-10-2021 07:35:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.1080, 15.6890 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
Torraca SA 5 1263 1263
Sapri SA 6 6770 8033
Lagonegro PZ 7 5584 13617
Rivello PZ 7 2767 16384
Casaletto Spartano SA 8 1420 17804
Tortorella SA 8 523 18327
Vibonati SA 9 3293 21620
Nemoli PZ 11 1495 23115
Ispani SA 11 1026 24141
Trecchina PZ 12 2316 26457
Morigerati SA 12 665 27122
Casalbuono SA 12 1194 28316
Santa Marina SA 13 3243 31559
Maratea PZ 13 5139 36698
Caselle in Pittari SA 14 1956 38654
Lauria PZ 14 12919 51573
Torre Orsaia SA 19 2118 53691
Montesano sulla Marcellana SA 19 6704 60395
Buonabitacolo SA 19 2549 62944
Sanza SA 19 2608 65552

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km S of Potenza (67122 inhabitants)
82 Km SE of Battipaglia (50786 inhabitants)
99 Km SW 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 2.2 2021-10-17
05:35:08		 40.1077 15.6893 10 2022-03-30
13:04:12		 Bollettino Sismico Italiano INGV 96795451
Reviewed
Rev100 		ML 2.2 2021-10-17
05:35:08		 40.1012 15.6935 10 2021-10-17
05:42:08		 Sala Sismica INGV-Roma 96673251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-17 05:35:08 ± 0.09
Latitude 40.1077 ± 0.0045
Longitude 15.6893 ± 0.0059
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 96795451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 519
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 356
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.95688
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 96795451
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-21 16:48:13

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 96673251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-17 05:42:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.LRNO.HNZ. 2021-10-17T05:35:38.60 3.0 positive manual Pn 0.08 0
IV.SPS2.HHZ. 2021-10-17T05:35:28.08 0.6 undecidable manual P 148 106.2159 50 1.48 24
IV.CELI.HHZ. 2021-10-17T05:35:27.05 0.3 undecidable manual P 138 104.9172 50 0.65 54
IV.CDRU.HHZ. 2021-10-17T05:35:25.70 0.6 undecidable manual S 323 53.4021 50 0.04 47
IX.SRN3.HHZ.02 2021-10-17T05:35:24.58 0.6 undecidable manual S 335 46.3203 50 0.82 38
IV.CMPR.HHZ. 2021-10-17T05:35:22.34 0.6 undecidable manual S 306 40.2264 50 0.21 46
IV.MMN.HHZ. 2021-10-17T05:35:21.13 0.6 undecidable manual S 133 35.1426 50 0.36 45
IV.CET2.HHZ. 2021-10-17T05:35:20.68 0.3 undecidable manual P 161 68.0763 50 -0.05 68
IX.TEGI.HNE.01 2021-10-17T05:35:20.92 0.6 undecidable manual S 337 32.8449 50 0.75 40
IV.SCHR.EHZ. 2021-10-17T05:35:19.92 0.6 undecidable manual S 73 34.3434 50 -0.64 42
IV.PTRP.HHN. 2021-10-17T05:35:19.14 0.3 undecidable manual P 34 55.5999 50 0.33 66
IX.VGG3.HNZ.01 2021-10-17T05:35:19.84 0.6 undecidable manual S 35 31.0467 50 0.16 48
IV.BULG.HHZ. 2021-10-17T05:35:18.57 0.6 undecidable manual S 263 26.6511 110 0.08 49
IX.PGN3.HHZ.02 2021-10-17T05:35:18.24 0.3 undecidable manual P 10 52.3032 50 -0.06 70
IV.CDRU.HHZ. 2021-10-17T05:35:18.08 0.1 undecidable manual P 323 53.4021 50 -0.39 87
IV.MCEL.HHZ. 2021-10-17T05:35:18.18 0.6 undecidable manual S 22 25.9518 111 -0.07 49
IV.SGO.HHZ. 2021-10-17T05:35:18.94 0.3 undecidable manual P 327 59.6958 50 -0.5 63
IX.SRN3.HHZ.02 2021-10-17T05:35:17.13 0.1 undecidable manual P 335 46.3203 50 -0.24 91
IV.GRIS.EHZ. 2021-10-17T05:35:16.53 0.3 undecidable manual P 161 43.0236 50 -0.34 67
IV.CMPR.HHZ. 2021-10-17T05:35:16.20 0.1 undecidable manual P 306 40.2264 50 -0.23 92
IV.MTSN.HHZ. 2021-10-17T05:35:16.18 0.6 undecidable manual S 17 18.3705 118 0.32 47
IV.SIRI.HHZ. 2021-10-17T05:35:15.66 0.6 undecidable manual S 61 17.1717 119 0.16 49
IV.MMN.HHZ. 2021-10-17T05:35:15.50 0.3 undecidable manual P 133 35.1426 50 -0.14 71
IX.MRN3.HNE. 2021-10-17T05:35:15.94 0.3 undecidable manual P 6 35.4423 50 0.24 69
IV.SCHR.EHZ. 2021-10-17T05:35:15.02 0.1 positive manual P 73 34.3434 50 -0.5 88
IX.TEGI.HNE.01 2021-10-17T05:35:15.28 0.3 undecidable manual P 337 32.8449 50 -0.02 73
IV.BULG.HHZ. 2021-10-17T05:35:14.30 0.1 positive manual P 263 26.6511 110 -0.03 98
IX.VGG3.HNZ.01 2021-10-17T05:35:14.93 0.3 undecidable manual P 35 31.0467 50 -0.09 72
IV.MCEL.HHZ. 2021-10-17T05:35:14.00 0.1 negative manual P 22 25.9518 111 -0.19 95
IV.MGR.HHZ. 2021-10-17T05:35:13.91 0.3 undecidable manual S 286 11.9769 129 -0.09 75
IV.MTSN.HHZ. 2021-10-17T05:35:12.79 0.1 undecidable manual P 17 18.3705 118 -0.02 100
IV.SIRI.HHZ. 2021-10-17T05:35:12.74 0.1 undecidable manual P 61 17.1717 119 0.14 98
IV.MGR.HHZ. 2021-10-17T05:35:11.88 0.1 undecidable manual P 286 11.9769 129 0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SIRI.HNN. ML:2.5 0.0025800000000000003 0.22 AML other m 2021-10-17T05:35:17.60
IV.SIRI.HHN. ML:2.5 0.00269 0.22 AML other m 2021-10-17T05:35:17.60
IV.MTSN.HNE. ML:2.3 0.001675 0.62 AML other m 2021-10-17T05:35:18.09
IV.MTSN.HHE. ML:2.3 0.001675 0.62 AML other m 2021-10-17T05:35:18.09
IV.SIRI.HNE. ML:2.4 0.00226 0.22 AML other m 2021-10-17T05:35:18.47
IV.SIRI.HHE. ML:2.2 0.0012850000000000001 0.2 AML other m 2021-10-17T05:35:18.64
IV.BULG.HHE. ML:2.2 0.000958 1.46 AML other m 2021-10-17T05:35:19.93
IV.BULG.HNE. ML:2.2 0.000889 1.44 AML other m 2021-10-17T05:35:19.93
IV.MTSN.HNN. ML:2.2 0.001305 0.7 AML other m 2021-10-17T05:35:19.28
IV.MTSN.HHN. ML:2.2 0.001375 0.68 AML other m 2021-10-17T05:35:19.29
IV.BULG.HNN. ML:2.5 0.001795 0.6 AML other m 2021-10-17T05:35:19.45
IV.BULG.HHN. ML:2.5 0.001875 0.6 AML other m 2021-10-17T05:35:19.45
IV.MCEL.HNN. ML:2.5 0.0019 0.7 AML other m 2021-10-17T05:35:19.54
IV.MCEL.HNE. ML:2.6 0.002045 0.82 AML other m 2021-10-17T05:35:20.52
IV.SCHR.EHE. ML:2.2 0.0006039999999999999 1.78 AML other m 2021-10-17T05:35:21.98
IV.MCEL.HHN. ML:2.0 0.000621 0.5 AML other m 2021-10-17T05:35:21.70
IV.MCEL.HHE. ML:2.1 0.0007749999999999999 0.28 AML other m 2021-10-17T05:35:21.70
IV.SCHR.EHN. ML:2.1 0.0005895 0.18 AML other m 2021-10-17T05:35:21.80
IV.CMPR.HHN. ML:2.1 0.000443 0.26 AML other m 2021-10-17T05:35:23.18
IV.CMPR.HHE. ML:2.1 0.0004555 0.24 AML other m 2021-10-17T05:35:23.21
IV.GRIS.EHN. ML:1.9 0.00027649999999999994 0.46 AML other m 2021-10-17T05:35:23.72
IV.MMN.HHN. ML:2.2 0.000722 1.52 AML other m 2021-10-17T05:35:24.13
IV.GRIS.EHE. ML:1.9 0.000266 1.3 AML other m 2021-10-17T05:35:24.65
IV.MMN.HHE. ML:2.1 0.000484 0.5 AML other m 2021-10-17T05:35:24.98
IV.CDRU.HHE. ML:1.8 0.00014050000000000003 0.7 AML other m 2021-10-17T05:35:27.25
IV.CDRU.HNE. ML:2.1 0.000323 0.3 AML other m 2021-10-17T05:35:27.50
IX.SRN3.HHN.02 ML:2.5 0.0008715000000000001 0.4 AML other m 2021-10-17T05:35:28.69
IX.SRN3.HHE.02 ML:2.3 0.0005935000000000001 0.34 AML other m 2021-10-17T05:35:29.59
IV.CDRU.HHN. ML:1.8 0.00015099999999999998 0.34 AML other m 2021-10-17T05:35:33.12
IV.CDRU.HNN. ML:1.8 0.000154 0.34 AML other m 2021-10-17T05:35:33.12
IV.CELI.HHE. ML:1.6 0.00003435 1.56 AML other m 2021-10-17T05:35:43.89
IV.SPS2.HHE. ML:1.6 0.00004185 0.7 AML other m 2021-10-17T05:35:44.56
IV.SPS2.HHN. ML:1.4 0.0000272 1.74 AML other m 2021-10-17T05:35:45.89
IV.CELI.HHN. ML:1.4 0.000024599999999999998 1.5 AML other m 2021-10-17T05:35:50.14
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
Waveforms Seismic signals in miniseed + resp format Download