Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 20-11-2022 and time 22:09:23 (Italy) in region 2 km E Polla (SA)

A magnitude ML 1.8 earthquake occured in region: 2 km E Polla (SA), on

  • 20-11-2022 21:09:23 (UTC)
  • 20-11-2022 22:09:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.5240, 15.5200 at 8 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
Polla SA 2 5279 5279
Sant'Angelo Le Fratte PZ 4 1429 6708
Caggiano SA 5 2765 9473
Savoia di Lucania PZ 6 1127 10600
Pertosa SA 6 690 11290
Sant'Arsenio SA 6 2815 14105
San Pietro al Tanagro SA 8 1695 15800
Atena Lucana SA 8 2336 18136
Vietri di Potenza PZ 9 2832 20968
Auletta SA 9 2336 23304
Salvitelle SA 9 560 23864
Satriano di Lucania PZ 10 2374 26238
Brienza PZ 11 4078 30316
San Rufo SA 11 1754 32070
Petina SA 13 1159 33229
Romagnano al Monte SA 14 368 33597
Sasso di Castalda PZ 14 835 34432
Balvano PZ 14 1830 36262
Sala Consilina SA 15 12664 48926
Tito PZ 15 7332 56258
Corleto Monforte SA 15 592 56850
Picerno PZ 16 5985 62835
Teggiano SA 16 7976 70811
Ricigliano SA 16 1144 71955
Sant'Angelo a Fasanella SA 17 635 72590
Buccino SA 18 5047 77637
San Gregorio Magno SA 18 4286 81923
Sicignano degli Alburni SA 19 3519 85442
Baragiano PZ 19 2671 88113
Ottati SA 19 618 88731
Sacco SA 20 492 89223

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Potenza (67122 inhabitants)
46 Km E of Battipaglia (50786 inhabitants)
66 Km E of Salerno (135261 inhabitants)
71 Km E of Cava de' Tirreni (53659 inhabitants)
75 Km SE of Avellino (54857 inhabitants)
87 Km E of Scafati (50787 inhabitants)
89 Km SW of Cerignola (58396 inhabitants)
90 Km E of Castellammare di Stabia (66466 inhabitants)
92 Km SE of Benevento (60091 inhabitants)
93 Km W of Matera (60436 inhabitants)
94 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
Bulletin
Rev1000 		ML 1.8 2022-11-20
21:09:23		 40.5243 15.52 8 2024-03-01
15:28:08		 Bollettino Sismico Italiano INGV 112410981
Reviewed
Rev100 		ML 1.6 2022-11-20
21:09:23		 40.5313 15.5182 6 2022-11-20
21:15:47		 Sala Sismica INGV-Roma 112040921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-11-20 21:09:23 ± 0.08
Latitude 40.5243 ± 0.0054
Longitude 15.5200 ± 0.0059
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 112410981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 567
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.06025
Epicentral distance of station farthest from the epicenter (degree) 0.45865
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 112410981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-06 08:19:04

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 112040921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-11-20 21:15:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SIRI.HHZ. 2022-11-20T21:09:39.58 0.3 undecidable manual S 142 48.0186 50 0.14 70
IX.COL3.HHZ.02 2022-11-20T21:09:33.15 0.6 undecidable manual S 319 24.0537 109 0.73 41
IV.BULG.HHN. 2022-11-20T21:09:33.56 0.3 undecidable manual P 194 50.9157 50 0.38 66
IX.PST3.HNZ.01 2022-11-20T21:09:32.51 0.6 undecidable manual S 280 23.6541 109 0.23 48
IV.SIRI.HHZ. 2022-11-20T21:09:32.74 0.3 undecidable manual P 142 48.0186 50 0.01 72
IV.MGR.HHZ. 2022-11-20T21:09:31.68 0.3 undecidable manual P 176 43.0236 50 -0.28 69
IV.MCRV.HHN. 2022-11-20T21:09:31.47 0.3 undecidable manual P 314 41.2254 50 -0.21 70
IT.SLC1.HGZ. 2022-11-20T21:09:30.50 0.6 undecidable manual S 156 15.6732 118 0.76 41
IX.SCL3.EHZ.02 2022-11-20T21:09:30.79 0.6 undecidable manual S 358 18.9699 114 0.04 50
IX.SNR3.EHN.02 2022-11-20T21:09:30.61 0.3 undecidable manual P 310 36.1416 50 -0.29 69
IV.CDRU.HHZ. 2022-11-20T21:09:30.82 0.3 undecidable manual S 258 18.5703 114 0.19 73
IV.MTSN.HNN. 2022-11-20T21:09:30.72 0.3 undecidable manual P 146 34.6431 50 0.05 73
IV.MCEL.HHZ. 2022-11-20T21:09:30.40 0.3 undecidable manual P 133 32.5452 104 0.11 73
IX.PGN3.HHZ.02 2022-11-20T21:09:29.36 0.3 undecidable manual P 77 23.9538 109 0.72 62
IV.CMPR.HNE. 2022-11-20T21:09:29.24 0.3 undecidable manual P 219 29.3484 106 -0.43 68
IV.MRLC.HHZ. 2022-11-20T21:09:29.04 0.3 undecidable manual P 354 25.8519 108 0.03 75
IX.STN3.EHZ. 2022-11-20T21:09:28.13 0.3 undecidable manual S 87 11.0778 127 -0.26 73
IX.PST3.HNZ.01 2022-11-20T21:09:28.79 0.3 undecidable manual P 280 23.6541 109 0.2 72
IX.SCL3.EHZ.02 2022-11-20T21:09:28.01 0.3 undecidable manual P 358 18.9699 114 0.29 72
IX.COL3.HHZ.02 2022-11-20T21:09:28.39 0.3 undecidable manual P 319 24.0537 109 -0.28 71
IV.CDRU.HHZ. 2022-11-20T21:09:27.42 0.1 positive manual P 258 18.5703 114 -0.22 97
IT.SLC1.HGZ. 2022-11-20T21:09:27.27 0.6 undecidable manual P 156 15.6732 118 0.14 49
IX.SRN3.HHZ.02 2022-11-20T21:09:27.17 0.6 undecidable manual S 231 6.6933 141 -0.12 51
IX.SRN3.HHZ.02 2022-11-20T21:09:25.55 0.1 positive manual P 231 6.6933 141 -0.17 100
IX.STN3.EHZ. 2022-11-20T21:09:25.36 0.3 undecidable manual P 87 11.0778 127 -0.99 57
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.SRN3.HNE.01 ML:1.9 0.001345 0.82 AML other m 2022-11-20T21:09:28.52
IX.SRN3.HHE.02 ML:1.9 0.0014449999999999999 0.82 AML other m 2022-11-20T21:09:28.52
IX.SRN3.HNN.01 ML:1.8 0.0012050000000000001 0.54 AML other m 2022-11-20T21:09:29.22
IX.SRN3.HHN.02 ML:1.8 0.0011749999999999998 0.52 AML other m 2022-11-20T21:09:29.23
IV.CDRU.HHN. ML:1.5 0.000283 0.48 AML other m 2022-11-20T21:09:31.13
IV.CDRU.HNN. ML:1.6 0.00030100000000000005 0.48 AML other m 2022-11-20T21:09:31.37
IV.CDRU.HHE. ML:1.7 0.0004515 0.14 AML other m 2022-11-20T21:09:31.54
IV.CDRU.HNE. ML:1.7 0.000423 0.14 AML other m 2022-11-20T21:09:31.48
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