Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 22-04-2023 and time 02:53:13 (Italy) in region 3 km S Colliano (SA)

A magnitude ML 0.6 earthquake occured in region: 3 km S Colliano (SA), on

  • 22-04-2023 00:53:13 (UTC)
  • 22-04-2023 02:53:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.7020, 15.3020 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
Colliano SA 3 3638 3638
Palomonte SA 5 3985 7623
Valva SA 5 1643 9266
Oliveto Citra SA 6 3802 13068
Contursi Terme SA 8 3394 16462
Senerchia AV 9 842 17304
Laviano SA 9 1438 18742
Buccino SA 10 5047 23789
San Gregorio Magno SA 10 4286 28075
Calabritto AV 11 2391 30466
Santomenna SA 12 443 30909
Castelnuovo di Conza SA 13 619 31528
Romagnano al Monte SA 14 368 31896
Caposele AV 14 3483 35379
Castelgrande PZ 15 943 36322
Sicignano degli Alburni SA 16 3519 39841
Ricigliano SA 16 1144 40985
Muro Lucano PZ 16 5497 46482
Serre SA 16 3995 50477
Campagna SA 17 16703 67180
Sant'Andrea di Conza AV 17 1539 68719
Postiglione SA 17 2151 70870
Pescopagano PZ 17 1910 72780
Teora AV 17 1537 74317
Conza della Campania AV 18 1373 75690
Salvitelle SA 18 560 76250
Balvano PZ 19 1830 78080
Auletta SA 19 2336 80416
Petina SA 20 1159 81575

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Battipaglia (50786 inhabitants)
43 Km W of Potenza (67122 inhabitants)
46 Km E of Salerno (135261 inhabitants)
49 Km SE of Avellino (54857 inhabitants)
50 Km E of Cava de' Tirreni (53659 inhabitants)
65 Km SE of Benevento (60091 inhabitants)
66 Km E of Scafati (50787 inhabitants)
69 Km E of Castellammare di Stabia (66466 inhabitants)
79 Km E of Torre del Greco (86275 inhabitants)
81 Km SW of Cerignola (58396 inhabitants)
81 Km E of Portici (55274 inhabitants)
81 Km E of Ercolano (53709 inhabitants)
83 Km E of Acerra (59573 inhabitants)
87 Km E of Afragola (65057 inhabitants)
87 Km S of Foggia (151991 inhabitants)
88 Km E of Casoria (77642 inhabitants)
90 Km E of Napoli (974074 inhabitants)
91 Km E of Caserta (76326 inhabitants)
96 Km E of Giugliano in Campania (122974 inhabitants)
96 Km E of Marano di Napoli (59874 inhabitants)
97 Km E of Aversa (53047 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 0.6 2023-04-22
00:53:13		 40.7025 15.3017 3 2024-03-01
17:18:05		 Bollettino Sismico Italiano INGV 116771421
Reviewed
Rev100 		ML 0.7 2023-04-22
00:53:13		 40.708 15.3105 6 2023-04-22
01:07:59		 Sala Sismica INGV-Roma 116590211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-22 00:53:13 ± 0.15
Latitude 40.7025 ± 0.0045
Longitude 15.3017 ± 0.0059
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116771421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 569
Semi-minor axis of confidence ellipse (meter) 123
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
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) 85
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) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.24641
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 116771421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-26 14:09:16

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 116590211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-22 01:07:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.SRN3.HNE.02 2023-04-22T00:53:23.96 0.3 undecidable manual S 151 27.3504 97 0.4 69
IV.SNAL.HHZ. 2023-04-22T00:53:23.89 0.6 undecidable manual S 343 25.9518 97 0.83 40
IV.CDRU.HHZ. 2023-04-22T00:53:22.44 0.3 undecidable manual S 179 23.6541 98 0.18 73
IX.NSC3.HNZ.02 2023-04-22T00:53:21.78 0.3 undecidable manual S 317 21.9669 98 0.07 75
IX.CMP3.EHZ.02 2023-04-22T00:53:21.26 0.6 undecidable manual S 253 19.4694 100 0.42 46
IV.MRLC.HHZ. 2023-04-22T00:53:20.14 0.3 undecidable manual S 69 16.872 101 0.2 73
IV.SGO.HNZ. 2023-04-22T00:53:20.06 0.3 undecidable manual S 178 15.7731 102 0.48 69
IX.LIO3.HHZ.02 2023-04-22T00:53:19.19 0.1 undecidable manual P 335 23.8539 98 0.38 93
IV.MCRV.HHZ. 2023-04-22T00:53:19.26 0.3 undecidable manual S 308 14.2746 103 0.18 74
IX.SRN3.HNE.02 2023-04-22T00:53:19.71 0.3 undecidable manual P 151 27.3504 97 0.19 72
IV.SNAL.HHZ. 2023-04-22T00:53:18.82 0.3 undecidable manual P 343 25.9518 97 -0.41 69
IV.CDRU.HHZ. 2023-04-22T00:53:18.08 0.3 undecidable manual P 179 23.6541 98 -0.69 63
IX.SNR3.EHZ.02 2023-04-22T00:53:18.19 0.3 undecidable manual S 292 9.879 108 0.59 67
IX.VDS3.HNZ.01 2023-04-22T00:53:18.26 0.3 undecidable manual S 68 11.3775 106 0.17 75
IX.NSC3.HNZ.02 2023-04-22T00:53:18.09 0.3 undecidable manual P 317 21.9669 98 -0.35 70
IX.CMP3.EHZ.02 2023-04-22T00:53:17.10 0.3 undecidable manual P 253 19.4694 100 -0.84 60
IV.MRLC.HHZ. 2023-04-22T00:53:17.33 0.3 undecidable manual P 69 16.872 101 -0.1 75
IV.SGO.HNZ. 2023-04-22T00:53:17.25 0.3 undecidable manual P 178 15.7731 102 0.03 76
IV.MCRV.HHZ. 2023-04-22T00:53:16.31 0.3 undecidable manual P 308 14.2746 103 -0.62 66
IX.VDS3.HNZ.01 2023-04-22T00:53:16.26 0.3 undecidable manual P 68 11.3775 106 -0.1 76
IX.COL3.HHZ.02 2023-04-22T00:53:15.36 0.3 undecidable manual S 125 2.997 138 -0.16 76
IX.SNR3.EHZ.02 2023-04-22T00:53:15.92 0.1 undecidable manual P 292 9.879 108 -0.16 100
IX.COL3.HHZ.02 2023-04-22T00:53:14.54 0.1 undecidable manual P 125 2.997 138 -0.34 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IX.COL3.HNN.01 ML:1.9 0.0014750000000000002 0.26 AML other m 2023-04-22T00:53:15.66
IX.COL3.HHE.02 ML:2.2 0.0028 0.14 AML other m 2023-04-22T00:53:15.84
IX.COL3.HNE.01 ML:2.2 0.003075 1.56 AML other m 2023-04-22T00:53:16.13
IX.COL3.HHN.02 ML:2.0 0.0017945530000000002 0.112 AML other m 2023-04-22T00:53:15.74
IX.SNR3.EHN.02 ML:0.9 0.0001571592 0.304 AML other m 2023-04-22T00:53:21.10
IV.MCRV.HHN. ML:0.7 0.0000619 0.2 AML other m 2023-04-22T00:53:21.40
IX.SNR3.EHE.02 ML:0.7 0.00008858953499999999 0.192 AML other m 2023-04-22T00:53:19.45
IV.MCRV.HHE. ML:0.6 0.000045799999999999995 0.42 AML other m 2023-04-22T00:53:23.26
IV.CDRU.HHE. ML:0.3 0.00001721737 0.12 AML other m 2023-04-22T00:53:23.91
IV.CDRU.HHN. ML:0.2 0.0000082981775 0.3 AML other m 2023-04-22T00:53:23.21
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