Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 26-02-2023 and time 09:03:08 (UTC) in region 3 km E Santomenna (SA)

A magnitude ML 1.8 earthquake occured in region: 3 km E Santomenna (SA), on

  • 26-02-2023 09:03:08 (UTC)
  • 26-02-2023 10:03:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.7970, 15.3590 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
Santomenna SA 3 443 443
Castelnuovo di Conza SA 4 619 1062
Laviano SA 5 1438 2500
Pescopagano PZ 6 1910 4410
Sant'Andrea di Conza AV 6 1539 5949
Castelgrande PZ 6 943 6892
Conza della Campania AV 7 1373 8265
Colliano SA 10 3638 11903
Valva SA 10 1643 13546
Teora AV 11 1537 15083
Cairano AV 11 326 15409
Caposele AV 11 3483 18892
Muro Lucano PZ 12 5497 24389
Calabritto AV 12 2391 26780
Rapone PZ 13 990 27770
Calitri AV 13 4666 32436
Senerchia AV 14 842 33278
San Fele PZ 16 3004 36282
Oliveto Citra SA 16 3802 40084
Andretta AV 16 1927 42011
Bella PZ 16 5171 47182
San Gregorio Magno SA 16 4286 51468
Palomonte SA 16 3985 55453
Ruvo del Monte PZ 16 1083 56536
Lioni AV 17 6201 62737
Morra De Sanctis AV 17 1297 64034
Ricigliano SA 18 1144 65178
Buccino SA 18 5047 70225
Contursi Terme SA 19 3394 73619
Romagnano al Monte SA 20 368 73987

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Battipaglia (50786 inhabitants)
42 Km W of Potenza (67122 inhabitants)
49 Km E of Avellino (54857 inhabitants)
52 Km E of Salerno (135261 inhabitants)
56 Km E of Cava de' Tirreni (53659 inhabitants)
61 Km SE of Benevento (60091 inhabitants)
69 Km SW of Cerignola (58396 inhabitants)
70 Km E of Scafati (50787 inhabitants)
75 Km E of Castellammare di Stabia (66466 inhabitants)
76 Km S of Foggia (151991 inhabitants)
84 Km E of Torre del Greco (86275 inhabitants)
85 Km E of Portici (55274 inhabitants)
85 Km E of Acerra (59573 inhabitants)
85 Km E of Ercolano (53709 inhabitants)
89 Km E of Afragola (65057 inhabitants)
91 Km E of Casoria (77642 inhabitants)
92 Km E of Caserta (76326 inhabitants)
92 Km SW of Andria (100440 inhabitants)
93 Km E of Napoli (974074 inhabitants)
97 Km SW of Barletta (94814 inhabitants)
98 Km E of Giugliano in Campania (122974 inhabitants)
99 Km E of Aversa (53047 inhabitants)
99 Km S of San Severo (53905 inhabitants)
99 Km E of Marano di Napoli (59874 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 2023-02-26
09:03:08		 40.7972 15.3588 11 2024-03-01
17:18:12		 Bollettino Sismico Italiano INGV 118539741
Reviewed
Rev100 		ML 1.8 2023-02-26
09:03:08		 40.798 15.3718 11 2023-02-26
14:50:22		 Sala Sismica INGV-Roma 114826291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-26 09:03:08 ± 0.07
Latitude 40.7972 ± 0.0045
Longitude 15.3588 ± 0.0071
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118539741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 598
Semi-minor axis of confidence ellipse (meter) 426
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 32
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.57916
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 114826291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-26 14:50:22

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 118539741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-19 02:03:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOCO.HHZ. 2023-02-26T09:03:32.01 3.0 undecidable manual S 0.52 0
OT.OT05.EHZ. 2023-02-26T09:03:26.16 3.0 positive manual P -0.66 0
IV.MCEL.HHZ. 2023-02-26T09:03:20.14 0.6 undecidable manual P 144 64.2912 50 0.24 44
IV.CDRU.HHZ. 2023-02-26T09:03:20.58 1.0 undecidable manual S 188 34.4433 50 0.31 23
IX.RSF3.HNZ. 2023-02-26T09:03:17.65 0.6 undecidable manual S 320 24.0537 50 0.14 48
IV.SGTA.HNZ. 2023-02-26T09:03:16.12 0.6 undecidable manual P 1 37.5291 50 0.35 45
IX.RDM3.HHZ.02 2023-02-26T09:03:16.34 0.6 undecidable manual S 60 17.2716 121 0.85 39
IX.STN3.HNZ.02 2023-02-26T09:03:16.45 1.0 undecidable manual P 140 38.5281 50 0.53 21
IV.CDRU.HHZ. 2023-02-26T09:03:15.09 0.1 positive manual P 188 34.4433 50 -0.2 93
IX.SRN3.HNE.02 2023-02-26T09:03:15.47 0.1 undecidable manual P 166 35.5422 50 0.01 96
IV.MCRV.HHZ. 2023-02-26T09:03:15.69 0.6 undecidable manual S 264 16.0728 123 0.54 44
IX.LIO3.HHZ.02 2023-02-26T09:03:15.38 0.6 undecidable manual S 307 18.6702 119 -0.53 44
5H.FR03.EHZ. 2023-02-26T09:03:15.05 0.6 undecidable manual P 333 35.9418 50 -0.47 44
IV.CAFE.HHN. 2023-02-26T09:03:14.37 0.6 undecidable manual P 338 27.5502 50 0.13 48
IV.SGO.HNZ. 2023-02-26T09:03:14.06 0.1 undecidable manual P 189 26.5512 50 -0.03 98
IX.CLT3.EHZ.02 2023-02-26T09:03:14.77 0.1 undecidable manual S 18 12.3765 130 0.65 85
IX.SSB3.HNE.02 2023-02-26T09:03:14.93 0.6 undecidable manual P 341 33.0447 50 -0.15 47
IX.COL3.HHZ. 2023-02-26T09:03:14.64 0.6 undecidable manual S 191 12.4764 130 0.5 45
IX.BEL3.HNE.01 2023-02-26T09:03:14.82 0.6 undecidable manual P 111 25.0527 50 0.97 36
IX.VDS3.HNZ.01 2023-02-26T09:03:13.05 0.6 undecidable manual S 137 8.4804 141 -0.12 49
IX.RSF3.HNZ. 2023-02-26T09:03:13.38 0.1 positive manual P 320 24.0537 50 -0.32 92
IV.MRLC.HHZ. 2023-02-26T09:03:13.74 0.6 undecidable manual S 112 11.7771 132 -0.23 48
5H.FR05.EHZ. 2023-02-26T09:03:13.24 0.3 undecidable manual P 338 22.755 50 -0.25 70
IX.SALI.HNZ.01 2023-02-26T09:03:13.26 0.1 positive manual P 315 21.0678 116 0.06 98
IX.RDM3.HHZ.02 2023-02-26T09:03:12.73 0.6 undecidable manual P 60 17.2716 121 0.2 48
IV.SNAL.HHZ. 2023-02-26T09:03:12.97 0.1 positive manual P 319 18.9699 119 0.13 97
IV.MCRV.HHZ. 2023-02-26T09:03:12.39 0.1 positive manual P 264 16.0728 123 0.05 99
IX.LIO3.HHZ.02 2023-02-26T09:03:12.55 0.3 undecidable manual P 307 18.6702 119 -0.22 71
IX.CSG3.HNZ.01 2023-02-26T09:03:12.37 0.6 undecidable manual S 75 9.0798 139 -0.93 38
IX.CLT3.EHZ.02 2023-02-26T09:03:11.71 0.1 positive manual P 18 12.3765 130 -0.03 100
IX.COL3.HHZ. 2023-02-26T09:03:11.92 0.1 undecidable manual P 191 12.4764 130 0.17 97
IX.VDS3.HNZ.01 2023-02-26T09:03:11.02 0.1 undecidable manual P 137 8.4804 141 -0.17 98
IV.MRLC.HHZ. 2023-02-26T09:03:11.33 0.1 positive manual P 112 11.7771 132 -0.33 94
IX.CSG3.HNZ.01 2023-02-26T09:03:10.64 0.3 undecidable manual P 75 9.0798 139 -0.63 65
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HNN. ML:1.8 0.0007795 0.26 AML other m 2023-02-26T09:03:14.33
IV.MRLC.HHN. ML:2.2 0.0016273035 0.2816 AML other m 2023-02-26T09:03:14.33
IX.CLT3.HNN.01 ML:2.4 0.0026958109999999998 0.224 AML other m 2023-02-26T09:03:15.79
IX.CLT3.EHN.02 ML:2.4 0.0026770275 0.2432 AML other m 2023-02-26T09:03:15.79
IX.CLT3.HNE.01 ML:2.4 0.0027199999999999998 0.2 AML other m 2023-02-26T09:03:16.05
IX.CLT3.EHE.02 ML:2.4 0.0027800000000000004 0.2 AML other m 2023-02-26T09:03:16.05
IV.MRLC.HNE. ML:1.7 0.00059227205 0.2752 AML other m 2023-02-26T09:03:16.46
IV.MRLC.HHE. ML:2.0 0.0012331924999999999 0.2752 AML other m 2023-02-26T09:03:16.46
IV.SNAL.HNN. ML:1.7 0.00040689375000000006 0.352 AML other m 2023-02-26T09:03:21.38
IV.SNAL.HHN. ML:1.7 0.00039158784999999995 0.2944 AML other m 2023-02-26T09:03:21.54
IV.CDRU.HHN. ML:1.5 0.0001342 0.22 AML other m 2023-02-26T09:03:21.59
IV.CDRU.HNN. ML:1.6 0.00016574305 0.2304 AML other m 2023-02-26T09:03:21.71
IV.CDRU.HNE. ML:1.7 0.00021397305 0.192 AML other m 2023-02-26T09:03:21.71
IV.CDRU.HHE. ML:1.7 0.0002208207 0.1792 AML other m 2023-02-26T09:03:21.71
IV.SNAL.HHE. ML:1.7 0.0004046227 1.5776 AML other m 2023-02-26T09:03:22.00
IV.SNAL.HNE. ML:1.7 0.0003794153 1.5648 AML other m 2023-02-26T09:03:22.01
IV.MCEL.HHN. ML:1.6 0.00007040284499999999 1.04 AML other m 2023-02-26T09:03:29.56
IV.MCEL.HNE. ML:2.0 0.00017449999999999999 0.52 AML other m 2023-02-26T09:03:32.49
IV.MCEL.HHE. ML:1.5 0.000056744695 0.3008 AML other m 2023-02-26T09:03:33.56
IV.MCEL.HNN. ML:1.9 0.0001549043 0.6592 AML other m 2023-02-26T09:03:39.86
OT.OT05.EHN. ML:2.0 0.000093527855 1.5424 AML other m 2023-02-26T09:03:39.17
OT.OT05.EHE. ML:0.7 0.0000068114880000000004 0.9632 AML other m 2023-02-26T09:04:02.54
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