Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 05-05-2023 and time 23:51:32 (Italy) in region 5 km N San Gregorio Magno (SA)

A magnitude ML 1.0 earthquake occured in region: 5 km N San Gregorio Magno (SA), on

  • 05-05-2023 21:51:32 (UTC)
  • 05-05-2023 23:51:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 40.6990, 15.4030 at 6 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
San Gregorio Magno SA 5 4286 4286
Ricigliano SA 8 1144 5430
Buccino SA 8 5047 10477
Romagnano al Monte SA 8 368 10845
Muro Lucano PZ 9 5497 16342
Colliano SA 10 3638 19980
Castelgrande PZ 10 943 20923
Palomonte SA 10 3985 24908
Balvano PZ 11 1830 26738
Valva SA 12 1643 28381
Laviano SA 13 1438 29819
Salvitelle SA 13 560 30379
Bella PZ 13 5171 35550
Santomenna SA 14 443 35993
Oliveto Citra SA 14 3802 39795
Vietri di Potenza PZ 14 2832 42627
Contursi Terme SA 15 3394 46021
Castelnuovo di Conza SA 15 619 46640
Pescopagano PZ 15 1910 48550
Auletta SA 16 2336 50886
Baragiano PZ 16 2671 53557
Sant'Andrea di Conza AV 17 1539 55096
Caggiano SA 17 2765 57861
Senerchia AV 17 842 58703
Sicignano degli Alburni SA 17 3519 62222
Pertosa SA 18 690 62912
San Fele PZ 18 3004 65916
Calabritto AV 18 2391 68307
Rapone PZ 18 990 69297
Conza della Campania AV 19 1373 70670
Petina SA 19 1159 71829
Savoia di Lucania PZ 19 1127 72956
Caposele AV 20 3483 76439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Potenza (67122 inhabitants)
37 Km E of Battipaglia (50786 inhabitants)
54 Km E of Salerno (135261 inhabitants)
56 Km E of Avellino (54857 inhabitants)
59 Km E of Cava de' Tirreni (53659 inhabitants)
71 Km SE of Benevento (60091 inhabitants)
74 Km E of Scafati (50787 inhabitants)
76 Km SW of Cerignola (58396 inhabitants)
78 Km E of Castellammare di Stabia (66466 inhabitants)
86 Km S of Foggia (151991 inhabitants)
88 Km E of Torre del Greco (86275 inhabitants)
89 Km E of Portici (55274 inhabitants)
90 Km E of Ercolano (53709 inhabitants)
91 Km E of Acerra (59573 inhabitants)
95 Km E of Afragola (65057 inhabitants)
95 Km SW of Andria (100440 inhabitants)
96 Km E of Casoria (77642 inhabitants)
98 Km W of Altamura (70396 inhabitants)
98 Km E of Napoli (974074 inhabitants)
99 Km E of Caserta (76326 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
Reviewed
Rev100 		ML 1.0 2023-05-05
21:51:32		 40.6988 15.4027 7 2023-05-05
22:06:54		 Sala Sismica INGV-Roma 117066581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-05 21:51:32 ± 0.15
Latitude 40.6988 ± 0.0063
Longitude 15.4027 ± 0.0071
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117066581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 650
Semi-minor axis of confidence ellipse (meter) 414
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.38761
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 117066581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-05 22:06:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNAL.HHZ. 2023-05-05T21:51:44.26 0.3 undecidable manual S 327 29.9478 102 0.99 54
IV.CMPR.HNE. 2023-05-05T21:51:41.05 0.1 undecidable manual P 191 43.0236 50 -0.23 92
IV.MCRV.HHZ. 2023-05-05T21:51:40.35 0.3 undecidable manual S 295 21.7671 107 -0.17 72
IX.RDM3.HHZ.02 2023-05-05T21:51:38.04 0.1 undecidable manual P 30 22.5552 106 0.7 83
IV.SNAL.HHZ. 2023-05-05T21:51:38.64 0.3 undecidable manual P 327 29.9478 102 -0.13 72
IX.NSC3.EHZ.02 2023-05-05T21:51:37.99 0.1 undecidable manual P 305 28.749 103 -0.54 87
IX.SRN3.HHZ.02 2023-05-05T21:51:37.83 0.1 undecidable manual P 169 24.0537 105 0.2 95
IV.CDRU.HNZ. 2023-05-05T21:51:37.64 0.1 undecidable manual P 200 24.6531 105 -0.1 97
IX.SCL3.EHZ.02 2023-05-05T21:51:36.32 0.3 undecidable manual S 93 9.1797 125 -0.21 73
IV.SGO.HHZ. 2023-05-05T21:51:36.59 0.1 undecidable manual P 208 17.2716 111 0.25 95
IX.COL3.HHZ.02 2023-05-05T21:51:36.07 0.3 undecidable manual S 258 6.1938 136 0.31 72
IV.MCRV.HHZ. 2023-05-05T21:51:36.77 0.1 undecidable manual P 295 21.7671 107 -0.41 92
IV.MRLC.HHZ. 2023-05-05T21:51:36.42 0.3 undecidable manual S 49 9.6792 124 -0.25 73
IV.MRLC.HHZ. 2023-05-05T21:51:35.02 0.3 undecidable manual P 49 9.6792 124 0.06 76
IX.SCL3.EHZ.02 2023-05-05T21:51:35.09 0.3 undecidable manual P 93 9.1797 125 0.21 73
IX.VDS3.HNZ.01 2023-05-05T21:51:35.16 0.3 undecidable manual S 24 5.0949 142 -0.34 72
IX.VDS3.HNZ.01 2023-05-05T21:51:34.16 0.1 undecidable manual P 24 5.0949 142 -0.13 100
IX.COL3.HHZ.02 2023-05-05T21:51:34.52 0.3 undecidable manual P 258 6.1938 136 0.09 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRLC.HHE. ML:0.8 0.00009038832 0.2432 AML other m 2023-05-05T21:51:37.13
IV.MRLC.HHN. ML:1.1 0.00020500000000000002 0.38 AML other m 2023-05-05T21:51:37.98
IX.SCL3.EHE.02 ML:1.2 0.0002655 0.76 AML other m 2023-05-05T21:51:38.30
IX.SCL3.EHN.02 ML:1.1 0.0002320406 0.192 AML other m 2023-05-05T21:51:37.75
IV.MCRV.HHE. ML:1.0 0.00006291465 0.1664 AML other m 2023-05-05T21:51:41.57
IV.MCRV.HHN. ML:1.2 0.00011899999999999999 0.14 AML other m 2023-05-05T21:51:41.57
IX.COL3.HHE.02 ML:0.0 0.00056505605 0.1664 AML other m 2023-05-05T21:51:37.63
IX.COL3.HHN.02 ML:0.0 0.00033477334999999997 0.1792 AML other m 2023-05-05T21:51:37.55
IX.COL3.HNE.01 ML:0.0 0.00061310955 0.1536 AML other m 2023-05-05T21:51:37.63
IX.COL3.HNN.01 ML:0.0 0.00034512152000000003 0.0896 AML other m 2023-05-05T21:51:36.92
IV.MRLC.HNE. ML:0.4 0.00004255488 0.2176 AML other m 2023-05-05T21:51:37.98
IV.MRLC.HNN. ML:0.8 0.000093383475 0.3584 AML other m 2023-05-05T21:51:37.80
IX.SCL3.HNE.01 ML:1.2 0.00025087993 0.1152 AML other m 2023-05-05T21:51:38.36
IX.SCL3.HNN.01 ML:1.2 0.000270770655 0.2304 AML other m 2023-05-05T21:51:40.08
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