Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 20-02-2023 and time 08:59:28 (UTC) in region 1 km SW Omignano (SA)

A magnitude ML 1.1 earthquake occured in region: 1 km SW Omignano (SA), on

  • 20-02-2023 08:59:28 (UTC)
  • 20-02-2023 09:59:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 40.2410, 15.0790 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Omignano SA 1 1645 1645
Stella Cilento SA 2 738 2383
Sessa Cilento SA 2 1337 3720
San Mauro Cilento SA 3 889 4609
Serramezzana SA 4 331 4940
Lustra SA 6 1075 6015
Pollica SA 6 2393 8408
Perdifumo SA 6 1790 10198
Casal Velino SA 6 5268 15466
Rutino SA 7 842 16308
Laureana Cilento SA 8 1174 17482
Montecorice SA 8 2628 20110
Castelnuovo Cilento SA 9 2732 22842
Perito SA 9 931 23773
Torchiara SA 9 1871 25644
Salento SA 9 1977 27621
Prignano Cilento SA 10 1018 28639
Orria SA 10 1089 29728
Castellabate SA 12 9188 38916
Cicerale SA 12 1220 40136
Ogliastro Cilento SA 13 2270 42406
Gioi SA 13 1278 43684
Ascea SA 14 5820 49504
Agropoli SA 14 21481 70985
Vallo della Lucania SA 16 8531 79516
Ceraso SA 16 2397 81913
Moio della Civitella SA 16 1827 83740
Stio SA 17 872 84612
Monteforte Cilento SA 17 564 85176
Giungano SA 17 1280 86456
Novi Velia SA 18 2324 88780
Magliano Vetere SA 18 695 89475
Trentinara SA 18 1646 91121
Cannalonga SA 18 1063 92184
Campora SA 20 439 92623
Pisciotta SA 20 2641 95264

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km S of Battipaglia (50786 inhabitants)
56 Km SE of Salerno (135261 inhabitants)
60 Km SE of Cava de' Tirreni (53659 inhabitants)
72 Km SE of Castellammare di Stabia (66466 inhabitants)
73 Km SE of Scafati (50787 inhabitants)
76 Km SW of Potenza (67122 inhabitants)
79 Km SE of Avellino (54857 inhabitants)
86 Km SE of Torre del Greco (86275 inhabitants)
89 Km SE of Ercolano (53709 inhabitants)
89 Km SE of Portici (55274 inhabitants)
97 Km SE of Napoli (974074 inhabitants)
99 Km SE of Acerra (59573 inhabitants)
100 Km SE of Casoria (77642 inhabitants)
100 Km SE of Afragola (65057 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 1.1 2023-02-20
08:59:28		 40.2407 15.0787 10 2023-02-20
09:12:06		 Sala Sismica INGV-Roma 114618661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-20 08:59:28 ± 0.16
Latitude 40.2407 ± 0.0036
Longitude 15.0787 ± 0.0094
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 114618661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 810
Semi-minor axis of confidence ellipse (meter) 343
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 79
Circular confidence region, given by single value of horizontal uncertainty (meter) 810.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 263
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37861
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 114618661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-20 09:12:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
HL.ITM.HHZ. 2023-02-20T09:01:22.14 3.0 undecidable manual Pg 19.26 0
IV.PTCC.HHZ. 2023-02-20T09:01:05.72 3.0 undecidable manual Pn -1.12 0
IV.HLNI.HHZ. 2023-02-20T09:01:00.25 3.0 undecidable manual Sg 1.85 0
IV.ERC.EHZ. 2023-02-20T09:00:56.28 3.0 undecidable manual Sn -5.84 0
GU.POPM.HHZ. 2023-02-20T09:00:54.72 3.0 positive manual Pn 4.53 0
IV.IMOL.HNZ. 2023-02-20T09:00:48.51 3.0 positive manual Pn 1.14 0
IV.CSNT.HHZ. 2023-02-20T09:00:43.61 3.0 negative manual Pn 2.75 0
1J.FX13.HHZ. 2023-02-20T09:00:43.28 3.0 undecidable manual Sg -0.4 0
IV.FOSV.EHZ. 2023-02-20T09:00:33.83 3.0 undecidable manual Pg 4.24 0
IV.ACATE.EHZ. 2023-02-20T09:00:29.58 3.0 undecidable manual Pg 3.65 0
IV.SENI.EHZ. 2023-02-20T09:00:26.74 3.0 undecidable manual Pn -5.43 0
CR.STON.BHZ. 2023-02-20T09:00:23.46 3.0 undecidable manual Pn 0.02 0
IV.ORI.HHZ. 2023-02-20T09:00:05.57 3.0 undecidable manual S 0.04 0
IV.RNI2.HHZ. 2023-02-20T09:00:04.29 3.0 undecidable manual P 0.7 0
IV.LRP.EHZ. 2023-02-20T09:00:01.56 3.0 undecidable manual Pn -5.1 0
IV.CAR1.HNZ. 2023-02-20T08:59:55.53 3.0 undecidable manual P -1.63 0
IV.MTMR.EHZ. 2023-02-20T08:59:46.60 3.0 undecidable manual P -1.24 0
IV.SGO.HNZ. 2023-02-20T08:59:42.37 0.3 undecidable manual S 28 40.4262 50 0.03 73
IX.SRN3.HHZ.02 2023-02-20T08:59:42.83 0.3 undecidable manual S 50 42.0246 50 0.05 73
IV.MGR.HHZ. 2023-02-20T08:59:42.54 0.1 undecidable manual S 106 41.8248 50 -0.18 94
IV.BULG.HHZ. 2023-02-20T08:59:40.19 0.6 undecidable manual S 125 31.0467 50 0.34 47
IV.CDRU.HHZ. 2023-02-20T08:59:40.63 0.3 undecidable manual S 35 33.5442 50 0.11 73
IV.CMPR.HHZ. 2023-02-20T08:59:36.97 0.3 undecidable manual S 66 20.868 116 -0.02 76
IV.MGR.HHZ. 2023-02-20T08:59:36.70 0.1 undecidable manual P 106 41.8248 50 -0.19 94
IV.SGO.HNZ. 2023-02-20T08:59:36.55 0.3 undecidable manual P 28 40.4262 50 -0.12 72
IX.SRN3.HHZ.02 2023-02-20T08:59:36.97 0.1 undecidable manual P 50 42.0246 50 0.04 97
IV.CDRU.HHZ. 2023-02-20T08:59:35.54 0.1 undecidable manual P 35 33.5442 50 -0.08 98
IV.BULG.HHZ. 2023-02-20T08:59:35.36 0.1 undecidable manual P 125 31.0467 50 0.12 97
IV.CMPR.HHZ. 2023-02-20T08:59:33.66 0.1 undecidable manual P 66 20.868 116 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CDRU.HHE. ML:1.2 0.0000675 0.5 AML other m 2023-02-20T08:59:41.71
IV.CDRU.HHN. ML:1.0 0.0000451 1 AML other m 2023-02-20T08:59:41.76
IV.MGR.HHN. ML:1.2 0.0000528 0.84 AML other m 2023-02-20T08:59:43.13
IX.SRN3.HHN.02 ML:1.3 0.00006155 0.5 AML other m 2023-02-20T08:59:44.36
IV.MGR.HHE. ML:1.0 0.000029999999999999997 0.2 AML other m 2023-02-20T08:59:44.66
IX.SRN3.HHE.02 ML:1.1 0.000046 0.56 AML other m 2023-02-20T08:59:45.45
IV.CMPR.HHE. ML:1.1 0.00009045617 0.1024 AML other m 2023-02-20T08:59:37.13
IV.CMPR.HHN. ML:1.0 0.000067043715 0.0576 AML other m 2023-02-20T08:59:37.18
IV.BULG.HHE. ML:0.7 0.000027364835 0.1792 AML other m 2023-02-20T08:59:41.38
IV.BULG.HHN. ML:1.1 0.000057300405 0.1792 AML other m 2023-02-20T08:59:41.66
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