Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 03-12-2023 and time 11:56:25 (UTC) in region 11 km SW Vinadio (CN)

A magnitude ML 1.6 earthquake occured in region: 11 km SW Vinadio (CN), on

  • 03-12-2023 11:56:25 (UTC)
  • 03-12-2023 12:56:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2210, 7.1060 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
Vinadio CN 11 644 644
Sambuco CN 13 92 736
Aisone CN 14 248 984
Pietraporzio CN 15 77 1061
Demonte CN 19 2003 3064

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Cuneo (56081 inhabitants)
70 Km NW of Sanremo (54807 inhabitants)
98 Km SW of Moncalieri (57294 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 1.6 2023-12-03
11:56:25		 44.2212 7.1058 6 2023-12-03
12:11:05		 Sala Sismica INGV-Roma 123761401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-03 11:56:25 ± 0.22
Latitude 44.2212 ± 0.0072
Longitude 7.1058 ± 0.0125
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123761401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1154
Semi-minor axis of confidence ellipse (meter) 355
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 1150.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 199
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.93350
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 123761401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-03 12:11:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGLI.HHZ. 2023-12-03T11:58:10.10 3.0 undecidable manual Sg 1.92 0
IV.PTCC.HHZ. 2023-12-03T11:57:58.55 3.0 undecidable manual Pg 17.049999 0
IV.OSSC.HHZ. 2023-12-03T11:57:52.30 3.0 undecidable manual Sn -2.88 0
IV.GUMA.HHZ. 2023-12-03T11:57:50.13 3.0 undecidable manual Pg 10.94 0
IV.SFI.EHZ. 2023-12-03T11:57:27.52 3.0 negative manual Pg 5.62 0
GU.RRL.HHZ. 2023-12-03T11:56:51.14 0.3 undecidable manual S 342 81.5517 50 0.19 68
4P.IT06A.HHZ. 2023-12-03T11:56:48.08 0.3 undecidable manual S 60 70.5738 50 0.04 72
GU.RSP.HHZ. 2023-12-03T11:56:43.23 0.3 undecidable manual P 7 103.6185 50 -0.38 62
GU.CANO.HHZ. 2023-12-03T11:56:41.80 0.3 undecidable manual P 91 89.9433 50 0.29 66
GU.RRL.HHZ. 2023-12-03T11:56:40.38 0.3 undecidable manual P 342 81.5517 50 0.16 68
GU.RORO.HHZ. 2023-12-03T11:56:39.53 0.1 undecidable manual P 99 77.367 50 -0.05 94
4P.IT06A.HHZ. 2023-12-03T11:56:38.94 0.1 undecidable manual P 60 70.5738 50 0.41 88
GU.IMI.HHZ. 2023-12-03T11:56:38.28 0.3 undecidable manual P 118 71.5728 50 -0.4 66
GU.BHB.HHZ. 2023-12-03T11:56:38.24 0.1 undecidable manual P 10 69.2751 50 -0.09 95
GU.PZZ.HHZ. 2023-12-03T11:56:36.28 0.1 undecidable manual S 1 31.6461 100 -0.43 94
GU.BURY.HHE. 2023-12-03T11:56:36.82 0.3 undecidable manual P 143 60.495 50 -0.16 71
GU.ENR.HHZ. 2023-12-03T11:56:34.05 0.6 undecidable manual S 88 24.8529 103 -0.35 49
FR.SAOF.HHE.00 2023-12-03T11:56:34.13 0.3 undecidable manual P 126 44.1225 50 -0.32 71
GU.PZZ.HHZ. 2023-12-03T11:56:32.25 0.1 undecidable manual P 1 31.6461 100 0.26 98
GU.STV.HHZ. 2023-12-03T11:56:31.87 0.3 undecidable manual S 81 17.7711 108 -0.14 77
GU.ENR.HHZ. 2023-12-03T11:56:30.88 0.1 undecidable manual P 88 24.8529 103 0.22 100
GU.STV.HHZ. 2023-12-03T11:56:29.68 0.1 undecidable manual P 81 17.7711 108 0.4 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:1.2 0.0001285 1.22 AML other m 2023-12-03T11:56:31.94
GU.STV.HHN. ML:1.6 0.00034950000000000004 0.08 AML other m 2023-12-03T11:56:32.14
GU.PZZ.HHN. ML:2.0 0.0004455 0.14 AML other m 2023-12-03T11:56:36.57
GU.PZZ.HHE. ML:2.0 0.0005295 0.62 AML other m 2023-12-03T11:56:36.97
GU.BHB.HHE. ML:1.5 0.000056037619999999995 0.1984 AML other m 2023-12-03T11:56:46.68
GU.BHB.HNE. ML:1.8 0.0000967 0.4 AML other m 2023-12-03T11:56:46.67
GU.BHB.HHN. ML:1.5 0.000051217645000000006 0.1792 AML other m 2023-12-03T11:56:46.90
GU.BHB.HNN. ML:1.6 0.00006890000000000001 0.58 AML other m 2023-12-03T11:56:47.40
GU.RORO.HHE. ML:1.6 0.0000591 0.44 AML other m 2023-12-03T11:56:52.04
GU.RORO.HHN. ML:1.6 0.00006610000000000001 0.42 AML other m 2023-12-03T11:56:52.29
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