Earthquake with magnitude of ML 1.3 on date 16-05-2023 and time 22:40:01 (UTC) in region Confine Italia Francia (FRANCIA)

A magnitude ML 1.3 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 16-05-2023 22:40:01 (UTC)
  • 17-05-2023 00:40:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5540, 6.8460 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bellino CN 14 109 109
Acceglio CN 14 162 271
Pontechianale CN 16 179 450
Casteldelfino CN 18 157 607
Prazzo CN 18 170 777
Elva CN 19 97 874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
59 Km W of Cuneo (56081 inhabitants)
83 Km SW of Moncalieri (57294 inhabitants)
88 Km SW of Torino (890529 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 1.3 2023-05-16
22:40:01
44.5542 6.8463 10 2023-05-17
00:25:34
Sala Sismica INGV-Roma 117416931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-16 22:40:01 ± 0.38
Latitude 44.5542 ± 0.0180
Longitude 6.8463 ± 0.0328
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117416931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3150
Semi-minor axis of confidence ellipse (meter) 1050
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 3150.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 222
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.19785
Epicentral distance of station farthest from the epicenter (degree) 0.52161
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 117416931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-17 00:25:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RRL.HHZ. 2023-05-16T22:40:14.85 0.1 undecidable manual S 354 40.9257 50 -0.17 94
GU.ENR.HHZ. 2023-05-16T22:40:12.12 0.1 undecidable manual P 128 57.8976 50 0.23 90
GU.BHB.HHZ. 2023-05-16T22:40:10.84 0.3 undecidable manual P 46 45.3213 50 0.9 55
GU.STV.HHZ. 2023-05-16T22:40:10.63 0.3 undecidable manual P 132 51.2154 50 -0.22 69
GU.PZZ.HHZ. 2023-05-16T22:40:09.47 0.3 undecidable manual S 104 21.9669 114 -0.3 71
GU.RRL.HHZ. 2023-05-16T22:40:09.04 0.3 undecidable manual P 354 40.9257 50 -0.23 70
GU.PZZ.HHZ. 2023-05-16T22:40:06.18 0.1 undecidable manual P 104 21.9669 114 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.3 0.00013550000000000001 1.3 AML other m 2023-05-16T22:40:10.65
GU.PZZ.HHE. ML:1.3 0.000127 0.2 AML other m 2023-05-16T22:40:10.66
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