Earthquake with magnitude of ML 0.9 on date 30-10-2021 and time 12:54:57 (UTC) in region Confine Italia Francia (FRANCIA)

A magnitude ML 0.9 earthquake occured in region: Confine Italia Francia (FRANCIA), on

  • 30-10-2021 12:54:57 (UTC)
  • 30-10-2021 14:54:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2860, 6.8420 at 9 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
Argentera CN 15 83 83
Pietraporzio CN 17 77 160
Sambuco CN 20 92 252

Municipalities with at least 50000 inhabitants

An earthquake occurred to
58 Km W of Cuneo (56081 inhabitants)
91 Km NW of Sanremo (54807 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 0.9 2021-10-30
12:54:57
44.2855 6.8415 9 2021-10-30
13:04:06
Sala Sismica INGV-Roma 97089471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-30 12:54:57 ± 0.26
Latitude 44.2855 ± 0.0081
Longitude 6.8415 ± 0.0138
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97089471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1172
Semi-minor axis of confidence ellipse (meter) 535
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 193
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.29498
Epicentral distance of station farthest from the epicenter (degree) 0.93170
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 97089471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-30 13:04:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BHB.HHZ. 2021-10-30T12:55:19.08 0.3 undecidable manual S 28 69.4749 50 0.23 67
GU.RRL.HHE. 2021-10-30T12:55:18.73 0.3 undecidable manual S 357 70.5738 50 -0.41 64
FR.SAOF.HHE.00 2021-10-30T12:55:17.69 0.6 undecidable manual S 120 65.6898 50 -0.14 46
GU.RSP.HHZ. 2021-10-30T12:55:15.28 0.6 undecidable manual P 19 101.3208 50 0.64 37
RD.ORIF.BHE. 2021-10-30T12:55:14.51 0.3 undecidable manual P 313 103.4187 50 -0.45 60
GU.ENR.HHZ. 2021-10-30T12:55:12.66 0.6 undecidable manual S 98 46.2204 50 0.02 49
GU.GBOS.HHZ. 2021-10-30T12:55:11.61 0.1 undecidable manual P 93 79.4649 50 0.34 86
GU.BHB.HHZ. 2021-10-30T12:55:10.19 0.1 undecidable manual P 28 69.4749 50 0.46 85
GU.STV.HHZ. 2021-10-30T12:55:10.30 0.3 undecidable manual S 96 38.7279 50 -0.35 69
FR.SAOF.HHE.00 2021-10-30T12:55:09.28 0.3 undecidable manual P 120 65.6898 50 0.14 69
GU.RRL.HHE. 2021-10-30T12:55:09.99 0.1 undecidable manual P 357 70.5738 50 0.09 92
GU.PZZ.HHZ. 2021-10-30T12:55:08.65 0.6 undecidable manual S 41 32.745 105 -0.38 46
GU.ENR.HHZ. 2021-10-30T12:55:06.12 0.1 undecidable manual P 98 46.2204 50 -0.03 97
GU.PZZ.HHZ. 2021-10-30T12:55:04.06 0.1 undecidable manual P 41 32.745 105 0 100
GU.STV.HHZ. 2021-10-30T12:55:04.78 0.1 undecidable manual P 96 38.7279 50 -0.22 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:1.3 0.00009272844 0.1024 AML other m 2021-10-30T12:55:09.33
GU.PZZ.HHN. ML:1.2 0.00007375108 0.0832 AML other m 2021-10-30T12:55:09.56
GU.STV.HHE. ML:0.6 0.000016344875 0.2624 AML other m 2021-10-30T12:55:11.45
GU.STV.HHN. ML:0.1 0.0000070729405000000005 0.5184 AML other m 2021-10-30T12:55:10.08
GU.ENR.HHE. ML:0.8 0.000019437481 0.0576 AML other m 2021-10-30T12:55:13.14
GU.ENR.HHN. ML:0.9 0.00002332555 0.1984 AML other m 2021-10-30T12:55:13.28
GU.BHB.HNE. ML:1.1 0.00002035258 0.8512 AML other m 2021-10-30T12:55:19.56
GU.BHB.HNN. ML:0.8 0.00001125048 0.3968 AML other m 2021-10-30T12:55:19.22
GU.BHB.HHE. ML:0.8 0.0000098251133 0.2624 AML other m 2021-10-30T12:55:19.25
GU.BHB.HHN. ML:1.1 0.000022264239000000003 0.3776 AML other m 2021-10-30T12:55:19.82
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