Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 09-07-2021 and time 07:55:29 (Italy) in region Confine Italia Francia (FRANCIA)

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

  • 09-07-2021 05:55:29 (UTC)
  • 09-07-2021 07:55:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.4460, 6.6900 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
88 Km W of Torino (890529 inhabitants)
92 Km NW 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
Bulletin
Rev1000 		ML 0.9 2021-07-09
05:55:29		 45.4465 6.6902 10 2021-12-29
11:12:13		 Bollettino Sismico Italiano INGV 93015441
Reviewed
Rev100 		ML 0.9 2021-07-09
05:55:29		 45.4583 6.7033 10 2021-07-09
06:09:50		 Sala Sismica INGV-Roma 92473491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-09 05:55:29 ± 0.21
Latitude 45.4465 ± 0.0099
Longitude 6.6902 ± 0.0244
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93015441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1980
Semi-minor axis of confidence ellipse (meter) 900
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 293
Circular confidence region, given by single value of horizontal uncertainty (meter) 1980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 14
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77701
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.0
Num. used stations 4
Type of magnitude ML
Reference to an origin 92473491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-09 06:09:50

ML:0.9

Field Value
Value 0.9
Uncertainty 0.0
Num. used stations 4
Type of magnitude ML
Reference to an origin 93015441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-01 16:05:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TST02.HHZ. 2021-07-09T05:57:24.79 3.0 undecidable manual Pg 15.02 0
IV.ATCC.EHZ. 2021-07-09T05:57:02.90 3.0 positive manual Pg 16.959999 0
GU.POPM.HHZ. 2021-07-09T05:57:01.99 3.0 undecidable manual Sn -1.91 0
IV.LAV9.HHZ. 2021-07-09T05:57:01.63 3.0 negative manual Pn 2.93 0
IV.MCIV.CHZ. 2021-07-09T05:56:54.53 3.0 positive manual Pg 13.59 0
MN.TRI.HHZ. 2021-07-09T05:56:50.72 3.0 negative manual Pn 2.53 0
IV.FREG.EHZ. 2021-07-09T05:56:33.51 3.0 undecidable manual Pn -1.02 0
IV.EUCT.HNZ. 2021-07-09T05:56:27.80 3.0 undecidable manual Sn -0.26 0
IV.ZEN8.EHZ. 2021-07-09T05:56:18.23 3.0 undecidable manual Pn -0.71 0
IV.ZONE.HHZ. 2021-07-09T05:56:10.29 3.0 negative manual Pn -2.91 0
GU.RRL.HHZ. 2021-07-09T05:55:47.80 0.6 undecidable manual S 172 58.7967 50 0.07 48
GU.TRAV.HHZ. 2021-07-09T05:55:44.15 0.3 undecidable manual P 85 82.4508 50 0.56 62
RD.ORIF.BHE. 2021-07-09T05:55:44.20 0.3 undecidable manual P 228 86.247 50 0.01 69
GU.BLANC.HHZ. 2021-07-09T05:55:44.69 0.6 undecidable manual S 23 48.0186 50 -0.16 48
GU.BHB.HHZ. 2021-07-09T05:55:44.01 0.1 undecidable manual P 146 81.252 50 0.6 81
IV.MRGE.HHZ. 2021-07-09T05:55:43.40 0.6 undecidable manual S 39 46.0206 50 -0.9 38
MN.BNI.HHZ. 2021-07-09T05:55:42.48 0.6 undecidable manual S 181 43.8228 50 -1.23 33
GU.CIRO.HHZ. 2021-07-09T05:55:42.02 0.6 undecidable manual P 76 70.374 50 0.29 45
GU.RRL.HHZ. 2021-07-09T05:55:40.15 0.1 undecidable manual P 172 58.7967 50 0.2 94
GU.LSD.HHZ. 2021-07-09T05:55:40.60 0.6 undecidable manual S 87 34.5432 50 -0.65 43
GU.BLANC.HHZ. 2021-07-09T05:55:38.89 0.6 undecidable manual P 23 48.0186 50 0.61 43
IV.MRGE.HHZ. 2021-07-09T05:55:37.87 0.1 undecidable manual P 39 46.0206 50 -0.1 98
MN.BNI.HHZ. 2021-07-09T05:55:37.27 0.1 undecidable manual P 181 43.8228 50 -0.36 93
GU.LSD.HHZ. 2021-07-09T05:55:36.30 0.1 undecidable manual P 87 34.5432 50 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.LSD.HHE. ML:0.9 0.000035799999999999996 0.24 AML other m 2021-07-09T05:55:41.72
GU.LSD.HHN. ML:1.0 0.00003990000000000001 0.88 AML other m 2021-07-09T05:55:42.60
MN.BNI.HHE. ML:0.9 0.000024550000000000004 0.24 AML other m 2021-07-09T05:55:44.52
MN.BNI.HHN. ML:0.9 0.00002505 0.22 AML other m 2021-07-09T05:55:44.69
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