Earthquake with magnitude of ML 1.5 on date 11-09-2021 and time 22:34:49 (Italy) in region 8 km W Saint Rhémy en Bosses (AO)

A magnitude ML 1.5 earthquake occured in region: 8 km W Saint Rhémy en Bosses (AO), on

  • 11-09-2021 20:34:49 (UTC)
  • 11-09-2021 22:34:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.8520, 7.0910 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Saint-Rhémy-en-Bosses AO 8 338 338
Saint-Oyen AO 10 203 541
Courmayeur AO 11 2807 3348
Morgex AO 11 2104 5452
Etroubles AO 12 501 5953
La Salle AO 12 2087 8040
Pré-Saint-Didier AO 13 1050 9090
Allein AO 15 229 9319
Saint-Nicolas AO 16 311 9630
Avise AO 16 305 9935
Ollomont AO 17 157 10092
Doues AO 17 510 10602
Arvier AO 18 873 11475
Gignod AO 18 1710 13185
La Thuile AO 19 761 13946
Roisan AO 19 1036 14982
Valpelline AO 19 657 15639
Saint-Pierre AO 19 3165 18804
Villeneuve AO 19 1289 20093
Introd AO 19 658 20751
Sarre AO 20 4927 25678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
98 Km NW 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
Bulletin
Rev1000
ML 1.5 2021-09-11
20:34:49
45.8522 7.0908 9 2022-03-30
13:04:08
Bollettino Sismico Italiano INGV 96035821
Reviewed
Rev100
ML 1.5 2021-09-11
20:34:49
45.8555 7.0798 9 2021-09-11
20:42:18
Sala Sismica INGV-Roma 95316261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-11 20:34:49 ± 0.28
Latitude 45.8522 ± 0.0126
Longitude 7.0908 ± 0.0284
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96035821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2134
Semi-minor axis of confidence ellipse (meter) 1253
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 2130.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
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) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 1.37237
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 96035821
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-07 15:34:19

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 95316261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-11 20:42:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.BNALP.HHZ. 2021-09-11T20:35:16.51 0.3 undecidable manual P 42 152.3364 50 2.21 20
RD.ORIF.BHZ. 2021-09-11T20:35:14.18 0.6 undecidable manual P 223 140.0487 50 1.76 20
GU.BHB.HHZ. 2021-09-11T20:35:09.10 0.3 undecidable manual P 173 113.5974 50 0.77 55
CH.GIMEL.HHE. 2021-09-11T20:35:06.03 0.3 undecidable manual P 320 98.6235 50 0 70
MN.BNI.HHE. 2021-09-11T20:35:05.09 0.3 undecidable manual P 200 94.4388 50 -0.28 66
GU.CIRO.HHZ. 2021-09-11T20:35:04.40 0.6 undecidable manual S 127 46.2204 50 0.04 51
GU.LSD.HHZ. 2021-09-11T20:35:02.75 0.3 undecidable manual S 176 43.623 50 -0.93 58
CH.MMK.HHE. 2021-09-11T20:35:01.64 0.3 undecidable manual P 72 70.8735 50 -0.11 72
GU.TRAV.HHZ. 2021-09-11T20:35:01.07 0.1 undecidable manual P 126 63.2922 50 0.49 90
CH.DIX.HHZ. 2021-09-11T20:35:00.60 0.1 undecidable manual S 44 35.2425 50 -0.82 62
GU.CIRO.HHZ. 2021-09-11T20:34:58.31 0.1 undecidable manual P 127 46.2204 50 0.36 95
GU.LSD.HHZ. 2021-09-11T20:34:57.36 0.1 undecidable manual P 176 43.623 50 -0.2 99
CH.DIX.HHZ. 2021-09-11T20:34:56.02 0.1 undecidable manual P 44 35.2425 50 -0.23 100
IV.MRGE.HHZ. 2021-09-11T20:34:53.50 0.6 undecidable manual S 194 9.3795 135 -0.31 51
IV.MRGE.HHZ. 2021-09-11T20:34:51.69 0.1 undecidable manual P 194 9.3795 135 -0.17 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHN. ML:1.8 0.00089895 0.0768 AML other m 2021-09-11T20:34:53.60
IV.MRGE.HHE. ML:1.9 0.00118684755 0.0896 AML other m 2021-09-11T20:34:53.63
CH.DIX.HHE. ML:2.0 0.00040654980000000003 0.192 AML other m 2021-09-11T20:35:00.83
CH.DIX.HHN. ML:1.8 0.0002274071305 1.808 AML other m 2021-09-11T20:35:01.07
GU.LSD.HHE. ML:1.2 0.00005297209 0.1152 AML other m 2021-09-11T20:35:03.05
GU.LSD.HHN. ML:1.1 0.00004045 1.08 AML other m 2021-09-11T20:35:04.89
GU.CIRO.HHE. ML:0.5 0.0000115872395 0.1408 AML other m 2021-09-11T20:35:08.47
GU.TRAV.HHN. ML:1.1 0.000025891314999999998 0.2176 AML other m 2021-09-11T20:35:09.61
GU.TRAV.HHE. ML:1.0 0.00002098015 0.192 AML other m 2021-09-11T20:35:10.67
GU.BHB.HNE. ML:1.7 0.00004171747 0.96 AML other m 2021-09-11T20:35:13.51
GU.BHB.HHN. ML:1.3 0.000016183099999999998 0.2816 AML other m 2021-09-11T20:35:25.29
GU.BHB.HHE. ML:1.3 0.00001348485 1.5904 AML other m 2021-09-11T20:35:27.06
GU.MGRO.HHE. ML:1.6 0.0000100529825 1.0016 AML other m 2021-09-11T20:35:36.76
GU.BHB.HNN. ML:1.6 0.0000338962 0.7328 AML other m 2021-09-11T20:35:42.48
GU.MGRO.HNE. ML:2.8 0.00016116355 0.7456 AML other m 2021-09-11T20:36:07.69
GU.MGRO.HHN. ML:1.7 0.00001687002 0.6816 AML other m 2021-09-11T20:36:10.23
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