Earthquake with magnitude of ML 1.4 on date 25-09-2020 and time 00:41:21 (Italy) in region V3 Monte Bianco (ITALIA, FRANCIA, SVIZZERA)

A magnitude ML 1.4 earthquake occured in region: V3 Monte Bianco (ITALIA, FRANCIA, SVIZZERA), on

  • 24-09-2020 22:41:21 (UTC)
  • 25-09-2020 00:41:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.8690, 6.9830 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
Courmayeur AO 8 2807 2807
Pré-Saint-Didier AO 12 1050 3857
Morgex AO 13 2104 5961
La Salle AO 15 2087 8048
Saint-Rhémy-en-Bosses AO 16 338 8386
La Thuile AO 17 761 9147
Saint-Oyen AO 19 203 9350

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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 1.4 2020-09-24
22:41:21
45.8693 6.9827 11 2020-09-24
22:46:43
Sala Sismica INGV-Roma 83214221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-24 22:41:21 ± 0.22
Latitude 45.8693 ± 0.0099
Longitude 6.9827 ± 0.0168
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83214221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1304
Semi-minor axis of confidence ellipse (meter) 1056
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 296
Circular confidence region, given by single value of horizontal uncertainty (meter) 1300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48833
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 83214221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-24 22:46:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CIRO.HHZ. 2020-09-24T22:41:38.51 0.3 undecidable manual S 123 54.2013 50 -0.28 65
GU.SATI.HHZ. 2020-09-24T22:41:37.05 3.0 undecidable manual P 2.54 0
GU.LSD.HHZ. 2020-09-24T22:41:36.64 0.3 undecidable manual S 165 46.9197 50 -0.22 67
CH.DIX.HHZ. 2020-09-24T22:41:34.75 0.3 undecidable manual S 54 40.3263 50 -0.33 66
GU.CIRO.HHZ. 2020-09-24T22:41:32.17 1.0 negative manual P 123 54.2013 50 0.58 20
GU.LSD.HHZ. 2020-09-24T22:41:31.13 0.6 negative manual P 165 46.9197 50 0.66 39
CH.DIX.HHZ. 2020-09-24T22:41:29.83 1.0 negative manual P 54 40.3263 50 0.38 22
GU.REMY.HHZ. 2020-09-24T22:41:27.64 0.6 undecidable manual S 105 13.875 127 -0.16 48
IV.MRGE.HHZ. 2020-09-24T22:41:27.20 0.6 undecidable manual S 151 12.5763 130 -0.25 47
GU.REMY.HHZ. 2020-09-24T22:41:25.56 0.1 undecidable manual P 105 13.875 127 0.32 92
IV.MRGE.HHZ. 2020-09-24T22:41:25.30 0.1 positive manual P 151 12.5763 130 0.26 94
GU.BLANC.HHZ. 2020-09-24T22:41:25.03 0.6 undecidable manual S 234 4.6953 156 -0.71 42
GU.BLANC.HHZ. 2020-09-24T22:41:24.08 0.1 positive manual P 234 4.6953 156 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BLANC.HHN. ML:1.8 0.0010705 0.26 AML other m 2020-09-24T22:41:25.51
GU.BLANC.HHE. ML:1.6 0.0007315 1.02 AML other m 2020-09-24T22:41:25.42
IV.MRGE.HHE. ML:1.8 0.0005985000000000001 0.28 AML other m 2020-09-24T22:41:27.36
IV.MRGE.HHN. ML:2.0 0.0010385 0.28 AML other m 2020-09-24T22:41:27.37
GU.REMY.HHE. ML:1.3 0.0001905 1.42 AML other m 2020-09-24T22:41:28.24
GU.REMY.HHN. ML:1.2 0.00017199999999999998 1.54 AML other m 2020-09-24T22:41:29.79
GU.LSD.HHE. ML:1.4 0.00007644999999999999 0.26 AML other m 2020-09-24T22:41:36.84
GU.LSD.HHN. ML:1.2 0.00004425 0.88 AML other m 2020-09-24T22:41:37.47
GU.CIRO.HHN. ML:1.0 0.00002715 0.7 AML other m 2020-09-24T22:41:39.39
GU.CIRO.HHE. ML:1.2 0.00003255 1.58 AML other m 2020-09-24T22:41:42.09
CH.DIX.HHE. ML:1.3 0.00007313344000000001 0.1792 AML other m 2020-09-24T22:41:35.40
CH.DIX.HHN. ML:1.2 0.000055621435 0.2176 AML other m 2020-09-24T22:41:37.97
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