Earthquake with magnitude of ML 1.2 on date 26-08-2020 and time 02:10:42 (Italy) in region 11 km NE Courmayeur (AO)

A magnitude ML 1.2 earthquake occured in region: 11 km NE Courmayeur (AO), on

  • 26-08-2020 00:10:42 (UTC)
  • 26-08-2020 02:10:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.8850, 7.0240 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 11 2807 2807
Pré-Saint-Didier AO 14 1050 3857
Saint-Rhémy-en-Bosses AO 14 338 4195
Morgex AO 14 2104 6299
La Salle AO 16 2087 8386
Saint-Oyen AO 16 203 8589
Etroubles AO 18 501 9090
La Thuile AO 20 761 9851

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 1.2 2020-08-26
00:10:42
45.885 7.024 10 2020-08-26
00:14:42
Sala Sismica INGV-Roma 82331191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-26 00:10:42 ± 0.2
Latitude 45.8850 ± 0.0117
Longitude 7.0240 ± 0.0155
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82331191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1380
Semi-minor axis of confidence ellipse (meter) 1060
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 146
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 177
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.62683
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 82331191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-26 00:14:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.LSD.HHZ. 2020-08-26T00:10:56.80 0.6 undecidable manual S 170 48.0186 50 -0.74 39
GU.TRAV.HHZ. 2020-08-26T00:10:54.66 0.6 negative manual P 126 69.5748 50 0.36 43
GU.SATI.HHZ. 2020-08-26T00:10:54.41 1.0 positive manual P 91 65.1903 50 0.78 19
CH.DIX.HHZ. 2020-08-26T00:10:53.65 0.6 undecidable manual S 54 36.6411 50 -0.87 38
GU.LSD.HHZ. 2020-08-26T00:10:51.25 0.1 positive manual P 170 48.0186 50 0.28 90
GU.CIRO.HHZ. 2020-08-26T00:10:51.94 0.6 negative manual P 127 52.503 50 0.26 45
CH.DIX.HHZ. 2020-08-26T00:10:49.19 0.6 positive manual P 54 36.6411 50 -0.04 48
IV.MRGE.HHZ. 2020-08-26T00:10:47.35 0.6 undecidable manual S 167 13.0758 127 -0.34 47
GU.REMY.HHZ. 2020-08-26T00:10:47.05 0.6 undecidable manual S 117 11.4774 131 -0.21 49
GU.BLANC.HHZ. 2020-08-26T00:10:46.01 0.6 undecidable manual S 237 8.2806 140 -0.46 47
GU.REMY.HHZ. 2020-08-26T00:10:45.24 0.1 positive manual P 117 11.4774 131 0.2 98
IV.MRGE.HHZ. 2020-08-26T00:10:45.41 0.1 positive manual P 167 13.0758 127 0.12 99
GU.BLANC.HHZ. 2020-08-26T00:10:44.71 0.1 undecidable manual P 237 8.2806 140 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.REMY.HHE. ML:1.2 0.00017299999999999998 0.12 AML other m 2020-08-26T00:10:45.32
GU.REMY.HHN. ML:0.8 0.00007225000000000001 0.52 AML other m 2020-08-26T00:10:45.46
IV.MRGE.HHE. ML:1.6 0.0004215 0.22 AML other m 2020-08-26T00:10:47.42
IV.MRGE.HHN. ML:1.3 0.00020999999999999998 0.06 AML other m 2020-08-26T00:10:47.57
GU.LSD.HHN. ML:1.2 0.00003795 1.1 AML other m 2020-08-26T00:10:56.96
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