Earthquake with magnitude of ML 0.9 on date 27-11-2020 and time 16:13:14 (UTC) in region 8 km NE Courmayeur (AO)

A magnitude ML 0.9 earthquake occured in region: 8 km NE Courmayeur (AO), on

  • 27-11-2020 16:13:14 (UTC)
  • 27-11-2020 17:13:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.8650, 7.0030 at 11 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 11 1050 3857
Morgex AO 12 2104 5961
La Salle AO 14 2087 8048
Saint-Rhémy-en-Bosses AO 15 338 8386
La Thuile AO 17 761 9147
Saint-Oyen AO 17 203 9350
Etroubles AO 19 501 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 0.9 2020-11-27
16:13:14
45.8647 7.0028 11 2020-11-27
16:19:46
Sala Sismica INGV-Roma 85052961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 16:13:14 ± 0.18
Latitude 45.8647 ± 0.0099
Longitude 7.0028 ± 0.0142
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 85052961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1221
Semi-minor axis of confidence ellipse (meter) 1000
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 312
Circular confidence region, given by single value of horizontal uncertainty (meter) 1220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.05216
Epicentral distance of station farthest from the epicenter (degree) 0.62773
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
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 85052961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-27 16:19:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.LSD.HHZ. 2020-11-27T16:13:28.97 0.3 undecidable manual S 167 46.1205 50 -0.43 66
GU.TRAV.HHZ. 2020-11-27T16:13:26.88 1.0 undecidable manual P 124 69.6747 50 0.13 22
CH.DIX.HHZ. 2020-11-27T16:13:26.93 0.6 undecidable manual S 52 39.3273 50 -0.67 41
GU.LSD.HHZ. 2020-11-27T16:13:23.56 0.1 undecidable manual P 167 46.1205 50 0.44 88
CH.DIX.HHZ. 2020-11-27T16:13:22.16 0.1 undecidable manual P 52 39.3273 50 0.08 96
GU.REMY.HHZ. 2020-11-27T16:13:20.07 0.3 undecidable manual S 104 12.2766 131 -0.11 75
IV.MRGE.HHZ. 2020-11-27T16:13:19.65 0.6 undecidable manual S 157 11.4774 133 -0.33 48
GU.REMY.HHZ. 2020-11-27T16:13:18.11 0.1 undecidable manual P 104 12.2766 131 0.31 96
GU.BLANC.HHZ. 2020-11-27T16:13:18.33 0.3 undecidable manual S 247 5.7942 152 -0.43 71
GU.BLANC.HHZ. 2020-11-27T16:13:17.13 0.1 undecidable manual P 247 5.7942 152 0.15 100
IV.MRGE.HHZ. 2020-11-27T16:13:17.84 0.1 undecidable manual P 157 11.4774 133 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHN. ML:0.7 0.000058359485 0.32 AML other m 2020-11-27T16:13:19.79
GU.BLANC.HHE. ML:0.0 0.00018648915 0.1792 AML other m 2020-11-27T16:13:18.44
GU.BLANC.HHN. ML:0.0 0.00019406617 0.1152 AML other m 2020-11-27T16:13:18.35
GU.REMY.HHN. ML:1.2 0.0001535 0.44 AML other m 2020-11-27T16:13:20.26
GU.REMY.HHE. ML:0.8 0.00006560000000000001 0.22 AML other m 2020-11-27T16:13:20.27
IV.MRGE.HHE. ML:0.8 0.00006767975 0.3072 AML other m 2020-11-27T16:13:19.93
CH.DIX.HHE. ML:1.1 0.00004478887499999999 0.7296 AML other m 2020-11-27T16:13:27.11
CH.DIX.HHN. ML:1.3 0.000077379375 0.1024 AML other m 2020-11-27T16:13:27.39
GU.LSD.HHE. ML:0.7 0.00001595105 0.1792 AML other m 2020-11-27T16:13:29.08
GU.LSD.HHN. ML:0.2 0.000007142502 0.1536 AML other m 2020-11-27T16:13:29.24
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