Earthquake with magnitude of ML 1.2 on date 23-11-2020 and time 08:41:52 (Italy) in region 2 km SW Champdepraz (AO)

A magnitude ML 1.2 earthquake occured in region: 2 km SW Champdepraz (AO), on

  • 23-11-2020 07:41:52 (UTC)
  • 23-11-2020 08:41:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.67, 7.64 at 9 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
Champdepraz AO 2 712 712
Issogne AO 4 1400 2112
Verrès AO 4 2696 4808
Montjovet AO 5 1801 6609
Champorcher AO 5 388 6997
Challand-Saint-Victor AO 6 564 7561
Arnad AO 7 1273 8834
Pontboset AO 8 185 9019
Emarèse AO 8 226 9245
Pontey AO 9 817 10062
Challand-Saint-Anselme AO 9 751 10813
Saint-Vincent AO 9 4660 15473
Châtillon AO 9 4772 20245
Hône AO 10 1166 21411
Bard AO 11 119 21530
Chambave AO 11 931 22461
Saint-Denis AO 12 378 22839
Donnas AO 12 2563 25402
Brusson AO 12 897 26299
Verrayes AO 14 1302 27601
Fénis AO 14 1813 29414
Perloz AO 14 477 29891
Pont-Saint-Martin AO 14 3840 33731
Antey-Saint-André AO 16 602 34333
Nus AO 16 2984 37317
Torgnon AO 16 558 37875
La Magdeleine AO 16 109 37984
Carema TO 16 774 38758
Lillianes AO 16 462 39220
Issime AO 17 423 39643
Saint-Marcel AO 17 1362 41005
Ayas AO 17 1401 42406
Fontainemore AO 17 440 42846
Quincinetto TO 17 1031 43877
Valprato Soana TO 18 108 43985
Gressoney-Saint-Jean AO 19 807 44792
Chamois AO 19 97 44889
Quart AO 19 4039 48928
Gaby AO 19 468 49396
Traversella TO 20 343 49739
Brissogne AO 20 1008 50747
Tavagnasco TO 20 791 51538
Settimo Vittone TO 20 1560 53098
Ronco Canavese TO 20 314 53412

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km N of Torino (890529 inhabitants)
74 Km N of Moncalieri (57294 inhabitants)
80 Km W of Novara (104380 inhabitants)
90 Km W of Gallarate (53343 inhabitants)
93 Km W of Varese (80799 inhabitants)
95 Km W of Busto Arsizio (83106 inhabitants)
96 Km NW of Asti (76202 inhabitants)
100 Km W of Legnano (60262 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2020-11-23
07:41:52
45.67 7.64 9 2020-11-23
07:45:37
Sala Sismica INGV-Roma 84962611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-23 07:41:52 ± 0.25
Latitude 45.67 ± 0.01
Longitude 7.64 ± 0.02
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84962611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1773
Semi-minor axis of confidence ellipse (meter) 1444
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 1770
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 118
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) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.58276
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 84962611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-23 07:45:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RSP.HHZ. 2020-11-23T07:42:12.02 0.6 undecidable manual S 207 0.5828 50 -0.28 45
GU.LSD.HHZ. 2020-11-23T07:42:06.22 0.6 undecidable manual S 240 0.4119 50 -1.02 35
GU.RSP.HHZ. 2020-11-23T07:42:04.58 0.1 undecidable manual P 207 0.5828 50 0.8 75
CH.DIX.HHZ. 2020-11-23T07:42:01.07 0.3 negative manual P 338 0.4434 50 -0.32 68
IV.MRGE.HHZ. 2020-11-23T07:42:01.34 0.6 undecidable manual P 284 0.4182 50 0.37 45
GU.LSD.HHZ. 2020-11-23T07:42:00.91 0.1 undecidable manual P 240 0.4119 50 0.05 97
GU.TRAV.HHZ. 2020-11-23T07:41:58.94 0.6 undecidable manual S 155 0.1718 116 -0.54 45
GU.SATI.HHZ. 2020-11-23T07:41:57.78 1.0 positive manual P 37 0.2599 108 -0.44 23
GU.CIRO.HHZ. 2020-11-23T07:41:56.44 0.6 undecidable manual S 218 0.0845 135 -0.25 49
GU.TRAV.HHZ. 2020-11-23T07:41:56.50 0.1 positive manual P 155 0.1718 116 0.12 100
GU.CIRO.HHZ. 2020-11-23T07:41:55.01 0.1 undecidable manual P 218 0.0845 135 0.24 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CIRO.HHE. ML:1.1 0.0001925 0.94 AML other m 2020-11-23T07:41:56.51
GU.CIRO.HHN. ML:1.2 0.0001945 0.12 AML other m 2020-11-23T07:41:56.64
GU.TRAV.HHE. ML:1.1 9.35E-5 1.4 AML other m 2020-11-23T07:41:59.20
GU.TRAV.HHN. ML:1.1 0.000109 0.24 AML other m 2020-11-23T07:41:59.50
GU.RSP.HHE. ML:1.2 3.145E-5 0.16 AML other m 2020-11-23T07:42:13.53
GU.RSP.HHN. ML:1.2 3.185E-5 1.26 AML other m 2020-11-23T07:42:13.68
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download