Earthquake with magnitude of ML 1.1 on date 17-01-2021 and time 02:59:45 (Italy) in region 5 km S Villar Focchiardo (TO)

A magnitude ML 1.1 earthquake occured in region: 5 km S Villar Focchiardo (TO), on

  • 17-01-2021 01:59:45 (UTC)
  • 17-01-2021 02:59:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.07, 7.23 at 7 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
Villar Focchiardo TO 5 2042 2042
Sant'Antonino di Susa TO 5 4306 6348
Coazze TO 5 3287 9635
Vaie TO 6 1458 11093
Borgone Susa TO 6 2229 13322
San Didero TO 7 551 13873
San Giorio di Susa TO 8 1024 14897
Condove TO 8 4638 19535
Chiusa di San Michele TO 8 1647 21182
Valgioie TO 9 951 22133
Bruzolo TO 9 1524 23657
Caprie TO 10 2086 25743
Giaveno TO 10 16455 42198
Bussoleno TO 10 6094 48292
Chianocco TO 10 1675 49967
Sant'Ambrogio di Torino TO 11 4755 54722
Mattie TO 11 687 55409
Roure TO 11 848 56257
Perosa Argentina TO 13 3285 59542
Avigliana TO 13 12516 72058
Villar Dora TO 13 2932 74990
Pomaretto TO 13 1009 75999
Inverso Pinasca TO 14 730 76729
Almese TO 14 6401 83130
Meana di Susa TO 14 826 83956
Rubiana TO 14 2400 86356
Pinasca TO 14 3051 89407
Fenestrelle TO 15 544 89951
Cumiana TO 15 7826 97777
Trana TO 15 3877 101654
Reano TO 16 1818 103472
Mompantero TO 16 659 104131
Buttigliera Alta TO 16 6419 110550
Susa TO 16 6466 117016
Usseaux TO 16 186 117202
Cantalupa TO 16 2553 119755
Villar Perosa TO 17 4092 123847
Perrero TO 17 659 124506
Gravere TO 18 692 125198
Frossasco TO 18 2864 128062
Sangano TO 18 3707 131769
Roletto TO 18 2009 133778
Rosta TO 18 4903 138681
Usseglio TO 18 209 138890
Lemie TO 18 179 139069
Pramollo TO 18 258 139327
Massello TO 19 51 139378
Villarbasse TO 19 3509 142887
Giaglione TO 19 631 143518
San Germano Chisone TO 19 1854 145372
San Pietro Val Lemina TO 19 1448 146820
Bruino TO 19 8639 155459
Val della Torre TO 20 3869 159328
Venaus TO 20 907 160235

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km W of Torino (890529 inhabitants)
36 Km W of Moncalieri (57294 inhabitants)
79 Km W of Asti (76202 inhabitants)
79 Km NW of Cuneo (56081 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 1.1 2021-01-17
01:59:45
45.07 7.23 7 2021-01-17
02:10:32
Sala Sismica INGV-Roma 86315201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-17 01:59:45 ± 0.23
Latitude 45.07 ± 0.01
Longitude 7.23 ± 0.01
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86315201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1051
Semi-minor axis of confidence ellipse (meter) 867
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 191
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
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) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.23562
Epicentral distance of station farthest from the epicenter (degree) 0.70956
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:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 86315201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-17 02:10:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MONC.HHZ. 2021-01-17T02:00:03.27 0.3 undecidable manual S 89 0.4901 50 -0.13 74
MN.BNI.HHZ. 2021-01-17T02:00:00.13 0.1 undecidable manual S 268 0.3921 50 -0.38 95
IV.MRGE.HHZ. 2021-01-17T01:59:59.93 0.3 undecidable manual P 350 0.7096 50 0.37 67
GU.LSD.HHZ. 2021-01-17T01:59:59.84 0.3 undecidable manual S 350 0.3948 50 -0.75 63
GU.RRL.HHZ. 2021-01-17T01:59:58.73 0.1 undecidable manual S 245 0.3462 100 -0.25 98
GU.PZZ.HHZ. 2021-01-17T01:59:57.64 0.1 undecidable manual P 188 0.5693 50 0.47 90
GU.CIRO.HHZ. 2021-01-17T01:59:57.60 0.1 undecidable manual P 24 0.581 50 0.23 94
IV.MONC.HHZ. 2021-01-17T01:59:55.84 0.1 undecidable manual P 89 0.4901 50 0.03 100
GU.LSD.HHZ. 2021-01-17T01:59:54.03 0.1 undecidable manual P 350 0.3948 50 -0.16 99
GU.BHB.HHZ. 2021-01-17T01:59:54.49 0.3 undecidable manual S 175 0.2356 104 -0.32 74
MN.BNI.HHZ. 2021-01-17T01:59:54.76 0.1 undecidable manual P 268 0.3921 50 0.62 88
GU.RRL.HHZ. 2021-01-17T01:59:53.73 0.1 undecidable manual P 245 0.3462 100 0.47 94
GU.BHB.HHZ. 2021-01-17T01:59:50.50 0.1 undecidable manual P 175 0.2356 104 -0.35 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHE. ML:1 5.425E-5 0.7 AML other m 2021-01-17T01:59:54.02
GU.BHB.HHN. ML:1.1 8.165E-5 0.94 AML other m 2021-01-17T01:59:54.57
GU.RRL.HHE. ML:1 3.575E-5 0.24 AML other m 2021-01-17T01:59:59.27
GU.RRL.HHN. ML:1.1 4.95E-5 0.86 AML other m 2021-01-17T01:59:59.08
GU.LSD.HHE. ML:1.2 4.48E-5 1.3 AML other m 2021-01-17T02:00:00.16
GU.LSD.HHN. ML:1.2 4.53E-5 0.78 AML other m 2021-01-17T02:00:00.58
GU.PZZ.HHN. ML:1.3 3.275E-5 1.38 AML other m 2021-01-17T02:00:06.92
GU.PZZ.HHE. ML:1.3 3.94E-5 1.1 AML other m 2021-01-17T02:00:07.74
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