Earthquake with magnitude of ML 1.4 on date 19-10-2021 and time 09:05:37 (Italy) in region 1 km NW Villeneuve (AO)

A magnitude ML 1.4 earthquake occured in region: 1 km NW Villeneuve (AO), on

  • 19-10-2021 07:05:37 (UTC)
  • 19-10-2021 09:05:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.708, 7.205 at 8 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
Villeneuve AO 1 1289 1289
Saint-Pierre AO 2 3165 4454
Introd AO 2 658 5112
Arvier AO 3 873 5985
Aymavilles AO 3 2086 8071
Saint-Nicolas AO 3 311 8382
Sarre AO 4 4927 13309
Avise AO 5 305 13614
Jovençan AO 6 736 14350
Gressan AO 7 3387 17737
Rhêmes-Saint-Georges AO 7 194 17931
Charvensod AO 10 2468 20399
Aosta AO 10 34390 54789
Gignod AO 11 1710 56499
La Salle AO 11 2087 58586
Roisan AO 12 1036 59622
Pollein AO 12 1569 61191
Saint-Christophe AO 13 3432 64623
Valsavarenche AO 13 161 64784
Etroubles AO 13 501 65285
Saint-Rhémy-en-Bosses AO 13 338 65623
Allein AO 13 229 65852
Saint-Oyen AO 13 203 66055
Valgrisenche AO 14 196 66251
Morgex AO 14 2104 68355
Doues AO 15 510 68865
Brissogne AO 16 1008 69873
Cogne AO 16 1417 71290
Valpelline AO 16 657 71947
Rhêmes-Notre-Dame AO 17 89 72036
Quart AO 17 4039 76075
Ollomont AO 18 157 76232
Pré-Saint-Didier AO 18 1050 77282
Saint-Marcel AO 19 1362 78644
La Thuile AO 20 761 79405

Municipalities with at least 50000 inhabitants

An earthquake occurred to
80 Km NW of Torino (890529 inhabitants)
87 Km NW of Moncalieri (57294 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.4 2021-10-19
07:05:37
45.7077 7.2052 8 2021-10-19
07:17:45
Sala Sismica INGV-Roma 96754281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 07:05:37 ± 0.17
Latitude 45.7077 ± 0.0099
Longitude 7.2052 ± 0.0155
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96754281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1198
Semi-minor axis of confidence ellipse (meter) 805
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 1200
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
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) 0.11781
Epicentral distance of station farthest from the epicenter (degree) 0.56028
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:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96754281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 07:17:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.TRAV.HHZ. 2021-10-19T07:05:53.43 0.3 undecidable manual S 117 0.4254 50 -0.27 70
CH.DIX.HHZ. 2021-10-19T07:05:52.37 0.3 undecidable manual S 21 0.3984 50 -0.51 67
GU.RSP.HHE. 2021-10-19T07:05:50.29 0.6 undecidable manual P 176 0.5603 50 0.93 36
GU.CIRO.HHZ. 2021-10-19T07:05:48.64 0.3 undecidable manual S 112 0.2743 105 -0.25 72
GU.TRAV.HHZ. 2021-10-19T07:05:47.44 0.3 negative manual P 117 0.4254 50 0.39 68
GU.LSD.HHZ. 2021-10-19T07:05:47.35 0.3 undecidable manual S 191 0.2527 106 -0.73 63
CH.DIX.HHZ. 2021-10-19T07:05:46.64 0.6 positive manual P 21 0.3984 50 0.07 49
GU.CIRO.HHZ. 2021-10-19T07:05:44.80 0.3 undecidable manual P 112 0.2743 105 0.53 68
GU.LSD.HHZ. 2021-10-19T07:05:43.90 0.1 negative manual P 191 0.2527 106 0.1 100
IV.MRGE.HHZ. 2021-10-19T07:05:43.14 0.3 undecidable manual S 302 0.1178 121 -0.15 76
IV.MRGE.HHZ. 2021-10-19T07:05:41.29 0.3 undecidable manual P 302 0.1178 121 0.26 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MRGE.HHE. ML:1.4 0.0003040256 0.0608 AML other m 2021-10-19T07:05:43.58
IV.MRGE.HHN. ML:1.6 0.00048712675 0.0576 AML other m 2021-10-19T07:05:43.34
GU.LSD.HHE. ML:1.4 0.00014744055 0.0576 AML other m 2021-10-19T07:05:47.29
GU.LSD.HHN. ML:1.2 8.3531315E-5 0.08 AML other m 2021-10-19T07:05:48.00
CH.DIX.HHE. ML:1.5 0.00010429205 0.2784 AML other m 2021-10-19T07:05:53.50
GU.TRAV.HHN. ML:1.2 5.185E-5 0.16 AML other m 2021-10-19T07:05:53.78
CH.DIX.HHN. ML:1.6 0.000120142145 0.2112 AML other m 2021-10-19T07:05:53.60
GU.TRAV.HHE. ML:1.2 4.265E-5 1.9 AML other m 2021-10-19T07:05:53.00
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