Earthquake with magnitude of ML 1.3 on date 26-10-2021 and time 12:54:09 (UTC) in region 3 km S Sampeyre (CN)

A magnitude ML 1.3 earthquake occured in region: 3 km S Sampeyre (CN), on

  • 26-10-2021 12:54:09 (UTC)
  • 26-10-2021 14:54:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.554, 7.185 at 12 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
Sampeyre CN 3 1022 1022
Macra CN 6 59 1081
Stroppo CN 7 103 1184
Frassino CN 8 265 1449
Elva CN 8 97 1546
Celle di Macra CN 8 100 1646
San Damiano Macra CN 9 430 2076
Casteldelfino CN 10 157 2233
Melle CN 11 292 2525
Cartignano CN 12 190 2715
Marmora CN 13 68 2783
Prazzo CN 13 170 2953
Valmala CN 13 52 3005
Canosio CN 14 80 3085
Bellino CN 14 109 3194
Oncino CN 14 76 3270
Brossasco CN 14 1084 4354
Pontechianale CN 15 179 4533
Sanfront CN 15 2395 6928
Roccabruna CN 15 1585 8513
Gambasca CN 16 371 8884
Ostana CN 16 83 8967
Isasca CN 16 76 9043
Castelmagno CN 16 66 9109
Crissolo CN 16 168 9277
Paesana CN 17 2784 12061
Martiniana Po CN 17 734 12795
Pradleves CN 17 250 13045
Venasca CN 17 1437 14482
Rifreddo CN 17 1078 15560
Dronero CN 17 7035 22595
Villar San Costanzo CN 17 1547 24142
Acceglio CN 18 162 24304
Brondello CN 18 290 24594
Monterosso Grana CN 20 505 25099
Montemale di Cuneo CN 20 241 25340
Revello CN 20 4262 29602
Rossana CN 20 908 30510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NW of Cuneo (56081 inhabitants)
64 Km SW of Moncalieri (57294 inhabitants)
70 Km SW of Torino (890529 inhabitants)
89 Km W of Asti (76202 inhabitants)
94 Km NW of Sanremo (54807 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 1.3 2021-10-26
12:54:09
44.5535 7.1848 12 2021-10-26
13:03:52
Sala Sismica INGV-Roma 97003041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 12:54:09 ± 0.1
Latitude 44.5535 ± 0.0054
Longitude 7.1848 ± 0.0101
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97003041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 941
Semi-minor axis of confidence ellipse (meter) 396
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 940
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.85975
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 97003041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 13:03:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.QLNO.HHZ. 2021-10-26T12:54:37.84 0.6 undecidable manual S 105 0.8598 90 0.33 41
GU.IMI.HHZ. 2021-10-26T12:54:36.02 0.6 undecidable manual S 141 0.8184 90 -0.28 42
GU.RORO.HHE. 2021-10-26T12:54:34.18 0.6 undecidable manual S 125 0.7689 90 -0.65 38
IV.QLNO.HHZ. 2021-10-26T12:54:26.42 0.6 undecidable manual P 105 0.8598 90 0.71 37
GU.IMI.HHZ. 2021-10-26T12:54:25.43 0.3 undecidable manual P 141 0.8184 90 0.42 61
GU.RRL.HHZ. 2021-10-26T12:54:25.93 0.6 undecidable manual S 323 0.4623 91 0.2 47
GU.RORO.HHE. 2021-10-26T12:54:24.35 0.6 undecidable manual P 125 0.7689 90 0.19 43
GU.ENR.HHZ. 2021-10-26T12:54:22.49 0.6 undecidable manual S 153 0.3642 91 -0.35 46
GU.RSP.HHZ. 2021-10-26T12:54:20.88 3.0 negative manual P 0.99 0
GU.STV.HHZ. 2021-10-26T12:54:20.97 0.3 undecidable manual S 162 0.3247 91 -0.69 63
GU.GBOS.HHZ. 2021-10-26T12:54:20.66 0.3 undecidable manual P 123 0.5621 91 0.04 70
GU.BHB.HHZ. 2021-10-26T12:54:19.92 0.3 undecidable manual S 11 0.2869 91 -0.63 61
GU.RRL.HHZ. 2021-10-26T12:54:19.19 0.3 undecidable manual P 323 0.4623 91 0.28 69
GU.ENR.HHZ. 2021-10-26T12:54:17.27 0.1 undecidable manual P 153 0.3642 91 0.03 97
GU.STV.HHZ. 2021-10-26T12:54:16.62 0.1 undecidable manual P 162 0.3247 91 0.07 97
GU.BHB.HHZ. 2021-10-26T12:54:15.84 0.1 undecidable manual P 11 0.2869 91 -0.08 96
GU.PZZ.HHZ. 2021-10-26T12:54:14.09 0.3 undecidable manual S 226 0.0683 135 -0.23 76
GU.PZZ.HHZ. 2021-10-26T12:54:12.44 0.1 positive manual P 226 0.0683 135 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.6 0.0005925 0.44 AML other m 2021-10-26T12:54:14.31
GU.PZZ.HHE. ML:1.7 0.000661 0.24 AML other m 2021-10-26T12:54:14.19
GU.BHB.HHN. ML:1 3.93E-5 0.6 AML other m 2021-10-26T12:54:20.12
GU.BHB.HHE. ML:1 5.05E-5 1.26 AML other m 2021-10-26T12:54:20.77
GU.GBOS.HHE. ML:1.1 2.658625E-5 0.7232 AML other m 2021-10-26T12:54:29.08
GU.ENR.HHN. ML:1.4 9.255E-5 0.08 AML other m 2021-10-26T12:54:22.77
GU.ENR.HHE. ML:1.4 8.095E-5 0.98 AML other m 2021-10-26T12:54:23.51
GU.STV.HHE. ML:0.9 2.79628E-5 0.4992 AML other m 2021-10-26T12:54:22.06
GU.STV.HHN. ML:0.9 2.9025765E-5 0.16 AML other m 2021-10-26T12:54:21.71
GU.IMI.HHE. ML:1.3 2.65155036E-5 0.96 AML other m 2021-10-26T12:54:37.16
GU.IMI.HHN. ML:1.5 3.2662905E-5 1.6 AML other m 2021-10-26T12:54:37.16
IV.QLNO.HHE. ML:1.3 1.8879279E-5 0.1792 AML other m 2021-10-26T12:54:39.12
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