Earthquake with magnitude of ML 1.0 on date 26-10-2021 and time 09:48:50 (Italy) in region 3 km S Robilante (CN)

A magnitude ML 1.0 earthquake occured in region: 3 km S Robilante (CN), on

  • 26-10-2021 07:48:50 (UTC)
  • 26-10-2021 09:48:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.272, 7.506 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
Robilante CN 3 2306 2306
Vernante CN 4 1178 3484
Roaschia CN 4 107 3591
Roccavione CN 5 2761 6352
Borgo San Dalmazzo CN 7 12468 18820
Boves CN 8 9835 28655
Valdieri CN 9 935 29590
Entracque CN 9 774 30364
Roccasparvera CN 9 741 31105
Limone Piemonte CN 10 1485 32590
Vignolo CN 10 2600 35190
Gaiola CN 11 582 35772
Moiola CN 11 234 36006
Peveragno CN 11 5543 41549
Rittana CN 12 109 41658
Valloriate CN 13 109 41767
Cervasca CN 13 5013 46780
Cuneo CN 14 56081 102861
Bernezzo CN 14 4104 106965
Chiusa di Pesio CN 15 3676 110641
Beinette CN 15 3423 114064
Demonte CN 17 2003 116067
Caraglio CN 17 6836 122903
Valgrana CN 18 786 123689
Pianfei CN 20 2202 125891
Roccaforte Mondovì CN 20 2085 127976

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km S of Cuneo (56081 inhabitants)
55 Km NW of Sanremo (54807 inhabitants)
78 Km W of Savona (61345 inhabitants)
82 Km S of Moncalieri (57294 inhabitants)
89 Km SW of Asti (76202 inhabitants)
90 Km S of Torino (890529 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 1.0 2021-10-26
07:48:50
44.2725 7.5057 8 2021-10-26
08:10:29
Sala Sismica INGV-Roma 96997361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 07:48:50 ± 0.14
Latitude 44.2725 ± 0.0135
Longitude 7.5057 ± 0.0088
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 96997361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1368
Semi-minor axis of confidence ellipse (meter) 662
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 185
Circular confidence region, given by single value of horizontal uncertainty (meter) 1370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 0.58816
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

Field Value
Value 1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 96997361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 08:10:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHE. 2021-10-26T07:49:10.50 0.6 undecidable manual S 343 0.5882 50 -0.83 37
GU.PZZ.HHZ. 2021-10-26T07:49:04.73 0.6 undecidable manual S 310 0.3633 50 0.07 49
GU.BHB.HHE. 2021-10-26T07:49:02.96 0.6 undecidable manual P 343 0.5882 50 0.35 44
FR.SAOF.HHZ.00 2021-10-26T07:49:01.97 0.6 undecidable manual S 173 0.2887 104 -0.17 49
GU.GBOS.HHZ. 2021-10-26T07:49:00.45 0.3 undecidable manual S 97 0.241 106 0.07 75
GU.PZZ.HHZ. 2021-10-26T07:48:58.90 0.6 undecidable manual P 310 0.3633 50 0.14 48
FR.SAOF.HHZ.00 2021-10-26T07:48:57.51 0.6 undecidable manual P 173 0.2887 104 0.21 48
GU.STV.HHZ. 2021-10-26T07:48:57.30 0.6 undecidable manual S 258 0.1313 118 0.86 40
GU.GBOS.HHZ. 2021-10-26T07:48:56.37 0.3 positive manual P 97 0.241 106 0.08 75
GU.ENR.HHZ. 2021-10-26T07:48:54.22 0.3 undecidable manual S 235 0.0764 133 -0.47 71
GU.STV.HHZ. 2021-10-26T07:48:54.30 0.6 positive manual P 258 0.1313 118 0.29 49
GU.ENR.HHZ. 2021-10-26T07:48:52.78 0.1 positive manual P 235 0.0764 133 -0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHN. ML:1.1 0.0002135 0.46 AML other m 2021-10-26T07:48:55.18
GU.ENR.HHE. ML:1 0.000163 0.42 AML other m 2021-10-26T07:48:55.43
GU.GBOS.HHE. ML:1 6.145E-5 1.84 AML other m 2021-10-26T07:48:57.04
GU.GBOS.HHN. ML:1.1 7.04E-5 1.52 AML other m 2021-10-26T07:49:01.16
FR.SAOF.HHE.00 ML:0.9 4.155E-5 1.04 AML other m 2021-10-26T07:49:04.70
FR.SAOF.HHN.00 ML:0.8 3.135E-5 1.32 AML other m 2021-10-26T07:49:12.77
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