Earthquake with magnitude of ML 1.5 on date 23-11-2020 and time 13:19:29 (Italy) in region 2 km SW San Damiano Macra (CN)

A magnitude ML 1.5 earthquake occured in region: 2 km SW San Damiano Macra (CN), on

  • 23-11-2020 12:19:29 (UTC)
  • 23-11-2020 13:19:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.48, 7.24 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
San Damiano Macra CN 2 430 430
Cartignano CN 4 190 620
Celle di Macra CN 5 100 720
Macra CN 6 59 779
Pradleves CN 7 250 1029
Castelmagno CN 8 66 1095
Roccabruna CN 8 1585 2680
Stroppo CN 10 103 2783
Dronero CN 10 7035 9818
Monterosso Grana CN 10 505 10323
Frassino CN 11 265 10588
Villar San Costanzo CN 11 1547 12135
Valmala CN 11 52 12187
Montemale di Cuneo CN 11 241 12428
Melle CN 11 292 12720
Marmora CN 12 68 12788
Sampeyre CN 12 1022 13810
Canosio CN 13 80 13890
Valgrana CN 13 786 14676
Elva CN 14 97 14773
Brossasco CN 14 1084 15857
Prazzo CN 15 170 16027
Venasca CN 16 1437 17464
Caraglio CN 16 6836 24300
Isasca CN 17 76 24376
Rossana CN 17 908 25284
Bernezzo CN 18 4104 29388
Aisone CN 18 248 29636
Demonte CN 19 2003 31639
Valloriate CN 19 109 31748
Casteldelfino CN 19 157 31905
Busca CN 19 10181 42086
Rittana CN 19 109 42195
Gambasca CN 19 371 42566
Brondello CN 19 290 42856
Martiniana Po CN 19 734 43590
Vinadio CN 20 644 44234
Sanfront CN 20 2395 46629
Piasco CN 20 2774 49403
Acceglio CN 20 162 49565

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Cuneo (56081 inhabitants)
68 Km SW of Moncalieri (57294 inhabitants)
75 Km SW of Torino (890529 inhabitants)
85 Km NW of Sanremo (54807 inhabitants)
89 Km SW of Asti (76202 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 1.5 2020-11-23
12:19:29
44.48 7.24 12 2020-11-23
12:29:56
Sala Sismica INGV-Roma 84965491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-23 12:19:29 ± 0.14
Latitude 44.48 ± 0.01
Longitude 7.24 ± 0.02
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84965491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1489
Semi-minor axis of confidence ellipse (meter) 885
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 1490
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.76083
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.6
Num. used stations 6
Type of magnitude ML
Reference to an origin 84965491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-23 12:29:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2020-11-23T12:21:21.60 3.0 undecidable manual Sn 0.1 0
IV.PTCC.HHZ. 2020-11-23T12:21:03.78 3.0 positive manual Pg 18.040001 0
IV.APEC.HHZ. 2020-11-23T12:20:44.19 3.0 undecidable manual Pg 14.17 0
GU.GSCL.HHZ. 2020-11-23T12:20:41.70 3.0 undecidable manual Sn 0.81 0
IV.CSP1.EHZ. 2020-11-23T12:20:39.78 3.0 undecidable manual Pn 0.65 0
IV.SARZ.HHZ. 2020-11-23T12:20:16.40 3.0 undecidable manual Sn -1.16 0
GU.SARZ.HHZ. 2020-11-23T12:20:07.91 3.0 undecidable manual P 0
GU.RNCA.HHZ. 2020-11-23T12:19:57.87 3.0 undecidable manual Pg 0
GU.ROTM.HHZ. 2020-11-23T12:19:54.01 3.0 undecidable manual S 0
GU.RORO.HHE. 2020-11-23T12:19:52.37 0.3 undecidable manual S 122 0.6934 91 -0.36 63
GU.RRL.HHE. 2020-11-23T12:19:48.06 0.6 undecidable manual S 324 0.5468 91 -0.34 43
GU.ROTM.HHZ. 2020-11-23T12:19:47.15 3.0 undecidable manual P 0
GU.GBOS.HHZ. 2020-11-23T12:19:46.55 0.6 undecidable manual S 119 0.4874 92 -0.09 46
GU.CANO.HHZ. 2020-11-23T12:19:44.56 0.1 undecidable manual P 110 0.7608 91 0.4 82
GU.RORO.HHE. 2020-11-23T12:19:43.11 0.1 undecidable manual P 122 0.6934 91 0.1 88
GU.BHB.HHE. 2020-11-23T12:19:42.35 0.6 undecidable manual S 2 0.3579 93 -0.45 42
GU.RRL.HHE. 2020-11-23T12:19:40.71 0.1 undecidable manual P 324 0.5468 91 0.2 89
IV.IMI.HHZ. 2020-11-23T12:19:40.36 3.0 undecidable manual P -0.18 0
GU.ENR.HHZ. 2020-11-23T12:19:39.76 0.6 undecidable manual S 153 0.2815 94 -0.77 41
GU.GBOS.HHZ. 2020-11-23T12:19:39.81 0.3 negative manual P 119 0.4874 92 0.31 66
GU.BHB.HHE. 2020-11-23T12:19:37.39 0.1 undecidable manual P 2 0.3579 93 0.11 96
GU.PZZ.HHE. 2020-11-23T12:19:35.06 0.6 undecidable manual S 288 0.0944 126 -0.14 49
GU.ENR.HHZ. 2020-11-23T12:19:35.75 1.0 undecidable manual P 153 0.2815 94 -0.22 24
GU.PZZ.HHE. 2020-11-23T12:19:33.00 0.1 undecidable manual P 288 0.0944 126 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GSCL.HHE. ML:2.3 3.615E-5 0.76 AML other m 2020-11-23T12:20:47.58
GU.ENR.HHE. ML:1.2 8.19E-5 0.74 AML other m 2020-11-23T12:19:40.95
GU.ROTM.HHE. ML:3.1 0.00142 0.08 AML other m 2020-11-23T12:20:05.49
GU.ROTM.HHN. ML:3.2 0.001565 0.94 AML other m 2020-11-23T12:20:11.19
GU.GSCL.HHN. ML:2.4 4.525E-5 0.5 AML other m 2020-11-23T12:20:46.50
GU.GBOS.HHE. ML:0.9 2.242466E-5 1.3568 AML other m 2020-11-23T12:19:47.30
IV.IMI.HHE. ML:1.5 4.471722E-5 17.056 AML other m 2020-11-23T12:19:44.47
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