Earthquake with magnitude of ML 1.2 on date 23-11-2020 and time 12:19:29 (UTC) in region 2 km SW San Damiano Macra (CN)

A magnitude ML 1.2 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) 44.47, 7.24 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 7 66 1095
Roccabruna CN 8 1585 2680
Stroppo CN 10 103 2783
Monterosso Grana CN 10 505 3288
Dronero CN 10 7035 10323
Montemale di Cuneo CN 11 241 10564
Frassino CN 11 265 10829
Villar San Costanzo CN 11 1547 12376
Marmora CN 12 68 12444
Valmala CN 12 52 12496
Melle CN 12 292 12788
Canosio CN 13 80 12868
Sampeyre CN 13 1022 13890
Valgrana CN 13 786 14676
Elva CN 14 97 14773
Prazzo CN 15 170 14943
Brossasco CN 15 1084 16027
Venasca CN 16 1437 17464
Caraglio CN 16 6836 24300
Isasca CN 17 76 24376
Rossana CN 17 908 25284
Aisone CN 18 248 25532
Demonte CN 18 2003 27535
Bernezzo CN 18 4104 31639
Valloriate CN 19 109 31748
Rittana CN 19 109 31857
Casteldelfino CN 19 157 32014
Vinadio CN 19 644 32658
Busca CN 19 10181 42839
Gambasca CN 20 371 43210
Brondello CN 20 290 43500
Sambuco CN 20 92 43592
Acceglio CN 20 162 43754
Martiniana Po CN 20 734 44488

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Cuneo (56081 inhabitants)
69 Km SW of Moncalieri (57294 inhabitants)
75 Km SW of Torino (890529 inhabitants)
85 Km NW of Sanremo (54807 inhabitants)
90 Km SW of Asti (76202 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.2 2020-11-23
12:19:29
44.47 7.24 12 2021-02-26
14:56:07
Bollettino Sismico Italiano INGV 84979551
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 ± 0.16
Latitude 44.47 ± 0.01
Longitude 7.24 ± 0.02
Depth (km) 12 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84979551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1915
Semi-minor axis of confidence ellipse (meter) 1278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 1910
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.76173
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 84979551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-01 00:18:11

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
GU.CANO.HHZ. 2020-11-23T12:19:55.03 1.0 undecidable manual S 110 0.7617 91 0.26 22
GU.RORO.HHE. 2020-11-23T12:19:52.37 0.3 undecidable manual S 121 0.6934 91 -0.38 61
GU.RRL.HHE. 2020-11-23T12:19:47.86 0.6 undecidable manual S 325 0.5495 91 -0.63 39
GU.GBOS.HHZ. 2020-11-23T12:19:46.47 0.6 undecidable manual S 118 0.4883 92 -0.19 44
GU.CANO.HHZ. 2020-11-23T12:19:44.60 0.3 undecidable manual P 110 0.7617 91 0.41 63
GU.RSP.HNN. 2020-11-23T12:19:43.47 0.6 undecidable manual P 2 0.6754 91 0.76 39
GU.RORO.HHE. 2020-11-23T12:19:43.11 0.1 undecidable manual P 121 0.6934 91 0.08 90
GU.BHB.HHE. 2020-11-23T12:19:42.35 0.6 undecidable manual S 3 0.3624 92 -0.6 40
GU.RRL.HHE. 2020-11-23T12:19:40.72 0.3 undecidable manual P 325 0.5495 91 0.15 69
GU.ENR.HHZ. 2020-11-23T12:19:39.76 0.6 undecidable manual S 152 0.2752 94 -0.61 41
GU.GBOS.HHZ. 2020-11-23T12:19:39.76 0.1 undecidable manual P 118 0.4883 92 0.25 92
GU.BHB.HHE. 2020-11-23T12:19:37.35 0.3 undecidable manual P 3 0.3624 92 -0.02 71
GU.ENR.HHZ. 2020-11-23T12:19:35.78 0.1 undecidable manual P 152 0.2752 94 -0.1 95
GU.PZZ.HHE. 2020-11-23T12:19:35.06 0.6 undecidable manual S 291 0.0935 126 -0.12 50
GU.PZZ.HHE. 2020-11-23T12:19:33.00 0.1 undecidable manual P 291 0.0935 126 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:1.2 8.19E-5 0.74 AML other m 2020-11-23T12:19:40.95
GU.GBOS.HHE. ML:0.9 2.242466E-5 0.6432 AML other m 2020-11-23T12:19:47.30
IV.IMI.HHE. ML:1.5 4.471722E-5 1.056 AML other m 2020-11-23T12:19:52.47
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.HHE. ML:0 3.615E-5 0.76 AML other m 2020-11-23T12:20:47.58
GU.GSCL.HHN. ML:2.4 4.525E-5 0.5 AML other m 2020-11-23T12:20:46.50
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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