Earthquake with magnitude of ML 1.2 on date 29-12-2020 and time 01:02:20 (Italy) in region 3 km SW Monterosso Grana (CN)

A magnitude ML 1.2 earthquake occured in region: 3 km SW Monterosso Grana (CN), on

  • 29-12-2020 00:02:20 (UTC)
  • 29-12-2020 01:02:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3880, 7.2940 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
Monterosso Grana CN 3 505 505
Pradleves CN 4 250 755
Castelmagno CN 7 66 821
Valgrana CN 7 786 1607
Demonte CN 8 2003 3610
Montemale di Cuneo CN 8 241 3851
Valloriate CN 9 109 3960
Rittana CN 10 109 4069
Cartignano CN 10 190 4259
Aisone CN 10 248 4507
Dronero CN 11 7035 11542
Roccabruna CN 11 1585 13127
Gaiola CN 11 582 13709
Moiola CN 11 234 13943
Caraglio CN 11 6836 20779
Bernezzo CN 11 4104 24883
San Damiano Macra CN 12 430 25313
Villar San Costanzo CN 13 1547 26860
Roccasparvera CN 13 741 27601
Vinadio CN 13 644 28245
Cervasca CN 14 5013 33258
Celle di Macra CN 14 100 33358
Vignolo CN 14 2600 35958
Valdieri CN 15 935 36893
Macra CN 16 59 36952
Borgo San Dalmazzo CN 17 12468 49420
Roccavione CN 17 2761 52181
Marmora CN 18 68 52249
Valmala CN 18 52 52301
Sambuco CN 18 92 52393
Entracque CN 18 774 53167
Roaschia CN 18 107 53274
Canosio CN 19 80 53354
Stroppo CN 19 103 53457
Melle CN 20 292 53749

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Cuneo (56081 inhabitants)
74 Km NW of Sanremo (54807 inhabitants)
75 Km SW of Moncalieri (57294 inhabitants)
82 Km SW of Torino (890529 inhabitants)
92 Km SW of Asti (76202 inhabitants)
95 Km W of Savona (61345 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
Reviewed
Rev100
ML 1.2 2020-12-29
00:02:20
44.3883 7.2945 8 2020-12-29
00:11:59
Sala Sismica INGV-Roma 85814601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-29 00:02:20 ± 0.08
Latitude 44.3883 ± 0.0072
Longitude 7.2945 ± 0.0126
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85814601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1170
Semi-minor axis of confidence ellipse (meter) 233
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.14479
Epicentral distance of station farthest from the epicenter (degree) 0.90472
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 85814601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-29 00:11:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PCP.HHE. 2020-12-29T00:02:50.93 0.6 undecidable manual S 80 100.4217 50 0.75 36
MN.BNI.HHE. 2020-12-29T00:02:46.84 0.6 undecidable manual S 327 88.245 50 -0.07 44
IV.QLNO.HHE. 2020-12-29T00:02:45.95 0.6 undecidable manual S 95 83.6496 50 0.24 43
GU.CANO.HHE. 2020-12-29T00:02:43.46 0.6 undecidable manual S 105 77.4669 50 -0.59 40
GU.RORO.HHE. 2020-12-29T00:02:41.93 0.6 undecidable manual S 116 68.5758 50 0.26 44
GU.PCP.HHE. 2020-12-29T00:02:37.49 0.6 undecidable manual P 80 100.4217 50 -0.06 43
FR.SAOF.HHZ.00 2020-12-29T00:02:36.43 0.6 undecidable manual S 155 49.1175 50 -0.06 48
GU.BHB.HNZ. 2020-12-29T00:02:36.31 0.6 undecidable manual S 357 49.617 50 -0.31 45
MN.BNI.HHE. 2020-12-29T00:02:35.94 0.6 undecidable manual P 327 88.245 50 0.28 42
IV.QLNO.HHE. 2020-12-29T00:02:35.49 0.6 undecidable manual P 95 83.6496 50 0.52 40
GU.GBOS.HHZ. 2020-12-29T00:02:34.97 0.6 undecidable manual S 110 46.2204 50 -0.74 40
GU.CANO.HHE. 2020-12-29T00:02:34.39 0.6 undecidable manual P 105 77.4669 50 0.38 42
GU.RRL.HHE. 2020-12-29T00:02:33.08 0.6 undecidable manual P 326 71.1732 50 0.04 46
GU.RORO.HHE. 2020-12-29T00:02:32.71 1.0 undecidable manual P 116 68.5758 50 0.08 23
GU.BHB.HNZ. 2020-12-29T00:02:29.31 0.3 undecidable manual P 357 49.617 50 -0.41 66
FR.SAOF.HHZ.00 2020-12-29T00:02:29.81 0.3 undecidable manual P 155 49.1175 50 0.17 70
GU.GBOS.HHZ. 2020-12-29T00:02:28.99 0.6 undecidable manual P 110 46.2204 50 -0.21 47
GU.PZZ.HHZ. 2020-12-29T00:02:27.50 0.3 undecidable manual S 313 19.2696 113 -0.09 75
GU.ENR.HHZ. 2020-12-29T00:02:27.46 0.3 undecidable manual S 151 20.1687 112 -0.41 70
GU.STV.HHZ. 2020-12-29T00:02:26.44 0.3 undecidable manual S 171 16.0728 117 -0.13 75
GU.PZZ.HHZ. 2020-12-29T00:02:24.60 0.1 negative manual P 313 19.2696 113 0.09 100
GU.ENR.HHZ. 2020-12-29T00:02:24.74 0.3 positive manual P 151 20.1687 112 0.07 75
GU.STV.HHZ. 2020-12-29T00:02:24.24 0.1 undecidable manual P 171 16.0728 117 0.32 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:0.8 0.000053674099999999995 0.2 AML other m 2020-12-29T00:02:27.18
GU.STV.HHN. ML:0.8 0.00006293214499999999 0.12 AML other m 2020-12-29T00:02:27.27
GU.PZZ.HHE. ML:1.2 0.0001307122 0.14 AML other m 2020-12-29T00:02:28.51
GU.PZZ.HHN. ML:1.5 0.00023211445000000003 0.12 AML other m 2020-12-29T00:02:27.89
GU.ENR.HHE. ML:1.6 0.0002800601 0.04 AML other m 2020-12-29T00:02:28.14
GU.ENR.HHN. ML:1.6 0.00026788615 0.06 AML other m 2020-12-29T00:02:28.09
GU.GBOS.HHE. ML:1.1 0.000038657805 1.96 AML other m 2020-12-29T00:02:35.29
GU.GBOS.HHN. ML:1.1 0.000040288325 1.18 AML other m 2020-12-29T00:02:35.37
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