Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 02-12-2019 and time 09:06:22 (Italy) in region 3 km SW San Damiano Macra (CN)

A magnitude ML 1.4 earthquake occured in region: 3 km SW San Damiano Macra (CN), on

  • 02-12-2019 08:06:22 (UTC)
  • 02-12-2019 09:06:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.46, 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.

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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 3 430 430
Cartignano CN 4 190 620
Celle di Macra CN 5 100 720
Macra CN 6 59 779
Pradleves CN 6 250 1029
Castelmagno CN 6 66 1095
Roccabruna CN 8 1585 2680
Monterosso Grana CN 9 505 3185
Stroppo CN 10 103 3288
Dronero CN 10 7035 10323
Montemale di Cuneo CN 11 241 10564
Marmora CN 11 68 10632
Villar San Costanzo CN 12 1547 12179
Frassino CN 12 265 12444
Canosio CN 12 80 12524
Valmala CN 13 52 12576
Melle CN 13 292 12868
Valgrana CN 13 786 13654
Sampeyre CN 13 1022 14676
Elva CN 14 97 14773
Prazzo CN 15 170 14943
Brossasco CN 15 1084 16027
Caraglio CN 16 6836 22863
Venasca CN 17 1437 24300
Aisone CN 17 248 24548
Demonte CN 17 2003 26551
Valloriate CN 18 109 26660
Rossana CN 18 908 27568
Bernezzo CN 18 4104 31672
Isasca CN 18 76 31748
Rittana CN 18 109 31857
Vinadio CN 18 644 32501
Sambuco CN 19 92 32593
Casteldelfino CN 19 157 32750
Acceglio CN 20 162 32912
Busca CN 20 10181 43093
Gaiola CN 20 582 43675

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Cuneo (56081 inhabitants)
69 Km SW of Moncalieri (57294 inhabitants)
76 Km SW of Torino (890529 inhabitants)
84 Km NW of Sanremo (54807 inhabitants)
91 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 1.4 2019-12-02
08:06:22		 44.46 7.24 13 2019-12-02
08:15:23		 Sala Sismica INGV-Roma 74241951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-02 08:06:22 ± 0.12
Latitude 44.46 ± 0.01
Longitude 7.24 ± 0.02
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74241951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1185
Semi-minor axis of confidence ellipse (meter) 1034
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.0657
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 11
Type of magnitude ML
Reference to an origin 74241951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-02 08:15:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARCI.HHZ. 2019-12-02T08:08:16.32 3.0 undecidable manual Sg 15.36 0
IV.CPGN.EHZ. 2019-12-02T08:08:09.04 3.0 undecidable manual Sn 2.38 0
IT.VNF1.HGZ. 2019-12-02T08:08:08.25 3.0 negative manual Pg 17.59 0
IV.SEI.HHZ. 2019-12-02T08:07:54.21 3.0 undecidable manual Sn 5.44 0
IV.EL6.EHZ. 2019-12-02T08:07:40.72 3.0 undecidable manual Pg 9.94 0
IV.GAVE.EHZ. 2019-12-02T08:07:35.44 3.0 undecidable manual Pn 3.37 0
IV.FOSV.EHZ. 2019-12-02T08:07:33.12 3.0 undecidable manual Pn 5.44 0
IV.FIR.HHZ. 2019-12-02T08:07:21.18 3.0 undecidable manual Pg 9.84 0
IV.MSSA.HHZ. 2019-12-02T08:07:18.74 3.0 undecidable manual Sg 2.94 0
IV.AGLI.HHZ. 2019-12-02T08:07:18.23 3.0 undecidable manual Pn -2.86 0
IV.SEI.HHZ. 2019-12-02T08:07:12.41 3.0 undecidable manual Pn 0.92 0
IT.FIE.HGZ. 2019-12-02T08:07:11.68 3.0 negative manual Pn 0.08 0
RD.ORIF.BHE. 2019-12-02T08:06:56.53 0.6 undecidable manual S 296 1.0657 91 -0.33 38
IV.IMI.HHZ. 2019-12-02T08:06:46.24 0.6 undecidable manual S 139 0.7258 91 -0.56 37
GU.RORO.HHZ. 2019-12-02T08:06:45.37 0.6 undecidable manual S 120 0.6898 91 -0.34 40
RD.ORIF.BHE. 2019-12-02T08:06:43.15 0.1 undecidable manual P 296 1.0657 91 0.68 73
GU.RRL.HHZ. 2019-12-02T08:06:41.42 0.6 undecidable manual S 325 0.5558 92 -0.32 43
GU.PCP.HHZ. 2019-12-02T08:06:40.92 0.3 undecidable manual P 85 0.9353 91 0.69 58
GU.GBOS.HHZ. 2019-12-02T08:06:39.19 0.6 undecidable manual S 117 0.4847 92 -0.45 40
FR.SAOF.HHZ.00 2019-12-02T08:06:39.98 0.6 undecidable manual S 155 0.5288 92 -0.97 32
IV.QLNO.HHZ. 2019-12-02T08:06:38.56 0.3 undecidable manual P 100 0.804 91 0.57 62
GU.CANO.HHZ. 2019-12-02T08:06:37.53 0.1 undecidable manual P 109 0.759 91 0.3 88
MN.BNI.HHE. 2019-12-02T08:06:36.71 0.6 undecidable manual P 326 0.7087 91 0.35 43
GU.RORO.HHZ. 2019-12-02T08:06:36.13 0.1 undecidable manual P 120 0.6898 91 0.1 89
IV.IMI.HHZ. 2019-12-02T08:06:36.62 0.1 undecidable manual P 139 0.7258 91 -0.04 86
GU.RSP.HHE. 2019-12-02T08:06:35.32 0.1 undecidable manual P 2 0.6835 91 -0.61 73
GU.BHB.HHZ. 2019-12-02T08:06:35.43 0.6 undecidable manual S 3 0.3705 93 -0.84 35
GU.RRL.HHZ. 2019-12-02T08:06:33.86 0.3 undecidable manual P 325 0.5558 92 0.12 70
FR.SAOF.HHZ.00 2019-12-02T08:06:33.15 0.3 undecidable manual P 155 0.5288 92 -0.14 66
GU.GBOS.HHZ. 2019-12-02T08:06:32.63 0.1 positive manual P 117 0.4847 92 0.1 93
GU.BHB.HHZ. 2019-12-02T08:06:30.44 0.1 positive manual P 3 0.3705 93 -0.14 91
GU.PZZ.HHZ. 2019-12-02T08:06:28.18 0.3 undecidable manual S 296 0.0962 126 -0.18 73
GU.PZZ.HHZ. 2019-12-02T08:06:26.25 0.1 undecidable manual P 296 0.0962 126 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:2.4 0.002695 0.12 AML other m 2019-12-02T08:06:28.46
GU.PZZ.HHN. ML:2.4 0.002475 0.12 AML other m 2019-12-02T08:06:28.52
GU.GBOS.HHE. ML:1.6 9.93E-5 0.3 AML other m 2019-12-02T08:06:32.78
GU.GBOS.HHN. ML:1.5 6.825E-5 0.1 AML other m 2019-12-02T08:06:32.88
GU.BHB.HHE. ML:1.1 3.841562E-5 0.1408 AML other m 2019-12-02T08:06:36.53
GU.BHB.HHN. ML:1.1 4.292246E-5 0.1408 AML other m 2019-12-02T08:06:36.00
FR.SAOF.HHE.00 ML:1.1 2.708151E-5 0.0576 AML other m 2019-12-02T08:06:40.85
FR.SAOF.HHN.00 ML:1.2 2.9945615E-5 0.16 AML other m 2019-12-02T08:06:41.62
GU.RORO.HHN. ML:1.5 4.874414E-5 0.1408 AML other m 2019-12-02T08:06:47.68
IV.IMI.HHN. ML:1.5 4.741011E-5 0.1984 AML other m 2019-12-02T08:06:47.36
GU.CANO.HHN. ML:1.6 5.6312685E-5 0.32 AML other m 2019-12-02T08:06:50.75
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