Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 26-12-2019 and time 06:38:20 (UTC) in region 1 km S Valloriate (CN)

A magnitude ML 1.0 earthquake occured in region: 1 km S Valloriate (CN), on

  • 26-12-2019 06:38:20 (UTC)
  • 26-12-2019 07:38:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3300, 7.3740 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valloriate CN 1 109 109
Moiola CN 2 234 343
Gaiola CN 3 582 925
Rittana CN 3 109 1034
Roccasparvera CN 6 741 1775
Valdieri CN 6 935 2710
Demonte CN 6 2003 4713
Bernezzo CN 8 4104 8817
Vignolo CN 9 2600 11417
Roccavione CN 9 2761 14178
Valgrana CN 9 786 14964
Borgo San Dalmazzo CN 9 12468 27432
Roaschia CN 9 107 27539
Cervasca CN 10 5013 32552
Monterosso Grana CN 10 505 33057
Entracque CN 10 774 33831
Caraglio CN 11 6836 40667
Robilante CN 12 2306 42973
Montemale di Cuneo CN 12 241 43214
Aisone CN 12 248 43462
Pradleves CN 12 250 43712
Boves CN 14 9835 53547
Dronero CN 15 7035 60582
Castelmagno CN 16 66 60648
Vernante CN 16 1178 61826
Vinadio CN 16 644 62470
Cuneo CN 16 56081 118551
Roccabruna CN 17 1585 120136
Villar San Costanzo CN 17 1547 121683
Cartignano CN 18 190 121873
Peveragno CN 20 5543 127416
San Damiano Macra CN 20 430 127846

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km W of Cuneo (56081 inhabitants)
65 Km NW of Sanremo (54807 inhabitants)
79 Km SW of Moncalieri (57294 inhabitants)
86 Km S of Torino (890529 inhabitants)
88 Km W of Savona (61345 inhabitants)
91 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 1.0 2019-12-26
06:38:20		 44.3297 7.3735 10 2020-02-28
16:42:25		 Bollettino Sismico Italiano INGV 76594491
Reviewed
Rev100 		ML 1.0 2019-12-26
06:38:20		 44.3312 7.3742 10 2019-12-26
06:48:45		 Sala Sismica INGV-Roma 74987561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-26 06:38:20 ± 0.21
Latitude 44.3297 ± 0.0144
Longitude 7.3735 ± 0.0189
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76594491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1965
Semi-minor axis of confidence ellipse (meter) 916
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 221
Circular confidence region, given by single value of horizontal uncertainty (meter) 1960.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.84177
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 76594491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-17 11:05:39

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 74987561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-26 06:48:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CANO.HHZ. 2019-12-26T06:38:41.35 0.3 undecidable manual S 101 69.9744 50 -0.59 61
IV.MONC.HHE. 2019-12-26T06:38:36.91 0.6 undecidable manual P 28 93.4398 50 0.41 41
GU.CANO.HHZ. 2019-12-26T06:38:33.40 0.1 undecidable manual P 101 69.9744 50 0.52 83
GU.BURY.HHE. 2019-12-26T06:38:32.21 0.1 undecidable manual P 166 62.3931 50 0.48 85
GU.GBOS.HHZ. 2019-12-26T06:38:32.32 0.6 undecidable manual S 105 38.3283 50 -1.17 33
IV.IMI.HHZ. 2019-12-26T06:38:31.77 0.1 undecidable manual P 138 62.2932 50 0.07 93
GU.PZZ.HHZ. 2019-12-26T06:38:30.41 0.3 undecidable manual S 314 28.3494 50 -0.42 69
GU.BHB.HHZ. 2019-12-26T06:38:30.95 0.3 undecidable manual P 351 56.7987 50 0.1 70
FR.SAOF.HHE.00 2019-12-26T06:38:28.42 0.1 undecidable manual P 159 40.7259 50 0.04 97
GU.GBOS.HHZ. 2019-12-26T06:38:28.17 0.6 undecidable manual P 105 38.3283 50 0.16 48
GU.PZZ.HHZ. 2019-12-26T06:38:26.47 0.1 undecidable manual P 314 28.3494 50 0 100
GU.STV.HHZ. 2019-12-26T06:38:24.96 0.1 undecidable manual S 202 10.0788 134 -0.41 95
GU.STV.HHZ. 2019-12-26T06:38:23.50 0.1 undecidable manual P 202 10.0788 134 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:1.2 0.0002 0.08 AML other m 2019-12-26T06:38:25.00
GU.STV.HHN. ML:0.7 0.00007230000000000001 0.16 AML other m 2019-12-26T06:38:25.04
GU.PZZ.HHN. ML:1.1 0.00006335 0.1 AML other m 2019-12-26T06:38:31.31
GU.PZZ.HHE. ML:0.9 0.00004675 0.24 AML other m 2019-12-26T06:38:31.21
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