Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 25-01-2020 and time 10:45:44 (Italy) in region 3 km W Valdieri (CN)

A magnitude ML 1.1 earthquake occured in region: 3 km W Valdieri (CN), on

  • 25-01-2020 09:45:44 (UTC)
  • 25-01-2020 10:45:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2790, 7.3610 at 8 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.

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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
Valdieri CN 3 935 935
Entracque CN 5 774 1709
Moiola CN 5 234 1943
Demonte CN 6 2003 3946
Valloriate CN 7 109 4055
Gaiola CN 7 582 4637
Roaschia CN 8 107 4744
Rittana CN 9 109 4853
Roccasparvera CN 10 741 5594
Roccavione CN 11 2761 8355
Borgo San Dalmazzo CN 12 12468 20823
Aisone CN 12 248 21071
Robilante CN 12 2306 23377
Vignolo CN 13 2600 25977
Bernezzo CN 14 4104 30081
Vernante CN 14 1178 31259
Cervasca CN 15 5013 36272
Valgrana CN 15 786 37058
Monterosso Grana CN 15 505 37563
Vinadio CN 15 644 38207
Boves CN 16 9835 48042
Caraglio CN 16 6836 54878
Pradleves CN 17 250 55128
Montemale di Cuneo CN 18 241 55369
Castelmagno CN 19 66 55435
Limone Piemonte CN 19 1485 56920
Cuneo CN 20 56081 113001

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SW of Cuneo (56081 inhabitants)
61 Km NW of Sanremo (54807 inhabitants)
84 Km SW of Moncalieri (57294 inhabitants)
89 Km W of Savona (61345 inhabitants)
92 Km S of Torino (890529 inhabitants)
96 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 1.1 2020-01-25
09:45:44		 44.2793 7.3608 8 2020-07-18
21:08:22		 Bollettino Sismico Italiano INGV 76863331
Reviewed
Rev100 		ML 1.1 2020-01-25
09:45:44		 44.275 7.3475 8 2020-01-25
10:00:53		 Sala Sismica INGV-Roma 75832121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-25 09:45:44 ± 0.19
Latitude 44.2793 ± 0.0153
Longitude 7.3608 ± 0.0264
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76863331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2443
Semi-minor axis of confidence ellipse (meter) 953
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 2440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34444
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 75832121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-25 10:00:53

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 76863331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-27 10:18:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MFNL.HHZ. 2020-01-25T09:47:33.29 3.0 negative manual Pn -1.42 0
IT.VNF1.HGZ. 2020-01-25T09:47:29.53 3.0 negative manual Pg 20.33 0
IV.IMOL.HNZ. 2020-01-25T09:47:28.00 3.0 undecidable manual Sn 4.88 0
IV.OPPE.HNZ. 2020-01-25T09:47:26.53 3.0 undecidable manual Sg 10.69 0
IV.RIBO.EHZ.01 2020-01-25T09:47:24.29 3.0 undecidable manual Sg 6.05 0
IV.MBAL.EHZ. 2020-01-25T09:47:21.25 3.0 undecidable manual Sg 7.6 0
IV.FIR.HHZ. 2020-01-25T09:47:12.04 3.0 undecidable manual Sn -3.94 0
IV.NDIM.HNZ. 2020-01-25T09:47:11.82 3.0 undecidable manual Sn 2.65 0
IV.ARVD.HHZ. 2020-01-25T09:47:06.20 3.0 positive manual Pg 17.51 0
IV.CADC.HNZ. 2020-01-25T09:47:05.08 3.0 undecidable manual Sg 5.28 0
IV.VOBA.HNZ. 2020-01-25T09:47:05.51 3.0 undecidable manual Sn -1.98 0
IV.GIUL.HHZ. 2020-01-25T09:47:00.29 3.0 negative manual Pn -1.22 0
IV.ASSB.HHZ. 2020-01-25T09:46:49.05 3.0 undecidable manual Pn 1.52 0
IV.FIR.HHZ. 2020-01-25T09:46:46.30 3.0 undecidable manual Pg 14.87 0
IV.CAVE.HHZ. 2020-01-25T09:46:40.96 3.0 negative manual Pg 12.39 0
IV.BRSN.EHZ. 2020-01-25T09:46:38.24 3.0 positive manual Pn -0.57 0
IV.ZCCA.HNZ. 2020-01-25T09:46:33.01 3.0 undecidable manual Pg 5.12 0
IV.ZONE.HHZ. 2020-01-25T09:46:21.22 3.0 negative manual Pn -2.75 0
IV.CAPR.HNZ. 2020-01-25T09:46:18.31 3.0 undecidable manual Pn -3.32 0
GU.GBOS.HHZ. 2020-01-25T09:45:56.90 0.6 undecidable manual S 96 38.2284 50 -0.7 41
FR.SAOF.HHZ.00 2020-01-25T09:45:56.32 0.6 undecidable manual S 155 35.9418 50 -0.65 42
GU.PZZ.HHZ. 2020-01-25T09:45:55.18 0.3 undecidable manual S 323 31.8459 105 -0.55 67
GU.GBOS.HHZ. 2020-01-25T09:45:52.13 0.1 undecidable manual P 96 38.2284 50 0.15 97
FR.SAOF.HHZ.00 2020-01-25T09:45:51.98 0.1 undecidable manual P 155 35.9418 50 0.36 93
GU.PZZ.HHZ. 2020-01-25T09:45:51.41 0.3 undecidable manual P 323 31.8459 105 0.5 68
GU.ENR.HHZ. 2020-01-25T09:45:48.00 0.3 undecidable manual S 141 7.4814 138 -0.21 75
GU.STV.HHZ. 2020-01-25T09:45:47.12 0.3 undecidable manual S 216 4.6953 151 -0.51 71
GU.STV.HHZ. 2020-01-25T09:45:46.49 0.1 undecidable manual P 216 4.6953 151 0.26 100
GU.ENR.HHZ. 2020-01-25T09:45:46.94 0.1 undecidable manual P 141 7.4814 138 0.38 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHN. ML:1.2 0.00027385395 0.064 AML other m 2020-01-25T09:45:48.24
GU.ENR.HHE. ML:1.4 0.00038910545 0.0576 AML other m 2020-01-25T09:45:48.44
GU.PZZ.HHN. ML:1.0 0.000052224895 0.256 AML other m 2020-01-25T09:45:55.64
GU.PZZ.HHE. ML:0.9 0.000035222389999999996 0.1792 AML other m 2020-01-25T09:45:55.54
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