Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 09-03-2021 and time 18:10:17 (Italy) in region 2 km E Valdieri (CN)

A magnitude ML 0.9 earthquake occured in region: 2 km E Valdieri (CN), on

  • 09-03-2021 17:10:17 (UTC)
  • 09-03-2021 18:10:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2840, 7.4210 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.

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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 2 935 935
Roaschia CN 3 107 1042
Moiola CN 5 234 1276
Entracque CN 5 774 2050
Gaiola CN 6 582 2632
Roccavione CN 6 2761 5393
Roccasparvera CN 7 741 6134
Valloriate CN 7 109 6243
Borgo San Dalmazzo CN 7 12468 18711
Robilante CN 7 2306 21017
Rittana CN 8 109 21126
Vignolo CN 9 2600 23726
Vernante CN 10 1178 24904
Demonte CN 10 2003 26907
Boves CN 12 9835 36742
Cervasca CN 12 5013 41755
Bernezzo CN 12 4104 45859
Valgrana CN 14 786 46645
Caraglio CN 15 6836 53481
Limone Piemonte CN 15 1485 54966
Monterosso Grana CN 16 505 55471
Cuneo CN 16 56081 111552
Aisone CN 16 248 111800
Peveragno CN 17 5543 117343
Montemale di Cuneo CN 18 241 117584
Pradleves CN 19 250 117834
Vinadio CN 20 644 118478

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Cuneo (56081 inhabitants)
59 Km NW of Sanremo (54807 inhabitants)
83 Km S of Moncalieri (57294 inhabitants)
85 Km W of Savona (61345 inhabitants)
90 Km S of Torino (890529 inhabitants)
93 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 0.9 2021-03-09
17:10:17		 44.2838 7.4212 12 2021-07-12
16:55:02		 Bollettino Sismico Italiano INGV 88216381
Reviewed
Rev100 		ML 1.1 2021-03-09
17:10:17		 44.2763 7.4125 12 2021-03-09
17:19:08		 Sala Sismica INGV-Roma 87946211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-09 17:10:17 ± 0.13
Latitude 44.2838 ± 0.0108
Longitude 7.4212 ± 0.0138
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88216381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1194
Semi-minor axis of confidence ellipse (meter) 744
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 224
Circular confidence region, given by single value of horizontal uncertainty (meter) 1190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77971
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 87946211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-09 17:19:08

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 88216381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-08 01:03:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CPOZ.HHZ. 2021-03-09T17:12:06.41 3.0 positive manual Pg 17.530001 0
IV.AGLI.HHZ. 2021-03-09T17:11:52.22 3.0 undecidable manual Sn -1.47 0
IV.RIBO.EHZ.01 2021-03-09T17:11:42.53 3.0 undecidable manual Sn 0.36 0
IV.VOBA.EHZ. 2021-03-09T17:11:39.80 3.0 undecidable manual Sn 3.61 0
IV.ARCI.HHZ. 2021-03-09T17:11:13.13 3.0 undecidable manual Pn 2.13 0
IV.EUCT.HNZ. 2021-03-09T17:11:10.51 3.0 undecidable manual Sg -0.55 0
IV.NDIM.HNZ. 2021-03-09T17:11:04.26 3.0 positive manual Pn 2.08 0
IV.SARZ.HHZ. 2021-03-09T17:10:44.97 3.0 negative manual P 0.52 0
GU.BHB.HHE. 2021-03-09T17:10:35.36 0.6 undecidable manual S 349 62.493 91 -1.1 34
GU.IMI.HHZ. 2021-03-09T17:10:34.59 0.6 undecidable manual S 138 55.8996 91 -0.12 46
GU.RORO.HHE. 2021-03-09T17:10:34.45 0.6 undecidable manual S 110 54.7008 91 0.05 48
GU.RRL.HHE. 2021-03-09T17:10:32.93 0.6 undecidable manual P 325 86.5467 90 0.86 34
GU.CANO.HHZ. 2021-03-09T17:10:29.99 0.3 undecidable manual P 97 65.3901 91 1.17 48
GU.GBOS.HHZ. 2021-03-09T17:10:28.42 0.3 undecidable manual S 98 33.6441 91 -0.33 69
GU.PZZ.HHE. 2021-03-09T17:10:28.87 0.3 undecidable manual S 316 34.6431 91 -0.14 74
GU.BHB.HHE. 2021-03-09T17:10:28.00 0.3 undecidable manual P 349 62.493 91 -0.37 66
FR.SAOF.HHZ.00 2021-03-09T17:10:28.44 0.3 undecidable manual S 162 34.6431 91 -0.59 64
GU.IMI.HHZ. 2021-03-09T17:10:27.82 0.3 undecidable manual P 138 55.8996 91 0.46 66
GU.RORO.HHE. 2021-03-09T17:10:26.69 0.6 undecidable manual P 110 54.7008 91 -0.49 43
GU.PZZ.HHE. 2021-03-09T17:10:24.30 0.1 undecidable manual P 316 34.6431 91 0.23 94
FR.SAOF.HHZ.00 2021-03-09T17:10:24.20 0.1 undecidable manual P 162 34.6431 91 0.11 97
GU.GBOS.HHZ. 2021-03-09T17:10:24.20 0.3 undecidable manual P 98 33.6441 91 0.28 71
GU.STV.HHE. 2021-03-09T17:10:21.88 0.1 undecidable manual S 240 8.6802 130 -0.41 98
GU.ENR.HHE. 2021-03-09T17:10:21.54 0.1 undecidable manual S 182 5.994 144 -0.27 100
GU.ENR.HHE. 2021-03-09T17:10:20.18 0.1 undecidable manual P 182 5.994 144 0.27 98
GU.STV.HHE. 2021-03-09T17:10:20.44 0.1 undecidable manual P 240 8.6802 130 0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:0.1 0.00000589446715 0.1664 AML other m 2021-03-09T17:10:28.56
GU.GBOS.HHN. ML:0.4 0.00000757125 0.64 AML other m 2021-03-09T17:10:28.58
FR.SAOF.HHN.00 ML:0.9 0.00003261297 0.1408 AML other m 2021-03-09T17:10:28.60
FR.SAOF.HHE.00 ML:0.7 0.00002232163 0.2304 AML other m 2021-03-09T17:10:28.60
GU.IMI.HHE. ML:1.1 0.000032133518 0.1408 AML other m 2021-03-09T17:10:34.82
GU.IMI.HHN. ML:1.4 0.00005449936 0.128 AML other m 2021-03-09T17:10:34.81
GU.CANO.HHN. ML:0.9 0.000013149975 0.4352 AML other m 2021-03-09T17:10:37.40
GU.CANO.HHE. ML:1.4 0.000049890270000000004 1.0624 AML other m 2021-03-09T17:10:37.27
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