Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 01-10-2021 and time 06:14:55 (UTC) in region 2 km W Celle di Macra (CN)

A magnitude ML 0.6 earthquake occured in region: 2 km W Celle di Macra (CN), on

  • 01-10-2021 06:14:55 (UTC)
  • 01-10-2021 08:14:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4820, 7.1590 at 24 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
Celle di Macra CN 2 100 100
Macra CN 3 59 159
Stroppo CN 4 103 262
Marmora CN 6 68 330
Canosio CN 7 80 410
San Damiano Macra CN 8 430 840
Prazzo CN 8 170 1010
Elva CN 9 97 1107
Castelmagno CN 9 66 1173
Cartignano CN 10 190 1363
Sampeyre CN 11 1022 2385
Pradleves CN 12 250 2635
Acceglio CN 13 162 2797
Frassino CN 14 265 3062
Casteldelfino CN 14 157 3219
Roccabruna CN 15 1585 4804
Monterosso Grana CN 15 505 5309
Bellino CN 16 109 5418
Melle CN 16 292 5710
Dronero CN 16 7035 12745
Valmala CN 17 52 12797
Sambuco CN 17 92 12889
Villar San Costanzo CN 18 1547 14436
Montemale di Cuneo CN 18 241 14677
Pietraporzio CN 18 77 14754
Argentera CN 19 83 14837
Pontechianale CN 19 179 15016
Brossasco CN 19 1084 16100
Aisone CN 19 248 16348
Valgrana CN 19 786 17134
Vinadio CN 19 644 17778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Cuneo (56081 inhabitants)
71 Km SW of Moncalieri (57294 inhabitants)
78 Km SW of Torino (890529 inhabitants)
89 Km NW of Sanremo (54807 inhabitants)
95 Km W 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
Reviewed
Rev100 		ML 0.6 2021-10-01
06:14:55		 44.4818 7.1592 24 2021-10-01
06:31:35		 Sala Sismica INGV-Roma 96092451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-01 06:14:55 ± 0.3
Latitude 44.4818 ± 0.0144
Longitude 7.1592 ± 0.0315
Depth (km) 24 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96092451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2474
Semi-minor axis of confidence ellipse (meter) 1337
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 2470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
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) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.03957
Epicentral distance of station farthest from the epicenter (degree) 0.66999
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 96092451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-01 06:31:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BHB.HHZ. 2021-10-01T06:15:09.66 0.6 undecidable manual S 12 40.0266 113 -0.18 51
GU.MGRO.HHE. 2021-10-01T06:15:08.92 0.1 undecidable manual P 133 70.9734 102 0.38 91
GU.RSP.HHE. 2021-10-01T06:15:08.68 0.3 undecidable manual P 6 74.37 101 -0.38 68
GU.ENR.HHZ. 2021-10-01T06:15:07.80 0.6 undecidable manual S 144 34.743 117 -0.75 43
GU.GBOS.HHE. 2021-10-01T06:15:06.95 0.1 undecidable manual P 116 60.1953 104 0.02 100
GU.RRL.HHE. 2021-10-01T06:15:06.16 0.1 undecidable manual P 329 56.6988 106 -0.25 96
FR.SAOF.HHE.00 2021-10-01T06:15:06.81 0.1 undecidable manual P 150 63.2922 104 -0.58 87
GU.STV.HHZ. 2021-10-01T06:15:06.68 0.6 undecidable manual S 153 29.4483 122 -0.63 46
GU.BHB.HHZ. 2021-10-01T06:15:04.30 0.6 undecidable manual P 12 40.0266 113 0.32 49
GU.ENR.HHZ. 2021-10-01T06:15:03.74 0.1 undecidable manual P 144 34.743 117 0.5 95
GU.STV.HHZ. 2021-10-01T06:15:02.85 0.1 undecidable manual P 153 29.4483 122 0.32 100
GU.PZZ.HHZ. 2021-10-01T06:15:02.87 0.6 undecidable manual S 308 4.3956 168 -0.39 51
GU.PZZ.HHZ. 2021-10-01T06:15:00.77 0.1 undecidable manual P 308 4.3956 168 0.59 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:0.9 0.00005285 1.78 AML other m 2021-10-01T06:15:02.05
GU.PZZ.HHN. ML:0.8 0.00003849446999999999 0.1792 AML other m 2021-10-01T06:15:03.08
GU.STV.HHE. ML:0.4 0.000010090587500000002 0.1568 AML other m 2021-10-01T06:15:07.07
GU.STV.HHN. ML:0.6 0.000012653080000000001 0.1184 AML other m 2021-10-01T06:15:07.06
GU.ENR.HHE. ML:0.8 0.000020746575 0.08 AML other m 2021-10-01T06:15:08.30
GU.ENR.HHN. ML:1.0 0.000029115460000000003 0.2208 AML other m 2021-10-01T06:15:07.95
GU.BHB.HHE. ML:0.2 0.0000073446625 0.3424 AML other m 2021-10-01T06:15:09.78
GU.BHB.HHN. ML:0.2 0.0000047194605 0.4384 AML other m 2021-10-01T06:15:10.15
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