Earthquake with magnitude of ML 1.6 on date 22-02-2020 and time 09:10:08 (Italy) in region 1 km W Roccabruna (CN)

A magnitude ML 1.6 earthquake occured in region: 1 km W Roccabruna (CN), on

  • 22-02-2020 08:10:08 (UTC)
  • 22-02-2020 09:10:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.48, 7.32 at 6 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Roccabruna CN 1 1585 1585
Cartignano CN 3 190 1775
Dronero CN 4 7035 8810
Villar San Costanzo CN 5 1547 10357
San Damiano Macra CN 5 430 10787
Montemale di Cuneo CN 6 241 11028
Valmala CN 7 52 11080
Pradleves CN 8 250 11330
Monterosso Grana CN 8 505 11835
Valgrana CN 9 786 12621
Melle CN 9 292 12913
Brossasco CN 11 1084 13997
Caraglio CN 11 6836 20833
Venasca CN 11 1437 22270
Frassino CN 11 265 22535
Rossana CN 11 908 23443
Celle di Macra CN 11 100 23543
Macra CN 12 59 23602
Castelmagno CN 12 66 23668
Busca CN 13 10181 33849
Isasca CN 13 76 33925
Bernezzo CN 14 4104 38029
Piasco CN 15 2774 40803
Brondello CN 15 290 41093
Sampeyre CN 15 1022 42115
Rittana CN 16 109 42224
Cervasca CN 16 5013 47237
Stroppo CN 16 103 47340
Costigliole Saluzzo CN 16 3375 50715
Valloriate CN 16 109 50824
Gambasca CN 17 371 51195
Martiniana Po CN 17 734 51929
Pagno CN 17 585 52514
Gaiola CN 17 582 53096
Tarantasca CN 18 2122 55218
Vignolo CN 18 2600 57818
Roccasparvera CN 18 741 58559
Castellar CN 18 295 58854
Marmora CN 18 68 58922
Demonte CN 18 2003 60925
Verzuolo CN 18 6459 67384
Sanfront CN 19 2395 69779
Moiola CN 19 234 70013
Villafalletto CN 19 2925 72938
Rifreddo CN 19 1078 74016
Canosio CN 19 80 74096
Elva CN 20 97 74193
Manta CN 20 3787 77980

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Cuneo (56081 inhabitants)
65 Km SW of Moncalieri (57294 inhabitants)
72 Km SW of Torino (890529 inhabitants)
82 Km NW of Sanremo (54807 inhabitants)
84 Km SW of Asti (76202 inhabitants)
94 Km W of Savona (61345 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 1.6 2020-02-22
08:10:08
44.48 7.32 6 2020-07-18
21:08:22
Bollettino Sismico Italiano INGV 76866001
Reviewed
Rev100
ML 1.6 2020-02-22
08:10:08
44.5 7.34 5 2020-02-22
08:24:05
Sala Sismica INGV-Roma 76715261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-22 08:10:08 ± 0.13
Latitude 44.48 ± 0.01
Longitude 7.32 ± 0.02
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76866001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1453
Semi-minor axis of confidence ellipse (meter) 679
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 1450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.64571
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 76866001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-27 12:51:19

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 76715261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-22 08:24:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCRV.HHZ. 2020-02-22T08:11:45.00 3.0 positive manual Pn -1.77 0
IV.FIU.EHZ. 2020-02-22T08:11:41.00 3.0 undecidable manual Sn 0.14 0
IV.FIR.HHZ. 2020-02-22T08:10:56.59 3.0 undecidable manual Pn 2.96 0
IV.MRGE.HHZ. 2020-02-22T08:10:39.13 3.0 undecidable manual Sn -0.55 0
IV.EUCT.HNZ. 2020-02-22T08:10:33.15 3.0 negative manual Pn 0.48 0
GU.RORO.HHE. 2020-02-22T08:10:31.15 0.3 undecidable manual S 125 0.6457 50 -0.47 65
GU.GBOS.HHZ. 2020-02-22T08:10:25.03 0.6 undecidable manual S 123 0.4389 50 -0.46 45
GU.BHB.HHE. 2020-02-22T08:10:22.81 0.3 undecidable manual S 353 0.357 99 -0.11 75
GU.RORO.HHE. 2020-02-22T08:10:22.56 0.3 undecidable manual P 125 0.6457 50 0.5 65
GU.ENR.HHZ. 2020-02-22T08:10:19.10 0.3 undecidable manual S 165 0.2626 102 -0.27 74
GU.GBOS.HHZ. 2020-02-22T08:10:18.86 0.1 undecidable manual P 123 0.4389 50 0.34 93
GU.STV.HHZ. 2020-02-22T08:10:17.94 0.3 undecidable manual S 180 0.2347 104 -0.38 72
GU.BHB.HHE. 2020-02-22T08:10:16.83 0.1 undecidable manual P 353 0.357 99 -0.21 98
GU.ENR.HHZ. 2020-02-22T08:10:15.36 0.1 negative manual P 165 0.2626 102 0.37 96
GU.PZZ.HHZ. 2020-02-22T08:10:14.94 0.1 undecidable manual S 280 0.1511 111 -0.28 100
GU.STV.HHZ. 2020-02-22T08:10:14.66 0.3 undecidable manual P 180 0.2347 104 0.28 74
GU.PZZ.HHZ. 2020-02-22T08:10:12.95 0.1 positive manual P 280 0.1511 111 0.36 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.7 0.0005005 0.1 AML other m 2020-02-22T08:10:15.14
GU.PZZ.HHE. ML:1.6 0.0004265 0.38 AML other m 2020-02-22T08:10:15.11
GU.ENR.HHN. ML:1.4 0.000134 1.06 AML other m 2020-02-22T08:10:19.65
GU.ENR.HHE. ML:1.5 0.000165 0.34 AML other m 2020-02-22T08:10:19.61
GU.STV.HHN. ML:0.5 1.9126729E-5 0.1024 AML other m 2020-02-22T08:10:18.42
GU.STV.HHE. ML:0.5 2.0712145E-5 0.1984 AML other m 2020-02-22T08:10:18.53
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