Earthquake with magnitude of ML 0.8 on date 13-11-2021 and time 07:34:48 (UTC) in region 3 km SW Valmala (CN)

A magnitude ML 0.8 earthquake occured in region: 3 km SW Valmala (CN), on

  • 13-11-2021 07:34:48 (UTC)
  • 13-11-2021 08:34:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5320, 7.3200 at 7 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
Valmala CN 3 52 52
Melle CN 4 292 344
Brossasco CN 6 1084 1428
Frassino CN 6 265 1693
Roccabruna CN 6 1585 3278
Cartignano CN 7 190 3468
San Damiano Macra CN 7 430 3898
Venasca CN 7 1437 5335
Villar San Costanzo CN 7 1547 6882
Dronero CN 8 7035 13917
Isasca CN 8 76 13993
Rossana CN 9 908 14901
Brondello CN 10 290 15191
Gambasca CN 11 371 15562
Montemale di Cuneo CN 11 241 15803
Martiniana Po CN 11 734 16537
Sampeyre CN 12 1022 17559
Macra CN 12 59 17618
Piasco CN 12 2774 20392
Celle di Macra CN 12 100 20492
Busca CN 12 10181 30673
Sanfront CN 13 2395 33068
Pagno CN 13 585 33653
Pradleves CN 13 250 33903
Rifreddo CN 14 1078 34981
Monterosso Grana CN 14 505 35486
Castellar CN 14 295 35781
Costigliole Saluzzo CN 14 3375 39156
Valgrana CN 14 786 39942
Revello CN 15 4262 44204
Verzuolo CN 15 6459 50663
Caraglio CN 15 6836 57499
Stroppo CN 16 103 57602
Castelmagno CN 16 66 57668
Manta CN 16 3787 61455
Envie CN 17 2074 63529
Villafalletto CN 18 2925 66454
Paesana CN 18 2784 69238
Elva CN 18 97 69335
Bernezzo CN 18 4104 73439
Tarantasca CN 18 2122 75561
Saluzzo CN 19 16960 92521
Oncino CN 19 76 92597
Marmora CN 20 68 92665

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Cuneo (56081 inhabitants)
60 Km SW of Moncalieri (57294 inhabitants)
67 Km SW of Torino (890529 inhabitants)
81 Km SW of Asti (76202 inhabitants)
87 Km NW of Sanremo (54807 inhabitants)
96 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 0.8 2021-11-13
07:34:48
44.5317 7.3198 7 2022-03-30
13:04:29
Bollettino Sismico Italiano INGV 99646721
Reviewed
Rev100
ML 0.8 2021-11-13
07:34:48
44.5168 7.2423 15 2021-11-13
07:44:22
Sala Sismica INGV-Roma 97432241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-13 07:34:48 ± 0.21
Latitude 44.5317 ± 0.0081
Longitude 7.3198 ± 0.0189
Depth (km) 7 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99646721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1520
Semi-minor axis of confidence ellipse (meter) 850
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 1520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.14749
Epicentral distance of station farthest from the epicenter (degree) 0.31027
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 99646721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-11 17:13:17

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 97432241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-13 07:44:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BHB.HHZ. 2021-11-13T07:35:00.26 0.6 undecidable manual S 352 34.0437 102 -0.38 47
GU.ENR.HHZ. 2021-11-13T07:35:00.17 0.6 undecidable manual S 167 34.4433 102 -0.61 43
GU.STV.HHZ. 2021-11-13T07:34:59.23 0.6 undecidable manual S 179 31.8459 103 -0.66 43
GU.ENR.HHZ. 2021-11-13T07:34:56.05 0.1 undecidable manual P 167 34.4433 102 0.43 92
GU.STV.HHZ. 2021-11-13T07:34:55.40 0.3 undecidable manual P 179 31.8459 103 0.29 71
GU.BHB.HHZ. 2021-11-13T07:34:55.50 0.1 undecidable manual P 352 34.0437 102 -0.04 100
GU.PZZ.HHZ. 2021-11-13T07:34:54.54 0.3 undecidable manual S 260 16.3725 114 -0.25 74
GU.PZZ.HHZ. 2021-11-13T07:34:52.65 0.3 undecidable manual P 260 16.3725 114 0.49 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:0.8 0.00005840000000000001 0.52 AML other m 2021-11-13T07:34:54.68
GU.PZZ.HHE. ML:0.7 0.000049500000000000004 0.2 AML other m 2021-11-13T07:34:54.73
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