Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 16-11-2021 and time 10:38:23 (Italy) in region 5 km SE Oncino (CN)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Oncino (CN), on

  • 16-11-2021 09:38:23 (UTC)
  • 16-11-2021 10:38:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.6480, 7.2330 at 11 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
Oncino CN 5 76 76
Paesana CN 6 2784 2860
Ostana CN 6 83 2943
Sanfront CN 7 2395 5338
Crissolo CN 8 168 5506
Sampeyre CN 8 1022 6528
Frassino CN 9 265 6793
Rifreddo CN 9 1078 7871
Gambasca CN 9 371 8242
Martiniana Po CN 11 734 8976
Barge CN 11 7774 16750
Envie CN 12 2074 18824
Melle CN 12 292 19116
Revello CN 13 4262 23378
Brossasco CN 13 1084 24462
Isasca CN 14 76 24538
Bagnolo Piemonte CN 14 6024 30562
Casteldelfino CN 14 157 30719
Valmala CN 15 52 30771
Brondello CN 15 290 31061
Venasca CN 16 1437 32498
Pagno CN 16 585 33083
Pontechianale CN 16 179 33262
Rorà TO 16 257 33519
Elva CN 16 97 33616
Castellar CN 17 295 33911
Macra CN 17 59 33970
Bibiana TO 17 3442 37412
Lusernetta TO 17 506 37918
Stroppo CN 18 103 38021
San Damiano Macra CN 18 430 38451
Bellino CN 19 109 38560
Luserna San Giovanni TO 19 7395 45955
Campiglione Fenile TO 19 1390 47345
Villar Pellice TO 19 1076 48421
Celle di Macra CN 19 100 48521
Cavour TO 19 5545 54066
Torre Pellice TO 19 4551 58617
Cartignano CN 19 190 58807
Rossana CN 20 908 59715
Piasco CN 20 2774 62489
Bobbio Pellice TO 20 563 63052

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of Cuneo (56081 inhabitants)
53 Km SW of Moncalieri (57294 inhabitants)
59 Km SW of Torino (890529 inhabitants)
82 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
Bulletin
Rev1000 		ML 1.0 2021-11-16
09:38:23		 44.6483 7.2327 11 2022-03-30
13:04:16		 Bollettino Sismico Italiano INGV 97529091
Reviewed
Rev100 		ML 1.4 2021-11-16
09:38:23		 44.6475 7.2363 11 2021-11-16
09:59:44		 Sala Sismica INGV-Roma 97491611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-16 09:38:23 ± 0.09
Latitude 44.6483 ± 0.0045
Longitude 7.2327 ± 0.0114
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97529091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 980
Semi-minor axis of confidence ellipse (meter) 361
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 980.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.16458
Epicentral distance of station farthest from the epicenter (degree) 0.94069
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 97491611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-16 09:59:44

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 97529091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-17 21:11:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PCP.HHE. 2021-11-16T09:38:53.10 0.6 undecidable manual S 96 104.4177 90 -0.58 39
GU.GBOS.HHZ. 2021-11-16T09:38:43.28 0.3 undecidable manual S 133 65.9895 90 -0.14 69
MN.BNI.HHE. 2021-11-16T09:38:42.12 0.3 undecidable manual S 316 62.493 90 -0.39 68
GU.PCP.HHE. 2021-11-16T09:38:41.23 0.1 undecidable manual P 96 104.4177 90 0.36 83
GU.RSP.HHZ. 2021-11-16T09:38:40.26 0.3 undecidable manual S 3 55.5 90 -0.38 69
GU.IMI.HHZ. 2021-11-16T09:38:39.92 0.3 undecidable manual P 147 97.2249 90 0.16 66
GU.ENR.HHZ. 2021-11-16T09:38:38.44 0.3 undecidable manual S 162 48.7179 90 -0.39 68
GU.STV.HHZ. 2021-11-16T09:38:37.51 0.3 undecidable manual S 171 45.3213 90 -0.41 68
GU.RRL.HHZ. 2021-11-16T09:38:37.70 0.3 undecidable manual S 311 46.1205 90 -0.44 69
GU.GBOS.HHZ. 2021-11-16T09:38:35.34 0.1 negative manual P 133 65.9895 90 0.4 89
MN.BNI.HHE. 2021-11-16T09:38:34.63 0.1 undecidable manual P 316 62.493 90 0.21 92
GU.RSP.HHZ. 2021-11-16T09:38:33.48 0.1 undecidable manual P 3 55.5 90 0.14 95
GU.RRL.HHZ. 2021-11-16T09:38:32.30 0.1 positive manual P 311 46.1205 90 0.41 91
GU.ENR.HHZ. 2021-11-16T09:38:32.32 0.1 positive manual P 162 48.7179 90 0.03 99
GU.STV.HHZ. 2021-11-16T09:38:31.89 0.1 undecidable manual P 171 45.3213 90 0.12 99
GU.PZZ.HHZ. 2021-11-16T09:38:30.40 0.3 undecidable manual S 210 18.2706 91 -0.29 73
GU.BHB.HHZ. 2021-11-16T09:38:30.83 0.3 undecidable manual S 7 20.868 91 -0.57 71
GU.BHB.HHZ. 2021-11-16T09:38:28.18 0.1 undecidable manual P 7 20.868 91 0.18 100
GU.PZZ.HHZ. 2021-11-16T09:38:27.94 0.1 undecidable manual P 210 18.2706 91 0.35 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:1.4 0.000188 0.24 AML other m 2021-11-16T09:38:31.16
GU.PZZ.HHN. ML:1.3 0.00017199999999999998 1.62 AML other m 2021-11-16T09:38:32.06
GU.BHB.HHN. ML:0.6 0.000030375265 0.0768 AML other m 2021-11-16T09:38:31.12
GU.BHB.HNN. ML:0.9 0.000060169575000000006 2.7392 AML other m 2021-11-16T09:38:31.37
GU.BHB.HNE. ML:0.8 0.00003952204 0.1344 AML other m 2021-11-16T09:38:31.29
GU.BHB.HHE. ML:0.7 0.000035100144999999996 0.0768 AML other m 2021-11-16T09:38:31.98
GU.STV.HHE. ML:0.9 0.000025602135000000003 0.1024 AML other m 2021-11-16T09:38:38.65
GU.STV.HHN. ML:0.7 0.000016188934499999998 0.16 AML other m 2021-11-16T09:38:38.78
GU.RRL.HHE. ML:1.0 0.00003085496 0.16 AML other m 2021-11-16T09:38:38.63
GU.RRL.HHN. ML:1.1 0.000037262749999999995 0 AML other m 2021-11-16T09:38:38.04
GU.ENR.HHN. ML:1.2 0.000044299914999999993 0.0832 AML other m 2021-11-16T09:38:39.94
GU.ENR.HHE. ML:1.2 0.00004280172 0.0576 AML other m 2021-11-16T09:38:39.70
GU.RSP.HHE. ML:1.0 0.000019094631 0.1216 AML other m 2021-11-16T09:38:41.61
GU.RSP.HHN. ML:1.0 0.0000237541935 0.1408 AML other m 2021-11-16T09:38:42.25
GU.GBOS.HHE. ML:1.0 0.000019942385 0.7744 AML other m 2021-11-16T09:38:48.21
GU.GBOS.HHN. ML:0.7 0.00000824227 0.1792 AML other m 2021-11-16T09:38:43.29
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