Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 29-07-2021 and time 14:55:19 (Italy) in region 2 km SW Oncino (CN)

A magnitude ML 0.7 earthquake occured in region: 2 km SW Oncino (CN), on

  • 29-07-2021 12:55:19 (UTC)
  • 29-07-2021 14:55:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6640, 7.1800 at 11 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
Oncino CN 2 76 76
Ostana CN 3 83 159
Crissolo CN 4 168 327
Paesana CN 8 2784 3111
Sampeyre CN 9 1022 4133
Sanfront CN 11 2395 6528
Casteldelfino CN 12 157 6685
Frassino CN 13 265 6950
Pontechianale CN 13 179 7129
Barge CN 13 7774 14903
Rifreddo CN 14 1078 15981
Gambasca CN 14 371 16352
Rorà TO 15 257 16609
Bagnolo Piemonte CN 15 6024 22633
Elva CN 15 97 22730
Martiniana Po CN 15 734 23464
Envie CN 15 2074 25538
Bellino CN 16 109 25647
Melle CN 16 292 25939
Villar Pellice TO 16 1076 27015
Lusernetta TO 17 506 27521
Revello CN 17 4262 31783
Bobbio Pellice TO 17 563 32346
Bibiana TO 17 3442 35788
Luserna San Giovanni TO 18 7395 43183
Brossasco CN 18 1084 44267
Torre Pellice TO 18 4551 48818
Stroppo CN 18 103 48921
Macra CN 18 59 48980
Isasca CN 18 76 49056
Valmala CN 19 52 49108
Brondello CN 19 290 49398
Campiglione Fenile TO 19 1390 50788
Celle di Macra CN 20 100 50888

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NW of Cuneo (56081 inhabitants)
55 Km SW of Moncalieri (57294 inhabitants)
60 Km SW of Torino (890529 inhabitants)
85 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 0.7 2021-07-29
12:55:19		 44.664 7.1802 11 2021-07-29
13:03:12		 Sala Sismica INGV-Roma 93354221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-29 12:55:19 ± 0.14
Latitude 44.6640 ± 0.0054
Longitude 7.1802 ± 0.0164
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93354221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1284
Semi-minor axis of confidence ellipse (meter) 175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 263
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76622
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 93354221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-29 13:03:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.GBOS.HHE. 2021-07-29T12:55:40.75 0.3 undecidable manual S 132 70.1742 50 -0.46 87
GU.ENR.HHZ. 2021-07-29T12:55:36.04 0.3 undecidable manual S 159 51.8037 50 -0.26 94
GU.RSP.HHZ. 2021-07-29T12:55:36.66 0.3 undecidable manual S 7 54.1014 50 -0.26 93
GU.STV.HHZ. 2021-07-29T12:55:34.83 0.3 undecidable manual S 166 47.9187 50 -0.43 91
GU.MGRO.HHE. 2021-07-29T12:55:34.43 0.3 undecidable manual P 144 85.0482 50 -0.08 91
GU.LSD.HHZ. 2021-07-29T12:55:34.02 3.0 undecidable manual P -1.9 0
FR.SAOF.HHE.00 2021-07-29T12:55:33.93 0.6 undecidable manual P 158 80.8635 50 0.07 62
GU.RRL.HHZ. 2021-07-29T12:55:33.18 0.3 undecidable manual S 313 41.9247 50 -0.49 90
GU.GBOS.HHE. 2021-07-29T12:55:32.68 0.3 undecidable manual P 132 70.1742 50 0.46 87
GU.RSP.HHZ. 2021-07-29T12:55:30.36 0.3 undecidable manual P 7 54.1014 50 0.61 86
GU.STV.HHZ. 2021-07-29T12:55:29.29 0.3 undecidable manual P 166 47.9187 50 0.5 90
GU.ENR.HHZ. 2021-07-29T12:55:29.93 0.3 undecidable manual P 159 51.8037 50 0.55 88
GU.RRL.HHZ. 2021-07-29T12:55:28.17 0.3 undecidable manual P 313 41.9247 50 0.31 95
GU.BHB.HHZ. 2021-07-29T12:55:27.30 0.3 undecidable manual S 19 20.0688 50 -0.54 92
GU.PZZ.HHZ. 2021-07-29T12:55:26.83 0.3 undecidable manual S 196 18.1707 120 -0.44 96
GU.PZZ.HHZ. 2021-07-29T12:55:24.43 0.3 undecidable manual P 196 18.1707 120 0.26 100
GU.BHB.HHZ. 2021-07-29T12:55:24.76 0.3 undecidable manual P 19 20.0688 50 0.26 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.1 0.000106617765 0.1984 AML other m 2021-07-29T12:55:27.04
GU.BHB.HHN. ML:0.7 0.00003374615 0.1792 AML other m 2021-07-29T12:55:27.68
GU.BHB.HHE. ML:0.7 0.00003562581 0.1024 AML other m 2021-07-29T12:55:28.00
GU.PZZ.HHE. ML:1.2 0.00012118779999999999 0.16 AML other m 2021-07-29T12:55:28.41
GU.BHB.HNE. ML:0.6 0.000031572789999999996 0.1088 AML other m 2021-07-29T12:55:27.96
GU.BHB.HNN. ML:0.7 0.000038049103 0.0896 AML other m 2021-07-29T12:55:28.21
GU.RRL.HHE. ML:0.5 0.00001181316 0.256 AML other m 2021-07-29T12:55:34.09
GU.RRL.HHN. ML:0.5 0.000011403284999999999 0.2048 AML other m 2021-07-29T12:55:33.30
GU.STV.HHE. ML:0.6 0.000007707384999999999 0.096 AML other m 2021-07-29T12:55:36.14
GU.STV.HHN. ML:0.3 0.000005733799 0.3392 AML other m 2021-07-29T12:55:34.97
GU.ENR.HHE. ML:0.8 0.000016210500000000003 0.1024 AML other m 2021-07-29T12:55:37.21
GU.ENR.HHN. ML:0.6 0.0000106646625 0.064 AML other m 2021-07-29T12:55:37.37
GU.RSP.HHE. ML:0.6 0.0000083321352 0.16 AML other m 2021-07-29T12:55:38.27
GU.RSP.HHN. ML:0.6 0.000011021277999999999 0.1216 AML other m 2021-07-29T12:55:36.73
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