Earthquake with magnitude of ML 0.8 on date 17-10-2021 and time 20:15:36 (Italy) in region 1 km NE Pradleves (CN)

A magnitude ML 0.8 earthquake occured in region: 1 km NE Pradleves (CN), on

  • 17-10-2021 18:15:36 (UTC)
  • 17-10-2021 20:15:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.431, 7.288 at 9 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Pradleves CN 1 250 250
Monterosso Grana CN 4 505 755
Cartignano CN 5 190 945
Castelmagno CN 6 66 1011
Roccabruna CN 7 1585 2596
Montemale di Cuneo CN 7 241 2837
San Damiano Macra CN 7 430 3267
Dronero CN 7 7035 10302
Valgrana CN 8 786 11088
Villar San Costanzo CN 10 1547 12635
Celle di Macra CN 10 100 12735
Caraglio CN 11 6836 19571
Macra CN 12 59 19630
Valloriate CN 12 109 19739
Rittana CN 13 109 19848
Bernezzo CN 13 4104 23952
Demonte CN 13 2003 25955
Valmala CN 14 52 26007
Aisone CN 14 248 26255
Gaiola CN 14 582 26837
Moiola CN 15 234 27071
Melle CN 15 292 27363
Cervasca CN 15 5013 32376
Stroppo CN 15 103 32479
Marmora CN 16 68 32547
Roccasparvera CN 16 741 33288
Frassino CN 16 265 33553
Vinadio CN 16 644 34197
Vignolo CN 17 2600 36797
Canosio CN 17 80 36877
Brossasco CN 17 1084 37961
Rossana CN 17 908 38869
Venasca CN 17 1437 40306
Busca CN 18 10181 50487
Sampeyre CN 18 1022 51509
Valdieri CN 19 935 52444
Isasca CN 19 76 52520
Prazzo CN 19 170 52690
Borgo San Dalmazzo CN 20 12468 65158
Sambuco CN 20 92 65250
Elva CN 20 97 65347

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Cuneo (56081 inhabitants)
71 Km SW of Moncalieri (57294 inhabitants)
78 Km SW of Torino (890529 inhabitants)
79 Km NW of Sanremo (54807 inhabitants)
89 Km SW of Asti (76202 inhabitants)
96 Km W of Savona (61345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.8 2021-10-17
18:15:36
44.4307 7.2883 9 2021-10-17
18:26:18
Sala Sismica INGV-Roma 96693631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-17 18:15:36 ± 0.13
Latitude 44.4307 ± 0.0135
Longitude 7.2883 ± 0.0277
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96693631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2512
Semi-minor axis of confidence ellipse (meter) 646
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 2510
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 26
Number of defining phases 17
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
Epicentral distance of station farthest from the epicenter (degree) 0.76262
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 96693631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-17 18:26:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BRSN.HNZ. 2021-10-17T18:17:23.32 3.0 undecidable manual Sg -0.26 0
IV.FIR.HHZ. 2021-10-17T18:17:10.43 3.0 undecidable manual Sg 1.06 0
IV.PP3.EHZ. 2021-10-17T18:16:53.35 3.0 undecidable manual Pn 8.96 0
IV.ARVD.HHZ. 2021-10-17T18:16:53.60 3.0 negative manual Pg 16.08 0
IV.SENA.HHZ. 2021-10-17T18:16:46.05 3.0 undecidable manual Pn 19.059999 0
IV.VARE.HHZ. 2021-10-17T18:16:33.40 3.0 undecidable manual Sg -7.95 0
IV.ZEN8.EHZ. 2021-10-17T18:16:31.02 3.0 undecidable manual Pg 11.8 0
IV.CADC.EHZ. 2021-10-17T18:16:17.21 3.0 undecidable manual Pn 4.33 0
IV.EUCT.HNZ. 2021-10-17T18:16:03.21 3.0 negative manual P 0.54 0
IV.QLNO.HHZ. 2021-10-17T18:16:01.83 0.3 undecidable manual S 98 0.7626 50 -0.34 66
GU.CANO.HHZ. 2021-10-17T18:16:00.74 0.3 undecidable manual S 108 0.7141 50 0.02 71
GU.IMI.HHZ. 2021-10-17T18:15:59.60 0.3 undecidable manual S 140 0.6772 50 -0.02 72
GU.MGRO.HHZ. 2021-10-17T18:15:55.27 0.3 undecidable manual S 136 0.5378 50 -0.22 71
GU.GBOS.HHZ. 2021-10-17T18:15:51.97 0.3 undecidable manual S 115 0.4371 50 -0.55 67
IV.QLNO.HHZ. 2021-10-17T18:15:51.91 0.1 undecidable manual P 98 0.7626 50 0.51 84
GU.CANO.HHZ. 2021-10-17T18:15:50.96 0.1 undecidable manual P 108 0.7141 50 0.4 87
GU.IMI.HHZ. 2021-10-17T18:15:50.50 1.0 positive manual P 140 0.6772 50 0.58 21
GU.MGRO.HHZ. 2021-10-17T18:15:47.89 0.1 undecidable manual P 136 0.5378 50 0.35 92
GU.ENR.HHZ. 2021-10-17T18:15:45.24 0.3 undecidable manual S 155 0.2212 110 -0.54 70
GU.GBOS.HHZ. 2021-10-17T18:15:45.98 0.1 undecidable manual P 115 0.4371 50 0.15 98
GU.BHB.HHZ. 2021-10-17T18:15:44.59 0.1 undecidable manual P 357 0.4047 50 -0.68 85
GU.STV.HHZ. 2021-10-17T18:15:44.16 0.3 undecidable manual S 172 0.1871 114 -0.41 73
GU.PZZ.HHZ. 2021-10-17T18:15:42.74 0.3 undecidable manual S 302 0.1448 120 -0.35 74
GU.ENR.HHZ. 2021-10-17T18:15:42.18 0.1 undecidable manual P 155 0.2212 110 0.24 100
GU.STV.HHZ. 2021-10-17T18:15:41.53 0.1 undecidable manual P 172 0.1871 114 0.3 99
GU.PZZ.HHZ. 2021-10-17T18:15:40.69 0.1 positive manual P 302 0.1448 120 0.31 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:0.8 5.225E-5 0.42 AML other m 2021-10-17T18:15:44.25
GU.STV.HHN. ML:0.7 4.2076745E-5 0.1024 AML other m 2021-10-17T18:15:44.44
GU.ENR.HHE. ML:1 6.656249E-5 0.0512 AML other m 2021-10-17T18:15:45.68
GU.ENR.HHN. ML:1 6.678417E-5 0.0768 AML other m 2021-10-17T18:15:45.61
GU.BHB.HHN. ML:0 1.283946E-5 0.1664 AML other m 2021-10-17T18:15:51.69
GU.GBOS.HHE. ML:1.1 3.7485775E-5 0.1792 AML other m 2021-10-17T18:15:52.44
GU.GBOS.HHN. ML:1 3.175E-5 0.74 AML other m 2021-10-17T18:15:52.53
GU.BHB.HHE. ML:0 1.390979E-5 0.0768 AML other m 2021-10-17T18:15:52.35
GU.CANO.HHN. ML:1 1.7049675E-5 0.2176 AML other m 2021-10-17T18:16:03.84
GU.CANO.HHE. ML:1 1.54142445E-5 0.1152 AML other m 2021-10-17T18:16:02.51
GU.BHB.HNE. ML:0.5 1.17383405E-5 0.1152 AML other m 2021-10-17T18:15:51.64
GU.BHB.HNN. ML:0.7 1.7461145E-5 0.1792 AML other m 2021-10-17T18:15:51.78
GU.MGRO.HHE. ML:0.7 9.854644E-6 0.1408 AML other m 2021-10-17T18:15:56.13
GU.MGRO.HHN. ML:0.4 7.12581E-6 0.064 AML other m 2021-10-17T18:15:56.34
GU.IMI.HHE. ML:0.8 1.0034168E-5 0.0768 AML other m 2021-10-17T18:16:00.56
GU.IMI.HHN. ML:1 1.4590738E-5 0.0768 AML other m 2021-10-17T18:16:00.21
IV.QLNO.HHE. ML:0.9 7.9140235E-6 0.1152 AML other m 2021-10-17T18:16:03.46
IV.QLNO.HHN. ML:0.6 6.830211E-6 0.1024 AML other m 2021-10-17T18:16:04.53
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