Earthquake with magnitude of ML 1.9 on date 28-10-2020 and time 02:42:23 (Italy) in region 1 km SW Pradleves (CN)

A magnitude ML 1.9 earthquake occured in region: 1 km SW Pradleves (CN), on

  • 28-10-2020 01:42:23 (UTC)
  • 28-10-2020 02:42:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.41, 7.28 at 12 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
Castelmagno CN 5 66 821
Cartignano CN 8 190 1011
Montemale di Cuneo CN 8 241 1252
Valgrana CN 9 786 2038
San Damiano Macra CN 9 430 2468
Roccabruna CN 9 1585 4053
Dronero CN 10 7035 11088
Demonte CN 11 2003 13091
Celle di Macra CN 11 100 13191
Valloriate CN 11 109 13300
Aisone CN 12 248 13548
Villar San Costanzo CN 12 1547 15095
Rittana CN 12 109 15204
Caraglio CN 12 6836 22040
Macra CN 13 59 22099
Bernezzo CN 13 4104 26203
Gaiola CN 13 582 26785
Moiola CN 14 234 27019
Vinadio CN 14 644 27663
Marmora CN 15 68 27731
Roccasparvera CN 15 741 28472
Cervasca CN 16 5013 33485
Stroppo CN 16 103 33588
Valmala CN 16 52 33640
Canosio CN 16 80 33720
Vignolo CN 17 2600 36320
Melle CN 17 292 36612
Sambuco CN 18 92 36704
Valdieri CN 18 935 37639
Frassino CN 18 265 37904
Brossasco CN 19 1084 38988
Prazzo CN 19 170 39158
Borgo San Dalmazzo CN 19 12468 51626
Rossana CN 19 908 52534
Venasca CN 20 1437 53971
Busca CN 20 10181 64152
Roccavione CN 20 2761 66913

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km W of Cuneo (56081 inhabitants)
73 Km SW of Moncalieri (57294 inhabitants)
77 Km NW of Sanremo (54807 inhabitants)
81 Km SW of Torino (890529 inhabitants)
92 Km SW of Asti (76202 inhabitants)
97 Km W of Savona (61345 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2020-10-28
01:42:23
44.41 7.28 12 2020-10-28
02:21:59
Sala Sismica INGV-Roma 84193801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-28 01:42:23 ± 0.15
Latitude 44.41 ± 0.01
Longitude 7.28 ± 0.02
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84193801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2038
Semi-minor axis of confidence ellipse (meter) 566
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 232
Circular confidence region, given by single value of horizontal uncertainty (meter) 2040
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 29
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.20869
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 84193801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 02:21:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2020-10-28T01:44:04.41 3.0 undecidable manual Sn 5.33 0
IV.RIBO.EHZ.01 2020-10-28T01:43:15.21 3.0 undecidable manual Pg 12.21 0
IV.ATMI.HHZ. 2020-10-28T01:43:14.23 3.0 undecidable manual Pn 2.48 0
IV.NDIM.HHZ. 2020-10-28T01:43:02.42 3.0 positive manual Pg 6.35 0
IV.MOCL.EHZ. 2020-10-28T01:43:00.88 3.0 undecidable manual Pn 2.04 0
IV.IMI.HHZ. 2020-10-28T01:42:45.41 0.6 undecidable manual S 138 0.6682 91 -0.66 18
RD.ORIF.BHZ. 2020-10-28T01:42:44.89 0.3 undecidable manual P 298 1.1143 90 0.59 63
GU.RORO.HHZ. 2020-10-28T01:42:44.58 0.6 undecidable manual S 117 0.6394 91 -0.67 22
GU.CIRO.HHZ. 2020-10-28T01:42:43.79 0.3 undecidable manual P 10 1.2087 90 -2.13 16
GU.PCP.HHZ. 2020-10-28T01:42:41.03 0.1 undecidable manual P 81 0.9155 90 0.13 82
GU.ROTM.HHZ. 2020-10-28T01:42:41.31 0.1 undecidable manual P 60 0.8831 91 0.96 76
IV.QLNO.HHZ. 2020-10-28T01:42:38.57 0.3 undecidable manual P 96 0.7698 91 0.15 63
GU.GBOS.HHZ. 2020-10-28T01:42:38.65 0.6 undecidable manual S 112 0.438 91 -0.6 24
MN.BNI.HHZ. 2020-10-28T01:42:38.57 0.3 undecidable manual P 327 0.7689 91 0.17 65
GU.CANO.HHZ. 2020-10-28T01:42:37.56 0.1 undecidable manual P 106 0.7177 91 0.04 81
GU.RORO.HHZ. 2020-10-28T01:42:36.11 0.1 undecidable manual P 117 0.6394 91 -0.08 76
GU.BHB.HHZ. 2020-10-28T01:42:36.98 0.6 undecidable manual S 359 0.4254 91 -1.9 13
IV.IMI.HHZ. 2020-10-28T01:42:36.68 0.3 undecidable manual P 138 0.6682 91 0.01 56
GU.RSP.HHZ. 2020-10-28T01:42:36.59 0.3 undecidable manual P 359 0.7374 91 -1.27 37
GU.RRL.HHZ. 2020-10-28T01:42:35.63 0.1 undecidable manual P 326 0.6151 91 -0.14 82
FR.SAOF.HHZ.00 2020-10-28T01:42:33.09 0.3 undecidable manual P 155 0.4685 91 -0.17 51
GU.ENR.HHZ. 2020-10-28T01:42:32.06 0.6 undecidable manual S 150 0.2113 94 -0.48 41
GU.GBOS.HHZ. 2020-10-28T01:42:32.67 0.1 undecidable manual P 112 0.438 91 -0.06 81
GU.BHB.HHZ. 2020-10-28T01:42:31.69 0.1 undecidable manual P 359 0.4254 91 -0.83 67
GU.STV.HHZ. 2020-10-28T01:42:31.03 0.3 undecidable manual S 168 0.1691 98 -0.27 70
GU.PZZ.HHZ. 2020-10-28T01:42:30.52 0.3 undecidable manual S 310 0.1493 101 -0.2 66
GU.STV.HHZ. 2020-10-28T01:42:28.34 0.1 undecidable manual P 168 0.1691 98 0.2 100
GU.ENR.HHZ. 2020-10-28T01:42:28.87 0.1 undecidable manual P 150 0.2113 94 0.01 98
GU.PZZ.HHZ. 2020-10-28T01:42:27.97 0.1 undecidable manual P 310 0.1493 101 0.16 88
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHE. ML:2.7 0.004155 0.2 AML other m 2020-10-28T01:42:30.79
GU.PZZ.HHN. ML:2.7 0.004405 0.42 AML other m 2020-10-28T01:42:30.95
GU.STV.HHN. ML:2 0.0007835 0.1 AML other m 2020-10-28T01:42:31.19
GU.STV.HHE. ML:2.1 0.0009305 0.28 AML other m 2020-10-28T01:42:31.31
GU.ENR.HHN. ML:2.4 0.001705 0.06 AML other m 2020-10-28T01:42:32.44
GU.ENR.HHE. ML:2.3 0.001119 0.06 AML other m 2020-10-28T01:42:32.85
GU.GBOS.HHE. ML:2.1 0.0003635 0.26 AML other m 2020-10-28T01:42:38.97
GU.GBOS.HHN. ML:2 0.0002905 0.32 AML other m 2020-10-28T01:42:39.00
FR.SAOF.HHN.00 ML:1.5 8.565E-5 0.48 AML other m 2020-10-28T01:42:40.44
IV.QLNO.HHN. ML:1.7 5.935E-5 0.48 AML other m 2020-10-28T01:42:40.69
FR.SAOF.HHE.00 ML:1.6 0.0001014 0.64 AML other m 2020-10-28T01:42:42.06
GU.RRL.HHN. ML:1.5 6.045E-5 0.94 AML other m 2020-10-28T01:42:44.23
GU.RRL.HHE. ML:1.6 6.8E-5 0.14 AML other m 2020-10-28T01:42:45.14
IV.IMI.HHN. ML:1.9 0.0001139 0.98 AML other m 2020-10-28T01:42:45.25
IV.IMI.HHE. ML:1.8 0.0001023 0.54 AML other m 2020-10-28T01:42:45.80
GU.CANO.HHN. ML:2 0.0001305 0.22 AML other m 2020-10-28T01:42:49.85
GU.CANO.HHE. ML:2.1 0.000174 1.64 AML other m 2020-10-28T01:42:49.86
IV.QLNO.HHE. ML:1.7 5.995E-5 1.16 AML other m 2020-10-28T01:42:50.69
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download