Earthquake with magnitude of ML 1.8 on date 26-10-2020 and time 11:48:02 (UTC) in region 3 km SW Monterosso Grana (CN)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Monterosso Grana (CN), on

  • 26-10-2020 11:48:02 (UTC)
  • 26-10-2020 12:48:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.39, 7.3 at 8 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
Monterosso Grana CN 3 505 505
Pradleves CN 3 250 755
Valgrana CN 7 786 1541
Castelmagno CN 7 66 1607
Montemale di Cuneo CN 8 241 1848
Valloriate CN 9 109 1957
Demonte CN 9 2003 3960
Rittana CN 9 109 4069
Cartignano CN 9 190 4259
Dronero CN 10 7035 11294
Roccabruna CN 10 1585 12879
Caraglio CN 11 6836 19715
Gaiola CN 11 582 20297
Moiola CN 11 234 20531
Bernezzo CN 11 4104 24635
Aisone CN 11 248 24883
San Damiano Macra CN 11 430 25313
Villar San Costanzo CN 12 1547 26860
Roccasparvera CN 13 741 27601
Cervasca CN 13 5013 32614
Vinadio CN 14 644 33258
Celle di Macra CN 14 100 33358
Vignolo CN 14 2600 35958
Valdieri CN 15 935 36893
Macra CN 15 59 36952
Borgo San Dalmazzo CN 17 12468 49420
Roccavione CN 17 2761 52181
Valmala CN 17 52 52233
Marmora CN 18 68 52301
Roaschia CN 19 107 52408
Stroppo CN 19 103 52511
Entracque CN 19 774 53285
Sambuco CN 19 92 53377
Canosio CN 19 80 53457
Melle CN 19 292 53749
Busca CN 19 10181 63930
Rossana CN 20 908 64838
Frassino CN 20 265 65103

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Cuneo (56081 inhabitants)
74 Km SW of Moncalieri (57294 inhabitants)
75 Km NW of Sanremo (54807 inhabitants)
81 Km SW of Torino (890529 inhabitants)
91 Km SW of Asti (76202 inhabitants)
94 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 1.8 2020-10-26
11:48:02
44.39 7.3 9 2021-02-26
14:56:18
Bollettino Sismico Italiano INGV 86934771
Reviewed
Rev100
ML 1.9 2020-10-26
11:48:02
44.37 7.26 11 2020-10-26
11:59:54
Sala Sismica INGV-Roma 84153221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-26 11:48:02 ± 0.11
Latitude 44.39 ± 0.01
Longitude 7.30 ± 0.02
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86934771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2340
Semi-minor axis of confidence ellipse (meter) 380
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 2340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
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) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.15019
Epicentral distance of station farthest from the epicenter (degree) 1.13764
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 86934771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-08 12:04:56

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 84153221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-26 11:59:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
RD.ORIF.BHE. 2020-10-26T11:48:24.20 0.6 undecidable manual P 298 1.1376 50 0.45 39
GU.LSD.HHN. 2020-10-26T11:48:23.08 1.0 undecidable manual P 354 1.0711 50 0.46 20
GU.PCP.HHE. 2020-10-26T11:48:20.23 0.6 undecidable manual P 80 0.8993 50 0.55 40
GU.ROTM.HHZ. 2020-10-26T11:48:20.55 1.0 undecidable manual P 58 0.875 50 1.29 14
MN.BNI.HHE. 2020-10-26T11:48:18.15 0.6 undecidable manual P 326 0.7923 50 0.31 43
IV.QLNO.HHE. 2020-10-26T11:48:17.46 0.3 undecidable manual P 95 0.75 50 0.34 65
GU.GBOS.HHE. 2020-10-26T11:48:17.30 0.6 undecidable manual S 111 0.4146 50 -0.55 44
GU.CANO.HHE. 2020-10-26T11:48:16.33 0.3 undecidable manual P 105 0.6952 50 0.14 68
GU.RSP.HHZ. 2020-10-26T11:48:16.27 0.3 undecidable manual P 358 0.7536 50 -0.92 53
IV.IMI.HHE. 2020-10-26T11:48:15.24 0.3 undecidable manual P 139 0.6439 50 -0.06 70
GU.RORO.HHE. 2020-10-26T11:48:14.83 0.3 undecidable manual P 117 0.616 50 -0.01 71
GU.GBOS.HHE. 2020-10-26T11:48:11.40 0.3 undecidable manual P 111 0.4146 50 0.02 74
GU.BHB.HHZ. 2020-10-26T11:48:11.20 0.3 undecidable manual P 357 0.4416 50 -0.65 63
GU.ENR.HHZ. 2020-10-26T11:48:10.03 0.3 undecidable manual S 153 0.1853 113 -0.22 74
GU.PZZ.HHZ. 2020-10-26T11:48:09.65 0.3 undecidable manual S 310 0.1736 114 -0.19 75
GU.STV.HHZ. 2020-10-26T11:48:08.73 0.3 undecidable manual S 173 0.1502 117 -0.31 74
GU.ENR.HHZ. 2020-10-26T11:48:07.19 0.3 undecidable manual P 153 0.1853 113 0.19 75
GU.PZZ.HHZ. 2020-10-26T11:48:06.98 0.1 positive manual P 310 0.1736 114 0.22 99
GU.STV.HHZ. 2020-10-26T11:48:06.51 0.1 undecidable manual P 173 0.1502 117 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:1.6 0.0003370413 0.1152 AML other m 2020-10-26T11:48:08.77
GU.STV.HHN. ML:1.5 0.00027110665 0.064 AML other m 2020-10-26T11:48:08.83
GU.PZZ.HHN. ML:1.9 0.00063517965 0.2624 AML other m 2020-10-26T11:48:10.10
GU.PZZ.HHE. ML:1.9 0.000671603 0.1408 AML other m 2020-10-26T11:48:10.22
GU.ENR.HHN. ML:2.1 0.00095404995 0.0576 AML other m 2020-10-26T11:48:10.44
GU.ENR.HHE. ML:1.9 0.0006005062 0.0768 AML other m 2020-10-26T11:48:10.44
GU.BHB.HHN. ML:1 3.2095095E-5 0.1152 AML other m 2020-10-26T11:48:18.93
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