Earthquake with magnitude of ML 0.9 on date 01-04-2020 and time 11:55:45 (Italy) in region 3 km SW Robilante (CN)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Robilante (CN), on

  • 01-04-2020 09:55:45 (UTC)
  • 01-04-2020 11:55:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.27, 7.5 at 8 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
Robilante CN 3 2306 2306
Roaschia CN 3 107 2413
Vernante CN 4 1178 3591
Roccavione CN 5 2761 6352
Borgo San Dalmazzo CN 6 12468 18820
Boves CN 8 9835 28655
Valdieri CN 8 935 29590
Entracque CN 9 774 30364
Roccasparvera CN 9 741 31105
Vignolo CN 10 2600 33705
Limone Piemonte CN 10 1485 35190
Gaiola CN 10 582 35772
Moiola CN 10 234 36006
Peveragno CN 11 5543 41549
Rittana CN 12 109 41658
Valloriate CN 12 109 41767
Cervasca CN 13 5013 46780
Bernezzo CN 14 4104 50884
Cuneo CN 14 56081 106965
Chiusa di Pesio CN 15 3676 110641
Beinette CN 16 3423 114064
Demonte CN 17 2003 116067
Caraglio CN 17 6836 122903
Valgrana CN 18 786 123689
Pianfei CN 20 2202 125891

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SW of Cuneo (56081 inhabitants)
55 Km NW of Sanremo (54807 inhabitants)
78 Km W of Savona (61345 inhabitants)
82 Km S of Moncalieri (57294 inhabitants)
89 Km SW of Asti (76202 inhabitants)
90 Km S of Torino (890529 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
Rev 100 ML 0.9 2020-04-01
09:55:45
44.27 7.5 8 2020-04-01
10:03:35
Sala Sismica INGV-Roma 77753791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-01 09:55:45 ± 0.09
Latitude 44.27 ± 0.01
Longitude 7.50 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77753791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 921
Semi-minor axis of confidence ellipse (meter) 491
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 196
Circular confidence region, given by single value of horizontal uncertainty (meter) 920
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.58546
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 77753791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-01 10:03:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHE. 2020-04-01T09:56:05.51 0.6 undecidable manual S 343 0.5855 50 -0.92 35
GU.PZZ.HHZ. 2020-04-01T09:55:59.54 0.3 undecidable manual S 310 0.3597 50 -0.2 69
GU.BHB.HHE. 2020-04-01T09:55:57.95 0.3 undecidable manual P 343 0.5855 50 0.19 66
FR.SAOF.HHN.00 2020-04-01T09:55:57.23 0.3 undecidable manual S 172 0.2905 104 -0.19 70
GU.CANO.HHZ. 2020-04-01T09:55:57.15 0.1 undecidable manual P 97 0.5315 50 0.31 87
GU.GBOS.HHZ. 2020-04-01T09:55:55.46 0.6 undecidable manual S 98 0.2455 106 -0.28 46
GU.PZZ.HHZ. 2020-04-01T09:55:54.20 0.1 undecidable manual P 310 0.3597 50 0.31 90
FR.SAOF.HHN.00 2020-04-01T09:55:52.47 0.1 undecidable manual P 172 0.2905 104 -0.09 95
GU.GBOS.HHZ. 2020-04-01T09:55:51.68 0.1 undecidable manual P 98 0.2455 106 0.1 96
GU.STV.HHZ. 2020-04-01T09:55:51.67 0.3 undecidable manual S 257 0.1277 119 0.14 73
GU.STV.HHZ. 2020-04-01T09:55:49.16 0.1 undecidable manual P 257 0.1277 119 0 100
GU.ENR.HHZ. 2020-04-01T09:55:49.87 0.3 undecidable manual S 230 0.0746 133 0.02 76
GU.ENR.HHZ. 2020-04-01T09:55:48.09 0.1 undecidable manual P 230 0.0746 133 -0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHN. ML:0.9 9.42E-5 0.86 AML other m 2020-04-01T09:55:52.81
GU.STV.HHE. ML:1 0.00010215 1.08 AML other m 2020-04-01T09:55:52.86
GU.GBOS.HHN. ML:0.9 4.32E-5 1.14 AML other m 2020-04-01T09:55:56.36
GU.GBOS.HHE. ML:1 5.455E-5 1.08 AML other m 2020-04-01T09:55:58.75
GU.ENR.HHE. ML:1 0.000170179715 0.1792 AML other m 2020-04-01T09:55:50.92
GU.ENR.HHN. ML:0.8 0.000110835 0.16 AML other m 2020-04-01T09:55:50.07
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