Earthquake with magnitude of ML 1.2 on date 04-04-2020 and time 15:38:55 (UTC) in region Valloriate (CN)

A magnitude ML 1.2 earthquake occured in region: Valloriate (CN), on

  • 04-04-2020 15:38:55 (UTC)
  • 04-04-2020 17:38:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.34, 7.38 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
Valloriate CN 0 109 109
Rittana CN 2 109 218
Moiola CN 3 234 452
Gaiola CN 3 582 1034
Roccasparvera CN 5 741 1775
Demonte CN 7 2003 3778
Bernezzo CN 7 4104 7882
Valdieri CN 7 935 8817
Valgrana CN 8 786 9603
Vignolo CN 8 2600 12203
Monterosso Grana CN 9 505 12708
Cervasca CN 9 5013 17721
Roccavione CN 9 2761 20482
Borgo San Dalmazzo CN 9 12468 32950
Caraglio CN 10 6836 39786
Roaschia CN 10 107 39893
Montemale di Cuneo CN 11 241 40134
Entracque CN 11 774 40908
Pradleves CN 11 250 41158
Robilante CN 12 2306 43464
Aisone CN 13 248 43712
Dronero CN 14 7035 50747
Boves CN 14 9835 60582
Castelmagno CN 15 66 60648
Roccabruna CN 15 1585 62233
Cuneo CN 15 56081 118314
Villar San Costanzo CN 16 1547 119861
Vinadio CN 16 644 120505
Cartignano CN 17 190 120695
Vernante CN 17 1178 121873
San Damiano Macra CN 19 430 122303
Peveragno CN 19 5543 127846

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km W of Cuneo (56081 inhabitants)
67 Km NW of Sanremo (54807 inhabitants)
77 Km SW of Moncalieri (57294 inhabitants)
85 Km SW of Torino (890529 inhabitants)
88 Km W of Savona (61345 inhabitants)
90 Km SW of Asti (76202 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 1.2 2020-04-04
15:38:55
44.34 7.37 8 2020-04-04
15:50:54
Sala Sismica INGV-Roma 77881161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-04 15:38:55 ± 0.06
Latitude 44.34 ± 0.01
Longitude 7.37 ± 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 77881161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1040
Semi-minor axis of confidence ellipse (meter) 191
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.11961
Epicentral distance of station farthest from the epicenter (degree) 0.86065
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 77881161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-04 15:50:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.RORO.HHZ. 2020-04-04T15:39:14.19 0.6 undecidable manual S 115 0.5459 50 -0.15 60
GU.BHB.HHZ. 2020-04-04T15:39:12.71 1.0 undecidable manual S 351 0.4991 50 -0.25 30
GU.PCP.HHE. 2020-04-04T15:39:11.50 1.0 undecidable manual P 76 0.8589 50 -0.04 29
IV.MONC.HHE. 2020-04-04T15:39:11.30 1.0 undecidable manual P 28 0.8301 50 0.25 28
GU.ROTM.HHE. 2020-04-04T15:39:11.43 1.0 undecidable manual P 54 0.8607 50 -0.15 28
GU.GBOS.HHZ. 2020-04-04T15:39:08.30 1.0 undecidable manual S 107 0.3471 50 -0.17 31
IV.QLNO.HHZ. 2020-04-04T15:39:08.74 1.0 undecidable manual P 91 0.6943 50 0.01 30
GU.BURY.HHE. 2020-04-04T15:39:07.00 1.0 undecidable manual P 167 0.5738 50 0.33 29
GU.CANO.HHZ. 2020-04-04T15:39:07.62 1.0 undecidable manual P 102 0.6313 50 -0.03 30
GU.RORO.HHZ. 2020-04-04T15:39:06.52 1.0 undecidable manual P 115 0.5459 50 0.33 29
IV.IMI.HHE. 2020-04-04T15:39:06.50 1.0 undecidable manual P 139 0.5693 50 -0.09 30
GU.BHB.HHZ. 2020-04-04T15:39:05.63 0.6 undecidable manual P 351 0.4991 50 0.24 60
GU.PZZ.HHZ. 2020-04-04T15:39:04.69 0.6 undecidable manual S 312 0.2473 106 -0.28 62
FR.SAOF.HHZ.00 2020-04-04T15:39:03.17 0.6 undecidable manual P 160 0.3777 50 -0.14 63
GU.GBOS.HHZ. 2020-04-04T15:39:02.86 0.6 undecidable manual P 107 0.3471 50 0.06 64
GU.PZZ.HHZ. 2020-04-04T15:39:01.19 1.0 negative manual P 312 0.2473 106 0.41 30
GU.ENR.HHZ. 2020-04-04T15:39:00.35 0.3 undecidable manual S 164 0.1196 121 -0.08 100
GU.ENR.HHZ. 2020-04-04T15:38:58.46 1.0 undecidable manual P 164 0.1196 121 0.31 32
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:1.4 0.00029239095 0.064 AML other m 2020-04-04T15:39:02.19
GU.ENR.HHN. ML:1.3 0.0002119255 0.0512 AML other m 2020-04-04T15:39:00.79
GU.PZZ.HHE. ML:1.1 7.310253E-5 0.1024 AML other m 2020-04-04T15:39:05.60
GU.PZZ.HHN. ML:1.2 8.3404195E-5 0.1408 AML other m 2020-04-04T15:39:05.47
GU.GBOS.HHE. ML:0.9 2.8549975E-5 0.1408 AML other m 2020-04-04T15:39:07.41
GU.GBOS.HHN. ML:0.8 2.322595E-5 0.128 AML other m 2020-04-04T15:39:08.16
GU.BHB.HHE. ML:1.2 4.0406065E-5 0.0768 AML other m 2020-04-04T15:39:13.50
GU.BHB.HHN. ML:1.2 4.233158E-5 0.1024 AML other m 2020-04-04T15:39:13.59
GU.RORO.HHE. ML:1.7 0.000101473645 1.4336 AML other m 2020-04-04T15:39:14.64
GU.RORO.HHN. ML:1.3 4.603494E-5 0.064 AML other m 2020-04-04T15:39:32.70
GU.CANO.HHE. ML:1.8 9.5376675E-5 1.2032 AML other m 2020-04-04T15:39:26.81
GU.CANO.HHN. ML:1.1 2.0104405E-5 0.3456 AML other m 2020-04-04T15:39:24.54
IV.QLNO.HHE. ML:1.1 2.1510405E-5 1.3568 AML other m 2020-04-04T15:39:33.39
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