Earthquake with magnitude of ML 1.1 on date 07-04-2020 and time 19:43:20 (Italy) in region 3 km W Roccavione (CN)

A magnitude ML 1.1 earthquake occured in region: 3 km W Roccavione (CN), on

  • 07-04-2020 17:43:20 (UTC)
  • 07-04-2020 19:43:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.31, 7.45 at 11 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
Roccavione CN 3 2761 2761
Roaschia CN 4 107 2868
Borgo San Dalmazzo CN 4 12468 15336
Roccasparvera CN 4 741 16077
Gaiola CN 5 582 16659
Moiola CN 5 234 16893
Robilante CN 5 2306 19199
Valdieri CN 5 935 20134
Vignolo CN 6 2600 22734
Rittana CN 6 109 22843
Valloriate CN 7 109 22952
Entracque CN 8 774 23726
Boves CN 9 9835 33561
Cervasca CN 9 5013 38574
Bernezzo CN 9 4104 42678
Vernante CN 9 1178 43856
Demonte CN 12 2003 45859
Caraglio CN 13 6836 52695
Cuneo CN 13 56081 108776
Valgrana CN 13 786 109562
Peveragno CN 14 5543 115105
Limone Piemonte CN 15 1485 116590
Monterosso Grana CN 15 505 117095
Montemale di Cuneo CN 16 241 117336
Beinette CN 17 3423 120759
Aisone CN 18 248 121007
Pradleves CN 18 250 121257
Chiusa di Pesio CN 18 3676 124933
Dronero CN 19 7035 131968

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SW of Cuneo (56081 inhabitants)
60 Km NW of Sanremo (54807 inhabitants)
80 Km S of Moncalieri (57294 inhabitants)
82 Km W of Savona (61345 inhabitants)
87 Km S of Torino (890529 inhabitants)
89 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
Rev 100 ML 1.1 2020-04-07
17:43:20
44.31 7.45 11 2020-04-07
17:49:34
Sala Sismica INGV-Roma 77989761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-07 17:43:20 ± 0.16
Latitude 44.31 ± 0.01
Longitude 7.45 ± 0.02
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77989761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1510
Semi-minor axis of confidence ellipse (meter) 736
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 227
Circular confidence region, given by single value of horizontal uncertainty (meter) 1510
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 19
Number of defining phases 19
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) 0.57197
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 77989761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-07 17:49:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.PCP.HHZ. 2020-04-07T17:43:47.44 0.6 undecidable manual S 100
GU.CANO.HHZ. 2020-04-07T17:43:39.06 0.3 undecidable manual S 100 0.572 50 -0.49 64
GU.RORO.HHZ. 2020-04-07T17:43:37.04 0.3 undecidable manual S 113 0.482 50 0.16 70
IV.IMI.HHZ. 2020-04-07T17:43:37.42 0.3 undecidable manual S 141 0.5072 50 -0.21 69
GU.BHB.HHZ. 2020-04-07T17:43:37.93 0.3 undecidable manual S 346 0.5459 50 -0.84 56
FR.SAOF.HHZ.00 2020-04-07T17:43:32.00 0.3 undecidable manual S 167 0.3283 50 -0.32 70
GU.BHB.HHZ. 2020-04-07T17:43:31.01 0.1 undecidable manual P 346 0.5459 50 0.15 92
GU.CANO.HHZ. 2020-04-07T17:43:31.85 0.1 undecidable manual P 100 0.572 50 0.54 84
GU.PZZ.HHZ. 2020-04-07T17:43:31.66 0.3 undecidable manual S 310 0.3121 50 -0.19 72
IV.IMI.HHZ. 2020-04-07T17:43:30.72 0.1 undecidable manual P 141 0.5072 50 0.52 86
GU.GBOS.HHZ. 2020-04-07T17:43:30.09 0.3 undecidable manual S 103 0.286 50 -1 55
GU.RORO.HHZ. 2020-04-07T17:43:30.14 0.3 undecidable manual P 113 0.482 50 0.37 67
GU.PZZ.HHZ. 2020-04-07T17:43:27.22 0.1 undecidable manual P 310 0.3121 50 0.36 93
FR.SAOF.HHZ.00 2020-04-07T17:43:27.46 0.1 undecidable manual P 167 0.3283 50 0.33 93
GU.GBOS.HHZ. 2020-04-07T17:43:26.67 1.0 undecidable manual P 103 0.286 50 0.25 24
GU.STV.HHZ. 2020-04-07T17:43:25.19 0.1 undecidable manual S 236 0.107 132 -0.4 96
GU.ENR.HHZ. 2020-04-07T17:43:24.41 0.1 undecidable manual S 195 0.0818 140 -0.49 94
GU.ENR.HHZ. 2020-04-07T17:43:23.06 0.1 undecidable manual P 195 0.0818 140 0.21 100
GU.STV.HHZ. 2020-04-07T17:43:23.63 0.1 undecidable manual P 236 0.107 132 0.38 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:2.4 0.003665 0.06 AML other m 2020-04-07T17:43:24.51
GU.ENR.HHN. ML:2.2 0.001885 0.04 AML other m 2020-04-07T17:43:24.56
GU.STV.HHE. ML:1.1 0.000145 0.06 AML other m 2020-04-07T17:43:25.29
GU.STV.HHN. ML:0.9 8.64E-5 0.24 AML other m 2020-04-07T17:43:25.26
GU.GBOS.HHE. ML:1 3.855E-5 0.14 AML other m 2020-04-07T17:43:30.37
GU.GBOS.HHN. ML:0.9 3.505E-5 0.22 AML other m 2020-04-07T17:43:30.83
GU.PZZ.HHE. ML:1.3 7.675E-5 1.62 AML other m 2020-04-07T17:43:32.18
GU.PZZ.HHN. ML:1.3 8.46E-5 0.82 AML other m 2020-04-07T17:43:32.65
GU.RORO.HHN. ML:1.2 3.786309E-5 0.2176 AML other m 2020-04-07T17:43:37.42
GU.BHB.HHN. ML:0.9 1.5173225E-5 0.1792 AML other m 2020-04-07T17:43:39.55
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