Earthquake with magnitude of ML 0.9 on date 16-09-2020 and time 13:03:24 (Italy) in region 3 km E Roaschia (CN)

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

  • 16-09-2020 11:03:24 (UTC)
  • 16-09-2020 13:03:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.26, 7.49 at 6 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
Roaschia CN 3 107 107
Vernante CN 4 1178 1285
Robilante CN 4 2306 3591
Roccavione CN 6 2761 6352
Borgo San Dalmazzo CN 8 12468 18820
Entracque CN 8 774 19594
Valdieri CN 8 935 20529
Boves CN 9 9835 30364
Limone Piemonte CN 9 1485 31849
Roccasparvera CN 10 741 32590
Moiola CN 11 234 32824
Gaiola CN 11 582 33406
Vignolo CN 11 2600 36006
Rittana CN 12 109 36115
Peveragno CN 13 5543 41658
Valloriate CN 13 109 41767
Cervasca CN 14 5013 46780
Bernezzo CN 15 4104 50884
Cuneo CN 16 56081 106965
Chiusa di Pesio CN 17 3676 110641
Demonte CN 17 2003 112644
Beinette CN 17 3423 116067
Caraglio CN 18 6836 122903
Valgrana CN 19 786 123689

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Cuneo (56081 inhabitants)
54 Km NW of Sanremo (54807 inhabitants)
79 Km W of Savona (61345 inhabitants)
84 Km S of Moncalieri (57294 inhabitants)
91 Km SW of Asti (76202 inhabitants)
92 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
Reviewed
Rev100
ML 0.9 2020-09-16
11:03:24
44.26 7.49 7 2020-09-16
11:13:04
Sala Sismica INGV-Roma 82952581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-16 11:03:24 ± 0.1
Latitude 44.26 ± 0.01
Longitude 7.49 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82952581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 587
Semi-minor axis of confidence ellipse (meter) 439
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.59625
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
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 82952581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-16 11:13:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHE. 2020-09-16T11:03:45.14 0.3 undecidable manual S 344 0.5963 50 -0.65 58
GU.BURY.HHE. 2020-09-16T11:03:42.30 0.1 undecidable manual S 174 0.4811 50 -0.07 92
GU.MGRO.HHE. 2020-09-16T11:03:36.50 0.3 undecidable manual S 134 0.3148 101 -0.48 66
GU.BHB.HHE. 2020-09-16T11:03:36.87 0.1 undecidable manual P 344 0.5963 50 0.01 91
FR.SAOF.HHZ.00 2020-09-16T11:03:35.40 0.6 undecidable manual S 171 0.2788 102 -0.22 47
GU.BURY.HHE. 2020-09-16T11:03:35.53 0.1 undecidable manual P 174 0.4811 50 0.65 79
GU.GBOS.HHZ. 2020-09-16T11:03:34.80 0.6 undecidable manual S 94 0.2491 103 0.29 46
GU.PZZ.HHE. 2020-09-16T11:03:33.27 0.1 undecidable manual P 312 0.3642 99 0.42 88
FR.SAOF.HHZ.00 2020-09-16T11:03:31.05 0.3 undecidable manual P 171 0.2788 102 0.07 72
GU.MGRO.HHE. 2020-09-16T11:03:31.72 0.3 undecidable manual P 134 0.3148 101 -0.05 72
GU.GBOS.HHZ. 2020-09-16T11:03:30.39 0.1 undecidable manual P 94 0.2491 103 0.04 97
GU.STV.HHZ. 2020-09-16T11:03:29.50 0.6 undecidable manual S 262 0.1205 116 -0.31 47
GU.ENR.HHZ. 2020-09-16T11:03:28.00 0.3 undecidable manual S 236 0.0621 133 0.05 75
GU.STV.HHZ. 2020-09-16T11:03:27.56 0.6 undecidable manual P 262 0.1205 116 -0.07 49
GU.ENR.HHZ. 2020-09-16T11:03:26.48 0.1 undecidable manual P 236 0.0621 133 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:0 0.0003053423 0.3456 AML other m 2020-09-16T11:03:29.96
GU.ENR.HHN. ML:0 0.0003799516 0.4992 AML other m 2020-09-16T11:03:28.56
GU.STV.HHE. ML:0.7 6.4216635E-5 0.7424 AML other m 2020-09-16T11:03:33.14
GU.STV.HHN. ML:0.9 9.106534E-5 0.6208 AML other m 2020-09-16T11:03:32.03
GU.GBOS.HHE. ML:0.7 3.2281065E-5 0.32 AML other m 2020-09-16T11:03:35.85
GU.GBOS.HHN. ML:0.9 4.6754645E-5 0.4032 AML other m 2020-09-16T11:03:36.47
FR.SAOF.HHE.00 ML:1.1 5.8544485E-5 0.7616 AML other m 2020-09-16T11:03:36.71
FR.SAOF.HHN.00 ML:0.9 3.5726865E-5 0.4608 AML other m 2020-09-16T11:03:37.77
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