Earthquake with magnitude of ML 0.8 on date 17-09-2019 and time 19:55:10 (Italy) in region 4 km NW Frassino (CN)

A magnitude ML 0.8 earthquake occured in region: 4 km NW Frassino (CN), on

  • 17-09-2019 17:55:10 (UTC)
  • 17-09-2019 19:55:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6, 7.25 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
Frassino CN 4 265 265
Sampeyre CN 5 1022 1287
Melle CN 7 292 1579
Sanfront CN 8 2395 3974
Gambasca CN 9 371 4345
Brossasco CN 10 1084 5429
Oncino CN 10 76 5505
Valmala CN 10 52 5557
Martiniana Po CN 10 734 6291
Paesana CN 10 2784 9075
Rifreddo CN 10 1078 10153
Isasca CN 11 76 10229
Ostana CN 11 83 10312
Macra CN 12 59 10371
San Damiano Macra CN 12 430 10801
Venasca CN 12 1437 12238
Brondello CN 13 290 12528
Revello CN 13 4262 16790
Crissolo CN 13 168 16958
Envie CN 14 2074 19032
Cartignano CN 14 190 19222
Celle di Macra CN 14 100 19322
Elva CN 14 97 19419
Stroppo CN 14 103 19522
Casteldelfino CN 14 157 19679
Pagno CN 15 585 20264
Castellar CN 15 295 20559
Barge CN 16 7774 28333
Roccabruna CN 16 1585 29918
Rossana CN 16 908 30826
Villar San Costanzo CN 17 1547 32373
Piasco CN 17 2774 35147
Dronero CN 17 7035 42182
Pontechianale CN 17 179 42361
Bellino CN 18 109 42470
Verzuolo CN 19 6459 48929
Bagnolo Piemonte CN 19 6024 54953
Manta CN 19 3787 58740
Costigliole Saluzzo CN 19 3375 62115
Marmora CN 20 68 62183
Prazzo CN 20 170 62353

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Cuneo (56081 inhabitants)
57 Km SW of Moncalieri (57294 inhabitants)
63 Km SW of Torino (890529 inhabitants)
83 Km W of Asti (76202 inhabitants)
97 Km NW of Sanremo (54807 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 0.8 2019-09-17
17:55:10
44.6 7.25 11 2019-09-17
18:07:54
Sala Sismica INGV-Roma 72496971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-17 17:55:10 ± 0.18
Latitude 44.60 ± 0.01
Longitude 7.25 ± 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 72496971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1468
Semi-minor axis of confidence ellipse (meter) 624
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 1470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.1304
Epicentral distance of station farthest from the epicenter (degree) 0.55398
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 72496971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-17 18:07:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GBOS.HHZ. 2019-09-17T17:55:28.80 0.6 undecidable manual S 130 0.554 50 -0.49 35
GU.RRL.HHZ. 2019-09-17T17:55:25.61 0.6 undecidable manual S 315 0.4569 50 -0.81 35
GU.ENR.HHZ. 2019-09-17T17:55:23.80 0.6 undecidable manual S 162 0.3921 50 -0.7 35
GU.GBOS.HHZ. 2019-09-17T17:55:21.51 0.3 undecidable manual P 130 0.554 50 0.24 71
GU.RSP.HHZ. 2019-09-17T17:55:21.19 1.0 positive manual P 1 0.5495 50 -0.01 23
GU.RRL.HHZ. 2019-09-17T17:55:20.08 0.1 undecidable manual P 315 0.4569 50 0.46 94
GU.BHB.HHZ. 2019-09-17T17:55:19.68 0.6 undecidable manual S 3 0.2365 50 -0.22 44
GU.ENR.HHZ. 2019-09-17T17:55:18.78 0.1 positive manual P 162 0.3921 50 0.27 100
GU.BHB.HHZ. 2019-09-17T17:55:16.24 1.0 negative manual P 3 0.2365 50 0.39 25
GU.PZZ.HHZ. 2019-09-17T17:55:16.12 0.6 undecidable manual S 225 0.1304 126 -0.43 52
GU.PZZ.HHZ. 2019-09-17T17:55:14.10 0.1 positive manual P 225 0.1304 126 0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1 8.835E-5 1.2 AML other m 2019-09-17T17:55:16.16
GU.PZZ.HHE. ML:1.2 0.0001655 0.22 AML other m 2019-09-17T17:55:16.39
GU.BHB.HHN. ML:0.7 2.82E-5 1.3 AML other m 2019-09-17T17:55:19.75
GU.BHB.HHE. ML:0.8 3.61E-5 0.38 AML other m 2019-09-17T17:55:19.73
GU.ENR.HHN. ML:0.7 1.71E-5 0.22 AML other m 2019-09-17T17:55:24.61
GU.ENR.HHE. ML:0.7 1.745E-5 0.08 AML other m 2019-09-17T17:55:25.01
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