Earthquake with magnitude of ML 1.0 on date 22-09-2019 and time 22:13:04 (UTC) in region 1 km NE Roccabruna (CN)

A magnitude ML 1.0 earthquake occured in region: 1 km NE Roccabruna (CN), on

  • 22-09-2019 22:13:04 (UTC)
  • 23-09-2019 00:13:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.49, 7.35 at 3 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
Roccabruna CN 2 1585 1585
Villar San Costanzo CN 3 1547 3132
Dronero CN 3 7035 10167
Cartignano CN 5 190 10357
Montemale di Cuneo CN 6 241 10598
Valmala CN 6 52 10650
San Damiano Macra CN 7 430 11080
Melle CN 9 292 11372
Rossana CN 9 908 12280
Venasca CN 9 1437 13717
Monterosso Grana CN 9 505 14222
Brossasco CN 9 1084 15306
Valgrana CN 9 786 16092
Pradleves CN 9 250 16342
Caraglio CN 10 6836 23178
Busca CN 10 10181 33359
Frassino CN 11 265 33624
Isasca CN 11 76 33700
Piasco CN 12 2774 36474
Bernezzo CN 13 4104 40578
Brondello CN 13 290 40868
Celle di Macra CN 13 100 40968
Macra CN 13 59 41027
Costigliole Saluzzo CN 14 3375 44402
Castelmagno CN 14 66 44468
Cervasca CN 15 5013 49481
Martiniana Po CN 15 734 50215
Pagno CN 15 585 50800
Gambasca CN 16 371 51171
Tarantasca CN 16 2122 53293
Rittana CN 16 109 53402
Sampeyre CN 16 1022 54424
Castellar CN 16 295 54719
Verzuolo CN 16 6459 61178
Villafalletto CN 16 2925 64103
Valloriate CN 17 109 64212
Vignolo CN 17 2600 66812
Sanfront CN 18 2395 69207
Stroppo CN 18 103 69310
Gaiola CN 18 582 69892
Manta CN 18 3787 73679
Roccasparvera CN 18 741 74420
Rifreddo CN 18 1078 75498
Revello CN 19 4262 79760
Moiola CN 19 234 79994
Centallo CN 19 6954 86948
Cuneo CN 19 56081 143029
Demonte CN 20 2003 145032

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Cuneo (56081 inhabitants)
63 Km SW of Moncalieri (57294 inhabitants)
70 Km SW of Torino (890529 inhabitants)
82 Km SW of Asti (76202 inhabitants)
82 Km NW of Sanremo (54807 inhabitants)
92 Km W of Savona (61345 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 1.0 2019-09-22
22:13:04
44.49 7.35 3 2019-09-22
22:24:13
Sala Sismica INGV-Roma 72673391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-22 22:13:04 ± 0.16
Latitude 44.49 ± 0.01
Longitude 7.35 ± 0.02
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72673391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1022
Semi-minor axis of confidence ellipse (meter) 838
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 1020
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.16637
Epicentral distance of station farthest from the epicenter (degree) 0.7995
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 2
Type of magnitude ML
Reference to an origin 72673391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-22 22:24:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.CANO.HHE. 2019-09-22T22:13:29.45 1.0 undecidable manual S 114 0.6952 50 0.22 23
GU.ROTM.HHZ. 2019-09-22T22:13:20.28 0.6 undecidable manual P 63 0.7995 50 -0.24 44
GU.GBOS.HHZ. 2019-09-22T22:13:20.38 0.6 undecidable manual S 125 0.4299 94 -0.59 44
GU.CANO.HHE. 2019-09-22T22:13:19.65 0.1 undecidable manual P 114 0.6952 50 0.92 72
GU.RORO.HHE. 2019-09-22T22:13:18.10 0.3 undecidable manual P 126 0.6367 50 0.36 67
IV.IMI.HHE. 2019-09-22T22:13:18.61 0.3 undecidable manual P 146 0.6979 50 -0.18 69
GU.BHB.HHE. 2019-09-22T22:13:17.52 0.3 undecidable manual S 350 0.3507 94 -0.41 70
GU.RSP.HHZ. 2019-09-22T22:13:17.49 0.3 undecidable manual P 355 0.661 50 -0.66 61
GU.RRL.HHZ. 2019-09-22T22:13:16.70 0.3 undecidable manual P 318 0.5855 50 -0.16 71
FR.SAOF.HHE.00 2019-09-22T22:13:15.12 0.6 undecidable manual P 164 0.5243 50 -0.7 41
GU.GBOS.HHZ. 2019-09-22T22:13:14.38 0.3 undecidable manual P 125 0.4299 94 0.42 69
GU.ENR.HHZ. 2019-09-22T22:13:14.02 0.3 undecidable manual S 169 0.268 96 -0.73 64
GU.BHB.HHE. 2019-09-22T22:13:12.53 0.3 undecidable manual P 350 0.3507 94 0.32 72
GU.ENR.HHZ. 2019-09-22T22:13:10.57 0.1 undecidable manual P 169 0.268 96 0.2 100
GU.PZZ.HHZ. 2019-09-22T22:13:10.86 0.3 undecidable manual S 276 0.1664 99 -0.03 79
GU.PZZ.HHZ. 2019-09-22T22:13:08.77 0.3 undecidable manual P 276 0.1664 99 0.63 68
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:1.2 5.0099475E-5 0.1792 AML other m 2019-09-22T22:13:20.71
GU.RSP.HHN. ML:0.8 8.5446105E-6 0.1024 AML other m 2019-09-22T22:13:26.48
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