Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 17-09-2019 and time 18:02:29 (Italy) in region 1 km SW Rittana (CN)

A magnitude ML 1.6 earthquake occured in region: 1 km SW Rittana (CN), on

  • 17-09-2019 16:02:29 (UTC)
  • 17-09-2019 18:02:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3440, 7.3930 at 17 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Rittana CN 1 109 109
Valloriate CN 2 109 218
Gaiola CN 2 582 800
Moiola CN 3 234 1034
Roccasparvera CN 4 741 1775
Bernezzo CN 6 4104 5879
Vignolo CN 7 2600 8479
Valdieri CN 7 935 9414
Valgrana CN 7 786 10200
Cervasca CN 8 5013 15213
Borgo San Dalmazzo CN 8 12468 27681
Roccavione CN 8 2761 30442
Demonte CN 8 2003 32445
Caraglio CN 9 6836 39281
Monterosso Grana CN 9 505 39786
Roaschia CN 10 107 39893
Montemale di Cuneo CN 11 241 40134
Robilante CN 11 2306 42440
Entracque CN 11 774 43214
Pradleves CN 12 250 43464
Boves CN 13 9835 53299
Cuneo CN 14 56081 109380
Dronero CN 14 7035 116415
Aisone CN 14 248 116663
Roccabruna CN 15 1585 118248
Villar San Costanzo CN 16 1547 119795
Vernante CN 16 1178 120973
Castelmagno CN 16 66 121039
Cartignano CN 17 190 121229
Vinadio CN 18 644 121873
Peveragno CN 18 5543 127416
San Damiano Macra CN 19 430 127846
Busca CN 20 10181 138027

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km W of Cuneo (56081 inhabitants)
66 Km NW of Sanremo (54807 inhabitants)
77 Km SW of Moncalieri (57294 inhabitants)
84 Km S of Torino (890529 inhabitants)
87 Km W of Savona (61345 inhabitants)
89 Km SW of Asti (76202 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.6 2019-09-17
16:02:29		 44.3443 7.3927 17 2020-02-28
16:42:14		 Bollettino Sismico Italiano INGV 74708631
Reviewed
Rev100 		ML 1.5 2019-09-17
16:02:29		 44.3573 7.3952 11 2019-09-17
16:18:35		 Sala Sismica INGV-Roma 72493871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-17 16:02:29 ± 0.16
Latitude 44.3443 ± 0.0081
Longitude 7.3927 ± 0.0163
Depth (km) 17 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74708631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1397
Semi-minor axis of confidence ellipse (meter) 377
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 63
Circular confidence region, given by single value of horizontal uncertainty (meter) 1400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.11961
Epicentral distance of station farthest from the epicenter (degree) 0.84536
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 72493871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-17 16:18:35

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 74708631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-16 13:36:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PCP.HHE. 2019-09-17T16:02:57.10 0.3 undecidable manual S 76 93.8394 94 0.52 60
GU.RSP.HHE. 2019-09-17T16:02:54.30 0.6 undecidable manual S 354 89.7435 94 -1.18 30
GU.RRL.HHE. 2019-09-17T16:02:52.80 0.6 undecidable manual S 324 79.6647 95 0 45
GU.CANO.HHE. 2019-09-17T16:02:49.80 0.6 undecidable manual S 102 68.7756 96 -0.11 44
GU.BURY.HHE. 2019-09-17T16:02:48.40 0.1 undecidable manual S 168 63.6918 97 -0.16 85
IV.IMI.HHE. 2019-09-17T16:02:48.00 0.3 undecidable manual S 140 62.493 97 -0.24 64
GU.RORO.HHE. 2019-09-17T16:02:47.10 0.3 undecidable manual S 115 59.3961 97 -0.33 64
GU.PCP.HHE. 2019-09-17T16:02:46.35 0.1 undecidable manual P 76 93.8394 94 1.42 55
GU.BHB.HHZ. 2019-09-17T16:02:45.30 0.1 undecidable manual S 349 55.4001 98 -1.07 69
GU.RRL.HHE. 2019-09-17T16:02:43.23 0.1 undecidable manual P 324 79.6647 95 0.48 83
GU.RSP.HHE. 2019-09-17T16:02:43.64 0.1 undecidable manual P 354 89.7435 94 -0.65 73
GU.CANO.HHE. 2019-09-17T16:02:41.51 0.1 undecidable manual P 102 68.7756 96 0.43 87
IV.IMI.HHE. 2019-09-17T16:02:40.46 0.1 undecidable manual P 140 62.493 97 0.35 90
GU.BURY.HHE. 2019-09-17T16:02:40.73 0.1 undecidable manual P 168 63.6918 97 0.43 89
GU.GBOS.HHZ. 2019-09-17T16:02:40.90 0.1 undecidable manual S 108 37.3293 103 -0.71 80
GU.PZZ.HHZ. 2019-09-17T16:02:39.30 0.3 undecidable manual S 310 28.3494 110 -0.03 72
GU.RORO.HHE. 2019-09-17T16:02:39.87 0.1 undecidable manual P 115 59.3961 97 0.23 92
GU.BHB.HHZ. 2019-09-17T16:02:38.84 0.1 undecidable manual P 349 55.4001 98 -0.19 90
GU.GBOS.HHZ. 2019-09-17T16:02:36.44 0.1 negative manual P 108 37.3293 103 0.15 96
GU.PZZ.HHZ. 2019-09-17T16:02:35.37 0.1 negative manual P 310 28.3494 110 0.4 91
GU.ENR.HHZ. 2019-09-17T16:02:34.60 0.3 undecidable manual S 170 13.2756 135 -1.26 62
GU.ENR.HHZ. 2019-09-17T16:02:32.83 0.1 negative manual P 170 13.2756 135 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ENR.HHE. ML:0.0 0.0012749999999999999 0.14 AML other m 2019-09-17T16:02:34.83
GU.ENR.HHN. ML:0.0 0.00047050000000000005 0.24 AML other m 2019-09-17T16:02:34.88
GU.PZZ.HHE. ML:0.0 0.00017984149999999998 0.1024 AML other m 2019-09-17T16:02:40.20
GU.PZZ.HHN. ML:0.0 0.00024570555 0.2048 AML other m 2019-09-17T16:02:39.90
GU.GBOS.HHE. ML:0.0 0.000087166555 0.1408 AML other m 2019-09-17T16:02:41.14
GU.BHB.HHN. ML:0.0 0.00004845 0.12 AML other m 2019-09-17T16:02:47.74
GU.BHB.HHE. ML:0.0 0.000043531415 0.0768 AML other m 2019-09-17T16:02:47.75
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download