Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 11-08-2019 and time 16:04:13 (Italy) in region 7 km W Oulx (TO)

A magnitude ML 1.9 earthquake occured in region: 7 km W Oulx (TO), on

  • 11-08-2019 14:04:13 (UTC)
  • 11-08-2019 16:04:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.0270, 6.7500 at 9 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
Oulx TO 7 3307 3307
Bardonecchia TO 7 3215 6522
Sauze d'Oulx TO 9 1109 7631
Cesana Torinese TO 9 967 8598
Claviere TO 10 214 8812
Salbertrand TO 12 596 9408
Sestriere TO 13 929 10337
Sauze di Cesana TO 13 244 10581
Pragelato TO 15 776 11357
Exilles TO 16 273 11630

Municipalities with at least 50000 inhabitants

An earthquake occurred to
73 Km W of Torino (890529 inhabitants)
74 Km W of Moncalieri (57294 inhabitants)
95 Km NW of Cuneo (56081 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 1.9 2019-08-11
14:04:13		 45.0267 6.75 9 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73247891
Reviewed
Rev100 		ML 2.0 2019-08-11
14:04:13		 45.0108 6.7033 10 2019-08-11
14:17:04		 Sala Sismica INGV-Roma 71381871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-11 14:04:13 ± 0.12
Latitude 45.0267 ± 0.0063
Longitude 6.7500 ± 0.0216
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73247891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1747
Semi-minor axis of confidence ellipse (meter) 666
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 1750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.33369
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 25
Type of magnitude ML
Reference to an origin 73247891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-14 10:10:22

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 71381871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-11 14:17:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.GIMEL.HHE. 2019-08-11T14:04:43.14 3.0 undecidable manual P 1.64 0
GU.TRAV.HHZ. 2019-08-11T14:04:41.69 0.6 undecidable manual S 55 94.6386 50 0.08 43
MN.BURY.HHZ. 2019-08-11T14:04:39.50 3.0 undecidable manual P 0
IV.QLNO.HHZ. 2019-08-11T14:04:38.29 0.3 undecidable manual P 121 148.0407 50 0.33 54
CH.MMK.HHZ. 2019-08-11T14:04:38.21 1.0 undecidable manual P 39 147.6411 50 0.32 18
FR.SAOF.HHZ.00 2019-08-11T14:04:35.94 0.3 undecidable manual P 151 131.7681 50 0.49 54
GU.PZZ.HHZ. 2019-08-11T14:04:33.15 0.6 undecidable manual S 153 64.491 50 -0.4 42
GU.ENR.HHZ. 2019-08-11T14:04:31.19 0.3 undecidable manual P 149 103.3188 50 0.13 62
GU.LSD.HHZ. 2019-08-11T14:04:30.78 0.3 undecidable manual S 32 56.5989 50 -0.67 59
IV.MONC.HHZ. 2019-08-11T14:04:30.67 1.0 undecidable manual P 86 92.4408 50 1.29 14
GU.TRAV.HHZ. 2019-08-11T14:04:30.26 0.3 undecidable manual P 55 94.6386 50 0.53 58
GU.REMY.HHZ. 2019-08-11T14:04:30.25 0.1 undecidable manual P 19 95.3379 50 0.41 79
IV.MRGE.HHZ. 2019-08-11T14:04:28.58 0.1 undecidable manual P 16 85.9473 50 0.2 85
GU.RSP.HHZ. 2019-08-11T14:04:27.39 0.3 undecidable manual S 71 42.5241 50 -0.3 67
GU.BHB.HHZ. 2019-08-11T14:04:27.71 0.3 undecidable manual S 118 45.5211 50 -0.79 57
GU.PZZ.HHZ. 2019-08-11T14:04:24.73 0.1 undecidable manual P 153 64.491 50 -0.35 86
GU.LSD.HHZ. 2019-08-11T14:04:23.88 0.1 positive manual P 32 56.5989 50 0.01 93
GU.BHB.HHZ. 2019-08-11T14:04:22.21 0.1 positive manual P 118 45.5211 50 0.05 94
GU.RSP.HHZ. 2019-08-11T14:04:21.75 0.1 positive manual P 71 42.5241 50 0.05 95
GU.RRL.HHE. 2019-08-11T14:04:18.97 0.6 undecidable manual S 165 12.1767 128 0.12 49
MN.BNI.HNZ. 2019-08-11T14:04:16.89 0.3 undecidable manual S 296 6.2937 146 -0.55 68
GU.RRL.HHE. 2019-08-11T14:04:16.80 0.1 negative manual P 165 12.1767 128 0.21 97
MN.BNI.HNZ. 2019-08-11T14:04:15.68 0.1 negative manual P 296 6.2937 146 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.BNI.HHN. ML:2.1 0.002178384 0.1408 AML other m 2019-08-11T14:04:16.92
MN.BNI.HNE. ML:1.5 0.0005899117000000001 0.1408 AML other m 2019-08-11T14:04:17.02
MN.BNI.HHE. ML:1.6 0.0005979693 0.064 AML other m 2019-08-11T14:04:16.92
MN.BNI.HNN. ML:2.1 0.0021134615000000002 0.1216 AML other m 2019-08-11T14:04:16.93
GU.RSP.HNN. ML:2.0 0.0003593123 0.16 AML other m 2019-08-11T14:04:27.00
GU.RSP.HHN. ML:2.1 0.0003995249 0.1024 AML other m 2019-08-11T14:04:28.59
GU.RSP.HHE. ML:2.2 0.00047461179999999995 0.1024 AML other m 2019-08-11T14:04:28.34
GU.RSP.HNE. ML:2.1 0.00040797805 0.1024 AML other m 2019-08-11T14:04:28.34
GU.BHB.HHE. ML:2.1 0.0003920724 0.1792 AML other m 2019-08-11T14:04:28.09
GU.BHB.HHN. ML:2.3 0.0006251227999999999 0.1216 AML other m 2019-08-11T14:04:27.80
GU.LSD.HHN. ML:2.3 0.0004668082 0.2176 AML other m 2019-08-11T14:04:31.28
IV.MRGE.HHE. ML:1.6 0.000057202165 0.1152 AML other m 2019-08-11T14:04:41.88
IV.MRGE.HHN. ML:1.9 0.000096648325 0.1792 AML other m 2019-08-11T14:04:41.16
GU.REMY.HHN. ML:1.8 0.00007583744 0.5632 AML other m 2019-08-11T14:04:46.52
GU.REMY.HHE. ML:1.7 0.00005011448 0.2816 AML other m 2019-08-11T14:04:44.63
GU.TRAV.HHE. ML:2.1 0.00012510945 0.16 AML other m 2019-08-11T14:04:43.07
GU.TRAV.HHN. ML:2.0 0.00010510916000000001 0.0832 AML other m 2019-08-11T14:04:44.43
IV.MONC.HHN. ML:2.1 0.00014555745 0.3008 AML other m 2019-08-11T14:04:49.28
IV.MONC.HHE. ML:2.1 0.0001515565 0.2432 AML other m 2019-08-11T14:04:48.68
GU.ENR.HHN. ML:1.9 0.00007165982500000001 0.2368 AML other m 2019-08-11T14:04:45.41
GU.ENR.HHE. ML:1.8 0.00006402514000000001 0.1216 AML other m 2019-08-11T14:04:46.07
FR.SAOF.HHE.00 ML:1.7 0.000027640214999999998 0.2368 AML other m 2019-08-11T14:05:00.71
FR.SAOF.HHN.00 ML:1.7 0.000029997009999999998 0.3776 AML other m 2019-08-11T14:04:59.41
IV.QLNO.HHN. ML:1.8 0.000028001264999999997 0.3648 AML other m 2019-08-11T14:04:58.50
IV.QLNO.HHE. ML:1.8 0.000028010279999999997 0.3008 AML other m 2019-08-11T14:04:58.62
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
Waveforms Seismic signals in miniseed + resp format Download