Earthquake with magnitude of ML 1.7 on date 31-08-2019 and time 01:02:32 (Italy) in region Gressoney La Trinité (AO)

A magnitude ML 1.7 earthquake occured in region: Gressoney La Trinité (AO), on

  • 30-08-2019 23:02:32 (UTC)
  • 31-08-2019 01:02:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.83, 7.82 at 13 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
Gressoney-La-Trinité AO 0 303 303
Gressoney-Saint-Jean AO 5 807 1110
Alagna Valsesia VC 10 408 1518
Brusson AO 10 897 2415
Riva Valdobbia VC 10 258 2673
Ayas AO 10 1401 4074
Gaby AO 13 468 4542
Challand-Saint-Anselme AO 14 751 5293
Emarèse AO 15 226 5519
Chamois AO 16 97 5616
La Magdeleine AO 16 109 5725
Issime AO 16 423 6148
Saint-Vincent AO 16 4660 10808
Rassa VC 16 71 10879
Mollia VC 16 95 10974
Rima San Giuseppe VC 16 59 11033
Valtournenche AO 16 2277 13310
Campertogno VC 17 237 13547
Challand-Saint-Victor AO 18 564 14111
Montjovet AO 18 1801 15912
Antey-Saint-André AO 18 602 16514
Châtillon AO 18 4772 21286
Piedicavallo BI 18 193 21479
Piode VC 19 202 21681
Rimasco VC 19 106 21787
Torgnon AO 20 558 22345
Macugnaga VB 20 557 22902
Carcoforo VC 20 78 22980
Fontainemore AO 20 440 23420
Champdepraz AO 20 712 24132

Municipalities with at least 50000 inhabitants

An earthquake occurred to
75 Km NW of Novara (104380 inhabitants)
78 Km W of Gallarate (53343 inhabitants)
78 Km W of Varese (80799 inhabitants)
84 Km W of Busto Arsizio (83106 inhabitants)
84 Km N of Torino (890529 inhabitants)
89 Km W of Legnano (60262 inhabitants)
92 Km N of Moncalieri (57294 inhabitants)
98 Km W of Como (84495 inhabitants)
99 Km NW of Vigevano (63310 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 1.7 2019-08-30
23:02:32
45.83 7.82 13 2019-08-30
23:10:44
Sala Sismica INGV-Roma 71951041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-30 23:02:32 ± 0.12
Latitude 45.83 ± 0.01
Longitude 7.82 ± 0.01
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71951041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 959
Semi-minor axis of confidence ellipse (meter) 329
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 960
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.15923
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 71951041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-30 23:10:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
ST.RONC.EHZ. 2019-08-30T23:03:42.29 3.0 undecidable manual Sg 9.77 0
IV.FIR.HHZ. 2019-08-30T23:03:21.84 3.0 undecidable manual Pn -0.64 0
GU.PZZ.HHZ. 2019-08-30T23:03:00.02 3.0 positive manual P 2.42 0
IV.QLNO.HHZ. 2019-08-30T23:03:00.23 3.0 undecidable manual Pg 0.58 0
CH.MUGIO.HHZ. 2019-08-30T23:02:59.50 0.6 undecidable manual S 83 0.8535 92 -0.45 41
GU.ENR.HHZ. 2019-08-30T23:02:59.47 3.0 undecidable manual Pn -1.11 0
CH.FUSIO.HHZ. 2019-08-30T23:02:59.37 0.6 undecidable manual S 43 0.8562 92 -0.66 38
GU.RSP.HHZ. 2019-08-30T23:02:57.95 0.6 undecidable manual S 210 0.7824 92 0.13 44
GU.RRL.HHZ. 2019-08-30T23:02:54.36 1.0 positive manual P 219 1.1592 91 0.92 16
IV.VARE.HHZ. 2019-08-30T23:02:53.53 0.6 undecidable manual S 86 0.661 92 -0.71 40
CH.BNALP.HHZ. 2019-08-30T23:02:53.73 0.1 undecidable manual P 22 1.1233 91 0.9 63
MN.BNI.HHZ. 2019-08-30T23:02:53.71 0.6 undecidable manual P 226 1.1152 91 1.03 30
GU.LSD.HHZ. 2019-08-30T23:02:51.92 0.6 undecidable manual S 233 0.6043 92 -0.65 39
GU.BHB.HHZ. 2019-08-30T23:02:51.03 0.3 negative manual P 202 1.0657 91 -0.81 50
IV.MRGE.HHZ. 2019-08-30T23:02:49.76 0.6 undecidable manual S 264 0.5333 93 -0.71 38
CH.FUSIO.HHZ. 2019-08-30T23:02:48.50 0.6 negative manual P 43 0.8562 92 0.24 42
CH.MUGIO.HHZ. 2019-08-30T23:02:48.67 0.6 positive manual P 83 0.8535 92 0.45 40
GU.RSP.HHZ. 2019-08-30T23:02:47.01 0.1 undecidable manual P 210 0.7824 92 0.02 90
CH.DIX.HHZ. 2019-08-30T23:02:45.08 0.6 undecidable manual S 312 0.3831 95 -0.95 36
IV.VARE.HHZ. 2019-08-30T23:02:45.20 0.1 undecidable manual P 86 0.661 92 0.28 86
GU.LSD.HHZ. 2019-08-30T23:02:44.24 0.6 positive manual P 233 0.6043 92 0.29 44
IV.MRGE.HHZ. 2019-08-30T23:02:43.13 0.1 negative manual P 264 0.5333 93 0.39 88
GU.TRAV.HHZ. 2019-08-30T23:02:43.33 0.6 undecidable manual S 190 0.3184 96 -0.77 40
GU.REMY.HHZ. 2019-08-30T23:02:41.77 0.1 undecidable manual P 272 0.4641 94 0.22 93
CH.DIX.HHZ. 2019-08-30T23:02:40.17 0.1 positive manual P 312 0.3831 95 -0.01 97
CH.MMK.HHZ. 2019-08-30T23:02:40.99 0.6 undecidable manual S 24 0.2446 99 -0.95 38
GU.TRAV.HHZ. 2019-08-30T23:02:39.15 0.1 undecidable manual P 190 0.3184 96 0.09 98
CH.MMK.HHZ. 2019-08-30T23:02:37.82 0.1 positive manual P 24 0.2446 99 0 100
GU.SATI.HHZ. 2019-08-30T23:02:36.92 0.6 undecidable manual S 33 0.0585 148 -0.22 50
GU.SATI.HHZ. 2019-08-30T23:02:35.43 0.1 undecidable manual P 33 0.0585 148 0.38 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.SATI.HHE. ML:2.5 0.004235 0.1 AML other m 2019-08-30T23:02:37.21
GU.SATI.HHN. ML:2.6 0.0054 0.4 AML other m 2019-08-30T23:02:37.13
CH.MMK.HHN. ML:1.2 7.455E-5 0.32 AML other m 2019-08-30T23:02:41.68
CH.MMK.HHE. ML:1 5.57E-5 0.16 AML other m 2019-08-30T23:02:41.58
GU.TRAV.HHN. ML:2.5 0.00134 1.48 AML other m 2019-08-30T23:02:43.03
GU.TRAV.HHE. ML:2.5 0.0011955 0.1 AML other m 2019-08-30T23:02:43.72
CH.DIX.HHN. ML:2.1 0.000419 0.58 AML other m 2019-08-30T23:02:45.42
CH.DIX.HHE. ML:2 0.0003355 1.16 AML other m 2019-08-30T23:02:46.21
GU.REMY.HHN. ML:1.6 0.000104 0.8 AML other m 2019-08-30T23:02:48.82
GU.REMY.HHE. ML:1.6 9.335E-5 0.9 AML other m 2019-08-30T23:02:50.07
IV.MRGE.HHE. ML:1.5 6.07E-5 1.54 AML other m 2019-08-30T23:02:52.17
GU.LSD.HHE. ML:1.9 0.000133 0.12 AML other m 2019-08-30T23:02:53.20
IV.MRGE.HHN. ML:1.6 7.6E-5 0.56 AML other m 2019-08-30T23:02:53.27
GU.LSD.HHN. ML:1.6 7.67E-5 0.68 AML other m 2019-08-30T23:02:53.29
IV.VARE.HHE. ML:2 0.0001715 0.92 AML other m 2019-08-30T23:02:54.50
GU.BHB.HHN. ML:1.4 1.855E-5 0.92 AML other m 2019-08-30T23:02:54.04
IV.VARE.HHN. ML:2.2 0.0002685 0.26 AML other m 2019-08-30T23:02:55.22
GU.RSP.HHE. ML:1.8 6.835E-5 0.24 AML other m 2019-08-30T23:02:59.03
GU.RSP.HHN. ML:1.9 9.755E-5 0.5 AML other m 2019-08-30T23:02:59.29
CH.MUGIO.HHE. ML:1.5 3.615E-5 1.12 AML other m 2019-08-30T23:03:00.65
CH.MUGIO.HHN. ML:1.7 4.97E-5 0.2 AML other m 2019-08-30T23:03:01.36
CH.FUSIO.HHE. ML:1.6 4.11E-5 0.42 AML other m 2019-08-30T23:03:02.39
CH.FUSIO.HHN. ML:1.7 5.125E-5 0.72 AML other m 2019-08-30T23:03:02.43
GU.BHB.HHE. ML:1.4 2.075E-5 1.1 AML other m 2019-08-30T23:03:10.32
GU.RRL.HHN. ML:1.5 1.95E-5 0.72 AML other m 2019-08-30T23:03:12.75
CH.BNALP.HHE. ML:1.8 4.445E-5 0.56 AML other m 2019-08-30T23:03:15.11
CH.BNALP.HHN. ML:1.5 2.235E-5 0.94 AML other m 2019-08-30T23:03:17.23
GU.RRL.HHE. ML:1.5 2.155E-5 0.58 AML other m 2019-08-30T23:03:18.73
GU.PZZ.HHE. ML:1.7 2.28E-5 1.1 AML other m 2019-08-30T23:03:21.69
GU.PZZ.HHN. ML:1.6 2.055E-5 1.28 AML other m 2019-08-30T23:03:25.88
IV.FIR.HHE. ML:3.5 0.000256 0.82 AML other m 2019-08-30T23:03:33.07
IV.FIR.HHN. ML:3.5 0.0002365 1.54 AML other m 2019-08-30T23:03:33.03
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