Earthquake with magnitude of ML 0.6 on date 04-04-2023 and time 16:23:08 (Italy) in region 2 km SW Champdepraz (AO)

A magnitude ML 0.6 earthquake occured in region: 2 km SW Champdepraz (AO), on

  • 04-04-2023 14:23:08 (UTC)
  • 04-04-2023 16:23:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.6730, 7.6400 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Champdepraz AO 2 712 712
Verrès AO 4 2696 3408
Issogne AO 4 1400 4808
Montjovet AO 5 1801 6609
Champorcher AO 6 388 6997
Challand-Saint-Victor AO 6 564 7561
Arnad AO 7 1273 8834
Emarèse AO 8 226 9060
Pontey AO 8 817 9877
Pontboset AO 8 185 10062
Saint-Vincent AO 9 4660 14722
Châtillon AO 9 4772 19494
Challand-Saint-Anselme AO 9 751 20245
Hône AO 10 1166 21411
Chambave AO 11 931 22342
Bard AO 11 119 22461
Saint-Denis AO 11 378 22839
Brusson AO 12 897 23736
Donnas AO 13 2563 26299
Verrayes AO 13 1302 27601
Fénis AO 13 1813 29414
Pont-Saint-Martin AO 15 3840 33254
Perloz AO 15 477 33731
Antey-Saint-André AO 15 602 34333
Nus AO 15 2984 37317
Torgnon AO 15 558 37875
La Magdeleine AO 16 109 37984
Saint-Marcel AO 16 1362 39346
Ayas AO 16 1401 40747
Carema TO 17 774 41521
Lillianes AO 17 462 41983
Issime AO 17 423 42406
Fontainemore AO 17 440 42846
Quincinetto TO 18 1031 43877
Valprato Soana TO 18 108 43985
Chamois AO 19 97 44082
Gressoney-Saint-Jean AO 19 807 44889
Quart AO 19 4039 48928
Brissogne AO 19 1008 49936
Gaby AO 20 468 50404
Traversella TO 20 343 50747

Municipalities with at least 50000 inhabitants

An earthquake occurred to
67 Km N of Torino (890529 inhabitants)
75 Km N of Moncalieri (57294 inhabitants)
81 Km W of Novara (104380 inhabitants)
90 Km W of Gallarate (53343 inhabitants)
93 Km W of Varese (80799 inhabitants)
95 Km W of Busto Arsizio (83106 inhabitants)
97 Km NW 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 0.6 2023-04-04
14:23:08
45.6728 7.64 10 2024-03-01
17:18:19
Bollettino Sismico Italiano INGV 124560261
Reviewed
Rev100
ML 0.6 2023-04-04
14:23:08
45.6717 7.6362 10 2023-04-04
15:32:12
Sala Sismica INGV-Roma 116066181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-04 14:23:08 ± 0.14
Latitude 45.6728 ± 0.0072
Longitude 7.6400 ± 0.0142
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124560261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1053
Semi-minor axis of confidence ellipse (meter) 845
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 114
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.58636
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 124560261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-09 10:49:25

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 116066181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-04 15:32:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.RSP.HHE. 2023-04-04T14:23:28.58 0.6 undecidable manual S 207 65.0904 50 0.15 46
CH.DIX.HHZ. 2023-04-04T14:23:23.34 0.6 undecidable manual S 338 48.618 50 -0.68 41
GU.LSD.HHZ. 2023-04-04T14:23:22.56 0.6 undecidable manual S 239 45.9207 50 -0.73 41
GU.REMY.HHE. 2023-04-04T14:23:22.32 0.6 undecidable manual S 296 41.625 50 0.15 48
GU.RSP.HHE. 2023-04-04T14:23:20.12 0.3 undecidable manual P 207 65.0904 50 0.2 69
CH.MMK.HHE. 2023-04-04T14:23:17.49 0.3 undecidable manual P 31 48.8178 50 0.08 73
GU.LSD.HHZ. 2023-04-04T14:23:17.18 0.3 undecidable manual P 239 45.9207 50 0.22 71
CH.DIX.HHZ. 2023-04-04T14:23:17.30 0.3 undecidable manual P 338 48.618 50 -0.08 73
GU.REMY.HHE. 2023-04-04T14:23:16.59 0.3 undecidable manual P 296 41.625 50 0.28 71
GU.TRAV.HHZ. 2023-04-04T14:23:15.42 0.6 undecidable manual S 155 19.6692 116 -0.49 47
GU.TRAV.HHZ. 2023-04-04T14:23:12.81 0.3 undecidable manual P 155 19.6692 116 0.12 76
GU.CIRO.HHZ. 2023-04-04T14:23:12.71 0.6 undecidable manual S 215 9.6792 135 -0.35 49
GU.CIRO.HHZ. 2023-04-04T14:23:11.31 0.1 positive manual P 215 9.6792 135 0.26 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CIRO.HHN. ML:0.6 0.0000477 0.14 AML other m 2023-04-04T14:23:13.08
GU.CIRO.HHE. ML:0.5 0.0000395 1.56 AML other m 2023-04-04T14:23:13.94
GU.TRAV.HHN. ML:0.7 0.00003697235 0.1024 AML other m 2023-04-04T14:23:15.58
GU.TRAV.HHE. ML:0.5 0.000024497962999999997 1.5968 AML other m 2023-04-04T14:23:16.82
GU.LSD.HHE. ML:0.7 0.000013528745 1.28 AML other m 2023-04-04T14:23:23.00
GU.LSD.HHN. ML:0.5 0.000008887525000000001 1.6224 AML other m 2023-04-04T14:23:23.89
CH.DIX.HHN. ML:0.9 0.000018446494999999997 0.4672 AML other m 2023-04-04T14:23:24.41
CH.DIX.HHE. ML:0.6 0.000012422405 1.1296 AML other m 2023-04-04T14:23:24.89
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