Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 26-10-2020 and time 10:05:13 (Italy) in region 2 km N Allein (AO)

A magnitude ML 1.5 earthquake occured in region: 2 km N Allein (AO), on

  • 26-10-2020 09:05:13 (UTC)
  • 26-10-2020 10:05:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.8330, 7.2740 at 7 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Allein AO 2 229 229
Doues AO 3 510 739
Etroubles AO 3 501 1240
Ollomont AO 4 157 1397
Valpelline AO 4 657 2054
Saint-Oyen AO 5 203 2257
Roisan AO 6 1036 3293
Gignod AO 6 1710 5003
Saint-Rhémy-en-Bosses AO 7 338 5341
Oyace AO 9 219 5560
Aosta AO 11 34390 39950
Saint-Christophe AO 11 3432 43382
Gressan AO 12 3387 46769
Bionaz AO 13 236 47005
Sarre AO 13 4927 51932
Charvensod AO 13 2468 54400
Jovençan AO 13 736 55136
Pollein AO 13 1569 56705
Saint-Pierre AO 14 3165 59870
Aymavilles AO 15 2086 61956
Quart AO 15 4039 65995
Saint-Nicolas AO 15 311 66306
Villeneuve AO 15 1289 67595
Brissogne AO 16 1008 68603
Arvier AO 16 873 69476
Introd AO 17 658 70134
Avise AO 17 305 70439
Saint-Marcel AO 18 1362 71801
Nus AO 18 2984 74785
La Salle AO 18 2087 76872

Municipalities with at least 50000 inhabitants

An earthquake occurred to
90 Km NW of Torino (890529 inhabitants)
98 Km NW of Moncalieri (57294 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 1.5 2020-10-26
09:05:13		 45.8328 7.2742 7 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 86933901
Reviewed
Rev100 		ML 1.5 2020-10-26
09:05:13		 45.8167 7.2862 8 2020-10-26
09:14:59		 Sala Sismica INGV-Roma 84147761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-26 09:05:13 ± 0.13
Latitude 45.8328 ± 0.0099
Longitude 7.2742 ± 0.0142
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86933901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1268
Semi-minor axis of confidence ellipse (meter) 779
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 312
Circular confidence region, given by single value of horizontal uncertainty (meter) 1270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.99645
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 84147761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-26 09:14:59

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 86933901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-08 11:28:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2020-10-26T09:07:04.50 3.0 undecidable manual Sn -1.65 0
IV.PTRJ.HHZ. 2020-10-26T09:07:02.08 3.0 undecidable manual Pn 3.54 0
IV.RNI2.HHZ. 2020-10-26T09:06:56.13 3.0 undecidable manual Pn 3.6 0
IV.RM33.HNZ. 2020-10-26T09:06:52.18 3.0 undecidable manual Pg 14.16 0
IV.GIUL.HHZ. 2020-10-26T09:06:52.08 3.0 undecidable manual Pn 4.88 0
IV.CRE.HHZ. 2020-10-26T09:06:26.28 3.0 undecidable manual Pg 7.61 0
IV.FIR.HHZ. 2020-10-26T09:06:15.62 3.0 negative manual Pn 3.84 0
IV.ZONE.HHZ. 2020-10-26T09:05:52.24 3.0 negative manual Pn 0.89 0
IV.IMI.HHZ. 2020-10-26T09:05:48.81 3.0 undecidable manual Pn -1.45 0
GU.BHB.HHZ. 2020-10-26T09:05:33.32 0.3 undecidable manual P 180 110.6004 50 0.46 59
GU.RSP.HHZ. 2020-10-26T09:05:27.34 0.3 undecidable manual P 181 75.9684 50 -0.18 68
GU.TRAV.HHZ. 2020-10-26T09:05:23.67 0.3 undecidable manual P 134 51.0156 50 0 73
CH.DIX.HHZ. 2020-10-26T09:05:23.90 0.3 undecidable manual S 21 29.2485 103 -0.39 70
GU.BLANC.HHZ. 2020-10-26T09:05:23.00 0.3 undecidable manual S 273 26.3514 105 -0.29 72
GU.SATI.HHZ. 2020-10-26T09:05:22.59 0.3 undecidable manual P 84 46.1205 50 -0.33 69
CH.DIX.HHZ. 2020-10-26T09:05:20.18 0.1 undecidable manual P 21 29.2485 103 0.3 96
GU.CIRO.HHZ. 2020-10-26T09:05:20.67 0.3 undecidable manual P 138 34.2435 101 -0.18 73
IV.MRGE.HHZ. 2020-10-26T09:05:19.87 0.3 undecidable manual S 247 17.871 111 -0.64 67
GU.BLANC.HHZ. 2020-10-26T09:05:19.48 0.3 undecidable manual P 273 26.3514 105 0.18 74
IV.MRGE.HHZ. 2020-10-26T09:05:17.88 0.1 negative manual P 247 17.871 111 0.19 100
GU.REMY.HHZ. 2020-10-26T09:05:17.70 0.3 undecidable manual S 273 9.0798 127 -0.11 77
GU.REMY.HHZ. 2020-10-26T09:05:16.81 0.1 undecidable manual P 273 9.0798 127 0.68 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.REMY.HHE. ML:1.6 0.0007179601500000001 0.0768 AML other m 2020-10-26T09:05:16.91
GU.REMY.HHN. ML:1.8 0.0009607729499999999 0.0768 AML other m 2020-10-26T09:05:18.41
IV.MRGE.HHN. ML:1.6 0.00036896985 0.064 AML other m 2020-10-26T09:05:20.12
IV.MRGE.HHE. ML:1.4 0.00021261934999999998 0.0576 AML other m 2020-10-26T09:05:20.49
CH.DIX.HHE. ML:2.0 0.0005960414000000001 0.1664 AML other m 2020-10-26T09:05:24.22
CH.DIX.HHN. ML:1.8 0.00036166560000000004 0.224 AML other m 2020-10-26T09:05:24.56
GU.CIRO.HHE. ML:1.3 0.000079500155 0.1152 AML other m 2020-10-26T09:05:25.06
GU.CIRO.HHN. ML:1.2 0.000064086635 0.064 AML other m 2020-10-26T09:05:25.74
GU.SATI.HHN. ML:1.3 0.00006085 0.06 AML other m 2020-10-26T09:05:29.79
GU.TRAV.HHN. ML:1.5 0.000090504575 0.0768 AML other m 2020-10-26T09:05:30.24
GU.TRAV.HHE. ML:1.4 0.00006674368 0.1216 AML other m 2020-10-26T09:05:30.90
GU.SATI.HHE. ML:1.1 0.000038982875 0.1024 AML other m 2020-10-26T09:05:29.86
GU.RSP.HHE. ML:1.4 0.000041456395 0.224 AML other m 2020-10-26T09:05:36.40
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