Earthquake with magnitude of ML 2.3 on date 25-10-2020 and time 14:37:25 (Italy) in region Confine Italia Svizzera (SVIZZERA)

A magnitude ML 2.3 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 25-10-2020 13:37:25 (UTC)
  • 25-10-2020 14:37:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.987, 7.495 at 11 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
Bionaz AO 14 236 236
Valtournenche AO 16 2277 2513
Oyace AO 17 219 2732
Chamois AO 19 97 2829

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire *

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.3 2020-10-25
13:37:25
45.9872 7.4952 11 2021-02-26
14:56:19
Bollettino Sismico Italiano INGV 87237781
Reviewed
Rev100
ML 2.3 2020-10-25
13:37:25
45.9497 7.504 1 2020-10-25
13:46:23
Sala Sismica INGV-Roma 84120411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 13:37:25 ± 0.12
Latitude 45.9872 ± 0.0108
Longitude 7.4952 ± 0.0078
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87237781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1201
Semi-minor axis of confidence ellipse (meter) 581
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 1200
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 1.82472
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 87237781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-24 14:35:17

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 84120411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 13:46:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.DAVOX.HHZ. 2020-10-25T13:37:59.44 0.6 undecidable manual P 63 1.8247 38 1.87 0
IV.VARE.HHZ. 2020-10-25T13:37:55.10 0.6 undecidable manual S 97 0.8939 50 0.4 0
RD.ORIF.BHZ. 2020-10-25T13:37:55.72 0.6 undecidable manual P 227 1.5567 50 1.93 0
GU.RSP.HHZ. 2020-10-25T13:37:53.74 0.6 undecidable manual S 191 0.8535 50 0.24 1
GU.PZZ.HHZ. 2020-10-25T13:37:52.99 0.3 undecidable manual P 190 1.5037 50 0.1 0
GU.RRL.HHZ. 2020-10-25T13:37:48.30 0.3 undecidable manual P 205 1.1745 50 1.05 0
CH.BNALP.HHZ. 2020-10-25T13:37:47.38 0.3 undecidable manual P 36 1.0909 50 1.56 0
CH.GIMEL.HHZ. 2020-10-25T13:37:47.19 0.3 undecidable manual P 303 1.0099 50 2.75 0
MN.BNI.HHZ. 2020-10-25T13:37:47.06 0.3 undecidable manual P 212 1.0963 50 1.15 0
GU.BHB.HHZ. 2020-10-25T13:37:47.67 0.3 undecidable manual P 188 1.1628 50 0.63 0
CH.FUSIO.HHZ. 2020-10-25T13:37:44.25 0.3 undecidable manual P 60 0.9335 50 1.13 0
GU.LSD.HHZ. 2020-10-25T13:37:44.89 0.6 undecidable manual S 206 0.5846 50 -0.63 34
IV.VARE.HHZ. 2020-10-25T13:37:43.54 0.3 undecidable manual P 97 0.8939 50 1.08 0
GU.RSP.HHZ. 2020-10-25T13:37:42.44 0.1 positive manual P 191 0.8535 50 0.68 2
GU.TRAV.HHZ. 2020-10-25T13:37:42.80 0.6 undecidable manual S 160 0.5063 50 -0.39 44
GU.BLANC.HHE. 2020-10-25T13:37:40.65 0.6 undecidable manual S 250 0.4155 50 0.14 49
GU.CIRO.HHZ. 2020-10-25T13:37:39.00 0.6 undecidable manual S 172 0.3885 50 -0.71 41
IV.MRGE.HHZ. 2020-10-25T13:37:38.24 0.6 undecidable manual S 234 0.3723 50 -0.99 37
CH.MMK.HHZ. 2020-10-25T13:37:37.57 0.6 undecidable manual S 79 0.3318 50 -0.45 45
GU.LSD.HHZ. 2020-10-25T13:37:37.57 0.1 positive manual P 206 0.5846 50 0.41 73
GU.TRAV.HHZ. 2020-10-25T13:37:36.20 0.1 positive manual P 160 0.5063 50 0.38 89
GU.REMY.HHZ. 2020-10-25T13:37:36.04 0.6 undecidable manual S 238 0.2788 50 -0.42 46
GU.SATI.HHZ. 2020-10-25T13:37:36.00 0.6 undecidable manual S 113 0.2824 50 -0.57 44
GU.BLANC.HHE. 2020-10-25T13:37:35.01 0.3 undecidable manual P 250 0.4155 50 0.75 61
CH.MMK.HHZ. 2020-10-25T13:37:33.07 0.1 undecidable manual P 79 0.3318 50 0.24 95
GU.CIRO.HHZ. 2020-10-25T13:37:33.93 0.1 undecidable manual P 172 0.3885 50 0.12 98
IV.MRGE.HHZ. 2020-10-25T13:37:33.74 0.1 positive manual P 234 0.3723 50 0.21 96
GU.SATI.HHZ. 2020-10-25T13:37:32.23 0.1 negative manual P 113 0.2824 50 0.24 95
GU.REMY.HHZ. 2020-10-25T13:37:32.10 0.1 positive manual P 238 0.2788 50 0.17 97
CH.DIX.HHZ. 2020-10-25T13:37:30.80 0.3 undecidable manual S 327 0.1106 132 -0.67 63
CH.DIX.HHZ. 2020-10-25T13:37:29.05 0.1 positive manual P 327 0.1106 132 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHE. ML:0 0.0091 1.58 AML other m 2020-10-25T13:37:31.01
CH.DIX.HHN. ML:0 0.0148 0.62 AML other m 2020-10-25T13:37:33.11
GU.SATI.HHN. ML:2.5 0.001421739 0.1344 AML other m 2020-10-25T13:37:36.24
GU.SATI.HHE. ML:2.3 0.00085345895 0.096 AML other m 2020-10-25T13:37:36.68
GU.REMY.HHE. ML:0 0.0009651172 0.544 AML other m 2020-10-25T13:37:39.93
GU.REMY.HHN. ML:2.4 0.00117299635 0.384 AML other m 2020-10-25T13:37:37.54
CH.MMK.HHE. ML:1.4 8.535E-5 0.46 AML other m 2020-10-25T13:37:38.96
GU.CIRO.HHE. ML:2.2 0.00046 0.52 AML other m 2020-10-25T13:37:39.87
GU.CIRO.HHN. ML:2 0.0003135 0.5 AML other m 2020-10-25T13:37:40.69
IV.MRGE.HHN. ML:2.2 0.0004685 0.4 AML other m 2020-10-25T13:37:41.05
CH.MMK.HHN. ML:1.3 7.57E-5 0.22 AML other m 2020-10-25T13:37:42.13
GU.TRAV.HHE. ML:2.7 0.001125 0.18 AML other m 2020-10-25T13:37:43.15
IV.MRGE.HHE. ML:2.1 0.0004005 0.58 AML other m 2020-10-25T13:37:43.48
GU.TRAV.HHN. ML:2.6 0.001003 0.58 AML other m 2020-10-25T13:37:43.50
GU.LSD.HHN. ML:2 0.0001875 0.28 AML other m 2020-10-25T13:37:46.81
GU.LSD.HHE. ML:2 0.0002055 0.38 AML other m 2020-10-25T13:37:47.55
GU.BHB.HHN. ML:2 6.13E-5 1.6 AML other m 2020-10-25T13:37:48.84
GU.RSP.HNN. ML:2.3 0.000221 0.42 AML other m 2020-10-25T13:37:55.69
GU.RSP.HHN. ML:2.3 0.00022 0.42 AML other m 2020-10-25T13:37:55.48
GU.RSP.HNE. ML:2.3 0.0001995 0.78 AML other m 2020-10-25T13:37:55.84
IV.VARE.HHN. ML:2.4 0.000241 1.34 AML other m 2020-10-25T13:37:56.12
GU.RSP.HHE. ML:2.3 0.000199 0.6 AML other m 2020-10-25T13:37:59.16
IV.VARE.HHE. ML:2.2 0.0001565 0.38 AML other m 2020-10-25T13:37:59.08
RD.ORIF.BHN. ML:2.1 5.655E-5 0.36 AML other m 2020-10-25T13:38:00.41
CH.FUSIO.HHE. ML:2 9.175E-5 0.6 AML other m 2020-10-25T13:38:01.05
IV.MONC.HHE. ML:0 0.0002995 0.3 AML other m 2020-10-25T13:38:04.21
CH.FUSIO.HHN. ML:1.8 6.51E-5 0.42 AML other m 2020-10-25T13:38:04.83
GU.BHB.HHE. ML:2.1 8.97E-5 0.38 AML other m 2020-10-25T13:38:05.20
CH.GIMEL.HHN. ML:2.3 0.0001625 1.54 AML other m 2020-10-25T13:38:05.15
CH.GIMEL.HHE. ML:2.2 0.00013035 1.36 AML other m 2020-10-25T13:38:05.87
IV.MONC.HHN. ML:0 0.0003155 0.46 AML other m 2020-10-25T13:38:07.45
CH.BNALP.HHN. ML:2.3 0.00013955 0.26 AML other m 2020-10-25T13:38:09.23
CH.BNALP.HHE. ML:2.4 0.000164 0.3 AML other m 2020-10-25T13:38:09.47
GU.RRL.HHE. ML:2 6.98E-5 0.44 AML other m 2020-10-25T13:38:13.49
GU.RRL.HHN. ML:2.1 8.705E-5 0.92 AML other m 2020-10-25T13:38:16.91
GU.PZZ.HHE. ML:2.5 0.000142 0.78 AML other m 2020-10-25T13:38:18.20
IV.SARZ.HNN. ML:3.2 0.000651 1.34 AML other m 2020-10-25T13:38:20.28
IV.SARZ.HHN. ML:3.2 0.000632 1.32 AML other m 2020-10-25T13:38:20.28
IV.SARZ.HHE. ML:3.1 0.000517 1.48 AML other m 2020-10-25T13:38:23.10
GU.PZZ.HHN. ML:2.4 0.00010355 0.94 AML other m 2020-10-25T13:38:23.63
IV.SARZ.HNE. ML:3.1 0.0005035 0.52 AML other m 2020-10-25T13:38:25.41
CH.DAVOX.HHN. ML:3.2 0.0004365 1.04 AML other m 2020-10-25T13:38:31.24
CH.DAVOX.HHE. ML:2.9 0.0002485 1.58 AML other m 2020-10-25T13:38:33.93
RD.ORIF.BHE. ML:2.1 4.45E-5 0.44 AML other m 2020-10-25T13:38:37.27
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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