Earthquake with magnitude of ML 1.6 on date 25-10-2020 and time 23:20:23 (UTC) in region Svizzera (SVIZZERA)

A magnitude ML 1.6 earthquake occured in region: Svizzera (SVIZZERA), on

  • 25-10-2020 23:20:23 (UTC)
  • 26-10-2020 00:20:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.91, 9.13 at 9 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

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

Recent and historical Seismicity
Seismic hazard
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 ( 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
ML 1.6 2020-10-25
46.91 9.13 9 2020-10-25
Sala Sismica INGV-Roma 84135871
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2020-10-25 23:20:23 ± 0.28
Latitude 46.91 ± 0.02
Longitude 9.13 ± 0.01
Depth (km) 9 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84135871


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2022
Semi-minor axis of confidence ellipse (meter) 1131
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 9
Circular confidence region, given by single value of horizontal uncertainty (meter) 2020
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.22213
Epicentral distance of station farthest from the epicenter (degree) 0.78871
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information


Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 84135871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 23:25:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.FUSIO.HHZ. 2020-10-25T23:20:42.20 0.3 undecidable manual S 215 0.5549 50 -0.41 70
CH.DAVOX.HHZ. 2020-10-25T23:20:41.79 0.6 undecidable manual S 104 0.5297 50 -0.08 51
CH.BNALP.HHE. 2020-10-25T23:20:40.06 0.6 undecidable manual S 266 0.482 50 -0.4 48
MN.TUE.HHZ. 2020-10-25T23:20:39.19 0.3 undecidable manual S 161 0.4614 50 -0.67 66
CH.BERNI.HHE. 2020-10-25T23:20:38.91 0.1 undecidable manual P 129 0.7887 50 0.43 89
CH.DAVOX.HHZ. 2020-10-25T23:20:34.40 0.3 negative manual P 104 0.5297 50 0.35 72
CH.FUSIO.HHZ. 2020-10-25T23:20:34.85 0.3 positive manual P 215 0.5549 50 0.37 71
MN.TUE.HHZ. 2020-10-25T23:20:33.09 0.1 undecidable manual P 161 0.4614 50 0.21 100
CH.BNALP.HHE. 2020-10-25T23:20:33.54 0.3 undecidable manual P 266 0.482 50 0.31 73
CH.PLONS.HHZ. 2020-10-25T23:20:31.95 0.6 undecidable manual S 51 0.2221 111 -0.56 48
CH.PLONS.HHZ. 2020-10-25T23:20:28.50 0.3 positive manual P 51 0.2221 111 -0.14 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.PLONS.HHE. ML:1.5 0.000188 1.04 AML other m 2020-10-25T23:20:32.03
CH.PLONS.HHN. ML:1.8 0.0003905 0.14 AML other m 2020-10-25T23:20:32.54
MN.TUE.HHN. ML:1.5 8.575E-5 1.1 AML other m 2020-10-25T23:20:39.97
MN.TUE.HNN. ML:1.6 9.63E-5 1.08 AML other m 2020-10-25T23:20:39.97
MN.TUE.HNE. ML:1.8 0.0001465 1.06 AML other m 2020-10-25T23:20:39.26
MN.TUE.HHE. ML:1.8 0.0001459 1.06 AML other m 2020-10-25T23:20:39.26
CH.DAVOX.HHE. ML:1.9 0.0001531 0.5 AML other m 2020-10-25T23:20:41.33
CH.DAVOX.HHN. ML:2.2 0.000302 1.1 AML other m 2020-10-25T23:20:42.33
CH.FUSIO.HHE. ML:1.4 5.63463685E-5 0.192 AML other m 2020-10-25T23:20:42.80
CH.FUSIO.HHN. ML:1.4 5.4390655E-5 0.128 AML other m 2020-10-25T23:20:43.19
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download