Earthquake with magnitude of ML 1.6 on date 20-01-2021 and time 02:59:33 (Italy) in region Confine Italia Svizzera (SVIZZERA)

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

  • 20-01-2021 01:59:33 (UTC)
  • 20-01-2021 02:59:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.07, 7.51 at 5 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
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
Reviewed
Rev100
ML 1.6 2021-01-20
01:59:33
46.07 7.51 5 2021-01-20
02:06:05
Sala Sismica INGV-Roma 86387131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-20 01:59:33 ± 0.11
Latitude 46.07 ± 0.01
Longitude 7.51 ± 0.01
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86387131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 827
Semi-minor axis of confidence ellipse (meter) 530
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 355
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 1.24196
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 86387131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-20 02:06:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHZ. 2021-01-20T01:59:57.04 0.1 undecidable manual P 188 1.242 50 0.26 78
CH.GIMEL.HHE. 2021-01-20T01:59:52.58 0.3 undecidable manual P 299 0.9785 50 0.3 61
CH.BNALP.HHZ. 2021-01-20T01:59:52.82 1.0 positive manual P 38 1.0216 50 -0.19 21
IV.VARE.HHZ. 2021-01-20T01:59:51.04 0.1 undecidable manual P 102 0.8966 50 0.16 86
CH.FUSIO.HHE. 2021-01-20T01:59:50.31 0.3 undecidable manual P 64 0.8867 50 -0.39 62
GU.LSD.HHZ. 2021-01-20T01:59:46.36 0.6 undecidable manual P 204 0.6601 50 -0.47 42
GU.REMY.HHZ. 2021-01-20T01:59:45.82 0.3 undecidable manual S 227 0.3354 98 -0.59 65
GU.SATI.HHZ. 2021-01-20T01:59:45.71 0.3 undecidable manual S 127 0.313 99 0.14 73
GU.TRAV.HHZ. 2021-01-20T01:59:45.59 0.3 negative manual P 163 0.5765 50 0.19 69
CH.MMK.HHZ. 2021-01-20T01:59:44.88 0.3 undecidable manual S 93 0.3148 99 -0.76 61
GU.CIRO.HHZ. 2021-01-20T01:59:43.50 0.6 positive manual P 175 0.4649 50 0 49
IV.MRGE.HHZ. 2021-01-20T01:59:42.67 0.1 positive manual P 227 0.4299 50 -0.23 94
GU.SATI.HHZ. 2021-01-20T01:59:40.97 0.1 positive manual P 127 0.313 99 0.56 88
GU.REMY.HHZ. 2021-01-20T01:59:40.98 0.1 negative manual P 227 0.3354 98 0.08 98
CH.MMK.HHZ. 2021-01-20T01:59:40.44 0.1 negative manual P 93 0.3148 99 -0.01 100
CH.DIX.HHZ. 2021-01-20T01:59:36.59 0.3 undecidable manual S 281 0.0719 123 -0.11 77
CH.DIX.HHZ. 2021-01-20T01:59:35.61 0.1 negative manual P 281 0.0719 123 0.31 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.DIX.HHE. ML:2.8 0.0117 0.2 AML other m 2021-01-20T01:59:36.69
CH.DIX.HHN. ML:2.8 0.00987 0.12 AML other m 2021-01-20T01:59:36.72
GU.SATI.HHN. ML:1.8 0.000297 1.38 AML other m 2021-01-20T01:59:46.96
GU.SATI.HHE. ML:1.8 0.0002615 0.32 AML other m 2021-01-20T01:59:46.60
CH.MMK.HHN. ML:0.7 1.89E-5 0.46 AML other m 2021-01-20T01:59:47.29
CH.MMK.HHE. ML:0.6 1.5E-5 0.32 AML other m 2021-01-20T01:59:47.46
GU.REMY.HHE. ML:2 0.000371 0.4 AML other m 2021-01-20T01:59:47.92
GU.REMY.HHN. ML:1.8 0.000239 0.46 AML other m 2021-01-20T01:59:48.18
IV.MRGE.HHE. ML:1.6 0.000127 1 AML other m 2021-01-20T01:59:49.68
IV.MRGE.HHN. ML:1.9 0.000218 1.24 AML other m 2021-01-20T01:59:49.63
GU.TRAV.HHN. ML:1.5 6.325E-5 1.24 AML other m 2021-01-20T01:59:55.66
GU.LSD.HHE. ML:1.6 5.99E-5 1.42 AML other m 2021-01-20T01:59:56.18
GU.TRAV.HHE. ML:1.6 6.975E-5 0.1 AML other m 2021-01-20T01:59:56.50
GU.LSD.HHN. ML:1.4 3.685E-5 0.7 AML other m 2021-01-20T01:59:56.99
CH.BNALP.HHN. ML:1.7 4.67E-5 0.46 AML other m 2021-01-20T02:00:13.81
CH.BNALP.HHE. ML:1.6 3.13E-5 0.4 AML other m 2021-01-20T02:00:27.31
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