Earthquake with magnitude of ML 0.8 on date 24-10-2021 and time 05:23:52 (Italy) in region 9 km NE Livigno (SO)

A magnitude ML 0.8 earthquake occured in region: 9 km NE Livigno (SO), on

  • 24-10-2021 03:23:52 (UTC)
  • 24-10-2021 05:23:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.607, 10.195 at 11 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Livigno SO 9 6389 6389
Valdidentro SO 15 4125 10514

Municipalities with at least 50000 inhabitants

An earthquake occurred to
90 Km W of Bolzano (106441 inhabitants)
93 Km NW of Trento (117317 inhabitants)
Recent and historical seismicity
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 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 0.8 2021-10-24
03:23:52
46.6068 10.1948 11 2021-10-24
04:14:07
Sala Sismica INGV-Roma 96928361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-24 03:23:52 ± 0.25
Latitude 46.6068 ± 0.0189
Longitude 10.1948 ± 0.0262
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96928361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2307
Semi-minor axis of confidence ellipse (meter) 1709
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 44
Circular confidence region, given by single value of horizontal uncertainty (meter) 2310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.38851
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 96928361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-24 04:14:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
ST.CARE.EHZ. 2021-10-24T03:24:05.65 0.3 undecidable manual S 118 0.3885 91 -0.72 58
CH.DAVOX.HHZ. 2021-10-24T03:24:02.54 0.3 undecidable manual S 309 0.277 91 -0.54 69
ST.CARE.EHZ. 2021-10-24T03:24:01.12 0.1 undecidable manual P 118 0.3885 91 0.65 87
CH.BERNI.HHZ. 2021-10-24T03:24:01.11 0.1 undecidable manual S 212 0.2266 91 -0.46 100
CH.BERNI.HHZ. 2021-10-24T03:23:58.07 0.1 undecidable manual P 212 0.2266 91 0.38 92
CH.DAVOX.HHZ. 2021-10-24T03:23:58.82 0.1 undecidable manual P 309 0.277 91 0.26 97
CH.FUORN.HHZ. 2021-10-24T03:23:56.29 0.1 undecidable manual S 74 0.0486 146 -0.46 98
CH.FUORN.HHZ. 2021-10-24T03:23:55.20 0.1 undecidable manual P 74 0.0486 146 0.29 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.FUORN.HHE. ML:0.6 5.265E-5 0.14 AML other m 2021-10-24T03:23:56.55
CH.FUORN.HHN. ML:0.9 0.0001205 0.14 AML other m 2021-10-24T03:23:56.73
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