Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 17-02-2021 and time 15:02:40 (Italy) in region Confine Italia Svizzera (SVIZZERA)

A magnitude ML 0.5 earthquake occured in region: Confine Italia Svizzera (SVIZZERA), on

  • 17-02-2021 14:02:40 (UTC)
  • 17-02-2021 15:02:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.6140, 10.4900 at 10 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Tubre BZ 4 977 977
Stelvio BZ 5 1161 2138
Prato allo Stelvio BZ 8 3474 5612
Glorenza BZ 8 896 6508
Sluderno BZ 9 1804 8312
Malles Venosta BZ 10 5162 13474
Lasa BZ 16 3993 17467
Valfurva SO 18 2638 20105
Bormio SO 18 4121 24226

Municipalities with at least 50000 inhabitants

An earthquake occurred to
68 Km W of Bolzano (106441 inhabitants)
78 Km NW of Trento (117317 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 0.5 2021-02-17
14:02:40		 46.6142 10.4897 10 2021-07-12
16:55:00		 Bollettino Sismico Italiano INGV 87669441
Reviewed
Rev100 		ML 0.6 2021-02-17
14:02:41		 46.6142 10.4823 9 2021-02-17
14:09:38		 Sala Sismica INGV-Roma 87245021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 14:02:40 ± 0.11
Latitude 46.6142 ± 0.0072
Longitude 10.4897 ± 0.0079
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87669441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 846
Semi-minor axis of confidence ellipse (meter) 574
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 155
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.04137
Epicentral distance of station farthest from the epicenter (degree) 0.58096
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 87669441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-03 14:37:13

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 87245021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-17 14:09:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.DAVOX.HHE. 2021-02-17T14:02:56.70 0.3 undecidable manual S 292 49.9167 50 -0.28 68
CH.BERNI.HHZ. 2021-02-17T14:02:54.57 0.3 undecidable manual S 238 42.0246 50 -0.28 69
SI.ABSI.HHE. 2021-02-17T14:02:52.15 0.1 undecidable manual P 78 64.491 50 -0.26 89
IV.APPI.EHE. 2021-02-17T14:02:51.85 1.0 undecidable manual P 105 58.2972 50 0.39 22
CH.DAVOX.HHE. 2021-02-17T14:02:50.22 0.3 undecidable manual P 292 49.9167 50 0.05 72
CH.BERNI.HHZ. 2021-02-17T14:02:49.32 0.1 undecidable manual P 238 42.0246 50 0.38 90
IV.BORM.HNZ. 2021-02-17T14:02:47.80 0.3 undecidable manual S 208 18.2706 118 -0.22 73
CH.FUORN.HHZ. 2021-02-17T14:02:47.50 0.3 undecidable manual S 272 17.2716 119 -0.22 73
IV.BRMO.HHZ. 2021-02-17T14:02:47.70 0.3 undecidable manual S 210 17.7711 118 -0.17 74
IV.BRMO.HHZ. 2021-02-17T14:02:45.19 0.3 undecidable manual P 210 17.7711 118 0.28 72
IV.BORM.HNZ. 2021-02-17T14:02:45.15 0.3 undecidable manual P 208 18.2706 118 0.15 74
CH.FUORN.HHZ. 2021-02-17T14:02:45.19 0.1 undecidable manual P 272 17.2716 119 0.37 95
SI.MOSI.HHZ. 2021-02-17T14:02:44.19 0.3 undecidable manual S 87 4.5954 155 -0.37 72
SI.MOSI.HHZ. 2021-02-17T14:02:43.21 0.1 undecidable manual P 87 4.5954 155 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.FUORN.HHN. ML:0.5 0.0000270609 0.2816 AML other m 2021-02-17T14:02:47.73
IV.BRMO.HHE. ML:0.4 0.000021973779999999998 0.1024 AML other m 2021-02-17T14:02:47.91
IV.BRMO.HHN. ML:0.5 0.00002529889 0.1216 AML other m 2021-02-17T14:02:48.47
CH.FUORN.HHE. ML:0.4 0.000022199999999999998 0.7 AML other m 2021-02-17T14:02:50.94
CH.BERNI.HHN. ML:0.7 0.000013940265 0.0896 AML other m 2021-02-17T14:02:55.71
CH.BERNI.HHE. ML:0.5 0.000012095231350000001 0.0768 AML other m 2021-02-17T14:02:55.86
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