Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 20-01-2020 and time 09:41:44 (Italy) in region 5 km E Grosio (SO)

A magnitude ML 1.2 earthquake occured in region: 5 km E Grosio (SO), on

  • 20-01-2020 08:41:44 (UTC)
  • 20-01-2020 09:41:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.2830, 10.3360 at 8 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.

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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
Grosio SO 5 4443 4443
Sondalo SO 6 4136 8579
Grosotto SO 6 1622 10201
Mazzo di Valtellina SO 7 1022 11223
Incudine BS 7 385 11608
Vezza d'Oglio BS 7 1457 13065
Monno BS 8 555 13620
Vervio SO 8 217 13837
Tovo di Sant'Agata SO 8 628 14465
Vione BS 9 691 15156
Lovero SO 10 661 15817
Temù BS 11 1105 16922
Edolo BS 12 4572 21494
Sernio SO 12 486 21980
Sonico BS 13 1264 23244
Ponte di Legno BS 14 1729 24973
Tirano SO 14 9130 34103
Corteno Golgi BS 15 1976 36079
Valdisotto SO 17 3556 39635
Villa di Tirano SO 18 3000 42635
Malonno BS 18 3261 45896

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km W of Trento (117317 inhabitants)
82 Km W of Bolzano (106441 inhabitants)
83 Km N of Brescia (196480 inhabitants)
83 Km NE of Bergamo (119381 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
Reviewed
Rev100 		ML 1.2 2020-01-20
08:41:44		 46.2833 10.336 8 2020-01-20
08:49:20		 Sala Sismica INGV-Roma 75672531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-20 08:41:44 ± 0.1
Latitude 46.2833 ± 0.0045
Longitude 10.3360 ± 0.0091
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75672531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 534
Semi-minor axis of confidence ellipse (meter) 485
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 291
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.96677
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 75672531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-20 08:49:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.MUGIO.HHZ. 2020-01-20T08:42:02.46 0.3 undecidable manual P 249 107.3148 50 -0.06 65
MN.TUE.HHZ. 2020-01-20T08:41:58.12 0.3 positive manual P 286 78.4659 50 0.04 69
SI.MOSI.HHZ. 2020-01-20T08:41:57.44 0.3 undecidable manual S 24 40.4262 50 -0.61 64
CH.FUORN.HHZ. 2020-01-20T08:41:57.07 0.3 undecidable manual S 352 37.7289 50 -0.28 71
IV.APPI.EHZ. 2020-01-20T08:41:57.41 3.0 positive manual P 0 0
CH.DAVOX.HHZ. 2020-01-20T08:41:56.37 0.3 undecidable manual P 328 65.1903 50 0.34 66
IV.MAGA.HHZ. 2020-01-20T08:41:55.68 0.6 positive manual P 158 60.6948 50 0.34 45
ST.CARE.EHZ. 2020-01-20T08:41:55.67 0.3 undecidable manual S 60 31.6461 105 0.09 74
IV.ZONE.HHZ. 2020-01-20T08:41:55.31 0.6 undecidable manual P 196 60.0954 50 0.07 47
ST.OZOL.EHZ. 2020-01-20T08:41:54.89 0.1 undecidable manual P 76 56.3991 50 0.21 92
ST.GAGG.HHZ. 2020-01-20T08:41:54.33 0.3 undecidable manual P 115 52.7028 50 0.22 69
IV.BRMO.HHZ. 2020-01-20T08:41:52.01 0.1 undecidable manual S 7 21.5673 111 -0.24 98
SI.MOSI.HHZ. 2020-01-20T08:41:52.56 0.1 undecidable manual P 24 40.4262 50 0.36 92
CH.FUORN.HHZ. 2020-01-20T08:41:51.88 0.3 undecidable manual P 352 37.7289 50 0.08 74
IV.BORM.HNE. 2020-01-20T08:41:51.84 0.1 undecidable manual S 9 20.868 112 -0.19 99
ST.RONC.EHZ. 2020-01-20T08:41:51.83 0.1 undecidable manual P 147 40.2264 50 -0.35 92
ST.CARE.EHZ. 2020-01-20T08:41:50.74 0.1 positive manual P 60 31.6461 105 -0.04 100
IV.MABI.HHZ. 2020-01-20T08:41:49.83 0.1 undecidable manual P 152 28.749 106 -0.4 93
CH.BERNI.HHZ. 2020-01-20T08:41:49.94 0.1 undecidable manual P 301 27.9498 107 -0.14 99
IV.BORM.HNE. 2020-01-20T08:41:49.22 0.1 undecidable manual P 9 20.868 112 0.49 93
IV.BRMO.HHZ. 2020-01-20T08:41:49.18 0.3 undecidable manual P 7 21.5673 111 0.32 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRMO.HHE. ML:1.2 0.0001037 0.64 AML other m 2020-01-20T08:41:52.08
IV.BRMO.HHN. ML:1.0 0.00007825 0.56 AML other m 2020-01-20T08:41:52.31
IV.MABI.HHN. ML:1.3 0.0001085 0.18 AML other m 2020-01-20T08:41:53.16
IV.MABI.HHE. ML:1.2 0.00008885000000000002 0.14 AML other m 2020-01-20T08:41:53.24
CH.BERNI.HHN. ML:1.0 0.000060950000000000004 1 AML other m 2020-01-20T08:41:54.01
CH.BERNI.HHE. ML:1.0 0.00005465000000000001 0.5 AML other m 2020-01-20T08:41:54.26
ST.CARE.EHE. ML:1.2 0.00006850000000000001 1.84 AML other m 2020-01-20T08:41:55.05
CH.FUORN.HHN. ML:1.0 0.000034085 0.44 AML other m 2020-01-20T08:41:56.57
ST.CARE.EHN. ML:1.2 0.00006654999999999999 0.46 AML other m 2020-01-20T08:41:57.39
SI.MOSI.HHN. ML:1.6 0.000154 0.3 AML other m 2020-01-20T08:41:58.65
CH.FUORN.HHE. ML:1.0 0.00003505 1.3 AML other m 2020-01-20T08:41:58.19
SI.MOSI.HHE. ML:1.6 0.0001385 0.34 AML other m 2020-01-20T08:41:59.35
IV.APPI.EHN. ML:1.7 0.00008255 0.9 AML other m 2020-01-20T08:42:07.50
IV.APPI.EHE. ML:1.6 0.00007065 0.6 AML other m 2020-01-20T08:42:07.38
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