Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 30-07-2021 and time 22:29:02 (Italy) in region 4 km E Grosio (SO)

A magnitude ML 1.6 earthquake occured in region: 4 km E Grosio (SO), on

  • 30-07-2021 20:29:02 (UTC)
  • 30-07-2021 22:29:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.2820, 10.3200 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
Grosio SO 4 4443 4443
Grosotto SO 5 1622 6065
Mazzo di Valtellina SO 6 1022 7087
Sondalo SO 6 4136 11223
Tovo di Sant'Agata SO 7 628 11851
Vervio SO 7 217 12068
Incudine BS 7 385 12453
Vezza d'Oglio BS 8 1457 13910
Monno BS 8 555 14465
Lovero SO 9 661 15126
Vione BS 11 691 15817
Sernio SO 11 486 16303
Edolo BS 12 4572 20875
Temù BS 12 1105 21980
Tirano SO 13 9130 31110
Sonico BS 13 1264 32374
Corteno Golgi BS 14 1976 34350
Ponte di Legno BS 15 1729 36079
Villa di Tirano SO 17 3000 39079
Valdisotto SO 17 3556 42635
Malonno BS 18 3261 45896
Aprica SO 19 1588 47484
Bianzone SO 19 1285 48769

Municipalities with at least 50000 inhabitants

An earthquake occurred to
66 Km W of Trento (117317 inhabitants)
82 Km NE of Bergamo (119381 inhabitants)
83 Km N of Brescia (196480 inhabitants)
83 Km W of Bolzano (106441 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 1.6 2021-07-30
20:29:02		 46.2818 10.3198 10 2021-12-29
11:12:50		 Bollettino Sismico Italiano INGV 97326591
Reviewed
Rev100 		ML 1.6 2021-07-30
20:29:02		 46.268 10.3217 6 2021-07-30
20:48:06		 Sala Sismica INGV-Roma 93415611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-30 20:29:02 ± 0.13
Latitude 46.2818 ± 0.0045
Longitude 10.3198 ± 0.0091
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 97326591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 699
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
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 38
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.15563
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 51
Type of magnitude ML
Reference to an origin 97326591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-05 17:26:28

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 52
Type of magnitude ML
Reference to an origin 93415611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-30 20:48:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SACS.HHZ. 2021-07-30T20:30:48.06 3.0 undecidable manual Sg 6.49 0
IV.CPGN.EHZ. 2021-07-30T20:30:33.82 3.0 undecidable manual Sg 10.78 0
IV.COR1.EHZ. 2021-07-30T20:29:59.17 3.0 positive manual Pg 5.9 0
CH.FUSIO.HHZ. 2021-07-30T20:29:24.80 0.3 undecidable manual P 279 128.2716 50 0.9 47
IV.CTI.HHZ. 2021-07-30T20:29:21.12 0.3 undecidable manual P 104 105.4167 50 0.74 53
CH.MUGIO.HHZ. 2021-07-30T20:29:20.58 0.3 undecidable manual P 248 106.116 50 0.09 64
ST.ZIAN.EHZ. 2021-07-30T20:29:19.40 0.3 undecidable manual P 90 95.3379 50 0.58 58
IV.ROVR.HHZ. 2021-07-30T20:29:18.57 0.3 undecidable manual P 140 91.242 50 0.38 62
ST.PANI.EHZ. 2021-07-30T20:29:17.28 0.3 undecidable manual P 108 82.0512 50 0.51 61
SI.KOSI.HHZ. 2021-07-30T20:29:17.47 0.1 undecidable manual P 76 83.4498 50 0.48 82
IV.ZEN8.EHZ. 2021-07-30T20:29:16.03 0.3 undecidable manual P 156 78.1662 50 -0.15 67
ST.DOSS.HHZ. 2021-07-30T20:29:16.98 0.1 undecidable manual P 123 80.2641 50 0.47 83
IV.SGAL.EHZ. 2021-07-30T20:29:16.16 0.6 undecidable manual P 181 79.6647 50 -0.25 43
SI.MOSI.HHZ. 2021-07-30T20:29:15.75 0.1 undecidable manual S 25 41.0256 50 -0.47 89
IV.SALO.HHZ. 2021-07-30T20:29:15.83 0.1 positive manual P 168 75.2691 50 0.1 90
CH.FUORN.HHZ. 2021-07-30T20:29:15.74 0.6 undecidable manual S 353 37.8288 50 0.39 46
ST.RONC.EHZ. 2021-07-30T20:29:15.07 0.6 undecidable manual S 145 40.7259 50 -1.08 35
ST.VARA.EHZ. 2021-07-30T20:29:14.38 0.1 positive manual P 139 67.2771 50 -0.12 91
CH.DAVOX.HHZ. 2021-07-30T20:29:14.54 0.1 negative manual P 329 64.6908 50 0.44 86
SI.LUSI.HHZ. 2021-07-30T20:29:13.08 0.3 undecidable manual P 126 59.7957 50 -0.27 67
IV.ZONE.HHZ. 2021-07-30T20:29:13.54 0.3 undecidable manual P 195 59.5959 50 0.23 68
ST.CARE.EHZ. 2021-07-30T20:29:13.80 0.3 undecidable manual S 61 32.8449 50 -0.22 71
ST.OZOL.EHZ. 2021-07-30T20:29:13.00 0.1 undecidable manual P 76 57.6978 50 -0.02 95
IV.MAGA.HHZ. 2021-07-30T20:29:13.26 0.3 undecidable manual P 157 60.9945 50 -0.28 67
ST.GAGG.HHZ. 2021-07-30T20:29:12.32 0.3 undecidable manual P 114 53.8017 50 -0.1 71
IV.BAG8.EHZ. 2021-07-30T20:29:12.01 0.1 positive manual P 167 52.1034 50 -0.16 93
CH.BERNI.HHZ. 2021-07-30T20:29:11.76 0.1 undecidable manual S 303 27.0507 50 -0.72 83
ST.RONC.EHZ. 2021-07-30T20:29:10.06 0.1 negative manual P 145 40.7259 50 -0.35 91
IV.BORM.HNE. 2021-07-30T20:29:10.20 0.3 undecidable manual S 12 21.2676 115 -0.53 68
SI.MOSI.HHZ. 2021-07-30T20:29:10.89 0.1 positive manual P 25 41.0256 50 0.43 90
IV.BRMO.HHZ. 2021-07-30T20:29:10.43 0.1 undecidable manual S 11 21.9669 115 -0.52 91
CH.FUORN.HHZ. 2021-07-30T20:29:10.15 0.1 negative manual P 353 37.8288 50 0.19 95
ST.CARE.EHZ. 2021-07-30T20:29:09.06 0.1 positive manual P 61 32.8449 50 -0.12 97
IT.BNO.HNE. 2021-07-30T20:29:09.68 0.3 undecidable manual P 184 37.0296 50 -0.16 72
IV.MABI.HHZ. 2021-07-30T20:29:08.12 0.1 negative manual P 149 29.2485 50 -0.52 89
CH.BERNI.HHZ. 2021-07-30T20:29:08.33 0.1 negative manual P 303 27.0507 50 0.03 100
IV.BORM.HNE. 2021-07-30T20:29:07.54 0.3 undecidable manual P 12 21.2676 115 0.25 72
IV.BRMO.HHZ. 2021-07-30T20:29:07.71 0.1 negative manual P 11 21.9669 115 0.3 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MABI.HHE. ML:1.5 0.00014749301000000002 0.0768 AML other m 2021-07-30T20:29:08.15
IV.BRMO.HHE. ML:1.8 0.00041308184999999995 0.0768 AML other m 2021-07-30T20:29:10.62
IV.BRMO.HHN. ML:1.7 0.0003205 0.14 AML other m 2021-07-30T20:29:10.79
IV.MABI.HHN. ML:1.4 0.00012409980000000002 0.064 AML other m 2021-07-30T20:29:11.83
CH.BERNI.HHE. ML:1.5 0.0001846398 0.1024 AML other m 2021-07-30T20:29:12.10
CH.BERNI.HHN. ML:1.5 0.00016649999999999998 0.24 AML other m 2021-07-30T20:29:12.70
ST.RONC.EHN. ML:1.9 0.00027797415000000006 0.2048 AML other m 2021-07-30T20:29:15.14
ST.RONC.EHE. ML:1.8 0.0002044139 0.1408 AML other m 2021-07-30T20:29:15.21
CH.FUORN.HHN. ML:1.3 0.00007071542999999999 0.192 AML other m 2021-07-30T20:29:15.78
CH.FUORN.HHE. ML:1.2 0.000063974375 0.2304 AML other m 2021-07-30T20:29:16.13
SI.MOSI.HHE. ML:2.0 0.00032724180000000004 0.3072 AML other m 2021-07-30T20:29:16.81
SI.MOSI.HHN. ML:1.9 0.00024277560000000002 1.7184 AML other m 2021-07-30T20:29:17.06
IV.BAG8.HNE. ML:2.0 0.0002322152 0.1792 AML other m 2021-07-30T20:29:17.91
IV.BAG8.EHN. ML:1.8 0.00015240805000000003 1.8464 AML other m 2021-07-30T20:29:17.00
IV.BAG8.EHE. ML:1.9 0.00021599999999999996 1.78 AML other m 2021-07-30T20:29:18.92
IV.BAG8.HNN. ML:1.8 0.00017566503999999998 0.128 AML other m 2021-07-30T20:29:18.20
ST.GAGG.HNN. ML:1.6 0.000097330745 0.1024 AML other m 2021-07-30T20:29:19.27
ST.GAGG.HHE. ML:1.7 0.00011650000000000001 0.1 AML other m 2021-07-30T20:29:19.27
IV.ZONE.HHE. ML:1.8 0.000136586115 0.2816 AML other m 2021-07-30T20:29:19.94
ST.GAGG.HHN. ML:1.5 0.00007428316999999999 0.2176 AML other m 2021-07-30T20:29:21.23
ST.GAGG.HNE. ML:1.6 0.00008612892499999999 0.2432 AML other m 2021-07-30T20:29:21.12
SI.LUSI.HHN. ML:2.0 0.000202 0.12 AML other m 2021-07-30T20:29:21.34
SI.LUSI.HHE. ML:1.6 0.00008290229000000001 0.1024 AML other m 2021-07-30T20:29:21.66
ST.OZOL.EHE. ML:1.7 0.00011765 1.52 AML other m 2021-07-30T20:29:21.04
IV.MAGA.HHN. ML:1.8 0.0001375 0.14 AML other m 2021-07-30T20:29:21.74
ST.OZOL.EHN. ML:1.6 0.00008089084499999999 0.32 AML other m 2021-07-30T20:29:21.82
IV.ZONE.HHN. ML:1.9 0.00015853605 1.8464 AML other m 2021-07-30T20:29:22.93
IV.MAGA.HHE. ML:1.8 0.00012065 0.2 AML other m 2021-07-30T20:29:22.34
CH.DAVOX.HHE. ML:1.7 0.000097362635 0.2688 AML other m 2021-07-30T20:29:24.83
ST.VARA.EHE. ML:1.6 0.00007056097999999999 0.2176 AML other m 2021-07-30T20:29:25.05
IV.SALO.HHE. ML:1.5 0.000043589655000000004 0.1536 AML other m 2021-07-30T20:29:25.13
IV.ZEN8.EHE. ML:1.2 0.000024609695000000002 1.7568 AML other m 2021-07-30T20:29:26.92
ST.DOSS.HHE. ML:1.7 0.00006649039 0.0768 AML other m 2021-07-30T20:29:26.76
IV.SGAL.EHN. ML:1.6 0.00005287615 0.0768 AML other m 2021-07-30T20:29:26.84
CH.DAVOX.HHN. ML:1.6 0.00007158629 1.808 AML other m 2021-07-30T20:29:26.01
IV.SGAL.EHE. ML:1.6 0.0000617 1.5 AML other m 2021-07-30T20:29:27.79
ST.PANI.EHE. ML:1.5 0.000038871665 0.1536 AML other m 2021-07-30T20:29:27.17
ST.PANI.EHN. ML:1.5 0.000040669635000000004 0.192 AML other m 2021-07-30T20:29:27.77
ST.DOSS.HHN. ML:1.5 0.00004506863 0.128 AML other m 2021-07-30T20:29:27.85
IV.SALO.HHN. ML:1.6 0.00005300000000000001 0.3 AML other m 2021-07-30T20:29:28.38
ST.DOSS.HNN. ML:1.6 0.00006144119604999999 0.2176 AML other m 2021-07-30T20:29:28.52
SI.KOSI.HHN. ML:1.2 0.000020312655 0.3584 AML other m 2021-07-30T20:29:29.47
SI.KOSI.HHE. ML:1.1 0.000016630695 0.32 AML other m 2021-07-30T20:29:31.56
ST.ZIAN.EHN. ML:1.3 0.000019965418 0.0768 AML other m 2021-07-30T20:29:31.89
ST.ZIAN.EHE. ML:1.3 0.000021052915 0.1152 AML other m 2021-07-30T20:29:33.15
IV.CTI.HHN. ML:2.0 0.000086177665 1.808 AML other m 2021-07-30T20:29:33.98
IV.CTI.HHE. ML:1.8 0.00006722322999999999 1.9232 AML other m 2021-07-30T20:29:34.98
CH.MUGIO.HHN. ML:1.7 0.000049850000000000006 0.32 AML other m 2021-07-30T20:29:34.13
CH.MUGIO.HHE. ML:1.6 0.000039999999999999996 0.34 AML other m 2021-07-30T20:29:34.69
CH.FUSIO.HHE. ML:1.5 0.000022022235 0.1664 AML other m 2021-07-30T20:29:42.06
CH.FUSIO.HHN. ML:1.6 0.000025750000000000002 0.74 AML other m 2021-07-30T20:29:44.12
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