Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 30-09-2023 and time 16:09:06 (UTC) in region 2 km N Tresivio (SO)

A magnitude ML 1.7 earthquake occured in region: 2 km N Tresivio (SO), on

  • 30-09-2023 16:09:06 (UTC)
  • 30-09-2023 18:09:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.1940, 9.9470 at 12 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
Tresivio SO 2 2030 2030
Poggiridenti SO 2 1924 3954
Ponte in Valtellina SO 3 2362 6316
Piateda SO 4 2219 8535
Montagna in Valtellina SO 4 3032 11567
Chiuro SO 4 2534 14101
Faedo Valtellino SO 5 566 14667
Sondrio SO 6 21778 36445
Spriana SO 7 97 36542
Castello dell'Acqua SO 8 622 37164
Torre di Santa Maria SO 9 773 37937
Albosaggia SO 9 3094 41031
Teglio SO 9 4540 45571
Lanzada SO 10 1341 46912
Caspoggio SO 10 1411 48323
Chiesa in Valmalenco SO 11 2514 50837
Caiolo SO 11 1085 51922
Castione Andevenno SO 12 1575 53497
Bianzone SO 13 1285 54782
Postalesio SO 13 657 55439
Villa di Tirano SO 14 3000 58439
Cedrasco SO 15 460 58899
Berbenno di Valtellina SO 16 4210 63109
Fusine SO 16 579 63688
Aprica SO 17 1588 65276
Colorina SO 17 1410 66686
Tirano SO 18 9130 75816
Valbondione BG 18 1065 76881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
60 Km NE of Bergamo (119381 inhabitants)
76 Km NW of Brescia (196480 inhabitants)
79 Km NE of Como (84495 inhabitants)
85 Km NE of Monza (122671 inhabitants)
91 Km NE of Cinisello Balsamo (75078 inhabitants)
92 Km NE of Sesto San Giovanni (81608 inhabitants)
92 Km W of Trento (117317 inhabitants)
96 Km E of Varese (80799 inhabitants)
100 Km NE of Milano (1345851 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 1.7 2023-09-30
16:09:06		 46.194 9.9472 12 2023-09-30
16:22:18		 Sala Sismica INGV-Roma 121620321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-30 16:09:06 ± 0.06
Latitude 46.1940 ± 0.0045
Longitude 9.9472 ± 0.0052
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121620321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 162
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 35
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 36
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) 1.11966
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 22
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 121620321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-30 16:22:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RCAV.EHZ. 2023-09-30T16:10:31.81 3.0 undecidable manual Pg 14.3 0
IV.LMD.HHZ. 2023-09-30T16:10:25.89 3.0 undecidable manual Sg 11.38 0
IV.ARRO.EHZ. 2023-09-30T16:10:12.90 3.0 positive manual Pn 5.18 0
IV.SNTG.HHZ. 2023-09-30T16:10:07.89 3.0 undecidable manual Pg 7.16 0
ST.PANI.EHZ. 2023-09-30T16:09:38.22 3.0 undecidable manual S -0.11 0
ST.DOSS.HHZ. 2023-09-30T16:09:36.63 0.3 undecidable manual S 110 101.7204 90 0.14 67
CH.FUSIO.HHZ. 2023-09-30T16:09:36.28 0.3 undecidable manual S 287 102.5196 90 -0.43 62
OX.VARN.HHZ. 2023-09-30T16:09:36.17 3.0 undecidable manual Pg 4.49 0
IV.ZOVE.EHZ. 2023-09-30T16:09:32.48 3.0 positive manual Pg 3.66 0
ST.VARA.EHZ. 2023-09-30T16:09:31.60 0.3 undecidable manual S 119 83.7495 91 -0.1 70
SI.LUSI.HHZ. 2023-09-30T16:09:30.53 0.6 undecidable manual S 108 80.9523 91 -0.42 44
ST.ZIAN.EHZ. 2023-09-30T16:09:28.22 0.1 undecidable manual P 85 124.2867 90 0.76 71
IV.ROVR.HHZ. 2023-09-30T16:09:27.23 3.0 negative manual P 3.21 0
IV.MAGA.HHZ. 2023-09-30T16:09:27.93 0.6 undecidable manual S 131 70.0743 91 -0.13 48
IV.MERA.HNE. 2023-09-30T16:09:27.32 0.6 undecidable manual S 217 67.377 91 0 49
SI.MOSI.HHZ. 2023-09-30T16:09:26.33 0.3 undecidable manual S 44 65.6898 91 -0.55 65
SI.KOSI.HHZ. 2023-09-30T16:09:26.35 0.1 undecidable manual P 74 113.5974 90 0.55 79
CH.DAVOX.HHZ. 2023-09-30T16:09:26.57 0.6 undecidable manual S 355 65.2902 91 -0.19 47
ST.DOSS.HHZ. 2023-09-30T16:09:24.79 0.1 undecidable manual P 110 101.7204 90 0.81 73
CH.FUSIO.HHZ. 2023-09-30T16:09:24.48 0.1 undecidable manual P 287 102.5196 90 0.38 85
IV.BAG8.EHZ. 2023-09-30T16:09:24.19 0.3 undecidable manual S 136 57.3981 91 -0.47 68
MN.TUE.HHZ. 2023-09-30T16:09:23.61 0.3 undecidable manual S 304 55.3002 91 -0.51 66
IV.VARE.HHZ. 2023-09-30T16:09:23.63 0.1 undecidable manual P 249 97.6245 90 0.28 88
ST.RONC.EHZ. 2023-09-30T16:09:23.85 0.6 undecidable manual S 114 57.0984 91 -0.74 41
IV.MDI.HHZ. 2023-09-30T16:09:22.59 0.3 undecidable manual S 201 50.3163 91 -0.19 73
IV.BRMO.HHZ. 2023-09-30T16:09:21.04 0.3 undecidable manual S 46 45.1215 91 -0.36 71
ST.VARA.EHZ. 2023-09-30T16:09:21.28 0.1 undecidable manual P 119 83.7495 91 0.07 94
ST.GAGG.HHZ. 2023-09-30T16:09:20.45 0.1 undecidable manual P 99 78.6657 91 0.02 96
SI.LUSI.HHZ. 2023-09-30T16:09:20.77 0.1 undecidable manual P 108 80.9523 91 -0.01 96
IV.MAGA.HHZ. 2023-09-30T16:09:19.18 1.0 positive manual P 131 70.0743 91 0.07 24
CH.MUGIO.HHZ. 2023-09-30T16:09:19.67 1.0 positive manual P 247 75.9684 91 -0.34 22
IV.MERA.HNE. 2023-09-30T16:09:18.72 0.1 undecidable manual P 217 67.377 91 0.04 98
SI.MOSI.HHZ. 2023-09-30T16:09:18.49 0.1 undecidable manual P 44 65.6898 91 0.06 97
CH.DAVOX.HHZ. 2023-09-30T16:09:18.73 0.1 undecidable manual P 355 65.2902 91 0.37 92
ST.CARE.EHZ. 2023-09-30T16:09:17.74 0.1 undecidable manual P 66 62.7927 91 -0.23 94
ST.RONC.EHZ. 2023-09-30T16:09:17.33 0.1 undecidable manual P 114 57.0984 91 0.22 96
IV.BAG8.EHZ. 2023-09-30T16:09:17.29 0.1 undecidable manual P 136 57.3981 91 0.14 97
MN.TUE.HHZ. 2023-09-30T16:09:16.89 0.6 positive manual P 304 55.3002 91 0.06 50
IV.MDI.HHZ. 2023-09-30T16:09:15.89 0.1 undecidable manual P 201 50.3163 91 -0.17 97
IV.MABI.HHZ. 2023-09-30T16:09:15.32 0.1 undecidable manual P 109 46.2204 91 -0.11 100
CH.BERNI.HHZ. 2023-09-30T16:09:15.79 0.6 undecidable manual S 13 25.0527 93 -0.24 50
IV.BRMO.HHZ. 2023-09-30T16:09:15.15 1.0 positive manual P 46 45.1215 91 -0.11 25
IT.BNO.HNE. 2023-09-30T16:09:13.93 0.1 undecidable manual P 136 37.9287 92 -0.22 99
CH.BERNI.HHZ. 2023-09-30T16:09:12.38 0.3 negative manual P 13 25.0527 93 0.21 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
CH.BERNI.HHE. ML:1.8 0.000328 1.74 AML other m 2023-09-30T16:09:16.00
CH.BERNI.HHN. ML:1.6 0.00023799999999999998 0.38 AML other m 2023-09-30T16:09:16.24
IV.MABI.HHN. ML:2.2 0.000508 0.08 AML other m 2023-09-30T16:09:20.67
IV.BRMO.HHE. ML:1.2 0.00004314999999999999 0.5 AML other m 2023-09-30T16:09:21.30
IV.MABI.HHE. ML:1.6 0.0001255 1.06 AML other m 2023-09-30T16:09:21.72
IV.BRMO.HHN. ML:1.4 0.0000626 0.52 AML other m 2023-09-30T16:09:21.16
IV.MDI.HHN. ML:1.6 0.0001115 0.38 AML other m 2023-09-30T16:09:23.56
IV.MDI.HHE. ML:1.7 0.0001295 1.04 AML other m 2023-09-30T16:09:23.60
MN.TUE.HHE. ML:1.4 0.00005295 1.54 AML other m 2023-09-30T16:09:24.85
ST.RONC.EHE. ML:2.2 0.00035350000000000003 0.16 AML other m 2023-09-30T16:09:24.25
MN.TUE.HNN. ML:1.6 0.00008465 0.48 AML other m 2023-09-30T16:09:24.69
MN.TUE.HHN. ML:1.6 0.00009329999999999999 0.48 AML other m 2023-09-30T16:09:24.69
ST.RONC.EHN. ML:2.4 0.0005949999999999999 0.16 AML other m 2023-09-30T16:09:24.78
IV.BAG8.EHN. ML:2.2 0.0003305 0.84 AML other m 2023-09-30T16:09:24.52
IV.BAG8.EHE. ML:1.9 0.0001805 1.34 AML other m 2023-09-30T16:09:24.32
MN.TUE.HNE. ML:1.4 0.00006225 0.6 AML other m 2023-09-30T16:09:26.47
CH.DAVOX.HHE. ML:1.8 0.0001325 0.46 AML other m 2023-09-30T16:09:26.50
ST.CARE.EHE. ML:1.0 0.00002165 0.44 AML other m 2023-09-30T16:09:27.53
ST.CARE.EHN. ML:1.2 0.0000281 0.66 AML other m 2023-09-30T16:09:27.93
CH.DAVOX.HHN. ML:1.8 0.0001063 1.28 AML other m 2023-09-30T16:09:28.71
SI.MOSI.HHE. ML:1.6 0.00007155 0.72 AML other m 2023-09-30T16:09:28.42
IV.MAGA.HHN. ML:2.1 0.000228 0.94 AML other m 2023-09-30T16:09:28.99
IV.MAGA.HHE. ML:2.0 0.00015799999999999996 0.46 AML other m 2023-09-30T16:09:29.82
CH.MUGIO.HHE. ML:1.4 0.000040100000000000006 0.24 AML other m 2023-09-30T16:09:30.24
ST.GAGG.HHN. ML:1.8 0.00008324999999999999 0.54 AML other m 2023-09-30T16:09:30.63
ST.GAGG.HHE. ML:1.8 0.0000942 1.14 AML other m 2023-09-30T16:09:30.21
SI.MOSI.HHN. ML:1.6 0.0000648 1.36 AML other m 2023-09-30T16:09:30.10
SI.LUSI.HHE. ML:1.8 0.00009095 1.04 AML other m 2023-09-30T16:09:31.70
SI.LUSI.HHN. ML:1.9 0.000106 0.66 AML other m 2023-09-30T16:09:31.70
CH.MUGIO.HHN. ML:1.4 0.0000373 0.74 AML other m 2023-09-30T16:09:31.21
ST.VARA.EHN. ML:1.7 0.00006865 0.26 AML other m 2023-09-30T16:09:32.30
ST.VARA.EHE. ML:2.0 0.00013000000000000002 1.62 AML other m 2023-09-30T16:09:32.83
CH.FUSIO.HHN. ML:1.6 0.0000363 0.18 AML other m 2023-09-30T16:09:37.19
ST.DOSS.HHN. ML:1.9 0.00007405000000000001 0.74 AML other m 2023-09-30T16:09:38.11
CH.FUSIO.HHE. ML:1.6 0.00004015 1.12 AML other m 2023-09-30T16:09:39.20
ST.DOSS.HHE. ML:1.7 0.000050100000000000005 1.24 AML other m 2023-09-30T16:09:40.12
IV.ZOVE.EHE. ML:1.7 0.000024050000000000002 0.42 AML other m 2023-09-30T16:09:49.72
IV.ZOVE.EHN. ML:1.7 0.0000275 1.18 AML other m 2023-09-30T16:09:50.76
IV.ZOVE.HNN. ML:3.0 0.0005865 0.96 AML other m 2023-09-30T16:10:13.07
IV.ZOVE.HNE. ML:3.0 0.000516 1.18 AML other m 2023-09-30T16:10:13.07
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