Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 10-02-2023 and time 22:03:11 (Italy) in region 2 km W Siena (SI)

A magnitude ML 2.2 earthquake occured in region: 2 km W Siena (SI), on

  • 10-02-2023 21:03:11 (UTC)
  • 10-02-2023 22:03:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3140, 11.3130 at 9 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
Siena SI 2 53903 53903
Sovicille SI 8 10116 64019
Monteriggioni SI 12 9810 73829
Monteroni d'Arbia SI 13 9088 82917
Castelnuovo Berardenga SI 16 9097 92014
Murlo SI 17 2389 94403
Castellina in Chianti SI 18 2859 97262
Colle di Val d'Elsa SI 20 21620 118882
Radda in Chianti SI 20 1613 120495
Gaiole in Chianti SI 20 2758 123253

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km W of Siena (53903 inhabitants)
49 Km W of Arezzo (99543 inhabitants)
51 Km S of Scandicci (50609 inhabitants)
51 Km S of Firenze (382808 inhabitants)
64 Km N of Grosseto (82087 inhabitants)
65 Km S of Prato (191150 inhabitants)
76 Km SE of Pistoia (90315 inhabitants)
85 Km E of Livorno (159219 inhabitants)
86 Km SE of Pisa (89158 inhabitants)
88 Km SE of Lucca (89046 inhabitants)
90 Km W of Perugia (166134 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 2.2 2023-02-10
21:03:11		 43.3143 11.3128 9 2024-03-01
17:18:11		 Bollettino Sismico Italiano INGV 118344071
Reviewed
Rev100 		ML 2.2 2023-02-10
21:03:11		 43.3223 11.3083 8 2023-02-10
21:08:32		 Sala Sismica INGV-Roma 114329181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-10 21:03:11 ± 0.09
Latitude 43.3143 ± 0.0036
Longitude 11.3128 ± 0.0074
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118344071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 429
Semi-minor axis of confidence ellipse (meter) 407
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 51
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.15468
Epicentral distance of station farthest from the epicenter (degree) 0.98476
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 52
Type of magnitude ML
Reference to an origin 118344071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-24 08:36:44

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 52
Type of magnitude ML
Reference to an origin 114329181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-10 21:08:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.MAIM.HHZ. 2023-02-10T21:03:38.90 0.6 undecidable manual S 315 93.6396 50 -0.44 41
IV.ATPI.EHZ. 2023-02-10T21:03:38.20 0.3 undecidable manual S 80 89.1441 50 0.06 68
IV.PII.HHZ. 2023-02-10T21:03:34.70 1.0 undecidable manual S 306 77.8665 50 -0.43 21
IV.SSP9.EHZ. 2023-02-10T21:03:33.60 0.6 undecidable manual S 66 71.9724 50 0.05 47
IV.CASP.HHZ. 2023-02-10T21:03:32.90 1.0 undecidable manual S 212 68.4759 50 0.27 23
IV.CELB.HHE. 2023-02-10T21:03:31.35 0.3 undecidable manual P 235 109.3128 50 1.41 39
IV.CRE.HHZ. 2023-02-10T21:03:31.30 0.6 undecidable manual S 56 61.494 50 0.52 43
IV.CRMI.HNN. 2023-02-10T21:03:29.80 0.6 undecidable manual S 333 59.6958 50 -0.5 44
IV.RUFI.EHZ. 2023-02-10T21:03:29.80 0.3 undecidable manual S 15 60.1953 50 -0.62 62
TV.SF11.HHZ. 2023-02-10T21:03:29.20 1.0 undecidable manual S 149 57.5979 50 -0.54 22
GU.POPM.HHZ. 2023-02-10T21:03:28.13 0.3 undecidable manual P 331 92.5407 50 0.78 55
IV.ARCI.HHZ. 2023-02-10T21:03:28.70 1.0 undecidable manual S 166 52.9026 50 0.22 23
GU.MAIM.HHZ. 2023-02-10T21:03:27.49 0.3 undecidable manual P 315 93.6396 50 -0.03 68
IV.ATPI.EHZ. 2023-02-10T21:03:27.23 0.1 undecidable manual P 80 89.1441 50 0.4 84
IV.LMD.HHZ. 2023-02-10T21:03:27.21 0.3 undecidable manual P 20 90.3429 50 0.19 66
IV.ATVO.HHZ. 2023-02-10T21:03:27.32 0.6 undecidable manual P 85 88.5447 50 0.58 40
IV.SEI.HHZ. 2023-02-10T21:03:26.26 0.6 undecidable manual P 3 82.1511 50 0.5 42
IV.PARC.HHZ. 2023-02-10T21:03:26.26 0.3 undecidable manual P 63 83.25 50 0.34 65
IV.PII.HHZ. 2023-02-10T21:03:25.26 0.1 undecidable manual P 306 77.8665 50 0.17 90
IV.SFI.HNN. 2023-02-10T21:03:25.55 0.6 undecidable manual P 33 78.2661 50 0.39 43
IV.ATMI.HHZ. 2023-02-10T21:03:25.77 0.6 undecidable manual P 88 77.0673 50 0.8 37
IV.MGAB.HHZ. 2023-02-10T21:03:25.38 0.6 undecidable manual P 124 78.5658 50 0.18 45
IV.CASP.HHZ. 2023-02-10T21:03:24.16 0.6 undecidable manual P 212 68.4759 50 0.51 43
IV.SSP9.EHZ. 2023-02-10T21:03:24.65 0.6 undecidable manual P 66 71.9724 50 0.47 43
IV.VMGN.HHN. 2023-02-10T21:03:24.83 0.3 undecidable manual P 14 73.1712 50 0.46 64
IV.TRIF.CHZ. 2023-02-10T21:03:24.80 0.6 undecidable manual S 236 39.8268 50 -0.2 48
IV.SACS.HHZ. 2023-02-10T21:03:24.21 0.3 undecidable manual P 137 70.6737 50 0.22 68
IV.MALA5.EHN. 2023-02-10T21:03:23.30 1.0 undecidable manual S 159 36.6411 50 -0.83 20
IV.MALA2.EHN. 2023-02-10T21:03:23.40 1.0 undecidable manual S 159 36.9297 50 -0.82 20
IV.MCIV.CHZ. 2023-02-10T21:03:23.31 0.3 undecidable manual P 153 66.2781 50 0 72
IV.MALA1.EHN. 2023-02-10T21:03:23.80 0.3 undecidable manual S 159 36.9297 50 -0.41 70
IV.MALA4.EHZ. 2023-02-10T21:03:23.70 0.1 undecidable manual S 159 36.741 50 -0.46 92
IV.MALA0.EHN. 2023-02-10T21:03:23.60 1.0 undecidable manual S 159 36.6411 50 -0.52 23
IV.CRMI.HNN. 2023-02-10T21:03:22.32 0.6 undecidable manual P 333 59.6958 50 0.02 48
IV.RUFI.EHZ. 2023-02-10T21:03:22.44 0.1 undecidable manual P 15 60.1953 50 0.06 95
TV.SF11.HHZ. 2023-02-10T21:03:22.02 0.6 undecidable manual P 149 57.5979 50 0.05 48
IV.CRE.HHZ. 2023-02-10T21:03:22.86 0.3 undecidable manual P 56 61.494 50 0.28 68
IV.ARCI.HHZ. 2023-02-10T21:03:21.22 0.1 undecidable manual P 166 52.9026 50 -0.04 97
IV.CAFI.HHZ. 2023-02-10T21:03:21.04 0.3 undecidable manual P 88 52.8027 50 -0.19 71
IV.TRIF.CHZ. 2023-02-10T21:03:19.26 0.1 undecidable manual P 236 39.8268 50 0.02 100
IV.OSSC.HHZ. 2023-02-10T21:03:19.60 0.6 undecidable manual S 347 23.8539 110 -0.58 45
IV.FROS.CHZ. 2023-02-10T21:03:18.40 0.3 undecidable manual S 228 17.1717 117 0.34 73
IV.MALA2.EHN. 2023-02-10T21:03:18.53 0.3 undecidable manual P 159 36.9297 50 -0.26 72
IV.MALA4.EHZ. 2023-02-10T21:03:18.48 0.1 undecidable manual P 159 36.741 50 -0.28 95
IV.MALA1.EHN. 2023-02-10T21:03:18.51 0.1 undecidable manual P 159 36.9297 50 -0.27 95
IV.MALA5.EHN. 2023-02-10T21:03:18.41 0.3 undecidable manual P 159 36.6411 50 -0.33 71
IV.MALA0.EHN. 2023-02-10T21:03:18.47 0.1 undecidable manual P 159 36.6411 50 -0.27 96
IV.CSNT.HHZ. 2023-02-10T21:03:17.60 0.1 undecidable manual S 354 17.6712 116 -0.63 89
IV.OSSC.HHZ. 2023-02-10T21:03:16.17 0.1 negative manual P 347 23.8539 110 -0.29 97
IV.CSNT.HHZ. 2023-02-10T21:03:15.06 0.1 undecidable manual P 354 17.6712 116 -0.27 99
IV.FROS.CHZ. 2023-02-10T21:03:15.69 0.1 positive manual P 228 17.1717 117 0.45 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHN. ML:2.5 0.00259 0.14 AML other m 2023-02-10T21:03:17.80
IV.CSNT.HHE. ML:2.4 0.002125 0.48 AML other m 2023-02-10T21:03:17.95
IV.FROS.CHE. ML:2.6 0.003895 0.18 AML other m 2023-02-10T21:03:18.64
IV.FROS.CHN. ML:2.7 0.004115000000000001 0.14 AML other m 2023-02-10T21:03:19.09
IV.OSSC.HHE. ML:2.6 0.00271 1.76 AML other m 2023-02-10T21:03:20.06
IV.OSSC.HHN. ML:2.4 0.0017250000000000002 0.18 AML other m 2023-02-10T21:03:20.35
IV.TRIF.CHE. ML:2.5 0.0010979999999999998 0.8 AML other m 2023-02-10T21:03:26.63
IV.TRIF.CHN. ML:2.2 0.0006365 1.02 AML other m 2023-02-10T21:03:26.76
IV.CAFI.HHN. ML:2.2 0.00040300000000000004 0.48 AML other m 2023-02-10T21:03:27.93
IV.CAFI.HNN. ML:2.2 0.000397 0.48 AML other m 2023-02-10T21:03:27.93
IV.CAFI.HHE. ML:2.2 0.0003625 0.32 AML other m 2023-02-10T21:03:28.37
IV.CAFI.HNE. ML:2.2 0.0003485 0.3 AML other m 2023-02-10T21:03:28.37
IV.ARCI.HHN. ML:2.3 0.000451 0.48 AML other m 2023-02-10T21:03:29.61
IV.RUFI.EHE. ML:2.3 0.0003945 0.6 AML other m 2023-02-10T21:03:30.67
IV.ARCI.HNN. ML:2.2 0.000434 0.32 AML other m 2023-02-10T21:03:30.62
IV.ARCI.HNE. ML:2.3 0.000507 0.84 AML other m 2023-02-10T21:03:30.90
IV.ARCI.HHE. ML:2.3 0.000508 0.84 AML other m 2023-02-10T21:03:30.90
IV.RUFI.EHN. ML:2.1 0.00025550000000000003 0.34 AML other m 2023-02-10T21:03:30.69
IV.CRE.HHN. ML:2.2 0.0003255 0.82 AML other m 2023-02-10T21:03:32.84
IV.MCIV.CHN. ML:2.0 0.00016350000000000002 0.28 AML other m 2023-02-10T21:03:34.42
IV.CASP.HNN. ML:2.4 0.0004375 0.38 AML other m 2023-02-10T21:03:35.37
IV.CASP.HHN. ML:2.4 0.00044 0.34 AML other m 2023-02-10T21:03:35.35
IV.CASP.HHE. ML:2.2 0.000304 0.88 AML other m 2023-02-10T21:03:35.77
IV.CASP.HNE. ML:2.3 0.00032099999999999994 0.72 AML other m 2023-02-10T21:03:35.20
IV.MCIV.CHE. ML:2.0 0.0001835 0.44 AML other m 2023-02-10T21:03:35.64
IV.SSP9.EHE. ML:2.1 0.00019700000000000002 0.42 AML other m 2023-02-10T21:03:36.09
IV.CRE.HHE. ML:2.2 0.00027749999999999997 0.56 AML other m 2023-02-10T21:03:36.55
IV.PII.HHE. ML:2.2 0.00025550000000000003 1.18 AML other m 2023-02-10T21:03:36.18
IV.SACS.HHN. ML:1.7 0.00009125 0.76 AML other m 2023-02-10T21:03:37.38
IV.PII.HHN. ML:2.2 0.000247 0.24 AML other m 2023-02-10T21:03:37.80
IV.SSP9.EHN. ML:2.2 0.0002405 0.46 AML other m 2023-02-10T21:03:38.23
IV.SEI.HHE. ML:2.4 0.0003095 1.18 AML other m 2023-02-10T21:03:38.68
IV.SEI.HHN. ML:2.5 0.00046350000000000004 0.56 AML other m 2023-02-10T21:03:38.54
IV.PARC.HHN. ML:2.1 0.00017649999999999998 0.62 AML other m 2023-02-10T21:03:38.86
IV.MGAB.HHE. ML:2.1 0.0001675 1.16 AML other m 2023-02-10T21:03:38.33
IV.PARC.HHE. ML:2.1 0.000155 1.2 AML other m 2023-02-10T21:03:39.27
IV.ATMI.HHN. ML:2.5 0.00048650000000000006 1.48 AML other m 2023-02-10T21:03:39.77
IV.ATVO.HHE. ML:2.1 0.0001675 0.44 AML other m 2023-02-10T21:03:40.84
IV.MGAB.HHN. ML:2.2 0.00020700000000000002 1.12 AML other m 2023-02-10T21:03:40.87
IV.LMD.HHE. ML:1.9 0.0000959 0.36 AML other m 2023-02-10T21:03:41.18
IV.ATPI.EHN. ML:2.1 0.0001605 0.4 AML other m 2023-02-10T21:03:41.42
IV.SACS.HHE. ML:1.7 0.00008735 0.4 AML other m 2023-02-10T21:03:41.51
GU.MAIM.HHE. ML:1.7 0.000047850000000000004 0.34 AML other m 2023-02-10T21:03:42.59
IV.ATPI.EHE. ML:2.0 0.0001171 1.32 AML other m 2023-02-10T21:03:42.31
IV.ATMI.HHE. ML:2.6 0.000655 1.68 AML other m 2023-02-10T21:03:43.86
GU.POPM.HHE. ML:1.9 0.00009520000000000001 1.38 AML other m 2023-02-10T21:03:43.89
IV.LMD.HHN. ML:1.9 0.00009520000000000001 0.52 AML other m 2023-02-10T21:03:43.93
GU.MAIM.HHN. ML:1.8 0.00006570000000000001 0.34 AML other m 2023-02-10T21:03:44.22
GU.POPM.HHN. ML:2.0 0.0001105 1.02 AML other m 2023-02-10T21:03:44.69
IV.ATVO.HHN. ML:2.2 0.00017449999999999999 1.58 AML other m 2023-02-10T21:03:47.19
IV.CELB.HHN. ML:2.0 0.0000854 0.68 AML other m 2023-02-10T21:03:48.13
IV.CELB.HHE. ML:2.0 0.00008834999999999999 0.42 AML other m 2023-02-10T21:03:50.21
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
Waveforms Seismic signals in miniseed + resp format Download