Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 11-02-2023 and time 08:33:06 (UTC) in region 2 km SE Siena (SI)

A magnitude ML 2.5 earthquake occured in region: 2 km SE Siena (SI), on

  • 11-02-2023 08:33:06 (UTC)
  • 11-02-2023 09:33:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3080, 11.3580 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
Monteroni d'Arbia SI 10 9088 62991
Sovicille SI 11 10116 73107
Castelnuovo Berardenga SI 13 9097 82204
Monteriggioni SI 15 9810 92014
Murlo SI 16 2389 94403
Asciano SI 18 7118 101521
Castellina in Chianti SI 19 2859 104380
Gaiole in Chianti SI 19 2758 107138
Radda in Chianti SI 20 1613 108751

Municipalities with at least 50000 inhabitants

An earthquake occurred to
2 Km SE of Siena (53903 inhabitants)
46 Km W of Arezzo (99543 inhabitants)
52 Km S of Firenze (382808 inhabitants)
52 Km S of Scandicci (50609 inhabitants)
64 Km NE of Grosseto (82087 inhabitants)
67 Km SE of Prato (191150 inhabitants)
78 Km SE of Pistoia (90315 inhabitants)
87 Km W of Perugia (166134 inhabitants)
89 Km E of Livorno (159219 inhabitants)
89 Km SE of Pisa (89158 inhabitants)
91 Km SE of Lucca (89046 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 2.5 2023-02-11
08:33:06		 43.3082 11.3577 9 2024-03-01
17:18:07		 Bollettino Sismico Italiano INGV 117278021
Reviewed
Rev100 		ML 2.5 2023-02-11
08:33:06		 43.3103 11.3788 6 2023-02-11
08:41:23		 Sala Sismica INGV-Roma 114338121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-11 08:33:06 ± 0.09
Latitude 43.3082 ± 0.0036
Longitude 11.3577 ± 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 117278021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 509
Semi-minor axis of confidence ellipse (meter) 410
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 62
Number of defining phases 62
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.17177
Epicentral distance of station farthest from the epicenter (degree) 1.88498
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 88
Type of magnitude ML
Reference to an origin 117278021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-09-03 22:29:45

ML:2.5

Field Value
Value 2.5
Uncertainty 0.2
Num. used stations 68
Type of magnitude ML
Reference to an origin 114338121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-11 08:41:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RD.PGF.BHZ. 2023-02-11T08:33:39.45 0.3 undecidable manual P 247 209.235 38 -0.51 40
IV.MMO1.EHZ. 2023-02-11T08:33:33.97 0.3 undecidable manual P 105 165.8118 50 -0.23 54
IV.CSP1.EHZ. 2023-02-11T08:33:32.57 0.6 undecidable manual P 98 151.3374 50 0.61 35
IV.FDMO.HHZ. 2023-02-11T08:33:31.28 0.6 undecidable manual P 102 143.1456 50 0.57 36
GU.EQUI.HHZ. 2023-02-11T08:33:30.16 0.3 undecidable manual P 315 135.5643 50 0.62 54
IV.ATMI.HHZ. 2023-02-11T08:33:29.21 0.6 undecidable manual S 87 73.5708 50 -0.32 44
IV.MML1.EHZ. 2023-02-11T08:33:29.53 0.6 undecidable manual P 99 132.2676 50 0.5 38
IV.SSP9.EHZ. 2023-02-11T08:33:28.43 0.3 undecidable manual S 64 68.9754 50 0.13 70
IV.CELB.HHZ. 2023-02-11T08:33:27.18 0.3 undecidable manual P 237 111.8991 50 1.28 42
IV.BOSL.HHZ. 2023-02-11T08:33:27.95 0.6 undecidable manual S 1 69.0753 50 -0.39 44
IV.MOMA.HHZ. 2023-02-11T08:33:26.36 0.3 undecidable manual P 119 113.0979 50 0.28 62
IV.SSFR.HHZ. 2023-02-11T08:33:26.87 0.6 undecidable manual P 82 115.7952 50 0.38 40
IV.CRE.HHZ. 2023-02-11T08:33:25.25 0.6 undecidable manual S 54 58.9965 50 -0.39 45
IV.BDI.HHZ. 2023-02-11T08:33:25.14 0.3 undecidable manual P 324 103.6185 50 0.52 60
IV.RUFI.EHZ. 2023-02-11T08:33:25.28 0.6 undecidable manual S 12 59.9955 50 -0.64 41
IV.FNVD.HHZ. 2023-02-11T08:33:24.00 0.6 undecidable manual P 349 97.2249 50 0.37 42
IV.ATFO.HHZ. 2023-02-11T08:33:24.50 0.3 undecidable manual P 86 98.124 50 0.72 56
IV.PIEI.HHZ. 2023-02-11T08:33:24.12 0.3 undecidable manual P 75 98.124 50 0.34 63
GU.POPM.HHZ. 2023-02-11T08:33:23.61 0.6 undecidable manual P 330 94.9383 50 0.34 42
TV.SF11.HHZ. 2023-02-11T08:33:23.56 0.6 undecidable manual S 152 55.3002 50 -1.09 34
GU.MAIM.HHZ. 2023-02-11T08:33:23.72 0.3 undecidable manual P 314 96.6255 50 0.18 66
IV.MURB.HHZ. 2023-02-11T08:33:23.85 0.6 undecidable manual P 93 94.3389 50 0.66 39
IV.LMD.HHZ. 2023-02-11T08:33:22.73 0.3 undecidable manual P 18 89.8434 50 0.24 66
IV.LATE.HHZ. 2023-02-11T08:33:22.25 0.3 undecidable manual P 155 85.1481 50 0.48 63
IV.ARCI.HHZ. 2023-02-11T08:33:22.85 0.6 undecidable manual S 169 51.5151 50 -0.8 39
IV.SEI.HHZ. 2023-02-11T08:33:21.72 0.3 undecidable manual P 0 82.7505 50 0.32 65
IV.ATPI.EHZ. 2023-02-11T08:33:21.80 0.6 undecidable manual P 79 85.6476 50 -0.05 46
IV.PARC.HHZ. 2023-02-11T08:33:21.12 0.3 undecidable manual P 62 80.364 50 0.09 69
IV.SFI.EHZ. 2023-02-11T08:33:20.85 0.3 undecidable manual P 31 76.9674 50 0.34 66
IV.MPPT.EHZ. 2023-02-11T08:33:20.12 0.3 undecidable manual P 344 75.1692 50 -0.11 69
IV.ATMI.HHZ. 2023-02-11T08:33:20.38 0.3 undecidable manual P 87 73.5708 50 0.4 65
IV.PII.HHZ. 2023-02-11T08:33:20.93 0.6 undecidable manual P 305 81.1521 50 -0.23 45
IV.BADI.EHZ. 2023-02-11T08:33:20.48 0.3 undecidable manual P 72 74.8695 50 0.29 67
IV.MGAB.HHZ. 2023-02-11T08:33:20.15 0.3 undecidable manual P 125 75.2691 50 -0.09 70
IV.CASP.HHZ. 2023-02-11T08:33:20.15 0.3 undecidable manual P 215 69.8745 50 0.73 59
IV.SACS.HHZ. 2023-02-11T08:33:19.24 0.3 undecidable manual P 139 67.7766 50 0.14 70
IV.SSP9.EHZ. 2023-02-11T08:33:19.73 0.3 undecidable manual P 64 68.9754 50 0.46 65
IV.BOSL.HHZ. 2023-02-11T08:33:19.19 0.1 undecidable manual P 1 69.0753 50 -0.11 94
IV.MALA1.EHE. 2023-02-11T08:33:18.79 0.3 undecidable manual S 164 35.1426 50 -0.48 69
IV.MCIV.CHZ. 2023-02-11T08:33:18.67 0.3 undecidable manual P 156 64.1913 50 0.13 71
IV.CRMI.HHZ. 2023-02-11T08:33:18.07 0.3 undecidable manual P 331 61.9935 50 -0.14 71
IV.MALA4.EHE. 2023-02-11T08:33:18.72 0.3 undecidable manual S 164 34.9428 50 -0.51 69
IV.MALA5.EHE. 2023-02-11T08:33:18.67 0.6 undecidable manual S 164 34.8429 50 -0.52 45
IV.MALA2.EHE. 2023-02-11T08:33:18.75 0.3 undecidable manual S 164 35.1426 50 -0.54 68
IV.MALA0.EHE. 2023-02-11T08:33:18.75 0.6 undecidable manual S 164 34.8429 50 -0.45 46
IV.RUFI.EHZ. 2023-02-11T08:33:17.64 0.3 undecidable manual P 12 59.9955 50 -0.26 69
TV.SF11.HHZ. 2023-02-11T08:33:17.14 0.3 undecidable manual P 152 55.3002 50 -0.03 73
IV.CRE.HHZ. 2023-02-11T08:33:17.67 0.3 undecidable manual P 54 58.9965 50 -0.06 72
IV.ARCI.HHZ. 2023-02-11T08:33:16.65 0.3 undecidable manual P 169 51.5151 50 0.06 73
IV.TRIF.CHZ. 2023-02-11T08:33:15.23 0.6 undecidable manual P 240 42.624 50 0.02 50
IV.OSSC.HHZ. 2023-02-11T08:33:15.54 0.3 undecidable manual S 339 25.5522 109 -0.77 63
IV.CAFI.HHZ. 2023-02-11T08:33:15.99 0.3 undecidable manual P 87 49.2174 50 -0.24 71
IV.FROS.CHZ. 2023-02-11T08:33:14.71 0.3 undecidable manual S 236 19.5693 114 0.32 74
IV.CSNT.HHZ. 2023-02-11T08:33:13.53 0.3 undecidable manual S 343 19.0698 115 -0.7 65
IV.MALA0.EHE. 2023-02-11T08:33:13.94 0.3 undecidable manual P 164 34.8429 50 -0.08 75
IV.MALA1.EHE. 2023-02-11T08:33:13.91 0.3 undecidable manual P 164 35.1426 50 -0.15 74
IV.MALA4.EHE. 2023-02-11T08:33:13.86 0.1 undecidable manual P 164 34.9428 50 -0.17 98
IV.MALA5.EHE. 2023-02-11T08:33:13.88 0.3 undecidable manual P 164 34.8429 50 -0.13 74
IV.MALA2.EHE. 2023-02-11T08:33:13.98 0.1 undecidable manual P 164 35.1426 50 -0.09 100
IV.OSSC.HHZ. 2023-02-11T08:33:11.92 0.1 undecidable manual P 339 25.5522 109 -0.43 95
IV.FROS.CHZ. 2023-02-11T08:33:11.57 0.1 undecidable manual P 236 19.5693 114 0.33 98
IV.CSNT.HHZ. 2023-02-11T08:33:10.75 0.1 undecidable manual P 343 19.0698 115 -0.4 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHE. ML:3.3 0.01455 0.26 AML other m 2023-02-11T08:33:13.77
IV.CSNT.HHN. ML:3.2 0.01325 0.68 AML other m 2023-02-11T08:33:13.62
IV.FROS.CHE. ML:2.8 0.004459742 0.1536 AML other m 2023-02-11T08:33:14.97
IV.FROS.CHN. ML:2.9 0.00617 0.14 AML other m 2023-02-11T08:33:15.54
IV.OSSC.HHE. ML:3.0 0.005915 0.12 AML other m 2023-02-11T08:33:15.89
IV.OSSC.HHN. ML:3.0 0.005634999999999999 0.18 AML other m 2023-02-11T08:33:16.16
IV.TRIF.CHN. ML:2.6 0.001265 1.86 AML other m 2023-02-11T08:33:22.01
IV.CAFI.HHE. ML:2.4 0.0007415529000000001 0.64 AML other m 2023-02-11T08:33:22.76
IV.TRIF.CHE. ML:2.5 0.0010525 0.86 AML other m 2023-02-11T08:33:23.05
IV.CAFI.HHN. ML:2.6 0.001004 0.38 AML other m 2023-02-11T08:33:23.23
IV.CAFI.HNN. ML:2.6 0.000985 0.38 AML other m 2023-02-11T08:33:23.24
IV.ARCI.HHN. ML:2.7 0.001415 0.44 AML other m 2023-02-11T08:33:25.08
IV.ARCI.HNN. ML:2.7 0.0013399999999999998 0.44 AML other m 2023-02-11T08:33:25.08
IV.CAFI.HNE. ML:2.5 0.0008359999999999999 0.36 AML other m 2023-02-11T08:33:25.58
IV.ARCI.HNE. ML:2.7 0.0012850000000000001 0.88 AML other m 2023-02-11T08:33:25.94
IV.ARCI.HHE. ML:2.7 0.001375 0.88 AML other m 2023-02-11T08:33:25.94
IV.RUFI.EHN. ML:2.4 0.000572 0.78 AML other m 2023-02-11T08:33:26.39
IV.CRE.HHE. ML:2.8 0.001355 0.46 AML other m 2023-02-11T08:33:26.29
IV.RUFI.EHE. ML:2.6 0.0007835000000000001 0.54 AML other m 2023-02-11T08:33:26.92
IV.CELB.HHE. ML:2.4 0.0001995 0.08 AML other m 2023-02-11T08:33:28.26
IV.BOSL.HHN. ML:2.4 0.000379 1.54 AML other m 2023-02-11T08:33:28.79
IV.BOSL.HHE. ML:2.6 0.000797 0.4 AML other m 2023-02-11T08:33:28.77
IV.CRMI.HHN. ML:2.3 0.00039449999999999994 0.52 AML other m 2023-02-11T08:33:29.69
IV.CRMI.HHE. ML:2.1 0.000241 0.48 AML other m 2023-02-11T08:33:29.48
IV.SSP9.EHE. ML:2.6 0.000723 0.52 AML other m 2023-02-11T08:33:29.51
IV.MCIV.CHE. ML:2.3 0.00041349999999999997 0.56 AML other m 2023-02-11T08:33:29.68
IV.CRE.HHN. ML:2.7 0.0011149999999999999 1.7 AML other m 2023-02-11T08:33:29.97
IV.MCIV.CHN. ML:2.2 0.0002655 1.24 AML other m 2023-02-11T08:33:30.68
IV.MPPT.EHE. ML:2.6 0.000583 1.52 AML other m 2023-02-11T08:33:31.03
IV.MPPT.EHN. ML:2.4 0.0003695 1.58 AML other m 2023-02-11T08:33:31.05
IV.CASP.HHN. ML:2.5 0.000546 0.64 AML other m 2023-02-11T08:33:31.53
IV.CASP.HHE. ML:2.5 0.000517 0.28 AML other m 2023-02-11T08:33:31.65
IV.CASP.HNN. ML:2.5 0.0005825 0.48 AML other m 2023-02-11T08:33:31.66
IV.CASP.HNE. ML:2.6 0.000648 0.84 AML other m 2023-02-11T08:33:31.67
IV.BADI.EHN. ML:2.4 0.000412 0.32 AML other m 2023-02-11T08:33:31.94
IV.PARC.HHE. ML:2.4 0.0003215 0.44 AML other m 2023-02-11T08:33:32.27
IV.SACS.HHN. ML:2.2 0.00031 0.88 AML other m 2023-02-11T08:33:32.50
IV.SSP9.EHN. ML:2.6 0.0007195 1.4 AML other m 2023-02-11T08:33:32.75
IV.SACS.HHE. ML:2.2 0.00028849999999999997 0.2 AML other m 2023-02-11T08:33:32.86
IV.BADI.EHE. ML:2.5 0.000512 0.96 AML other m 2023-02-11T08:33:33.23
IV.SEI.HHE. ML:2.9 0.0009755 0.26 AML other m 2023-02-11T08:33:33.67
IV.PII.HHE. ML:2.4 0.000366 0.22 AML other m 2023-02-11T08:33:33.68
IV.PARC.HHN. ML:2.4 0.00038500000000000003 0.94 AML other m 2023-02-11T08:33:34.21
IV.SFI.EHE. ML:2.4 0.00037 0.84 AML other m 2023-02-11T08:33:34.71
IV.PII.HHN. ML:2.6 0.0005114999999999999 0.3 AML other m 2023-02-11T08:33:35.07
IV.SEI.HHN. ML:3.1 0.001695 0.34 AML other m 2023-02-11T08:33:35.23
IV.ATMI.HHE. ML:3.1 0.0019249999999999998 1.28 AML other m 2023-02-11T08:33:35.98
IV.ATPI.EHN. ML:2.5 0.000388 0.86 AML other m 2023-02-11T08:33:36.46
IV.ATMI.HHN. ML:2.9 0.001215 1.56 AML other m 2023-02-11T08:33:36.00
IV.MGAB.HNN. ML:2.4 0.0004235 1.2 AML other m 2023-02-11T08:33:37.64
IV.SFI.EHN. ML:2.2 0.000209 0.6 AML other m 2023-02-11T08:33:37.30
IV.LMD.HHE. ML:2.3 0.000228 1.66 AML other m 2023-02-11T08:33:37.05
IV.MGAB.HHN. ML:2.4 0.0004265 1.06 AML other m 2023-02-11T08:33:38.82
GU.POPM.HHN. ML:2.4 0.000275 0.3 AML other m 2023-02-11T08:33:39.23
IV.ATPI.EHE. ML:2.4 0.000343 0.84 AML other m 2023-02-11T08:33:39.80
IV.LMD.HHN. ML:2.2 0.00020400000000000003 0.42 AML other m 2023-02-11T08:33:39.59
IV.MGAB.HHE. ML:2.3 0.000284 0.4 AML other m 2023-02-11T08:33:39.88
IV.MGAB.HNE. ML:2.2 0.000266 0.38 AML other m 2023-02-11T08:33:39.88
IV.FNVD.HHN. ML:2.6 0.0003845 0.58 AML other m 2023-02-11T08:33:39.98
IV.LATE.HHE. ML:2.0 0.00013330000000000001 0.62 AML other m 2023-02-11T08:33:40.60
IV.BDI.HHN. ML:2.1 0.0001295 0.96 AML other m 2023-02-11T08:33:41.87
GU.POPM.HHE. ML:2.3 0.0002035 0.78 AML other m 2023-02-11T08:33:42.00
IV.PIEI.HHN. ML:2.3 0.0001985 1.22 AML other m 2023-02-11T08:33:42.09
IV.MURB.HHN. ML:2.9 0.0009295 1.22 AML other m 2023-02-11T08:33:42.31
IV.MURB.HNN. ML:2.8 0.00078 1.22 AML other m 2023-02-11T08:33:42.32
IV.MURB.HHE. ML:2.9 0.000977 1.04 AML other m 2023-02-11T08:33:42.94
IV.MURB.HNE. ML:2.9 0.0009180000000000001 1 AML other m 2023-02-11T08:33:42.94
IV.ATFO.HHE. ML:2.5 0.00032250000000000003 0.6 AML other m 2023-02-11T08:33:42.46
IV.BDI.HHE. ML:2.3 0.00016849999999999998 0.7 AML other m 2023-02-11T08:33:42.56
IV.ATFO.HHN. ML:2.6 0.0003985 0.48 AML other m 2023-02-11T08:33:43.33
IV.FNVD.HHE. ML:2.4 0.00027749999999999997 0.74 AML other m 2023-02-11T08:33:44.53
GU.MAIM.HHN. ML:2.0 0.000107 0.5 AML other m 2023-02-11T08:33:44.71
IV.CELB.HHN. ML:2.4 0.000226 0.44 AML other m 2023-02-11T08:33:44.48
IV.PIEI.HHE. ML:2.2 0.00017649999999999998 0.7 AML other m 2023-02-11T08:33:45.56
IV.SSFR.HHN. ML:2.4 0.0001835 0.3 AML other m 2023-02-11T08:33:46.34
GU.MAIM.HHE. ML:1.9 0.00007795 1.24 AML other m 2023-02-11T08:33:47.76
IV.SSFR.HHE. ML:2.4 0.00020600000000000002 1.64 AML other m 2023-02-11T08:33:47.82
IV.MOMA.HHE. ML:2.2 0.0001285 1.28 AML other m 2023-02-11T08:33:48.16
IV.LATE.HHN. ML:2.1 0.000156 0.5 AML other m 2023-02-11T08:33:48.95
IV.MOMA.HHN. ML:2.2 0.00013450000000000002 1.2 AML other m 2023-02-11T08:33:48.31
IV.MML1.EHN. ML:2.2 0.00010439999999999999 0.28 AML other m 2023-02-11T08:33:51.28
GU.EQUI.HHN. ML:2.2 0.0000842 1.62 AML other m 2023-02-11T08:33:51.87
GU.EQUI.HHE. ML:2.1 0.00006759999999999999 0.9 AML other m 2023-02-11T08:33:51.92
IV.MML1.EHE. ML:2.1 0.0000858 1.1 AML other m 2023-02-11T08:33:54.95
IV.FDMO.HHE. ML:2.1 0.00006525 1.14 AML other m 2023-02-11T08:33:54.92
IV.FDMO.HHN. ML:2.0 0.00005295 0.76 AML other m 2023-02-11T08:33:59.80
IV.CSP1.EHE. ML:2.6 0.000194 1.46 AML other m 2023-02-11T08:34:00.83
IV.CSP1.EHN. ML:2.8 0.0003055 1.28 AML other m 2023-02-11T08:34:01.78
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