Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 08-02-2023 and time 23:25:44 (Italy) in region 1 km SW Siena (SI)

A magnitude ML 2.2 earthquake occured in region: 1 km SW Siena (SI), on

  • 08-02-2023 22:25:44 (UTC)
  • 08-02-2023 23:25:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3140, 11.3210 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 1 53903 53903
Sovicille SI 8 10116 64019
Monteriggioni SI 12 9810 73829
Monteroni d'Arbia SI 12 9088 82917
Castelnuovo Berardenga SI 15 9097 92014
Murlo SI 17 2389 94403
Castellina in Chianti SI 18 2859 97262
Gaiole in Chianti SI 20 2758 100020
Radda in Chianti SI 20 1613 101633

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km SW 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)
66 Km S of Prato (191150 inhabitants)
76 Km SE of Pistoia (90315 inhabitants)
86 Km E of Livorno (159219 inhabitants)
87 Km SE of Pisa (89158 inhabitants)
89 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 2023-02-08
22:25:44		 43.3137 11.3213 9 2024-03-01
17:18:15		 Bollettino Sismico Italiano INGV 120583411
Reviewed
Rev100 		ML 2.2 2023-02-08
22:25:44		 43.3243 11.3127 8 2023-02-08
22:38:09		 Sala Sismica INGV-Roma 114273701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-08 22:25:44 ± 0.11
Latitude 43.3137 ± 0.0045
Longitude 11.3213 ± 0.0087
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 120583411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 535
Semi-minor axis of confidence ellipse (meter) 486
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 279
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) 69
Number of associated phases, regardless of their use for origin computation 63
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.17901
Number of stations at which the event was observed 49
Number of stations from which data was used for origin computation 38
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 63
Type of magnitude ML
Reference to an origin 114273701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-08 22:38:09

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 63
Type of magnitude ML
Reference to an origin 120583411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-29 10:33:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGR.HHZ. 2023-02-08T22:27:43.53 3.0 undecidable manual Sn -1.21 0
IV.CAFE.HHZ. 2023-02-08T22:27:31.13 3.0 undecidable manual Sn 5.58 0
IV.AIO.HHZ. 2023-02-08T22:27:26.95 3.0 undecidable manual Pg 12.72 0
IV.SPS2.HHZ. 2023-02-08T22:27:24.29 3.0 undecidable manual Pg 18.209999 0
MN.TRI.HHZ. 2023-02-08T22:27:15.44 3.0 undecidable manual Sg 8.2 0
IV.SALB.HHZ. 2023-02-08T22:26:59.73 3.0 negative manual Pn -0.59 0
OX.MARN.HHZ. 2023-02-08T22:26:57.61 3.0 undecidable manual Sg 6.06 0
IV.CDRU.HHZ. 2023-02-08T22:26:54.32 3.0 undecidable manual Pg 7.72 0
IV.PAOL.HHZ. 2023-02-08T22:26:46.09 3.0 undecidable manual Pg 10.19 0
IV.TREM.HHZ. 2023-02-08T22:26:40.35 3.0 positive manual Pn 4.65 0
GU.CANO.HHZ. 2023-02-08T22:26:33.45 3.0 undecidable manual Pg 10.25 0
IV.MOCL.EHZ. 2023-02-08T22:26:07.60 0.6 undecidable manual S 352 77.4669 50 -0.18 46
IV.SNTG.HHZ. 2023-02-08T22:26:06.60 1.0 undecidable manual P 92 130.869 50 0.6 18
IV.BOSL.HHZ. 2023-02-08T22:26:04.93 0.6 undecidable manual S 4 68.5758 50 -0.47 44
IV.CELB.HHZ. 2023-02-08T22:26:04.04 0.3 undecidable manual P 235 109.8123 50 1.28 42
IV.CRE.HHZ. 2023-02-08T22:26:03.71 0.6 undecidable manual S 56 60.9945 50 0.34 46
Y1.T1756.HNZ. 2023-02-08T22:26:03.16 0.3 undecidable manual P 37 103.8183 50 1.33 42
IV.CRMI.HNN. 2023-02-08T22:26:02.47 0.6 undecidable manual S 333 60.0954 50 -0.67 41
IV.RUFI.EHZ. 2023-02-08T22:26:02.31 0.3 undecidable manual S 15 60.0954 50 -0.82 58
GU.CARD.HHZ. 2023-02-08T22:26:02.12 0.3 undecidable manual P 320 103.8183 50 0.29 64
IV.BDI.HNZ. 2023-02-08T22:26:01.90 0.3 undecidable manual P 325 101.4207 50 0.43 62
IV.PIEI.HHZ. 2023-02-08T22:26:01.70 0.6 undecidable manual P 75 100.8213 50 0.34 42
TV.SF11.HHZ. 2023-02-08T22:26:01.15 0.6 undecidable manual S 149 57.1983 50 -1.22 32
GU.MAIM.HHZ. 2023-02-08T22:26:00.09 0.6 undecidable manual P 315 94.1391 50 -0.24 44
IV.ARCI.HHZ. 2023-02-08T22:26:00.28 0.6 undecidable manual S 166 52.7028 50 -0.88 38
GU.POPM.HHZ. 2023-02-08T22:26:00.81 0.6 undecidable manual P 331 92.9403 50 0.67 39
IV.ATVO.HHZ. 2023-02-08T22:25:59.68 0.6 undecidable manual P 85 87.8454 50 0.31 44
IV.CAFI.HHZ. 2023-02-08T22:25:59.87 0.6 undecidable manual S 88 52.1034 50 -1.12 34
IV.LMD.HHZ. 2023-02-08T22:25:59.93 0.3 undecidable manual P 20 90.243 50 0.2 67
IV.SEI.HHZ. 2023-02-08T22:25:59.35 1.0 undecidable manual P 2 82.251 50 0.85 18
IV.BADI.EHE. 2023-02-08T22:25:58.34 0.3 undecidable manual P 73 77.4669 50 0.57 62
IV.PARC.HHZ. 2023-02-08T22:25:58.86 0.3 undecidable manual P 63 82.6506 50 0.29 66
IV.SFI.EHZ. 2023-02-08T22:25:58.21 0.3 undecidable manual P 33 77.9664 50 0.36 66
IV.MOCL.EHZ. 2023-02-08T22:25:58.51 0.3 undecidable manual P 352 77.4669 50 0.74 58
IV.MGAB.HHZ. 2023-02-08T22:25:57.83 0.3 undecidable manual P 125 77.9664 50 -0.01 71
IV.VMGN.HHN. 2023-02-08T22:25:57.46 0.3 undecidable manual P 13 73.0713 50 0.37 67
IV.SSP9.EHZ. 2023-02-08T22:25:57.13 0.3 undecidable manual P 66 71.373 50 0.31 68
IV.ATMC.EHE. 2023-02-08T22:25:57.00 0.3 undecidable manual P 78 71.7726 50 0.11 71
IV.ATMI.HHZ. 2023-02-08T22:25:57.95 0.6 undecidable manual P 88 76.4679 50 0.35 44
IV.PII.HHZ. 2023-02-08T22:25:57.82 0.3 undecidable manual P 306 78.4659 50 -0.1 70
IV.CASP.HHZ. 2023-02-08T22:25:57.03 0.3 undecidable manual P 213 68.7756 50 0.61 63
IV.TRIF.CHZ. 2023-02-08T22:25:57.41 0.3 undecidable manual S 237 40.4262 50 -0.47 69
IV.MPPT.EHZ. 2023-02-08T22:25:57.58 0.3 undecidable manual P 346 73.7706 50 0.38 66
IV.SACS.HHZ. 2023-02-08T22:25:56.83 0.3 undecidable manual P 137 70.1742 50 0.18 70
IV.BOSL.HHZ. 2023-02-08T22:25:56.28 0.3 undecidable manual P 4 68.5758 50 -0.12 71
IV.MCIV.CHZ. 2023-02-08T22:25:56.06 0.3 undecidable manual P 154 65.9895 50 0.07 72
IV.CRE.HHZ. 2023-02-08T22:25:55.48 0.3 undecidable manual P 56 60.9945 50 0.25 70
IV.CRMI.HNN. 2023-02-08T22:25:55.09 0.3 undecidable manual P 333 60.0954 50 0 74
IV.MALA4.EHZ. 2023-02-08T22:25:55.78 0.6 undecidable manual S 160 36.4413 50 -1.03 37
IV.MALA0.EHN. 2023-02-08T22:25:55.79 0.6 undecidable manual S 160 36.3414 50 -0.99 38
IV.RUFI.EHZ. 2023-02-08T22:25:54.96 0.3 undecidable manual P 15 60.0954 50 -0.13 72
TV.SF11.HHZ. 2023-02-08T22:25:54.72 0.1 undecidable manual P 149 57.1983 50 0.07 97
IV.CAFI.HHZ. 2023-02-08T22:25:53.76 0.3 undecidable manual P 88 52.1034 50 -0.09 73
IV.ARCI.HHZ. 2023-02-08T22:25:53.94 0.3 undecidable manual P 166 52.7028 50 -0.01 74
IV.OSSC.HHZ. 2023-02-08T22:25:52.24 0.3 undecidable manual S 345 24.0537 110 -0.74 64
IV.MALA0.EHN. 2023-02-08T22:25:51.11 0.3 undecidable manual P 160 36.3414 50 -0.31 72
IV.TRIF.CHZ. 2023-02-08T22:25:51.94 0.3 undecidable manual P 237 40.4262 50 -0.12 75
IV.FROS.CHZ. 2023-02-08T22:25:51.21 0.3 undecidable manual S 229 17.6712 116 0.29 75
IV.MALA4.EHZ. 2023-02-08T22:25:51.15 0.1 undecidable manual P 160 36.4413 50 -0.29 97
IV.CSNT.HHZ. 2023-02-08T22:25:50.22 0.3 undecidable manual S 352 17.871 116 -0.78 64
IV.OSSC.HHZ. 2023-02-08T22:25:48.80 0.1 undecidable manual P 345 24.0537 110 -0.43 96
IV.FROS.CHZ. 2023-02-08T22:25:48.32 0.1 undecidable manual P 229 17.6712 116 0.28 100
IV.CSNT.HHZ. 2023-02-08T22:25:47.74 0.1 undecidable manual P 352 17.871 116 -0.34 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHN. ML:2.6 0.0037949999999999998 0.14 AML other m 2023-02-08T22:25:50.46
IV.CSNT.HHE. ML:2.4 0.002216853 0.1408 AML other m 2023-02-08T22:25:50.77
IV.FROS.CHE. ML:2.8 0.005233039500000001 0.1792 AML other m 2023-02-08T22:25:51.30
IV.FROS.CHN. ML:2.8 0.0058 0.18 AML other m 2023-02-08T22:25:51.73
IV.OSSC.HHE. ML:2.8 0.004115000000000001 0.18 AML other m 2023-02-08T22:25:52.70
IV.OSSC.HHN. ML:2.6 0.0023049999999999998 0.2 AML other m 2023-02-08T22:25:52.99
IV.TRIF.CHE. ML:2.6 0.0014750000000000002 1.24 AML other m 2023-02-08T22:25:58.27
IV.TRIF.CHN. ML:2.4 0.0008142474 0.2048 AML other m 2023-02-08T22:25:59.40
IV.CAFI.HHE. ML:2.2 0.00041500000000000006 1.68 AML other m 2023-02-08T22:26:00.07
IV.CAFI.HNE. ML:2.2 0.00040604955 1.6928 AML other m 2023-02-08T22:26:00.92
IV.CAFI.HHN. ML:2.2 0.0004163175 0.32 AML other m 2023-02-08T22:26:01.56
IV.CAFI.HNN. ML:2.2 0.00040929044999999997 0.32 AML other m 2023-02-08T22:26:01.56
IV.ARCI.HHN. ML:2.3 0.00044750349999999993 0.32 AML other m 2023-02-08T22:26:03.29
IV.ARCI.HNN. ML:2.3 0.00044822324999999996 0.32 AML other m 2023-02-08T22:26:03.29
IV.RUFI.EHN. ML:2.2 0.00033899999999999995 0.34 AML other m 2023-02-08T22:26:03.53
IV.ARCI.HNE. ML:2.3 0.00047908755 0.3584 AML other m 2023-02-08T22:26:03.58
IV.ARCI.HHE. ML:2.3 0.00047386285 0.3584 AML other m 2023-02-08T22:26:03.59
IV.RUFI.EHE. ML:2.4 0.00047865924999999996 0.2304 AML other m 2023-02-08T22:26:03.33
IV.BOSL.HHE. ML:2.2 0.00030423945 0.2816 AML other m 2023-02-08T22:26:05.36
IV.BOSL.HHN. ML:2.1 0.00023015345000000002 0.2176 AML other m 2023-02-08T22:26:05.51
IV.MCIV.CHN. ML:1.9 0.00015 0.28 AML other m 2023-02-08T22:26:07.11
IV.MPPT.EHN. ML:2.2 0.00022199999999999998 0.34 AML other m 2023-02-08T22:26:07.33
IV.MPPT.EHE. ML:2.4 0.0003572997 0.4608 AML other m 2023-02-08T22:26:07.51
IV.MCIV.CHE. ML:2.0 0.00017549999999999998 0.4 AML other m 2023-02-08T22:26:08.31
IV.CRE.HHE. ML:2.2 0.00035456745 0.32 AML other m 2023-02-08T22:26:08.51
IV.CRE.HHN. ML:2.3 0.00038158815000000003 1.7184 AML other m 2023-02-08T22:26:09.90
IV.PII.HHE. ML:2.4 0.00032999999999999994 0.22 AML other m 2023-02-08T22:26:09.31
IV.SSP9.EHN. ML:2.2 0.00023313325 1.6416 AML other m 2023-02-08T22:26:10.91
IV.SACS.HNE. ML:2.0 0.00017566925 0.7424 AML other m 2023-02-08T22:26:10.52
IV.SFI.EHE. ML:2.2 0.00023449999999999998 0.6 AML other m 2023-02-08T22:26:10.99
IV.SEI.HHE. ML:2.5 0.0003905 0.28 AML other m 2023-02-08T22:26:11.33
IV.PII.HHN. ML:2.3 0.00026962685 0.3584 AML other m 2023-02-08T22:26:11.17
IV.SEI.HHN. ML:2.7 0.000739 0.56 AML other m 2023-02-08T22:26:11.18
IV.PARC.HHN. ML:2.2 0.00019506205 0.64 AML other m 2023-02-08T22:26:11.55
IV.PARC.HHE. ML:2.2 0.0002065 1.6 AML other m 2023-02-08T22:26:11.15
IV.MGAB.HHE. ML:2.0 0.00014761963000000001 0.2816 AML other m 2023-02-08T22:26:12.02
IV.MGAB.HNE. ML:2.1 0.00016303355 0.3072 AML other m 2023-02-08T22:26:12.01
IV.ATMI.HHN. ML:2.6 0.0005595 0.52 AML other m 2023-02-08T22:26:12.46
IV.MGAB.HNN. ML:2.2 0.0002028615 0.384 AML other m 2023-02-08T22:26:13.40
IV.MGAB.HHN. ML:2.1 0.0001848389 0.3968 AML other m 2023-02-08T22:26:13.02
IV.ATVO.HHE. ML:2.2 0.00020110640000000002 0.4608 AML other m 2023-02-08T22:26:13.54
IV.ATVO.HNE. ML:2.3 0.00023063165 0.4736 AML other m 2023-02-08T22:26:13.55
IV.SFI.HNE. ML:2.2 0.00025041955 0.6016 AML other m 2023-02-08T22:26:13.29
IV.SACS.HHN. ML:1.8 0.00009697793500000001 1.1424 AML other m 2023-02-08T22:26:13.07
IV.SACS.HNN. ML:2.0 0.00017986025 1.232 AML other m 2023-02-08T22:26:13.02
IV.LMD.HHE. ML:2.0 0.00011580162 0.3584 AML other m 2023-02-08T22:26:13.67
IV.SACS.HHE. ML:1.8 0.00011058404999999999 1.5648 AML other m 2023-02-08T22:26:14.21
GU.POPM.HHE. ML:2.1 0.00013109555000000002 0.2432 AML other m 2023-02-08T22:26:14.50
GU.POPM.HHN. ML:2.1 0.000134683 0.2048 AML other m 2023-02-08T22:26:14.86
IV.SFI.EHN. ML:1.9 0.000104398405 1.2832 AML other m 2023-02-08T22:26:14.90
IV.ATMI.HHE. ML:2.7 0.000769 0.32 AML other m 2023-02-08T22:26:15.55
IV.ATVO.HNN. ML:2.2 0.0002034067 1.488 AML other m 2023-02-08T22:26:16.03
GU.MAIM.HHN. ML:1.9 0.000084968415 1.6672 AML other m 2023-02-08T22:26:16.02
IV.LMD.HHN. ML:2.0 0.000113585995 1.424 AML other m 2023-02-08T22:26:16.92
IV.PIEI.HHE. ML:1.9 0.00007636648 1.2064 AML other m 2023-02-08T22:26:17.20
IV.SFI.HNN. ML:2.0 0.00016052555 0.6784 AML other m 2023-02-08T22:26:18.59
GU.MAIM.HHE. ML:2.1 0.00013608695000000002 0.9376 AML other m 2023-02-08T22:26:19.71
IV.ATVO.HHN. ML:2.2 0.00020247305 0.3712 AML other m 2023-02-08T22:26:19.87
IV.CELB.HHN. ML:2.1 0.00010117056 1.7824 AML other m 2023-02-08T22:26:19.06
IV.SSP9.EHE. ML:2.2 0.00024790875 1.296 AML other m 2023-02-08T22:26:20.01
IV.PIEI.HHN. ML:1.8 0.000061632785 1.0912 AML other m 2023-02-08T22:26:20.69
IV.CELB.HHE. ML:2.3 0.000162 0.44 AML other m 2023-02-08T22:26:20.62
IV.SNTG.HHN. ML:2.0 0.00006662743 0.3712 AML other m 2023-02-08T22:26:25.57
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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