Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 03-01-2024 and time 18:07:46 (UTC) in region 3 km NE Certaldo (FI)

A magnitude ML 2.1 earthquake occured in region: 3 km NE Certaldo (FI), on

  • 03-01-2024 18:07:46 (UTC)
  • 03-01-2024 19:07:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5710, 11.0590 at 10 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
Certaldo FI 3 16121 16121
Castelfiorentino FI 8 17504 33625
Montespertoli FI 8 13537 47162
Gambassi Terme FI 9 4870 52032
Tavarnelle Val di Pesa FI 9 7800 59832
Barberino Val d'Elsa FI 10 4386 64218
San Gimignano SI 12 7820 72038
Montaione FI 12 3700 75738
Poggibonsi SI 14 29196 104934
San Casciano in Val di Pesa FI 14 17062 121996
Colle di Val d'Elsa SI 17 21620 143616
Montelupo Fiorentino FI 18 14098 157714
Empoli FI 19 48109 205823

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SW of Scandicci (50609 inhabitants)
27 Km SW of Firenze (382808 inhabitants)
35 Km S of Prato (191150 inhabitants)
36 Km NW of Siena (53903 inhabitants)
42 Km S of Pistoia (90315 inhabitants)
54 Km SE of Lucca (89046 inhabitants)
55 Km E of Pisa (89158 inhabitants)
60 Km E of Livorno (159219 inhabitants)
68 Km W of Arezzo (99543 inhabitants)
73 Km E of Viareggio (62467 inhabitants)
90 Km SE of Massa (69479 inhabitants)
90 Km N of Grosseto (82087 inhabitants)
96 Km SE of Carrara (63133 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 2.1 2024-01-03
18:07:46		 43.5713 11.0587 10 2024-01-03
18:24:21		 Sala Sismica INGV-Roma 124457591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-03 18:07:46 ± 0.11
Latitude 43.5713 ± 0.0045
Longitude 11.0587 ± 0.0074
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124457591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 481
Semi-minor axis of confidence ellipse (meter) 433
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 230
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.95148
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 25
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 124457591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-03 18:24:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.DGI.HHZ. 2024-01-03T18:09:33.67 3.0 undecidable manual Sg 12.32 0
IV.PTCC.HHZ. 2024-01-03T18:09:24.06 3.0 undecidable manual Sg 6.7 0
GU.PZZ.HHZ. 2024-01-03T18:09:23.84 3.0 undecidable manual Sg 13.19 0
IV.GIUL.HHZ. 2024-01-03T18:09:11.29 3.0 undecidable manual Sg 10.52 0
MN.BLY.HHZ. 2024-01-03T18:09:00.05 3.0 positive manual Pn 4.68 0
IV.LRP.EHZ. 2024-01-03T18:08:33.12 3.0 undecidable manual Pn 3.58 0
RD.PGF.BHZ. 2024-01-03T18:08:17.74 3.0 undecidable manual Pn -0.02 0
IV.SACS.HHZ. 2024-01-03T18:08:05.22 0.6 undecidable manual P 139 105.6165 50 0.69 36
IV.ATMI.HHZ. 2024-01-03T18:08:04.46 1.0 undecidable manual P 105 100.8213 50 0.66 19
IV.PARC.HHZ. 2024-01-03T18:08:04.27 3.0 undecidable manual P 0
GU.EQUI.HHZ. 2024-01-03T18:08:04.01 0.3 undecidable manual P 313 97.9242 50 0.65 56
IV.CASP.HHZ. 2024-01-03T18:08:03.19 3.0 undecidable manual P 0
IV.MOCL.EHZ. 2024-01-03T18:08:02.33 1.0 undecidable manual S 11 49.1175 50 -0.22 23
IV.ARCI.HHZ. 2024-01-03T18:08:02.17 0.1 undecidable manual P 157 86.6466 50 0.56 79
IV.TRIF.CHZ. 2024-01-03T18:08:02.95 0.6 undecidable manual S 194 52.2033 50 -0.42 44
IV.PSL.EHE. 2024-01-03T18:08:02.35 0.6 undecidable manual S 348 49.617 50 -0.34 45
IV.BOSL.HHZ. 2024-01-03T18:08:01.95 0.3 undecidable manual S 32 47.2194 50 -0.1 71
IV.RUFI.EHZ. 2024-01-03T18:08:01.28 0.3 undecidable manual S 51 46.7199 50 -0.63 62
MN.VLC.HHZ. 2024-01-03T18:08:01.72 0.3 undecidable manual P 321 84.5487 50 0.43 62
IV.SFI.EHZ. 2024-01-03T18:08:00.32 3.0 negative manual P 0.36 0
IV.LMD.HHZ. 2024-01-03T18:08:00.71 0.6 undecidable manual P 43 76.4679 50 0.67 39
IV.CRE.HHZ. 2024-01-03T18:08:00.07 0.3 undecidable manual P 85 71.9724 50 0.73 57
IV.PII.HHZ. 2024-01-03T18:08:00.84 0.1 undecidable manual S 291 46.0206 50 -0.88 75
IV.CAFI.HHZ. 2024-01-03T18:08:00.34 0.1 negative manual P 110 77.8665 50 0.08 90
IV.FROS.CHZ. 2024-01-03T18:07:59.46 0.6 undecidable manual S 169 40.8258 50 -0.89 38
IV.BDI.HHZ. 2024-01-03T18:07:58.69 0.3 undecidable manual P 326 65.8896 50 0.27 66
GU.CARD.HHZ. 2024-01-03T18:07:58.93 0.3 undecidable manual P 318 68.376 50 0.13 68
GU.POPM.HHZ. 2024-01-03T18:07:57.51 0.6 undecidable manual P 335 57.7977 50 0.34 44
IV.LOCA.HNZ. 2024-01-03T18:07:57.70 0.3 undecidable manual S 151 33.6441 50 -0.72 61
IT.FIE.HGN. 2024-01-03T18:07:57.91 0.3 undecidable manual S 36 32.2455 50 -0.15 72
GU.MAIM.HHZ. 2024-01-03T18:07:57.57 0.1 negative manual P 310 59.1963 50 0.19 91
IV.SEI.HHZ. 2024-01-03T18:07:57.56 0.6 undecidable manual P 24 58.6968 50 0.25 45
IV.TRIF.CHZ. 2024-01-03T18:07:56.48 0.1 positive manual P 194 52.2033 50 0.18 92
IV.MOCL.EHZ. 2024-01-03T18:07:56.00 0.6 undecidable manual P 11 49.1175 50 0.18 47
IV.PII.HHZ. 2024-01-03T18:07:55.43 0.1 undecidable manual P 291 46.0206 50 0.08 95
IV.PSL.EHE. 2024-01-03T18:07:55.96 0.3 undecidable manual P 348 49.617 50 0.05 72
IV.CRMI.HHZ. 2024-01-03T18:07:55.37 0.3 undecidable manual S 346 25.6521 110 -0.78 61
IV.RUFI.EHZ. 2024-01-03T18:07:55.50 0.1 undecidable manual P 51 46.7199 50 0.04 96
IV.BOSL.HHZ. 2024-01-03T18:07:55.63 0.6 negative manual P 32 47.2194 50 0.09 48
IV.FROS.CHZ. 2024-01-03T18:07:54.58 0.1 undecidable manual P 169 40.8258 50 0.02 98
IV.CSNT.HHZ. 2024-01-03T18:07:54.39 0.6 undecidable manual S 120 21.5673 114 -0.44 46
IV.LOCA.HNZ. 2024-01-03T18:07:53.38 0.3 undecidable manual P 151 33.6441 50 -0.06 73
IT.FIE.HGN. 2024-01-03T18:07:53.26 0.3 undecidable manual P 36 32.2455 50 0.03 74
IV.CRMI.HHZ. 2024-01-03T18:07:52.01 0.3 undecidable manual P 346 25.6521 110 -0.12 74
IV.OSSC.HHZ. 2024-01-03T18:07:52.92 0.6 undecidable manual S 109 15.9729 121 -0.17 49
IV.CSNT.HHZ. 2024-01-03T18:07:51.21 0.1 undecidable manual P 120 21.5673 114 -0.16 98
IV.OSSC.HHZ. 2024-01-03T18:07:50.48 0.1 undecidable manual P 109 15.9729 121 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHN. ML:2.4 0.002565 0.9 AML other m 2024-01-03T18:07:53.51
IV.OSSC.HHE. ML:2.4 0.0023250000000000002 0.18 AML other m 2024-01-03T18:07:53.91
IV.CSNT.HHN. ML:2.2 0.0011840000000000002 1.66 AML other m 2024-01-03T18:07:54.93
IV.CSNT.HHE. ML:2.0 0.000742 1.18 AML other m 2024-01-03T18:07:55.85
IV.CRMI.HHN. ML:2.3 0.0011725 1.46 AML other m 2024-01-03T18:07:55.08
IV.CRMI.HNN. ML:2.3 0.0011125 1.46 AML other m 2024-01-03T18:07:55.09
IV.CRMI.HHE. ML:2.0 0.000628 0.3 AML other m 2024-01-03T18:07:55.89
IV.CRMI.HNE. ML:2.2 0.000897 0.3 AML other m 2024-01-03T18:07:55.90
IV.FROS.CHE. ML:2.4 0.000861 0.26 AML other m 2024-01-03T18:08:00.30
IV.FROS.CHN. ML:2.4 0.0009570000000000001 1.8 AML other m 2024-01-03T18:08:01.08
IV.RUFI.EHE. ML:1.8 0.00016749999999999998 0.38 AML other m 2024-01-03T18:08:01.80
IV.RUFI.EHN. ML:1.9 0.00022449999999999998 0.64 AML other m 2024-01-03T18:08:01.77
IV.BOSL.HHE. ML:1.5 0.00009035 0.24 AML other m 2024-01-03T18:08:02.54
IV.PII.HHN. ML:2.3 0.0006355 0.82 AML other m 2024-01-03T18:08:02.93
IV.PII.HHE. ML:2.2 0.0005365 0.74 AML other m 2024-01-03T18:08:02.97
IV.BOSL.HHN. ML:1.5 0.0000967 0.3 AML other m 2024-01-03T18:08:03.31
IV.MOCL.EHE. ML:2.2 0.00038849999999999996 0.42 AML other m 2024-01-03T18:08:03.12
IV.TRIF.CHE. ML:2.1 0.000338 1.46 AML other m 2024-01-03T18:08:03.22
IV.MOCL.EHN. ML:2.2 0.000379 1.24 AML other m 2024-01-03T18:08:04.04
IV.TRIF.CHN. ML:2.2 0.00041049999999999995 0.74 AML other m 2024-01-03T18:08:04.62
IV.SEI.HHE. ML:2.1 0.00029499999999999996 0.22 AML other m 2024-01-03T18:08:07.39
IV.BDI.HHE. ML:2.0 0.0001985 0.4 AML other m 2024-01-03T18:08:09.65
IV.SEI.HHN. ML:2.4 0.0005254999999999999 0.36 AML other m 2024-01-03T18:08:09.71
IV.SFI.EHE. ML:2.1 0.0001795 1.18 AML other m 2024-01-03T18:08:09.85
IV.BDI.HHN. ML:2.2 0.0003205 0.9 AML other m 2024-01-03T18:08:10.29
GU.CARD.HHE. ML:2.2 0.00026649999999999997 0.5 AML other m 2024-01-03T18:08:10.43
IV.LMD.HHN. ML:1.9 0.00011350000000000001 0.58 AML other m 2024-01-03T18:08:10.53
GU.CARD.HHN. ML:2.2 0.00029400000000000004 0.3 AML other m 2024-01-03T18:08:10.98
IV.CRE.HHN. ML:2.1 0.0002105 1.74 AML other m 2024-01-03T18:08:10.92
IV.CRE.HHE. ML:2.0 0.000162 0.54 AML other m 2024-01-03T18:08:12.37
IV.SFI.EHN. ML:2.1 0.000191 0.52 AML other m 2024-01-03T18:08:12.25
IV.CAFI.HHN. ML:1.7 0.0000704 0.7 AML other m 2024-01-03T18:08:12.60
IV.CAFI.HHE. ML:1.7 0.00007735 1.1 AML other m 2024-01-03T18:08:12.06
IV.LMD.HHE. ML:1.9 0.00011804999999999998 0.56 AML other m 2024-01-03T18:08:13.70
GU.EQUI.HHE. ML:1.9 0.0000818 0.42 AML other m 2024-01-03T18:08:18.27
GU.EQUI.HHN. ML:2.0 0.0000998 1 AML other m 2024-01-03T18:08:18.80
IV.ATMI.HHN. ML:2.2 0.0001585 0.28 AML other m 2024-01-03T18:08:21.52
IV.ATMI.HHE. ML:2.3 0.0001855 0.36 AML other m 2024-01-03T18:08:21.67
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