Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 17-02-2017 and time 11:46:30 (Italy) in region 3 km NE Castelfiorentino (FI)

A magnitude ML 2.0 earthquake occured in region: 3 km NE Castelfiorentino (FI), on

  • 17-02-2017 10:46:30 (UTC)
  • 17-02-2017 11:46:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6240, 11.0000 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
Castelfiorentino FI 3 17504 17504
Montespertoli FI 7 13537 31041
Certaldo FI 9 16121 47162
Gambassi Terme FI 10 4870 52032
Montaione FI 11 3700 55732
Empoli FI 11 48109 103841
Montelupo Fiorentino FI 12 14098 117939
San Miniato PI 13 27934 145873
Capraia e Limite FI 13 7670 153543
San Casciano in Val di Pesa FI 15 17062 170605
Tavarnelle Val di Pesa FI 16 7800 178405
Barberino Val d'Elsa FI 17 4386 182791
San Gimignano SI 18 7820 190611
Cerreto Guidi FI 18 10870 201481
Palaia PI 18 4612 206093
Lastra a Signa FI 19 20156 226249
Vinci FI 19 14604 240853
Fucecchio FI 19 23618 264471
Signa FI 19 19179 283650
Montopoli in Val d'Arno PI 20 11148 294798

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Scandicci (50609 inhabitants)
26 Km SW of Firenze (382808 inhabitants)
30 Km S of Prato (191150 inhabitants)
35 Km S of Pistoia (90315 inhabitants)
43 Km NW of Siena (53903 inhabitants)
47 Km SE of Lucca (89046 inhabitants)
49 Km E of Pisa (89158 inhabitants)
56 Km E of Livorno (159219 inhabitants)
66 Km E of Viareggio (62467 inhabitants)
73 Km W of Arezzo (99543 inhabitants)
83 Km SE of Massa (69479 inhabitants)
88 Km SE of Carrara (63133 inhabitants)
96 Km N of Grosseto (82087 inhabitants)
99 Km SW of Imola (69797 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 2.0 2017-02-17
10:46:30		 43.6242 11 9 2018-01-10
09:51:18		 Bollettino Sismico Italiano INGV 50823421
Reviewed
Rev100 		ML 2.0 2017-02-17
10:46:30		 43.6302 10.9895 13 2017-02-17
10:56:22		 Sala Sismica INGV-Roma 41206961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-17 10:46:30 ± 0.08
Latitude 43.6242 ± 0.0027
Longitude 11.0000 ± 0.0037
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 50823421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 308
Semi-minor axis of confidence ellipse (meter) 206
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 222
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
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 82
Number of defining phases 56
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.27074
Number of stations at which the event was observed 56
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 50823421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-10-09 12:47:48

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 41206961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-17 10:56:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PALZ.HHZ. 2017-02-17T10:48:10.95 3.0 undecidable manual Sn -6.68 0
IV.SPS2.HHZ. 2017-02-17T10:48:02.92 3.0 negative manual Pg 15.56 0
IV.IVPL.HHZ. 2017-02-17T10:47:55.18 3.0 undecidable manual Pn 3.21 0
IV.ISTR.HHZ. 2017-02-17T10:47:51.47 3.0 undecidable manual Pn 3.86 0
IV.ILLI.HHZ. 2017-02-17T10:47:48.14 3.0 positive manual Pn -2.8 0
IV.VBKN.HHZ. 2017-02-17T10:47:36.12 3.0 positive manual Pg 17.27 0
IV.MRB1.HHZ. 2017-02-17T10:47:33.19 3.0 undecidable manual Pg 14.77 0
IV.VIVA.HHZ. 2017-02-17T10:47:25.07 3.0 undecidable manual Sn -5.98 0
SL.KOGS.BHZ. 2017-02-17T10:47:24.07 3.0 undecidable manual Pn 6.17 0
IV.SACR.HHZ. 2017-02-17T10:47:18.74 3.0 undecidable manual Pn 4.97 0
IV.BRMO.HHZ. 2017-02-17T10:47:12.70 3.0 undecidable manual Pg 13.19 0
IV.MONC.HHZ. 2017-02-17T10:47:12.29 3.0 positive manual Pg 6.71 0
GU.BHB.HHZ. 2017-02-17T10:47:10.69 3.0 undecidable manual Pn -0.53 0
GU.GRAM.HHZ. 2017-02-17T10:47:10.02 3.0 undecidable manual Sg 9.57 0
IV.SENI.HNZ. 2017-02-17T10:47:07.57 3.0 undecidable manual Sg 11.43 0
IV.MMO1.EHZ. 2017-02-17T10:47:05.57 3.0 undecidable manual Sn -4.6 0
IV.MCIV.HHZ. 2017-02-17T10:47:01.82 0.1 undecidable manual S 150 108.6135 50 -0.16 83
TV.SF04.EHZ. 2017-02-17T10:47:00.29 0.1 undecidable manual S 148 102.5196 50 -0.06 86
TV.SF01.EHZ. 2017-02-17T10:46:59.16 0.1 undecidable manual S 153 100.9212 50 -0.79 70
IV.PARC.HHZ. 2017-02-17T10:46:59.85 0.1 undecidable manual S 88 99.4227 50 0.3 82
IV.CASP.HHZ. 2017-02-17T10:46:58.01 0.1 undecidable manual S 187 93.1401 50 0.16 86
IV.GROG.HHN. 2017-02-17T10:46:57.29 0.1 undecidable manual S 257 91.7415 50 -0.21 85
MN.TRI.BHZ. 2017-02-17T10:46:57.66 3.0 undecidable manual Pn 4.53 0
IV.SSP9.EHZ. 2017-02-17T10:46:57.24 0.1 undecidable manual S 93 91.0422 50 -0.07 88
GU.EQUI.HHZ. 2017-02-17T10:46:57.33 0.3 undecidable manual S 312 90.5427 50 0.16 65
IV.CRE.HHZ. 2017-02-17T10:46:53.35 0.1 undecidable manual S 90 76.4679 50 -0.05 91
GU.SARM.EHZ. 2017-02-17T10:46:53.90 0.1 undecidable manual S 323 78.4659 50 -0.04 90
MN.VLC.HHZ. 2017-02-17T10:46:53.59 0.1 undecidable manual S 321 77.0673 50 0.03 91
IV.MSSA.HHZ. 2017-02-17T10:46:53.78 0.3 undecidable manual P 303 141.0477 50 0.28 57
IV.LMD.HHZ. 2017-02-17T10:46:53.45 0.1 undecidable manual S 48 75.6687 50 0.24 87
IV.CNCS.HNZ. 2017-02-17T10:46:52.06 3.0 positive manual Pn 1.83 0
IV.RMP.HHZ. 2017-02-17T10:46:52.71 3.0 negative manual Pn -6.91 0
IV.MMO1.EHZ. 2017-02-17T10:46:50.58 3.0 undecidable manual Pn 1.7 0
IV.ASQU.HHZ. 2017-02-17T10:46:50.24 0.1 undecidable manual S 73 66.0894 50 -0.41 86
IV.SBPO.HNZ. 2017-02-17T10:46:50.61 3.0 undecidable manual Sn -3.91 0
IV.ATVO.HHZ. 2017-02-17T10:46:50.50 0.1 undecidable manual P 103 116.2947 50 0.81 67
IV.SACS.HHZ. 2017-02-17T10:46:49.03 0.1 undecidable manual P 139 113.0979 50 -0.16 82
IV.MCIV.HHZ. 2017-02-17T10:46:49.15 0.1 undecidable manual P 150 108.6135 50 0.65 73
IV.ATPI.EHZ. 2017-02-17T10:46:49.30 0.3 undecidable manual P 99 114.3966 50 -0.09 62
IV.TRIF.HHZ. 2017-02-17T10:46:48.03 0.1 undecidable manual S 188 57.0984 50 -0.2 91
IV.BDI.HHZ. 2017-02-17T10:46:48.74 0.1 undecidable manual S 327 58.3971 50 0.14 92
TV.SF04.EHZ. 2017-02-17T10:46:48.21 0.1 positive manual P 148 102.5196 50 0.66 74
IV.VOBA.HNZ. 2017-02-17T10:46:48.46 3.0 undecidable manual Pn -0.49 0
IV.PARC.HHZ. 2017-02-17T10:46:47.14 0.3 undecidable manual P 88 99.4227 50 0.05 65
IV.SEI.HHZ. 2017-02-17T10:46:47.67 0.1 undecidable manual S 31 55.6998 50 -0.19 91
TV.SF01.EHZ. 2017-02-17T10:46:47.89 0.1 undecidable manual P 153 100.9212 50 0.57 76
GU.EQUI.HHZ. 2017-02-17T10:46:46.02 0.1 undecidable manual P 312 90.5427 50 0.31 84
IV.CASP.HHZ. 2017-02-17T10:46:46.83 0.1 undecidable manual P 187 93.1401 50 0.72 73
GU.MAIM.HHZ. 2017-02-17T10:46:46.87 0.1 undecidable manual S 308 51.9036 50 0.01 95
IV.GROG.HHN. 2017-02-17T10:46:45.44 0.3 undecidable manual P 257 91.7415 50 -0.47 60
IV.RUFI.EHZ. 2017-02-17T10:46:45.38 0.1 undecidable manual S 60 47.2194 50 -0.23 92
IV.LEOD.HNZ. 2017-02-17T10:46:45.13 3.0 undecidable manual Pn -4.23 0
IV.SSP9.EHZ. 2017-02-17T10:46:45.85 0.1 undecidable manual P 93 91.0422 50 0.06 88
IV.CAFI.HHZ. 2017-02-17T10:46:45.10 0.1 negative manual P 112 84.3489 50 0.34 84
IV.MOCL.EHZ. 2017-02-17T10:46:44.47 0.1 undecidable manual S 19 44.622 50 -0.45 88
IV.CRE.HHZ. 2017-02-17T10:46:44.08 0.1 undecidable manual P 90 76.4679 50 0.54 81
GU.SARM.EHZ. 2017-02-17T10:46:44.07 0.1 undecidable manual P 323 78.4659 50 0.22 87
IV.FROS.HHZ. 2017-02-17T10:46:44.96 0.1 undecidable manual S 165 47.7189 50 -0.76 78
MN.VLC.HHZ. 2017-02-17T10:46:44.00 0.1 positive manual P 321 77.0673 50 0.37 85
IV.CSP1.EHZ. 2017-02-17T10:46:43.91 3.0 undecidable manual Pn -2.16 0
IV.LMD.HHZ. 2017-02-17T10:46:43.75 0.1 negative manual P 48 75.6687 50 0.32 86
IV.PII.HHZ. 2017-02-17T10:46:42.75 0.1 undecidable manual S 286 39.627 50 -0.83 77
IV.ASQU.HHZ. 2017-02-17T10:46:42.30 0.1 undecidable manual P 73 66.0894 50 0.35 87
IV.SEI.HHZ. 2017-02-17T10:46:40.56 0.1 undecidable manual P 31 55.6998 50 0.22 91
IV.CSNT.HHZ. 2017-02-17T10:46:40.28 0.1 undecidable manual S 126 28.749 107 -0.22 95
IV.TRIF.HHZ. 2017-02-17T10:46:40.57 0.1 undecidable manual P 188 57.0984 50 0.02 94
IV.BDI.HHZ. 2017-02-17T10:46:40.82 0.1 undecidable manual P 327 58.3971 50 0.05 94
GU.MAIM.HHZ. 2017-02-17T10:46:39.77 0.1 negative manual P 308 51.9036 50 0.01 96
IV.NDIM.HHZ. 2017-02-17T10:46:39.01 3.0 negative manual Pn 0.42 0
IV.FIR.HNE. 2017-02-17T10:46:39.49 0.1 undecidable manual S 51 26.3514 109 -0.24 95
IV.FROS.HHZ. 2017-02-17T10:46:38.95 0.1 undecidable manual P 165 47.7189 50 -0.16 93
IV.OSSC.HNZ. 2017-02-17T10:46:38.48 0.1 undecidable manual S 119 22.6551 111 -0.05 100
IV.MOCL.EHZ. 2017-02-17T10:46:38.38 0.1 undecidable manual P 19 44.622 50 -0.26 92
IV.RUFI.EHZ. 2017-02-17T10:46:38.92 0.1 positive manual P 60 47.2194 50 -0.12 94
IV.CRMI.HHN. 2017-02-17T10:46:37.08 0.1 undecidable manual S 355 19.0698 115 -0.3 95
IV.MPPT.EHE. 2017-02-17T10:46:37.28 0.1 positive manual P 11 37.629 50 -0.29 93
IV.PII.HHZ. 2017-02-17T10:46:37.84 0.1 negative manual P 286 39.627 50 -0.03 97
IV.APEC.HHZ. 2017-02-17T10:46:37.50 3.0 negative manual P 1.14 0
IV.FIR.HNE. 2017-02-17T10:46:35.58 0.1 undecidable manual P 51 26.3514 109 -0.07 99
IV.CSNT.HHZ. 2017-02-17T10:46:35.71 0.1 negative manual P 126 28.749 107 -0.38 92
IV.CRMI.HHN. 2017-02-17T10:46:34.41 0.1 positive manual P 355 19.0698 115 0.12 99
IV.OSSC.HNZ. 2017-02-17T10:46:34.91 0.1 negative manual P 119 22.6551 111 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.9 0.0005825 0.24 AML other m 2017-02-17T10:46:38.69
IV.OSSC.HHN. ML:2.0 0.0007085 1.44 AML other m 2017-02-17T10:46:40.00
IV.OSSC.HNE. ML:2.0 0.0006730000000000001 1.42 AML other m 2017-02-17T10:46:40.01
IV.OSSC.HNN. ML:2.0 0.0006540000000000001 0.42 AML other m 2017-02-17T10:46:40.39
IV.CSNT.HHN. ML:2.0 0.00046550000000000004 0.6 AML other m 2017-02-17T10:46:40.41
IV.CSNT.HHE. ML:1.9 0.0003845 1 AML other m 2017-02-17T10:46:41.60
IV.MOCL.EHN. ML:2.0 0.000313 0.28 AML other m 2017-02-17T10:46:46.11
IV.RUFI.EHE. ML:2.0 0.00029600000000000004 0.78 AML other m 2017-02-17T10:46:46.19
IV.MOCL.EHE. ML:2.0 0.000305 0.2 AML other m 2017-02-17T10:46:46.60
GU.MAIM.HHE. ML:1.7 0.00011949999999999999 0.5 AML other m 2017-02-17T10:46:46.29
IV.RUFI.EHN. ML:1.8 0.00019800000000000002 0.38 AML other m 2017-02-17T10:46:46.76
GU.EQUI.HHE. ML:1.8 0.00006465 0.44 AML other m 2017-02-17T10:46:47.60
GU.MAIM.HHN. ML:1.8 0.0001725 1.82 AML other m 2017-02-17T10:46:47.91
TV.SF04.EHE. ML:2.2 0.00014549999999999999 0.22 AML other m 2017-02-17T10:46:48.73
IV.TRIF.HHE. ML:2.3 0.00040249999999999997 0.52 AML other m 2017-02-17T10:46:48.67
IV.TRIF.HHN. ML:2.2 0.0003775 0.62 AML other m 2017-02-17T10:46:49.43
IV.SEI.HHN. ML:2.3 0.000428 0.84 AML other m 2017-02-17T10:46:50.52
IV.SEI.HHE. ML:2.0 0.00023299999999999997 0.38 AML other m 2017-02-17T10:46:51.80
IV.ASQU.HHE. ML:2.1 0.000224 0.2 AML other m 2017-02-17T10:46:52.18
IV.ASQU.HHN. ML:2.1 0.00022700000000000002 0.64 AML other m 2017-02-17T10:46:52.51
IV.CRE.HHE. ML:1.8 0.00009215 0.42 AML other m 2017-02-17T10:46:55.11
IV.CRE.HHN. ML:1.8 0.0000902 0.24 AML other m 2017-02-17T10:46:59.13
IV.CASP.HHE. ML:2.1 0.00013350000000000002 0.48 AML other m 2017-02-17T10:47:00.65
GU.EQUI.HHN. ML:1.9 0.00009575 0.94 AML other m 2017-02-17T10:47:01.48
IV.CASP.HHN. ML:1.9 0.00008740000000000001 0.48 AML other m 2017-02-17T10:47:01.61
IV.PARC.HHN. ML:1.8 0.00005805 0.9 AML other m 2017-02-17T10:47:03.07
IV.PARC.HHE. ML:1.6 0.00003795 0.98 AML other m 2017-02-17T10:47:03.79
TV.SF04.EHN. ML:2.2 0.00014500000000000003 0.22 AML other m 2017-02-17T10:47:05.34
IV.APEC.HHN. ML:2.0 0.00007630000000000001 0.26 AML other m 2017-02-17T10:47:07.61
IV.APEC.HHE. ML:2.1 0.00011070000000000001 0.9 AML other m 2017-02-17T10:47:07.84
IV.ATVO.HHE. ML:1.8 0.00004545 1.64 AML other m 2017-02-17T10:47:09.13
IV.ATVO.HHN. ML:1.6 0.0000287 1.54 AML other m 2017-02-17T10:47:10.11
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