Earthquake with magnitude of ML 1.6 on date 11-07-2020 and time 11:40:41 (Italy) in region 3 km E Castelfiorentino (FI)

A magnitude ML 1.6 earthquake occured in region: 3 km E Castelfiorentino (FI), on

  • 11-07-2020 09:40:41 (UTC)
  • 11-07-2020 11:40:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.62, 11.01 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.

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 4 17504 17504
Montespertoli FI 6 13537 31041
Certaldo FI 8 16121 47162
Gambassi Terme FI 10 4870 52032
Montaione FI 11 3700 55732
Empoli FI 12 48109 103841
Montelupo Fiorentino FI 13 14098 117939
Capraia e Limite FI 14 7670 125609
Tavarnelle Val di Pesa FI 14 7800 133409
San Miniato PI 15 27934 161343
San Casciano in Val di Pesa FI 15 17062 178405
Barberino Val d'Elsa FI 15 4386 182791
San Gimignano SI 17 7820 190611
Lastra a Signa FI 19 20156 210767
Cerreto Guidi FI 19 10870 221637
Palaia PI 19 4612 226249
Signa FI 20 19179 245428
Poggibonsi SI 20 29196 274624

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)
36 Km S of Pistoia (90315 inhabitants)
42 Km NW of Siena (53903 inhabitants)
48 Km SE of Lucca (89046 inhabitants)
50 Km E of Pisa (89158 inhabitants)
57 Km E of Livorno (159219 inhabitants)
67 Km E of Viareggio (62467 inhabitants)
72 Km W of Arezzo (99543 inhabitants)
84 Km SE of Massa (69479 inhabitants)
89 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 1.6 2020-07-11
09:40:41
43.62 11.01 9 2020-11-19
12:37:05
Bollettino Sismico Italiano INGV 83959831
Reviewed
Rev100
ML 1.7 2020-07-11
09:40:41
43.62 11.01 8 2020-07-11
09:51:29
Sala Sismica INGV-Roma 80948641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-11 09:40:41 ± 0.1
Latitude 43.62 ± 0.00
Longitude 11.01 ± 0.01
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 83959831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 539
Semi-minor axis of confidence ellipse (meter) 276
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 5.88426
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 35
Type of magnitude ML
Reference to an origin 83959831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-20 16:20:10

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 80948641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-11 09:51:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MCI.EHZ. 2020-07-11T09:42:10.30 3.0 undecidable manual Sn 2.28 0
IV.SPS2.HHZ. 2020-07-11T09:42:10.08 3.0 negative manual P 5.8843 0.15 0
SI.BOSI.HHZ. 2020-07-11T09:42:07.79 3.0 undecidable manual Sg 3.21 0
IV.SALO.HHZ. 2020-07-11T09:41:41.91 3.0 undecidable manual Sn -1.72 0
IV.MF5.EHZ. 2020-07-11T09:41:41.05 3.0 undecidable manual Sn -0.57 0
GU.BLANC.HHZ. 2020-07-11T09:41:38.16 3.0 undecidable manual P 3.6512 -0.93 0
GU.GBOS.HHZ. 2020-07-11T09:41:30.22 3.0 undecidable manual P 2.367 8.88 0
IV.CIMA.HNZ. 2020-07-11T09:41:17.84 3.0 undecidable manual P 1.9524 2.21 0
IV.TEOL.HHZ. 2020-07-11T09:41:13.79 3.0 undecidable manual P 1.8049 0.21 0
IV.PARC.HHZ. 2020-07-11T09:41:11.79 3.0 undecidable manual S -3.27 0
IV.MNTV.HNZ. 2020-07-11T09:41:09.78 3.0 positive manual P 1.5387 0.09 0
IV.CRTC.HHZ. 2020-07-11T09:41:09.49 3.0 negative manual P 1.3598 2.85 0
IV.ARVD.HHZ. 2020-07-11T09:41:07.36 3.0 negative manual P 1.402 0 0
IV.NARO.HHZ. 2020-07-11T09:41:06.74 3.0 undecidable manual P 1.1349 3.95 0
IV.ATVO.HHZ. 2020-07-11T09:41:02.20 3.0 undecidable manual P 1.0378 1.07 0
IV.ATMI.HHZ. 2020-07-11T09:41:01.52 3.0 undecidable manual P 0.9542 1.83 0
IV.ATVA.EHE. 2020-07-11T09:41:00.65 3.0 undecidable manual P 0.9839 0.44 0
IV.BADI.EHE. 2020-07-11T09:40:59.22 3.0 undecidable manual P 0.8984 0.47 0
IV.RINC.HHZ. 2020-07-11T09:40:59.50 0.3 undecidable manual S 58 0.5063 50 -0.13 70
GU.POPM.HHZ. 2020-07-11T09:40:58.00 0.3 undecidable manual S 337 0.4641 50 -0.4 67
IV.FROS.CHZ. 2020-07-11T09:40:56.50 0.3 undecidable manual S 166 0.4218 50 -0.63 63
IV.RUFI.EHZ. 2020-07-11T09:40:56.60 0.1 undecidable manual S 58 0.4209 50 -0.5 88
IV.CRE.HHZ. 2020-07-11T09:40:55.49 0.6 undecidable manual P 90 0.6799 50 0.49 42
IV.RIBO.EHZ.01 2020-07-11T09:40:55.01 0.6 undecidable manual P 178 0.6691 50 0.18 45
IV.LMD.HHZ. 2020-07-11T09:40:55.45 0.3 undecidable manual P 47 0.679 50 0.45 63
IV.VISG.HHZ. 2020-07-11T09:40:54.77 1.0 undecidable manual P 28 0.6457 50 0.34 22
IV.ASQU.HHZ. 2020-07-11T09:40:53.96 0.3 undecidable manual P 72 0.5891 50 0.51 63
IV.RINC.HHZ. 2020-07-11T09:40:52.18 0.3 undecidable manual P 58 0.5063 50 0.15 70
IV.BDI.HHZ. 2020-07-11T09:40:52.60 0.3 undecidable manual P 326 0.536 50 0.05 71
IV.SEI.HHZ. 2020-07-11T09:40:52.39 0.1 undecidable manual P 30 0.5018 50 0.43 88
IV.TRIF.CHZ. 2020-07-11T09:40:52.28 0.1 undecidable manual P 189 0.5099 50 0.19 92
GU.POPM.HHZ. 2020-07-11T09:40:51.56 0.1 undecidable manual P 337 0.4641 50 0.24 92
IV.CSNT.HHZ. 2020-07-11T09:40:51.40 0.3 undecidable manual S 126 0.2482 108 -0.28 71
IV.RONT.HHZ. 2020-07-11T09:40:51.85 1.0 undecidable manual P 39 0.482 50 0.22 23
GU.MAIM.HHZ. 2020-07-11T09:40:51.45 0.1 undecidable manual P 308 0.4784 50 -0.11 94
IV.FROS.CHZ. 2020-07-11T09:40:50.70 0.1 undecidable manual P 166 0.4218 50 0.11 95
IV.RUFI.EHZ. 2020-07-11T09:40:50.61 0.1 undecidable manual P 58 0.4209 50 0.04 97
IV.PII.HHZ. 2020-07-11T09:40:49.55 0.1 undecidable manual P 287 0.3669 50 -0.11 96
IV.MPPT.EHZ. 2020-07-11T09:40:49.02 0.1 undecidable manual P 9 0.3435 50 -0.23 94
IV.CELB.HHZ. 2020-07-11T09:40:48.90 3.0 undecidable manual P 0
IV.CRMI.HHZ. 2020-07-11T09:40:48.90 0.1 undecidable manual S 352 0.179 114 -0.28 96
IV.CSNT.HHZ. 2020-07-11T09:40:47.36 0.1 undecidable manual P 126 0.2482 108 -0.08 99
IV.CRMI.HHZ. 2020-07-11T09:40:46.10 0.1 undecidable manual P 352 0.179 114 0.1 100
IV.FNVD.HHZ. 2020-07-11T09:40:39.60 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHN. ML:0 0.00039284925 0.0576 AML other m 2020-07-11T09:40:49.63
IV.PII.HHE. ML:0 0.00025332755 0.0576 AML other m 2020-07-11T09:40:49.59
IV.CSNT.HHN. ML:0 0.00016731759 0.1792 AML other m 2020-07-11T09:40:52.19
IV.CSNT.HHE. ML:0 0.00011487089 0.2176 AML other m 2020-07-11T09:40:52.54
IV.MPPT.EHE. ML:0 7.383892E-5 0.2432 AML other m 2020-07-11T09:40:54.45
IV.MPPT.EHN. ML:0 7.928085E-5 0.2368 AML other m 2020-07-11T09:40:55.96
IV.FROS.CHE. ML:0 0.000470925 0.1536 AML other m 2020-07-11T09:40:57.02
IV.RUFI.EHE. ML:0 0.00016158925 0.2816 AML other m 2020-07-11T09:40:57.16
IV.FROS.CHN. ML:0 0.00029924585 0.128 AML other m 2020-07-11T09:40:57.83
IV.RUFI.EHN. ML:0 0.00014451497 0.2176 AML other m 2020-07-11T09:40:57.63
GU.POPM.HHE. ML:0 0.0001785311 0.2368 AML other m 2020-07-11T09:40:58.29
GU.POPM.HHN. ML:0 0.0001973123 0.16 AML other m 2020-07-11T09:40:59.04
IV.RINC.HHE. ML:0 0.00010504801 0.2048 AML other m 2020-07-11T09:40:59.91
IV.RONT.HHE. ML:0 0.00028935645 0.16 AML other m 2020-07-11T09:41:01.20
IV.RONT.HHN. ML:0 0.0004452221 0.16 AML other m 2020-07-11T09:41:01.33
IV.BDI.HHE. ML:0 0.0001046123 0.2624 AML other m 2020-07-11T09:41:03.34
IV.BDI.HHN. ML:0 9.2599665E-5 0.1792 AML other m 2020-07-11T09:41:03.39
IV.ASQU.HHE. ML:0 7.5949665E-5 0.1984 AML other m 2020-07-11T09:41:03.91
IV.ASQU.HHN. ML:0 9.43215E-5 0.2816 AML other m 2020-07-11T09:41:03.91
IV.RINC.HHN. ML:0 9.8815455E-5 0.3776 AML other m 2020-07-11T09:41:04.38
IV.VISG.HHN. ML:0 2.315725E-5 0.7232 AML other m 2020-07-11T09:41:04.79
IV.LMD.HHE. ML:0 3.863844E-5 0.32 AML other m 2020-07-11T09:41:09.27
IV.VISG.HHE. ML:0 2.193718E-5 0.3776 AML other m 2020-07-11T09:41:06.24
IV.LMD.HHN. ML:0 4.4957695E-5 0.256 AML other m 2020-07-11T09:41:06.90
IV.CRE.HHE. ML:0 4.816102E-5 0.3008 AML other m 2020-07-11T09:41:07.69
IV.CRE.HHN. ML:0 4.139235E-5 0.256 AML other m 2020-07-11T09:41:08.28
IV.ARVD.HHN. ML:1.3 1.2E-5 0.78 AML other m 2020-07-11T09:41:11.89
IV.ARVD.HHE. ML:1.5 1.56E-5 0.06 AML other m 2020-07-11T09:41:11.53
IV.ATVO.HHN. ML:1.1 1.1985E-5 0.42 AML other m 2020-07-11T09:41:17.21
IV.ATVO.HHE. ML:1.4 1.97E-5 0.44 AML other m 2020-07-11T09:41:21.71
IV.TEOL.HHE. ML:2.6 0.00010295 0.42 AML other m 2020-07-11T09:41:26.25
IV.TEOL.HHN. ML:2.6 0.0001193 1.16 AML other m 2020-07-11T09:41:26.21
IV.NARO.HHE. ML:1.2 9.96E-6 1.48 AML other m 2020-07-11T09:41:29.84
IV.NARO.HHN. ML:1.2 1.1785E-5 0.68 AML other m 2020-07-11T09:41:36.13
IV.SEI.HHN. ML:1.9 0.00016541085 0.3776 AML other m 2020-07-11T09:41:05.99
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download