Earthquake with magnitude of ML 1.4 on date 05-12-2020 and time 19:08:22 (Italy) in region 1 km SE Castelfiorentino (FI)

A magnitude ML 1.4 earthquake occured in region: 1 km SE Castelfiorentino (FI), on

  • 05-12-2020 18:08:22 (UTC)
  • 05-12-2020 19:08:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6, 10.99 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.

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 1 17504 17504
Certaldo FI 7 16121 33625
Gambassi Terme FI 7 4870 38495
Montaione FI 8 3700 42195
Montespertoli FI 9 13537 55732
Empoli FI 14 48109 103841
San Miniato PI 14 27934 131775
Montelupo Fiorentino FI 15 14098 145873
San Gimignano SI 15 7820 153693
Tavarnelle Val di Pesa FI 16 7800 161493
Capraia e Limite FI 16 7670 169163
Barberino Val d'Elsa FI 16 4386 173549
San Casciano in Val di Pesa FI 17 17062 190611
Palaia PI 17 4612 195223
Poggibonsi SI 20 29196 224419
Montopoli in Val d'Arno PI 20 11148 235567
Cerreto Guidi FI 20 10870 246437

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SW of Scandicci (50609 inhabitants)
29 Km SW of Firenze (382808 inhabitants)
33 Km S of Prato (191150 inhabitants)
38 Km S of Pistoia (90315 inhabitants)
42 Km NW of Siena (53903 inhabitants)
48 Km SE of Lucca (89046 inhabitants)
49 Km E of Pisa (89158 inhabitants)
55 Km E of Livorno (159219 inhabitants)
66 Km E of Viareggio (62467 inhabitants)
74 Km W of Arezzo (99543 inhabitants)
83 Km SE of Massa (69479 inhabitants)
89 Km SE of Carrara (63133 inhabitants)
94 Km N of Grosseto (82087 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2020-12-05
18:08:22
43.6 10.99 10 2020-12-05
18:22:25
Sala Sismica INGV-Roma 85221771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-05 18:08:22 ± 0.18
Latitude 43.60 ± 0.01
Longitude 10.99 ± 0.01
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 85221771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 797
Semi-minor axis of confidence ellipse (meter) 472
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 800
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 16
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
Epicentral distance of station farthest from the epicenter (degree) 0.70507
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 85221771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-05 18:22:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTRJ.HNZ. 2020-12-05T18:10:02.68 3.0 undecidable manual Sn 7.05 0
IV.ARCI.HHZ. 2020-12-05T18:09:05.93 3.0 undecidable manual S 0
IV.FIR.HHZ. 2020-12-05T18:09:05.91 3.0 undecidable manual P 0
IV.MILN.HNZ. 2020-12-05T18:09:03.90 3.0 undecidable manual Pg 5.22 0
IV.ARCI.HHZ. 2020-12-05T18:09:00.83 3.0 undecidable manual P 0
IV.MC2.EHZ. 2020-12-05T18:08:57.60 3.0 undecidable manual Pg 6.21 0
IV.SF01.EHZ. 2020-12-05T18:08:54.20 3.0 undecidable manual S 0
IV.SF01.EHZ. 2020-12-05T18:08:49.22 3.0 undecidable manual P 0
IV.LMD.HHZ. 2020-12-05T18:08:45.92 0.6 undecidable manual S 47 0.7051 50 0 45
IV.CPGN.HNZ. 2020-12-05T18:08:40.65 3.0 undecidable manual P -0.18 0
TV.SF04.EHZ. 2020-12-05T18:08:40.24 3.0 undecidable manual P 0.2 0
IV.MOCL.EHE. 2020-12-05T18:08:38.13 0.6 undecidable manual S 19 0.4281 50 0.41 44
IV.RUFI.EHZ. 2020-12-05T18:08:37.73 0.3 undecidable manual S 58 0.4461 50 -0.52 64
IV.FROS.CHZ. 2020-12-05T18:08:36.80 0.6 undecidable manual S 162 0.4083 50 -0.34 45
IV.LMD.HHZ. 2020-12-05T18:08:36.47 0.1 undecidable manual P 47 0.7051 50 0.51 81
IV.MPPT.EHE. 2020-12-05T18:08:35.73 0.6 undecidable manual S 12 0.3651 50 -0.12 48
IV.PII.HHZ. 2020-12-05T18:08:34.98 0.3 undecidable manual S 290 0.3561 50 -0.59 64
IV.RIBO.EHZ.01 2020-12-05T18:08:34.45 3.0 positive manual P -1.23 0
IV.SEI.HHZ. 2020-12-05T18:08:33.82 3.0 undecidable manual P 0
IV.CSNT.HHZ. 2020-12-05T18:08:32.37 0.3 undecidable manual S 120 0.2536 50 -0.17 72
IV.FROS.CHZ. 2020-12-05T18:08:31.19 0.1 undecidable manual P 162 0.4083 50 0.31 91
IV.RUFI.EHZ. 2020-12-05T18:08:31.57 0.1 undecidable manual P 58 0.4461 50 0.04 95
IV.MOCL.EHE. 2020-12-05T18:08:31.41 0.1 undecidable manual P 19 0.4281 50 0.19 93
IV.PII.HHZ. 2020-12-05T18:08:30.31 0.1 undecidable manual P 290 0.3561 50 0.33 91
IV.MPPT.EHE. 2020-12-05T18:08:30.33 0.1 undecidable manual P 12 0.3651 50 0.19 94
IV.CRMI.HHZ. 2020-12-05T18:08:30.27 0.3 undecidable manual S 358 0.1961 115 -0.39 70
IV.CSNT.HHZ. 2020-12-05T18:08:27.93 0.3 negative manual P 120 0.2536 50 -0.3 70
IV.CRMI.HHZ. 2020-12-05T18:08:27.11 0.1 undecidable manual P 358 0.1961 115 -0.03 100
IV.TRIF.CHZ. 2020-12-05T18:08:19.19 3.0 undecidable manual S 0
IV.TRIF.CHZ. 2020-12-05T18:08:17.88 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:1.2 0.00010088657 0.1152 AML other m 2020-12-05T18:08:31.01
IV.CRMI.HHN. ML:1 7.5938125E-5 0.1536 AML other m 2020-12-05T18:08:31.20
IV.CRMI.HNE. ML:1.5 0.000212514335 0.1408 AML other m 2020-12-05T18:08:31.02
IV.CRMI.HNN. ML:1.5 0.00019926255 0.1408 AML other m 2020-12-05T18:08:31.13
IV.CSNT.HHE. ML:1.1 5.833435E-5 0.3328 AML other m 2020-12-05T18:08:35.30
IV.CSNT.HHN. ML:1.1 6.2325503E-5 0.2816 AML other m 2020-12-05T18:08:34.25
IV.PII.HHE. ML:1.5 0.00011843355 1.1264 AML other m 2020-12-05T18:08:45.64
IV.PII.HHN. ML:1.2 5.182192855E-5 45.2224 AML other m 2020-12-05T18:08:29.00
IV.FROS.CHE. ML:2.1 0.0003390669 2.432 AML other m 2020-12-05T18:08:49.82
IV.FROS.CHN. ML:1.8 0.0002038084 1.3696 AML other m 2020-12-05T18:08:30.69
IV.RUFI.EHE. ML:1.4 6.558993E-5 0.192 AML other m 2020-12-05T18:08:38.80
IV.RUFI.EHN. ML:1.4 7.187008E-5 47.5264 AML other m 2020-12-05T18:08:08.09
IV.RIBO.EHE.01 ML:2.3 0.00032382195 0.1408 AML other m 2020-12-05T18:08:52.13
TV.SF04.EHE. ML:2 9.758617E-5 0.0512 AML other m 2020-12-05T18:08:47.12
TV.SF04.EHN. ML:1.8 6.28562E-5 0.2176 AML other m 2020-12-05T18:08:44.03
IV.CPGN.HNN. ML:2.5 0.00028680059 0.2944 AML other m 2020-12-05T18:08:46.48
IV.CPGN.EHE. ML:2.4 0.00021409095 0.2048 AML other m 2020-12-05T18:08:47.33
IV.CPGN.EHN. ML:2.3 0.000180398146 0.2432 AML other m 2020-12-05T18:08:53.13
IV.CPGN.HNE. ML:2.4 0.000195012 0.256 AML other m 2020-12-05T18:08:52.69
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