Earthquake with magnitude of ML 1.6 on date 17-01-2020 and time 17:25:02 (Italy) in region 4 km N Castelfiorentino (FI)

A magnitude ML 1.6 earthquake occured in region: 4 km N Castelfiorentino (FI), on

  • 17-01-2020 16:25:02 (UTC)
  • 17-01-2020 17:25:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.65, 10.97 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 4 17504 17504
Empoli FI 8 48109 65613
Montespertoli FI 8 13537 79150
Montelupo Fiorentino FI 10 14098 93248
San Miniato PI 10 27934 121182
Capraia e Limite FI 11 7670 128852
Montaione FI 11 3700 132552
Gambassi Terme FI 12 4870 137422
Certaldo FI 12 16121 153543
Cerreto Guidi FI 15 10870 164413
Fucecchio FI 16 23618 188031
Vinci FI 16 14604 202635
Palaia PI 17 4612 207247
San Casciano in Val di Pesa FI 17 17062 224309
Montopoli in Val d'Arno PI 17 11148 235457
Santa Croce sull'Arno PI 17 14601 250058
Lastra a Signa FI 18 20156 270214
Signa FI 18 19179 289393
Tavarnelle Val di Pesa FI 19 7800 297193
Carmignano PO 19 14450 311643
Castelfranco di Sotto PI 19 13427 325070
Barberino Val d'Elsa FI 20 4386 329456
Lamporecchio PT 20 7508 336964

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Scandicci (50609 inhabitants)
27 Km SW of Firenze (382808 inhabitants)
28 Km SW of Prato (191150 inhabitants)
32 Km S of Pistoia (90315 inhabitants)
44 Km SE of Lucca (89046 inhabitants)
47 Km E of Pisa (89158 inhabitants)
47 Km NW of Siena (53903 inhabitants)
54 Km E of Livorno (159219 inhabitants)
63 Km E of Viareggio (62467 inhabitants)
76 Km W of Arezzo (99543 inhabitants)
80 Km SE of Massa (69479 inhabitants)
85 Km SE of Carrara (63133 inhabitants)
99 Km SW of Imola (69797 inhabitants)
99 Km SW of Bologna (386663 inhabitants)
99 Km N of Grosseto (82087 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 1.6 2020-01-17
16:25:02
43.65 10.97 10 2020-01-17
16:35:09
Sala Sismica INGV-Roma 75615611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-17 16:25:02 ± 0.16
Latitude 43.65 ± 0.01
Longitude 10.97 ± 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 75615611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 590
Semi-minor axis of confidence ellipse (meter) 248
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.90112
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 75615611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-17 16:35:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.PLTA.HNZ. 2020-01-17T16:26:38.74 3.0 undecidable manual Sn 0.93 0
IV.VVLD.HHZ. 2020-01-17T16:26:27.90 3.0 undecidable manual Sg 6.74 0
IV.FIAM.HHZ. 2020-01-17T16:26:09.39 3.0 undecidable manual Sg 1.58 0
IV.VVLD.HHZ. 2020-01-17T16:25:51.69 3.0 undecidable manual Pg 4.91 0
IV.TOLF.HHZ. 2020-01-17T16:25:36.26 3.0 undecidable manual Pg 1.79 0
IV.PLMA.HHZ. 2020-01-17T16:25:32.90 1.0 undecidable manual S 297 0.9011 50 0.62 19
IV.SSFR.HHZ. 2020-01-17T16:25:31.76 3.0 undecidable manual P 2.76 0
IV.CRE.HHZ. 2020-01-17T16:25:26.89 0.3 undecidable manual S 92 0.7087 50 0.31 66
IV.ASQU.HHZ. 2020-01-17T16:25:23.20 0.3 undecidable manual S 75 0.6088 50 -0.42 66
IV.TRIF.CHZ. 2020-01-17T16:25:20.75 0.3 undecidable manual S 185 0.5333 50 -0.63 62
IV.RONT.HHZ. 2020-01-17T16:25:20.47 0.3 undecidable manual S 44 0.4802 50 0.66 62
IV.PLMA.HHZ. 2020-01-17T16:25:20.44 0.1 undecidable manual P 297 0.9011 50 0.57 79
IV.SEI.HHZ. 2020-01-17T16:25:20.47 0.3 undecidable manual S 34 0.4937 50 0.27 69
IV.RINC.HHZ. 2020-01-17T16:25:20.88 0.3 undecidable manual S 62 0.5171 50 -0.02 73
IV.BDI.HHZ. 2020-01-17T16:25:19.98 0.3 undecidable manual S 327 0.4973 50 -0.31 69
IV.MAGO.CHZ. 2020-01-17T16:25:18.59 0.3 undecidable manual S 212 0.4371 50 0.08 73
IV.ZCCA.HHZ. 2020-01-17T16:25:18.27 0.3 undecidable manual P 0 0.7042 50 1.77 33
IV.FROS.CHZ. 2020-01-17T16:25:18.69 0.1 undecidable manual S 163 0.456 50 -0.4 91
IV.RUFI.EHZ. 2020-01-17T16:25:17.78 0.1 undecidable manual S 64 0.4326 50 -0.61 85
GU.POPM.HHZ. 2020-01-17T16:25:17.80 0.3 undecidable manual S 339 0.4281 50 -0.44 68
IV.CRE.HHZ. 2020-01-17T16:25:16.95 0.1 undecidable manual P 92 0.7087 50 0.37 87
IV.ASQU.HHZ. 2020-01-17T16:25:15.21 0.1 undecidable manual P 75 0.6088 50 0.34 89
IV.MPPT.EHZ. 2020-01-17T16:25:14.63 0.3 undecidable manual S 15 0.3229 50 -0.5 68
IV.PII.HHZ. 2020-01-17T16:25:14.56 0.1 undecidable manual S 283 0.3318 50 -0.85 79
IV.TRIF.CHZ. 2020-01-17T16:25:14.02 0.1 undecidable manual P 185 0.5333 50 0.44 88
IV.RONT.HHZ. 2020-01-17T16:25:13.32 0.1 undecidable manual P 44 0.4802 50 0.65 83
IV.SEI.HHZ. 2020-01-17T16:25:13.16 0.1 undecidable manual P 34 0.4937 50 0.26 93
IV.RINC.HHZ. 2020-01-17T16:25:13.53 0.1 undecidable manual P 62 0.5171 50 0.23 93
GU.CARD.HHZ. 2020-01-17T16:25:13.31 0.1 undecidable manual P 317 0.5189 50 -0.01 97
IV.CSNT.HHZ. 2020-01-17T16:25:13.56 0.3 undecidable manual S 127 0.2878 50 -0.55 67
IV.BDI.HHZ. 2020-01-17T16:25:13.23 0.1 undecidable manual P 327 0.4973 50 0.28 92
IV.MAGO.CHZ. 2020-01-17T16:25:12.34 0.1 undecidable manual P 212 0.4371 50 0.41 91
IV.OSSC.HHZ. 2020-01-17T16:25:12.23 0.3 undecidable manual S 122 0.2329 50 -0.24 73
IV.FROS.CHZ. 2020-01-17T16:25:12.53 0.1 undecidable manual P 163 0.456 50 0.28 93
GU.POPM.HHZ. 2020-01-17T16:25:11.99 0.1 undecidable manual P 339 0.4281 50 0.22 95
IV.RUFI.EHZ. 2020-01-17T16:25:11.85 0.1 undecidable manual P 64 0.4326 50 0 99
IV.PII.HHZ. 2020-01-17T16:25:10.18 0.1 negative manual P 283 0.3318 50 0.05 100
IV.CSNT.HHZ. 2020-01-17T16:25:09.15 0.1 undecidable manual P 127 0.2878 50 -0.23 97
IV.MPPT.EHZ. 2020-01-17T16:25:09.76 0.1 negative manual P 15 0.3229 50 -0.21 97
IV.CRMI.HHZ. 2020-01-17T16:25:08.93 0.1 undecidable manual S 2 0.1493 122 -0.75 85
IV.OSSC.HHZ. 2020-01-17T16:25:08.23 0.1 undecidable manual P 122 0.2329 50 -0.21 99
IV.CRMI.HHZ. 2020-01-17T16:25:06.60 0.1 positive manual P 2 0.1493 122 -0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:1.4 0.000205 0.7 AML other m 2020-01-17T16:25:09.48
IV.CRMI.HHN. ML:1.4 0.000226 0.16 AML other m 2020-01-17T16:25:09.53
IV.OSSC.HHN. ML:1.3 0.0001067 1.36 AML other m 2020-01-17T16:25:12.69
IV.OSSC.HHE. ML:1.3 0.0001275 0.58 AML other m 2020-01-17T16:25:13.67
IV.PII.HHE. ML:2 0.00042 0.16 AML other m 2020-01-17T16:25:14.83
IV.CSNT.HHE. ML:1.1 5.375E-5 0.44 AML other m 2020-01-17T16:25:15.36
IV.MPPT.EHE. ML:1.3 8.025E-5 1.46 AML other m 2020-01-17T16:25:15.98
IV.PII.HHN. ML:2.1 0.0004805 1.06 AML other m 2020-01-17T16:25:15.82
IV.MPPT.EHN. ML:1.4 9.255E-5 0.18 AML other m 2020-01-17T16:25:15.86
IV.CSNT.HHN. ML:1.3 8.93E-5 0.32 AML other m 2020-01-17T16:25:16.78
IV.RUFI.EHN. ML:1.8 0.00016755 0.24 AML other m 2020-01-17T16:25:18.33
IV.RUFI.EHE. ML:1.8 0.000187 0.22 AML other m 2020-01-17T16:25:18.43
IV.FROS.CHE. ML:2 0.000248 1.72 AML other m 2020-01-17T16:25:19.04
GU.POPM.HHE. ML:1.6 0.000113 0.28 AML other m 2020-01-17T16:25:19.54
IV.MAGO.CHE. ML:1.4 6.435E-5 0.7 AML other m 2020-01-17T16:25:19.56
IV.FROS.CHN. ML:1.9 0.00021 0.56 AML other m 2020-01-17T16:25:20.08
IV.SEI.HHN. ML:1.6 9.62E-5 0.34 AML other m 2020-01-17T16:25:21.54
IV.RONT.HHN. ML:1.9 0.000174 0.96 AML other m 2020-01-17T16:25:21.22
IV.RINC.HHE. ML:1.5 7.2E-5 0.78 AML other m 2020-01-17T16:25:22.67
IV.RONT.HHE. ML:2 0.000219 0.82 AML other m 2020-01-17T16:25:22.78
IV.RINC.HHN. ML:1.5 6.61E-5 1.22 AML other m 2020-01-17T16:25:22.71
IV.TRIF.CHE. ML:1.6 8.465E-5 0.74 AML other m 2020-01-17T16:25:22.60
IV.TRIF.CHN. ML:1.4 5.41E-5 0.74 AML other m 2020-01-17T16:25:23.43
GU.POPM.HHN. ML:1.7 0.000135 0.14 AML other m 2020-01-17T16:25:23.78
GU.CARD.HHE. ML:1.4 5.14E-5 0.38 AML other m 2020-01-17T16:25:23.68
IV.SEI.HHE. ML:1.5 7.05E-5 1.7 AML other m 2020-01-17T16:25:23.97
GU.CARD.HHN. ML:1.5 6.9E-5 0.74 AML other m 2020-01-17T16:25:24.70
IV.ASQU.HHN. ML:1.5 5.82E-5 1.48 AML other m 2020-01-17T16:25:24.92
IV.ASQU.HHE. ML:1.5 5.99E-5 1.58 AML other m 2020-01-17T16:25:25.82
IV.CRE.HHE. ML:1.4 3.67E-5 0.36 AML other m 2020-01-17T16:25:27.38
IV.MAGO.CHN. ML:2.9 0.0020475 1.48 AML other m 2020-01-17T16:25:29.83
IV.CRE.HHN. ML:1.6 4.83E-5 0.86 AML other m 2020-01-17T16:25:29.71
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