Earthquake with magnitude of ML 0.6 on date 20-10-2019 and time 13:51:42 (UTC) in region 2 km W San Godenzo (FI)

A magnitude ML 0.6 earthquake occured in region: 2 km W San Godenzo (FI), on

  • 20-10-2019 13:51:42 (UTC)
  • 20-10-2019 15:51:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.93, 11.6 at 9 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
San Godenzo FI 2 1167 1167
Dicomano FI 7 5515 6682
Londa FI 8 1840 8522
Vicchio FI 10 8044 16566
Rufina FI 14 7346 23912
Premilcuore FC 16 799 24711
Marradi FI 17 3139 27850
Borgo San Lorenzo FI 17 18211 46061
Pratovecchio Stia AR 18 5845 51906
Portico e San Benedetto FC 19 756 52662
Pelago FI 19 7660 60322

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Firenze (382808 inhabitants)
38 Km E of Scandicci (50609 inhabitants)
40 Km E of Prato (191150 inhabitants)
46 Km SW of Faenza (58541 inhabitants)
48 Km S of Imola (69797 inhabitants)
49 Km SW of Forlì (117913 inhabitants)
54 Km E of Pistoia (90315 inhabitants)
56 Km NW of Arezzo (99543 inhabitants)
57 Km W of Cesena (96758 inhabitants)
66 Km SE of Bologna (386663 inhabitants)
71 Km NE of Siena (53903 inhabitants)
73 Km SW of Ravenna (159116 inhabitants)
79 Km W of Rimini (147750 inhabitants)
88 Km E of Lucca (89046 inhabitants)
96 Km SE of Modena (184973 inhabitants)
99 Km E of Pisa (89158 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 0.6 2019-10-20
13:51:42
43.93 11.6 9 2019-10-20
13:58:41
Sala Sismica INGV-Roma 73357811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-20 13:51:42 ± 0.06
Latitude 43.93 ± 0.00
Longitude 11.60 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73357811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 318
Semi-minor axis of confidence ellipse (meter) 167
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.10882
Epicentral distance of station farthest from the epicenter (degree) 0.30847
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 73357811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-20 13:58:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOCL.EHZ. 2019-10-20T13:51:54.29 0.6 undecidable manual S 285 0.3085 50 0.06 50
IV.SEI.HHZ. 2019-10-20T13:51:50.72 0.6 undecidable manual S 307 0.2131 110 -0.14 50
IV.LMD.HHZ. 2019-10-20T13:51:49.52 0.3 undecidable manual S 28 0.17 115 0.19 75
IV.SFI.HNZ. 2019-10-20T13:51:49.68 0.3 undecidable manual S 97 0.1817 113 -0.06 77
IV.MOCL.EHZ. 2019-10-20T13:51:49.11 0.6 undecidable manual P 285 0.3085 50 0.01 50
IV.ASQU.HHZ. 2019-10-20T13:51:49.88 0.6 undecidable manual S 133 0.1907 113 -0.16 50
IV.RUFI.EHZ. 2019-10-20T13:51:47.28 0.3 undecidable manual S 215 0.1088 126 0.01 78
IV.LMD.HHZ. 2019-10-20T13:51:46.23 0.6 undecidable manual P 28 0.17 115 -0.05 51
IV.SFI.HNZ. 2019-10-20T13:51:46.58 0.3 undecidable manual P 97 0.1817 113 0.07 76
IV.ASQU.HHZ. 2019-10-20T13:51:46.59 0.3 undecidable manual P 133 0.1907 113 -0.1 76
IV.SEI.HHZ. 2019-10-20T13:51:46.91 0.3 undecidable manual P 307 0.2131 110 -0.25 73
IV.RUFI.EHZ. 2019-10-20T13:51:45.31 0.1 undecidable manual P 215 0.1088 126 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RUFI.EHE. ML:0.6 4.783567E-5 0.3392 AML other m 2019-10-20T13:51:47.50
IV.RUFI.EHN. ML:0.8 6.8579365E-5 0.2368 AML other m 2019-10-20T13:51:47.60
IV.LMD.HHE. ML:0.6 2.826655E-5 0.1856 AML other m 2019-10-20T13:51:49.72
IV.LMD.HHN. ML:0.9 7.074652E-5 0.256 AML other m 2019-10-20T13:51:49.79
IV.ASQU.HHE. ML:0.3 1.32944725E-5 0.1216 AML other m 2019-10-20T13:51:50.23
IV.ASQU.HHN. ML:-0.2 4.75803E-6 0.32 AML other m 2019-10-20T13:51:49.97
IV.SEI.HHE. ML:0.8 4.1459875E-5 0.5184 AML other m 2019-10-20T13:51:50.86
IV.SEI.HHN. ML:0.7 2.85384018E-5 0.7424 AML other m 2019-10-20T13:51:51.21
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