Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 17-03-2024 and time 20:24:54 (UTC) in region 4 km NW San Godenzo (FI)

A magnitude ML 0.9 earthquake occured in region: 4 km NW San Godenzo (FI), on

  • 17-03-2024 20:24:54 (UTC)
  • 17-03-2024 21:24:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9570, 11.5990 at 8 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.

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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
San Godenzo FI 4 1167 1167
Dicomano FI 9 5515 6682
Vicchio FI 11 8044 14726
Londa FI 11 1840 16566
Marradi FI 13 3139 19705
Premilcuore FC 14 799 20504
Portico e San Benedetto FC 17 756 21260
Borgo San Lorenzo FI 17 18211 39471
Rufina FI 17 7346 46817
Palazzuolo sul Senio FI 18 1154 47971
Tredozio FC 18 1212 49183

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km NE of Firenze (382808 inhabitants)
40 Km NE of Scandicci (50609 inhabitants)
41 Km E of Prato (191150 inhabitants)
43 Km SW of Faenza (58541 inhabitants)
45 Km S of Imola (69797 inhabitants)
46 Km SW of Forlì (117913 inhabitants)
55 Km E of Pistoia (90315 inhabitants)
55 Km W of Cesena (96758 inhabitants)
59 Km NW of Arezzo (99543 inhabitants)
63 Km SE of Bologna (386663 inhabitants)
70 Km SW of Ravenna (159116 inhabitants)
74 Km NE of Siena (53903 inhabitants)
78 Km W of Rimini (147750 inhabitants)
89 Km E of Lucca (89046 inhabitants)
94 Km SE of Modena (184973 inhabitants)
98 Km S of Ferrara (133155 inhabitants)
100 Km E of Pisa (89158 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
Reviewed
Rev100 		ML 0.9 2024-03-17
20:24:54		 43.9573 11.599 8 2024-03-17
20:33:18		 Sala Sismica INGV-Roma 125949841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-17 20:24:54 ± 0.08
Latitude 43.9573 ± 0.0027
Longitude 11.5990 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125949841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 259
Semi-minor axis of confidence ellipse (meter) 68
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 139
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.04766
Epicentral distance of station farthest from the epicenter (degree) 0.42358
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 125949841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-17 20:33:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VISG.HHE. 2024-03-17T20:25:04.44 0.3 undecidable manual S 333 28.8489 106 -0.2 70
IV.SEI.HHZ. 2024-03-17T20:25:02.31 0.3 undecidable manual S 299 21.9669 111 -0.07 73
IV.CRE.HHE. 2024-03-17T20:25:02.93 0.6 undecidable manual P 143 47.0196 50 -0.3 44
IV.BOSL.HHZ. 2024-03-17T20:25:01.39 0.6 undecidable manual S 261 18.1707 115 0.23 47
IV.SFI.EHZ. 2024-03-17T20:25:01.92 0.3 undecidable manual S 106 20.6682 112 -0.03 74
IV.RUFI.EHZ. 2024-03-17T20:25:00.03 0.3 undecidable manual S 208 15.0738 119 -0.16 73
IV.VISG.HHE. 2024-03-17T20:25:00.20 0.3 undecidable manual P 333 28.8489 106 -0.03 73
IV.LMD.HHZ. 2024-03-17T20:25:00.43 0.3 undecidable manual S 33 15.873 118 -0.01 75
IT.MRR.HGZ. 2024-03-17T20:24:59.16 0.3 undecidable manual S 2 11.877 125 -0.09 74
IV.BOSL.HHZ. 2024-03-17T20:24:58.51 0.6 positive manual P 261 18.1707 115 0.28 47
IV.SFI.EHZ. 2024-03-17T20:24:58.80 1.0 negative manual P 106 20.6682 112 0.12 24
IV.SEI.HHZ. 2024-03-17T20:24:58.95 0.6 negative manual P 299 21.9669 111 0.02 49
IV.VMGN.HHZ. 2024-03-17T20:24:57.48 0.3 undecidable manual S 267 5.2947 148 -0.17 74
IV.LMD.HHZ. 2024-03-17T20:24:57.93 0.3 undecidable manual P 33 15.873 118 0.12 73
IT.MRR.HGZ. 2024-03-17T20:24:57.33 0.1 undecidable manual P 2 11.877 125 0.21 96
IV.RUFI.EHZ. 2024-03-17T20:24:57.78 0.6 undecidable manual P 208 15.0738 119 0.12 49
IV.VMGN.HHZ. 2024-03-17T20:24:56.28 0.1 undecidable manual P 267 5.2947 148 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.2 0.00013900000000000002 0.08 AML other m 2024-03-17T20:25:00.88
IV.LMD.HHN. ML:1.1 0.00011898469999999999 0.08 AML other m 2024-03-17T20:25:00.90
IV.SEI.HHN. ML:1.2 0.00010295 0.34 AML other m 2024-03-17T20:25:02.81
IV.SEI.HHE. ML:0.9 0.00005889447 0.76 AML other m 2024-03-17T20:25:02.69
IV.SFI.EHE. ML:0.4 0.0000194100075 1.42 AML other m 2024-03-17T20:25:02.42
IV.SFI.EHN. ML:0.4 0.000021927957499999998 0.2 AML other m 2024-03-17T20:25:02.28
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