Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 10-04-2024 and time 20:06:58 (Italy) in region 6 km NW Greve in Chianti (FI)

A magnitude ML 1.0 earthquake occured in region: 6 km NW Greve in Chianti (FI), on

  • 10-04-2024 18:06:58 (UTC)
  • 10-04-2024 20:06:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6270, 11.2630 at 11 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
Greve in Chianti FI 7 13862 13862
Impruneta FI 7 14615 28477
San Casciano in Val di Pesa FI 7 17062 45539
Tavarnelle Val di Pesa FI 10 7800 53339
Barberino Val d'Elsa FI 12 4386 57725
Bagno a Ripoli FI 15 25611 83336
Montespertoli FI 15 13537 96873
Figline e Incisa Valdarno FI 16 23505 120378
Firenze FI 16 382808 503186
Scandicci FI 16 50609 553795
Castellina in Chianti SI 18 2859 556654
Radda in Chianti SI 18 1613 558267
Rignano sull'Arno FI 19 8651 566918
Certaldo FI 20 16121 583039
Poggibonsi SI 20 29196 612235

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km S of Firenze (382808 inhabitants)
16 Km SE of Scandicci (50609 inhabitants)
31 Km SE of Prato (191150 inhabitants)
35 Km N of Siena (53903 inhabitants)
44 Km SE of Pistoia (90315 inhabitants)
53 Km W of Arezzo (99543 inhabitants)
66 Km E of Lucca (89046 inhabitants)
70 Km E of Pisa (89158 inhabitants)
77 Km E of Livorno (159219 inhabitants)
86 Km E of Viareggio (62467 inhabitants)
89 Km SW of Imola (69797 inhabitants)
89 Km SW of Faenza (58541 inhabitants)
91 Km SW of Forlì (117913 inhabitants)
97 Km S of Bologna (386663 inhabitants)
97 Km SW of Cesena (96758 inhabitants)
97 Km N of Grosseto (82087 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 1.0 2024-04-10
18:06:58		 43.627 11.2632 11 2024-04-10
18:12:30		 Sala Sismica INGV-Roma 126628931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-10 18:06:58 ± 0.07
Latitude 43.6270 ± 0.0144
Longitude 11.2632 ± 0.0087
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126628931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1542
Semi-minor axis of confidence ellipse (meter) 719
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 179
Circular confidence region, given by single value of horizontal uncertainty (meter) 1540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49822
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 126628931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-10 18:12:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2024-04-10T18:07:24.37 3.0 undecidable manual S 0.16 0
IV.BOSL.HHZ. 2024-04-10T18:07:10.08 0.3 undecidable manual S 15 34.8429 50 -0.09 72
IV.CRE.HHZ. 2024-04-10T18:07:08.85 1.0 positive manual P 91 55.3002 50 0.56 21
IV.CRMI.HHZ. 2024-04-10T18:07:08.70 0.6 undecidable manual S 310 29.4483 50 -0.02 49
IV.RUFI.EHZ. 2024-04-10T18:07:08.69 0.6 undecidable manual S 40 30.6471 50 -0.34 46
IV.SEI.HHZ. 2024-04-10T18:07:07.56 0.6 positive manual P 9 48.0186 50 0.39 44
IV.CSNT.HHZ. 2024-04-10T18:07:05.18 0.6 undecidable manual S 173 17.1717 122 -0.13 49
IV.BOSL.HHZ. 2024-04-10T18:07:05.15 0.1 undecidable manual P 15 34.8429 50 0 97
IV.RUFI.EHZ. 2024-04-10T18:07:04.54 0.1 undecidable manual P 40 30.6471 50 0.05 97
IV.CRMI.HHZ. 2024-04-10T18:07:04.11 1.0 positive manual P 310 29.4483 50 -0.2 24
IV.OSSC.HHZ. 2024-04-10T18:07:03.68 0.6 undecidable manual S 187 11.5773 133 -0.06 50
IV.CSNT.HHZ. 2024-04-10T18:07:02.31 0.1 undecidable manual P 173 17.1717 122 -0.03 100
IV.OSSC.HHZ. 2024-04-10T18:07:01.50 0.1 positive manual P 187 11.5773 133 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.5 0.0003565 0.12 AML other m 2024-04-10T18:07:03.94
IV.OSSC.HHN. ML:1.2 0.0001995 1.32 AML other m 2024-04-10T18:07:04.96
IV.CSNT.HHN. ML:0.9 0.00007115 0.9 AML other m 2024-04-10T18:07:05.75
IV.CSNT.HHE. ML:1.1 0.00009534999999999999 0.9 AML other m 2024-04-10T18:07:07.85
IV.BOSL.HHE. ML:0.7 0.0000181 1.16 AML other m 2024-04-10T18:07:11.65
IV.BOSL.HHN. ML:0.6 0.000015105 1.26 AML other m 2024-04-10T18:07:16.09
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