Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-02-2024 and time 02:58:49 (Italy) in region 4 km S Radicondoli (SI)

A magnitude ML 1.4 earthquake occured in region: 4 km S Radicondoli (SI), on

  • 17-02-2024 01:58:49 (UTC)
  • 17-02-2024 02:58:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2260, 11.0390 at 7 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
Radicondoli SI 4 914 914
Chiusdino SI 9 1903 2817
Montieri GR 11 1204 4021
Castelnuovo di Val di Cecina PI 11 2231 6252
Casole d'Elsa SI 13 3897 10149
Monticiano SI 15 1571 11720
Pomarance PI 16 5897 17617
Sovicille SI 17 10116 27733
Monterotondo Marittimo GR 17 1371 29104

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Siena (53903 inhabitants)
52 Km N of Grosseto (82087 inhabitants)
60 Km S of Scandicci (50609 inhabitants)
63 Km S of Firenze (382808 inhabitants)
69 Km SE of Livorno (159219 inhabitants)
73 Km S of Prato (191150 inhabitants)
73 Km W of Arezzo (99543 inhabitants)
75 Km SE of Pisa (89158 inhabitants)
79 Km S of Pistoia (90315 inhabitants)
81 Km SE of Lucca (89046 inhabitants)
96 Km SE of Viareggio (62467 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 1.4 2024-02-17
01:58:49		 43.2257 11.0392 7 2024-02-17
03:04:49		 Sala Sismica INGV-Roma 125324851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-17 01:58:49 ± 0.19
Latitude 43.2257 ± 0.0108
Longitude 11.0392 ± 0.0123
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125324851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1082
Semi-minor axis of confidence ellipse (meter) 955
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 140
Circular confidence region, given by single value of horizontal uncertainty (meter) 1080.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 0.49103
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:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 125324851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-17 03:04:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARCI.HHZ. 2024-02-17T01:58:59.95 1.0 undecidable manual P 139 54.501 50 -0.29 23
IV.RIBO.EHZ.01 2024-02-17T01:58:56.19 0.6 undecidable manual P 179 30.6471 103 -0.02 51
IV.LOCA.HHZ. 2024-02-17T01:58:56.93 0.3 undecidable manual S 63 20.1687 109 -0.37 73
IV.CSNT.HHZ. 2024-02-17T01:58:56.81 0.3 positive manual P 36 34.1436 102 -0.07 75
IV.TRIF.CHZ. 2024-02-17T01:58:55.96 0.3 undecidable manual S 222 16.5723 113 -0.17 76
IV.LOCA.HHZ. 2024-02-17T01:58:54.41 0.1 positive manual P 63 20.1687 109 0.24 100
IV.FROS.CHZ. 2024-02-17T01:58:53.95 0.3 undecidable manual S 100 9.5793 126 -0.08 79
IV.TRIF.CHZ. 2024-02-17T01:58:53.72 1.0 positive manual P 222 16.5723 113 0.22 25
IV.FROS.CHZ. 2024-02-17T01:58:52.59 0.1 negative manual P 100 9.5793 126 0.3 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHE. ML:1.7 0.0008894278499999999 0.12 AML other m 2024-02-17T01:58:54.25
IV.FROS.CHN. ML:1.7 0.0008258185 0.168 AML other m 2024-02-17T01:58:54.12
IV.TRIF.CHE. ML:1.5 0.00027438960000000003 0.224 AML other m 2024-02-17T01:58:56.63
IV.TRIF.CHN. ML:1.5 0.0002750899 0.096 AML other m 2024-02-17T01:58:56.90
IV.LOCA.HNE. ML:1.5 0.00025657865000000004 0.1008 AML other m 2024-02-17T01:58:57.17
IV.LOCA.HNN. ML:1.6 0.000314572 0.1296 AML other m 2024-02-17T01:58:57.32
IV.LOCA.HHE. ML:1.5 0.00024380035 0.08 AML other m 2024-02-17T01:58:57.16
IV.LOCA.HHN. ML:1.6 0.0003094982 0.1392 AML other m 2024-02-17T01:58:57.31
IV.RIBO.EHE.01 ML:1.4 0.00011479300000000001 0.2608 AML other m 2024-02-17T01:59:00.05
IV.RIBO.EHN.01 ML:1.2 0.00007637582500000001 0.1808 AML other m 2024-02-17T01:59:00.74
IV.CSNT.HHE. ML:0.7 0.000019454430499999998 0.1408 AML other m 2024-02-17T01:59:01.56
IV.CSNT.HHN. ML:0.7 0.000021606050000000003 0.3808 AML other m 2024-02-17T01:59:03.66
IV.ARCI.HHE. ML:0.8 0.000016687640999999998 0.24 AML other m 2024-02-17T01:59:01.92
IV.ARCI.HHN. ML:0.8 0.00001399879 0.1408 AML other m 2024-02-17T01:59:08.32
IV.ARCI.HNE. ML:1.3 0.000050032705 0.8608 AML other m 2024-02-17T01:59:17.59
IV.ARCI.HNN. ML:1.3 0.000047733325 1.0896 AML other m 2024-02-17T01:59:05.56
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