Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 13-01-2024 and time 01:38:32 (Italy) in region 4 km NE Montieri (GR)

A magnitude ML 1.4 earthquake occured in region: 4 km NE Montieri (GR), on

  • 13-01-2024 00:38:32 (UTC)
  • 13-01-2024 01:38:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1690, 11.0360 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.

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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
Montieri GR 4 1204 1204
Chiusdino SI 5 1903 3107
Radicondoli SI 10 914 4021
Castelnuovo di Val di Cecina PI 11 2231 6252
Monticiano SI 12 1571 7823
Monterotondo Marittimo GR 15 1371 9194
Massa Marittima GR 18 8375 17569
Casole d'Elsa SI 19 3897 21466
Pomarance PI 20 5897 27363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Siena (53903 inhabitants)
46 Km N of Grosseto (82087 inhabitants)
67 Km S of Scandicci (50609 inhabitants)
69 Km S of Firenze (382808 inhabitants)
73 Km SE of Livorno (159219 inhabitants)
76 Km W of Arezzo (99543 inhabitants)
79 Km S of Prato (191150 inhabitants)
80 Km SE of Pisa (89158 inhabitants)
86 Km S of Pistoia (90315 inhabitants)
87 Km SE of Lucca (89046 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 2024-01-13
00:38:32		 43.1687 11.0362 9 2024-01-13
00:46:20		 Sala Sismica INGV-Roma 124612041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-13 00:38:32 ± 0.1
Latitude 43.1687 ± 0.0054
Longitude 11.0362 ± 0.0086
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 124612041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 768
Semi-minor axis of confidence ellipse (meter) 40
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 122
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.09713
Epicentral distance of station farthest from the epicenter (degree) 0.66550
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 124612041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-13 00:46:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PII.HHE. 2024-01-13T00:38:54.49 0.6 undecidable manual S 326 73.8705 50 -0.35 43
IV.ARCI.HNZ. 2024-01-13T00:38:48.55 0.3 undecidable manual S 134 50.0166 50 0.08 72
IV.CASP.HHZ. 2024-01-13T00:38:46.53 0.3 undecidable manual S 198 44.1225 50 -0.37 68
IV.CSNT.HHZ. 2024-01-13T00:38:45.11 0.3 undecidable manual S 31 39.5271 50 -0.55 66
IV.PII.HHE. 2024-01-13T00:38:45.88 0.3 undecidable manual P 326 73.8705 50 0.63 60
IV.ARCI.HNZ. 2024-01-13T00:38:41.69 0.1 undecidable manual P 134 50.0166 50 0.12 95
IV.LOCA.HHZ. 2024-01-13T00:38:40.62 0.3 undecidable manual S 50 23.8539 110 -0.33 71
IV.CASP.HHZ. 2024-01-13T00:38:40.85 0.1 undecidable manual P 198 44.1225 50 0.19 95
IV.RIBO.EHZ.01 2024-01-13T00:38:40.73 0.3 undecidable manual S 178 24.3534 110 -0.4 70
IV.CSNT.HHZ. 2024-01-13T00:38:40.00 0.1 undecidable manual P 31 39.5271 50 0.05 98
IV.LOCA.HHZ. 2024-01-13T00:38:37.45 0.1 positive manual P 50 23.8539 110 0.22 98
IV.RIBO.EHZ.01 2024-01-13T00:38:37.59 0.1 undecidable manual P 178 24.3534 110 0.26 97
IV.TRIF.CHZ. 2024-01-13T00:38:36.97 0.3 undecidable manual S 241 12.3765 125 -0.42 72
IV.FROS.CHZ. 2024-01-13T00:38:36.75 0.3 undecidable manual S 65 10.7781 129 -0.2 75
IV.FROS.CHZ. 2024-01-13T00:38:35.20 0.1 undecidable manual P 65 10.7781 129 0.28 98
IV.TRIF.CHZ. 2024-01-13T00:38:35.37 0.1 positive manual P 241 12.3765 125 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHE. ML:1.5 0.0004034512 0.192 AML other m 2024-01-13T00:38:37.19
IV.TRIF.CHE. ML:1.7 0.0006655 0.22 AML other m 2024-01-13T00:38:37.65
IV.FROS.CHN. ML:1.6 0.0005274954499999999 0.112 AML other m 2024-01-13T00:38:37.23
IV.TRIF.CHN. ML:1.6 0.0004240717 0.168 AML other m 2024-01-13T00:38:38.72
IV.RIBO.EHE.01 ML:1.7 0.0002895 1.8 AML other m 2024-01-13T00:38:40.05
IV.RIBO.EHN.01 ML:1.5 0.000182377915 0.08 AML other m 2024-01-13T00:38:41.53
IV.CASP.HHN. ML:1.1 0.000034055833000000004 0.06 AML other m 2024-01-13T00:38:46.89
IV.CASP.HHE. ML:1.1 0.000033278905 0.1 AML other m 2024-01-13T00:38:46.60
IV.CASP.HNE. ML:1.3 0.000059301535000000004 0.18 AML other m 2024-01-13T00:38:46.62
IV.CASP.HNN. ML:1.2 0.00005094687 0.08 AML other m 2024-01-13T00:38:46.67
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