Earthquake with magnitude of ML 1.2 on date 25-03-2024 and time 15:41:08 (UTC) in region 1 km W Montieri (GR)

A magnitude ML 1.2 earthquake occured in region: 1 km W Montieri (GR), on

  • 25-03-2024 15:41:08 (UTC)
  • 25-03-2024 16:41:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1280, 11.0010 at 10 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
Montieri GR 1 1204 1204
Chiusdino SI 8 1903 3107
Castelnuovo di Val di Cecina PI 12 2231 5338
Monterotondo Marittimo GR 12 1371 6709
Massa Marittima GR 13 8375 15084
Monticiano SI 15 1571 16655
Radicondoli SI 15 914 17569
Roccastrada GR 19 9199 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Siena (53903 inhabitants)
42 Km N of Grosseto (82087 inhabitants)
72 Km S of Scandicci (50609 inhabitants)
73 Km SE of Livorno (159219 inhabitants)
74 Km S of Firenze (382808 inhabitants)
81 Km W of Arezzo (99543 inhabitants)
81 Km SE of Pisa (89158 inhabitants)
84 Km S of Prato (191150 inhabitants)
89 Km SE of Lucca (89046 inhabitants)
90 Km S of Pistoia (90315 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 1.2 2024-03-25
15:41:08
43.1283 11.0012 10 2024-03-25
18:06:42
Sala Sismica INGV-Roma 126159241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-25 15:41:08 ± 0.2
Latitude 43.1283 ± 0.0243
Longitude 11.0012 ± 0.0283
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126159241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3474
Semi-minor axis of confidence ellipse (meter) 349
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 320
Circular confidence region, given by single value of horizontal uncertainty (meter) 3470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 148
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35163
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 126159241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-25 18:06:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CASP.HHZ. 2024-03-25T15:41:21.37 0.6 undecidable manual S 196 39.0276 50 -0.35 46
IV.LOCA.HHZ. 2024-03-25T15:41:18.60 0.6 undecidable manual S 47 28.9488 50 -0.42 46
IV.CASP.HHZ. 2024-03-25T15:41:16.82 1.0 undecidable manual P 196 39.0276 50 0.61 21
IV.LOCA.HHZ. 2024-03-25T15:41:15.00 0.6 positive manual P 47 28.9488 50 0.34 47
IV.FROS.CHZ. 2024-03-25T15:41:14.84 0.3 undecidable manual S 54 15.4734 124 -0.32 73
IV.TRIF.CHZ. 2024-03-25T15:41:12.74 0.6 undecidable manual S 259 8.0808 142 -0.53 47
IV.FROS.CHZ. 2024-03-25T15:41:12.75 0.1 undecidable manual P 54 15.4734 124 0.33 97
IV.RIBO.EHZ.01 2024-03-25T15:41:11.98 3.0 positive manual P -0.61 0
IV.TRIF.CHZ. 2024-03-25T15:41:11.56 0.1 positive manual P 259 8.0808 142 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:1.4 0.0003325 0.08 AML other m 2024-03-25T15:41:12.90
IV.TRIF.CHE. ML:1.4 0.00032 0.1 AML other m 2024-03-25T15:41:13.26
IV.FROS.CHE. ML:1.2 0.0001525 1.36 AML other m 2024-03-25T15:41:14.91
IV.FROS.CHN. ML:1.3 0.000177 0.44 AML other m 2024-03-25T15:41:15.21
IV.LOCA.HHE. ML:0.8 0.000036 1.04 AML other m 2024-03-25T15:41:18.36
IV.LOCA.HHN. ML:0.8 0.0000289 0.6 AML other m 2024-03-25T15:41:19.41
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