Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 24-03-2022 and time 00:54:16 (Italy) in region 2 km W Montieri (GR)

A magnitude ML 1.2 earthquake occured in region: 2 km W Montieri (GR), on

  • 23-03-2022 23:54:16 (UTC)
  • 24-03-2022 00:54:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1400, 10.9950 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.

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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 2 1204 1204
Chiusdino SI 8 1903 3107
Castelnuovo di Val di Cecina PI 10 2231 5338
Monterotondo Marittimo GR 11 1371 6709
Massa Marittima GR 13 8375 15084
Radicondoli SI 14 914 15998
Monticiano SI 15 1571 17569

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Siena (53903 inhabitants)
43 Km N of Grosseto (82087 inhabitants)
71 Km S of Scandicci (50609 inhabitants)
72 Km SE of Livorno (159219 inhabitants)
73 Km SW of Firenze (382808 inhabitants)
80 Km SE of Pisa (89158 inhabitants)
81 Km W of Arezzo (99543 inhabitants)
83 Km S of Prato (191150 inhabitants)
88 Km SE of Lucca (89046 inhabitants)
89 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 2022-03-23
23:54:16		 43.1403 10.9948 10 2022-03-24
00:02:24		 Sala Sismica INGV-Roma 102305311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-03-23 23:54:16 ± 0.12
Latitude 43.1403 ± 0.0072
Longitude 10.9948 ± 0.0111
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 102305311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 940
Semi-minor axis of confidence ellipse (meter) 629
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 126
Circular confidence region, given by single value of horizontal uncertainty (meter) 940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
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) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.42448
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 102305311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-03-24 00:02:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2022-03-23T23:54:30.25 0.3 undecidable manual S 33 43.9227 50 -0.22 69
IV.CASP.HHZ. 2022-03-23T23:54:29.20 0.1 undecidable manual S 195 40.2264 50 -0.26 92
IV.MAGO.CHN. 2022-03-23T23:54:26.41 0.1 undecidable manual S 299 30.9468 50 -0.6 85
IV.OSSC.HHZ. 2022-03-23T23:54:25.29 0.1 undecidable manual P 25 47.1195 50 0.42 88
IV.CASP.HHZ. 2022-03-23T23:54:24.28 0.3 undecidable manual P 195 40.2264 50 0.47 66
IV.CSNT.HHZ. 2022-03-23T23:54:24.80 1.0 negative manual P 33 43.9227 50 0.41 22
IV.RIBO.EHZ.01 2022-03-23T23:54:23.96 0.3 undecidable manual S 169 21.6672 115 -0.41 69
IV.MAGO.CHN. 2022-03-23T23:54:22.76 0.3 undecidable manual P 299 30.9468 50 0.37 68
IV.FROS.CHZ. 2022-03-23T23:54:21.95 0.1 undecidable manual S 59 15.1737 124 -0.46 92
IV.RIBO.EHZ.01 2022-03-23T23:54:21.08 0.1 undecidable manual P 169 21.6672 115 0.21 96
IV.TRIF.CHZ. 2022-03-23T23:54:20.44 0.1 undecidable manual S 249 7.9809 142 -0.12 100
IV.TRIF.CHZ. 2022-03-23T23:54:19.00 0.1 negative manual P 249 7.9809 142 0.33 96
IV.FROS.CHZ. 2022-03-23T23:54:19.93 0.1 positive manual P 59 15.1737 124 0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHE. ML:1.7 0.0006655 0.08 AML other m 2022-03-23T23:54:20.62
IV.TRIF.CHN. ML:1.5 0.00047549999999999996 0.08 AML other m 2022-03-23T23:54:20.69
IV.FROS.CHN. ML:1.3 0.00017999999999999998 0.4 AML other m 2022-03-23T23:54:22.26
IV.FROS.CHE. ML:1.0 0.000095811055 0.128 AML other m 2022-03-23T23:54:22.31
IV.CASP.HHE. ML:1.0 0.0000361 0.32 AML other m 2022-03-23T23:54:29.51
IV.CASP.HHN. ML:1.2 0.00005640000000000001 0.22 AML other m 2022-03-23T23:54:29.65
IV.RIBO.EHE.01 ML:1.2 0.00012086095999999999 0.1408 AML other m 2022-03-23T23:54:24.24
IV.RIBO.EHN.01 ML:1.3 0.00012959539 0.1408 AML other m 2022-03-23T23:54:24.36
IV.CASP.HNE. ML:1.4 0.000081365035 0.4992 AML other m 2022-03-23T23:54:29.22
IV.CASP.HNN. ML:1.1 0.000040681135 0.1536 AML other m 2022-03-23T23:54:29.36
IV.CSNT.HHE. ML:0.5 0.0000093088295 0.3328 AML other m 2022-03-23T23:54:30.91
IV.CSNT.HHN. ML:0.5 0.000012022941 0.1408 AML other m 2022-03-23T23:54:30.48
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