Earthquake with magnitude of ML 1.4 on date 13-09-2023 and time 04:40:07 (Italy) in region 2 km SE Montieri (GR)

A magnitude ML 1.4 earthquake occured in region: 2 km SE Montieri (GR), on

  • 13-09-2023 02:40:07 (UTC)
  • 13-09-2023 04:40:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1220, 11.0360 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 2 1204 1204
Chiusdino SI 6 1903 3107
Monticiano SI 12 1571 4678
Castelnuovo di Val di Cecina PI 14 2231 6909
Massa Marittima GR 14 8375 15284
Monterotondo Marittimo GR 15 1371 16655
Radicondoli SI 16 914 17569
Roccastrada GR 16 9199 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Siena (53903 inhabitants)
41 Km N of Grosseto (82087 inhabitants)
72 Km S of Scandicci (50609 inhabitants)
74 Km S of Firenze (382808 inhabitants)
76 Km SE of Livorno (159219 inhabitants)
79 Km W of Arezzo (99543 inhabitants)
84 Km SE of Pisa (89158 inhabitants)
85 Km S of Prato (191150 inhabitants)
91 Km S of Pistoia (90315 inhabitants)
91 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 2023-09-13
02:40:07
43.122 11.0357 10 2023-09-13
03:31:20
Sala Sismica INGV-Roma 121013131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-13 02:40:07 ± 0.11
Latitude 43.1220 ± 0.0054
Longitude 11.0357 ± 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 121013131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 846
Semi-minor axis of confidence ellipse (meter) 607
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.67449
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 121013131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-13 03:31:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHN. 2023-09-13T02:40:30.15 0.3 undecidable manual S 357 74.8695 50 0.24 65
IV.OSSC.HHZ. 2023-09-13T02:40:22.16 0.6 undecidable manual S 21 47.619 50 -0.5 43
IV.CSNT.HHZ. 2023-09-13T02:40:21.17 0.3 undecidable manual S 28 44.0226 50 -0.52 65
IV.CRMI.HHN. 2023-09-13T02:40:21.32 0.1 undecidable manual P 357 74.8695 50 1 66
IV.MALA2.EHN. 2023-09-13T02:40:19.87 0.6 undecidable manual S 110 38.2284 50 -0.26 46
IV.MALA0.EHZ. 2023-09-13T02:40:19.76 0.6 undecidable manual S 110 37.7289 50 -0.25 46
IV.MALA5.EHZ. 2023-09-13T02:40:19.91 0.3 undecidable manual S 109 38.0286 50 -0.18 70
IV.CASP.HHZ. 2023-09-13T02:40:19.84 0.6 undecidable manual S 201 39.2274 50 -0.57 42
IV.LOCA.HNZ. 2023-09-13T02:40:16.55 0.3 undecidable manual S 42 27.4503 50 -0.71 62
IV.OSSC.HHZ. 2023-09-13T02:40:16.28 0.1 undecidable manual P 21 47.619 50 0.15 93
IV.ARCI.HHZ. 2023-09-13T02:40:16.50 3.0 negative manual P -0.06 0
IV.CASP.HHZ. 2023-09-13T02:40:15.08 1.0 undecidable manual P 201 39.2274 50 0.25 23
IV.CSNT.HHZ. 2023-09-13T02:40:15.68 0.1 undecidable manual P 28 44.0226 50 0.11 94
IV.MALA5.EHZ. 2023-09-13T02:40:14.92 0.1 undecidable manual P 109 38.0286 50 0.28 92
IV.RIBO.EHZ.01 2023-09-13T02:40:14.35 0.6 undecidable manual S 177 19.1697 117 -0.35 47
IV.MALA2.EHN. 2023-09-13T02:40:14.96 0.1 undecidable manual P 110 38.2284 50 0.29 92
IV.MALA0.EHZ. 2023-09-13T02:40:14.87 0.1 undecidable manual P 110 37.7289 50 0.27 92
IV.FROS.CHZ. 2023-09-13T02:40:12.76 0.6 undecidable manual S 45 13.7751 126 -0.32 47
IV.LOCA.HNZ. 2023-09-13T02:40:12.98 0.1 undecidable manual P 42 27.4503 50 -0.03 98
IV.RIBO.EHZ.01 2023-09-13T02:40:11.84 0.1 negative manual P 177 19.1697 117 0.31 94
IV.TRIF.CHZ. 2023-09-13T02:40:11.40 0.6 undecidable manual S 266 10.7781 132 -0.88 39
IV.TRIF.CHZ. 2023-09-13T02:40:10.04 0.1 negative manual P 266 10.7781 132 -0.1 100
IV.FROS.CHZ. 2023-09-13T02:40:10.81 0.1 positive manual P 45 13.7751 126 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:1.5 0.00041700000000000005 0.1 AML other m 2023-09-13T02:40:11.59
IV.TRIF.CHE. ML:1.6 0.00048499999999999997 0.12 AML other m 2023-09-13T02:40:11.78
IV.FROS.CHE. ML:1.4 0.0002615 1.38 AML other m 2023-09-13T02:40:12.87
IV.FROS.CHN. ML:1.4 0.00025550000000000003 0.18 AML other m 2023-09-13T02:40:13.09
IV.RIBO.EHN.01 ML:1.6 0.0003015 1.36 AML other m 2023-09-13T02:40:14.25
IV.RIBO.EHE.01 ML:1.5 0.0002525 1.5 AML other m 2023-09-13T02:40:15.87
IV.CASP.HHE. ML:1.2 0.00005365 0.36 AML other m 2023-09-13T02:40:20.24
IV.CASP.HHN. ML:1.4 0.00010225 0.22 AML other m 2023-09-13T02:40:20.40
IV.CASP.HNE. ML:1.6 0.00014995944999999998 1.08 AML other m 2023-09-13T02:40:32.12
IV.CASP.HNN. ML:1.6 0.000123254515 1 AML other m 2023-09-13T02:40:26.19
IV.CSNT.HHE. ML:0.7 0.000015775434999999997 0.24 AML other m 2023-09-13T02:40:21.89
IV.CSNT.HHN. ML:0.8 0.000018594825 0.24 AML other m 2023-09-13T02:40:21.68
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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