Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 17-08-2022 and time 19:21:53 (UTC) in region 2 km E Montieri (GR)

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

  • 17-08-2022 19:21:53 (UTC)
  • 17-08-2022 21:21:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1220, 11.0440 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 5 1903 3107
Monticiano SI 11 1571 4678
Castelnuovo di Val di Cecina PI 15 2231 6909
Massa Marittima GR 15 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
32 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)
78 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)
92 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 2022-08-17
19:21:53		 43.1223 11.044 10 2022-08-17
19:30:06		 Sala Sismica INGV-Roma 108659611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-17 19:21:53 ± 0.16
Latitude 43.1223 ± 0.0072
Longitude 11.0440 ± 0.0136
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 108659611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1193
Semi-minor axis of confidence ellipse (meter) 466
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 298
Circular confidence region, given by single value of horizontal uncertainty (meter) 1190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 178
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42718
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 108659611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-17 19:30:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.BERNI.HHZ. 2022-08-17T19:23:29.78 3.0 undecidable manual Sn -0.03 0
IV.ACATE.EHZ. 2022-08-17T19:23:29.62 3.0 negative manual Pn -2.65 0
GU.MGRO.HHZ. 2022-08-17T19:23:18.55 3.0 undecidable manual Sg 9.14 0
IV.CMPR.HHZ. 2022-08-17T19:23:14.62 3.0 undecidable manual Pg 15.34 0
OX.PLRO.HHZ. 2022-08-17T19:22:53.13 3.0 negative manual Pn 0.19 0
IV.BRMO.HHZ. 2022-08-17T19:22:51.23 3.0 positive manual Pn 2.88 0
IV.SAMA.EHZ. 2022-08-17T19:22:48.00 3.0 undecidable manual Sn -1.03 0
GU.CANO.HHZ. 2022-08-17T19:22:39.62 3.0 undecidable manual Pg 5.91 0
GU.GSCL.HHZ. 2022-08-17T19:22:38.48 3.0 undecidable manual S -0.12 0
IV.FOSV.EHZ. 2022-08-17T19:22:20.73 3.0 undecidable manual P 2.19 0
IV.FRON.EHZ. 2022-08-17T19:22:18.72 3.0 negative manual P -0.2 0
IV.ARCI.HHZ. 2022-08-17T19:22:08.79 0.3 undecidable manual S 130 46.1205 50 -0.22 69
IV.CASP.HHZ. 2022-08-17T19:22:06.66 0.3 undecidable manual S 202 39.5271 50 -0.61 63
IV.MALA0.EHZ. 2022-08-17T19:22:06.61 0.3 undecidable manual S 110 37.1295 50 -0.02 73
IV.ARCI.HHZ. 2022-08-17T19:22:03.00 0.1 undecidable manual P 130 46.1205 50 0.36 89
IV.OSSC.HHZ. 2022-08-17T19:22:02.89 0.3 undecidable manual P 20 47.4192 50 0.05 71
IV.RIBO.EHZ.01 2022-08-17T19:22:01.28 0.3 undecidable manual S 179 19.2696 117 -0.12 74
IV.CASP.HHZ. 2022-08-17T19:22:01.79 0.1 undecidable manual P 202 39.5271 50 0.16 94
IV.MALA0.EHZ. 2022-08-17T19:22:01.36 0.1 undecidable manual P 110 37.1295 50 0.1 96
IV.FROS.CHZ. 2022-08-17T19:21:59.20 0.3 undecidable manual S 43 13.2756 126 -0.44 70
IV.RIBO.EHZ.01 2022-08-17T19:21:58.50 0.1 undecidable manual P 179 19.2696 117 0.25 96
IV.FROS.CHZ. 2022-08-17T19:21:57.31 0.1 undecidable manual P 43 13.2756 126 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHE. ML:1.2 0.00018405399999999998 0.1536 AML other m 2022-08-17T19:21:59.61
IV.FROS.CHN. ML:1.4 0.00026890645 0.256 AML other m 2022-08-17T19:21:59.82
IV.RIBO.EHN.01 ML:1.6 0.000284 0.14 AML other m 2022-08-17T19:22:01.49
IV.RIBO.EHE.01 ML:1.5 0.00023267454999999999 0.1664 AML other m 2022-08-17T19:22:01.41
IV.CASP.HHE. ML:1.3 0.000063750905 0.1024 AML other m 2022-08-17T19:22:06.96
IV.CASP.HHN. ML:1.4 0.00008781753 0.1024 AML other m 2022-08-17T19:22:07.01
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