Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 24-06-2020 and time 16:21:21 (Italy) in region 2 km SW Montieri (GR)

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

  • 24-06-2020 14:21:21 (UTC)
  • 24-06-2020 16:21:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1210, 10.9990 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
Massa Marittima GR 12 8375 11482
Monterotondo Marittimo GR 12 1371 12853
Castelnuovo di Val di Cecina PI 12 2231 15084
Monticiano SI 15 1571 16655
Radicondoli SI 16 914 17569
Roccastrada GR 18 9199 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SW of Siena (53903 inhabitants)
41 Km N of Grosseto (82087 inhabitants)
73 Km S of Scandicci (50609 inhabitants)
74 Km SE of Livorno (159219 inhabitants)
75 Km S of Firenze (382808 inhabitants)
81 Km W of Arezzo (99543 inhabitants)
82 Km SE of Pisa (89158 inhabitants)
85 Km S of Prato (191150 inhabitants)
90 Km SE of Lucca (89046 inhabitants)
91 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 2020-06-24
14:21:21		 43.121 10.999 10 2020-06-24
14:37:57		 Sala Sismica INGV-Roma 80471441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-24 14:21:21 ± 0.13
Latitude 43.1210 ± 0.0072
Longitude 10.9990 ± 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 80471441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1162
Semi-minor axis of confidence ellipse (meter) 141
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 1160.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 80471441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-24 14:37:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.LRNO.HNZ. 2020-06-24T14:23:11.92 3.0 undecidable manual Sg 17.23 0
IV.ROSPO.HHZ. 2020-06-24T14:23:08.96 3.0 undecidable manual Sg 18.860001 0
IV.MBFT.HHZ. 2020-06-24T14:22:57.44 3.0 undecidable manual Pg 20.030001 0
CR.STON.BHZ. 2020-06-24T14:22:53.76 3.0 undecidable manual Pg 23.790001 0
IV.ESLN.HHZ. 2020-06-24T14:22:45.04 3.0 negative manual Pn -4.83 0
OX.CIMO.HHZ. 2020-06-24T14:22:34.20 3.0 undecidable manual Sn 2.22 0
IV.VVLD.HHZ. 2020-06-24T14:22:32.28 3.0 undecidable manual Sn -1.69 0
IX.STN3.HNZ.01 2020-06-24T14:22:30.14 3.0 undecidable manual Pn 5.7 0
IV.FOSV.EHZ. 2020-06-24T14:22:03.94 3.0 undecidable manual Sn -0.7 0
IV.ROSPO.HHZ. 2020-06-24T14:22:03.23 3.0 undecidable manual Pn -2.36 0
IV.CSNT.HHE. 2020-06-24T14:21:35.97 0.6 undecidable manual S 31 45.621 50 -0.41 45
GU.GSCL.HHZ. 2020-06-24T14:21:33.80 3.0 undecidable manual Sg -0.65 0
IV.CASP.HHZ. 2020-06-24T14:21:33.96 0.3 undecidable manual S 197 38.2284 50 -0.45 68
IV.IMOL.HNZ. 2020-06-24T14:21:31.62 3.0 negative manual P 0.14 0
IV.CSNT.HHE. 2020-06-24T14:21:30.39 0.3 undecidable manual P 31 45.621 50 0.32 69
IV.CASP.HHZ. 2020-06-24T14:21:29.16 0.1 undecidable manual P 197 38.2284 50 0.23 95
IV.RIBO.EHE.01 2020-06-24T14:21:28.87 0.3 undecidable manual S 169 19.4694 117 -0.12 75
IV.FROS.CHZ. 2020-06-24T14:21:27.60 0.3 undecidable manual S 52 16.0728 121 -0.37 72
IV.RIBO.EHE.01 2020-06-24T14:21:26.10 0.3 undecidable manual P 169 19.4694 117 0.29 72
IV.FROS.CHZ. 2020-06-24T14:21:25.43 0.1 undecidable manual P 52 16.0728 121 0.22 99
IV.TRIF.CHZ. 2020-06-24T14:21:25.44 0.3 undecidable manual S 265 7.7811 141 -0.34 73
IV.TRIF.CHZ. 2020-06-24T14:21:24.17 0.1 undecidable manual P 265 7.7811 141 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:1.0 0.0001285 0.12 AML other m 2020-06-24T14:21:25.53
IV.TRIF.CHE. ML:1.0 0.00016049999999999997 1.22 AML other m 2020-06-24T14:21:26.06
IV.FROS.CHE. ML:1.2 0.0001395 0.56 AML other m 2020-06-24T14:21:27.69
IV.FROS.CHN. ML:1.4 0.0002375 0.96 AML other m 2020-06-24T14:21:28.96
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