Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 06-07-2024 and time 06:30:21 (UTC) in region 1 km W Piancastagnaio (SI)

A magnitude ML 0.9 earthquake occured in region: 1 km W Piancastagnaio (SI), on

  • 06-07-2024 06:30:21 (UTC)
  • 06-07-2024 08:30:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8490, 11.6860 at 5 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
Piancastagnaio SI 1 4230 4230
Abbadia San Salvatore SI 4 6444 10674
Santa Fiora GR 8 2622 13296
Castell'Azzara GR 8 1476 14772
Radicofani SI 9 1097 15869
Arcidosso GR 12 4285 20154
Castel del Piano GR 13 4690 24844
Seggiano GR 14 961 25805
Proceno VT 16 557 26362
San Casciano dei Bagni SI 16 1632 27994
Roccalbegna GR 16 1044 29038
Semproniano GR 18 1059 30097
Castiglione d'Orcia SI 18 2346 32443
Sorano GR 19 3428 35871
Acquapendente VT 19 5506 41377

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km E of Grosseto (82087 inhabitants)
59 Km NW of Viterbo (67173 inhabitants)
60 Km SE of Siena (53903 inhabitants)
64 Km W of Perugia (166134 inhabitants)
71 Km S of Arezzo (99543 inhabitants)
84 Km W of Foligno (57155 inhabitants)
85 Km N of Civitavecchia (52991 inhabitants)
85 Km W of Terni (111501 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 0.9 2024-07-06
06:30:21		 42.8487 11.6863 5 2024-07-06
06:46:07		 Sala Sismica INGV-Roma 129542891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-07-06 06:30:21 ± 0.17
Latitude 42.8487 ± 0.0054
Longitude 11.6863 ± 0.0049
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 129542891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 505
Semi-minor axis of confidence ellipse (meter) 292
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25001
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 129542891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-07-06 06:46:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HHZ. 2024-07-06T06:31:24.12 3.0 undecidable manual Sg 5.6 0
IV.FDMO.HHZ. 2024-07-06T06:30:42.17 3.0 positive manual P 0.18 0
IV.CRE.HHZ. 2024-07-06T06:30:36.39 3.0 undecidable manual P -0.49 0
IV.OSSC.HHZ. 2024-07-06T06:30:35.51 3.0 negative manual P -0.62 0
IV.LATE.HHZ. 2024-07-06T06:30:31.14 0.6 undecidable manual S 160 27.75 100 -0.46 45
IV.SACS.HHZ. 2024-07-06T06:30:28.44 0.6 undecidable manual S 90 18.1707 105 0.09 50
IV.LATE.HHZ. 2024-07-06T06:30:27.43 0.6 positive manual P 160 27.75 100 -0.04 49
IV.ARCI.HHZ. 2024-07-06T06:30:27.97 0.6 undecidable manual S 271 17.1717 106 -0.04 50
IV.ARCI.HHZ. 2024-07-06T06:30:25.39 0.6 negative manual P 271 17.1717 106 0 51
IV.SACS.HHZ. 2024-07-06T06:30:25.71 1.0 positive manual P 90 18.1707 105 0.12 25
IV.MCIV.CHZ. 2024-07-06T06:30:25.25 0.6 undecidable manual S 186 7.7811 122 0.22 49
IV.MCIV.CHZ. 2024-07-06T06:30:23.82 0.1 positive manual P 186 7.7811 122 0.15 100
TV.SF11.HHZ. 2024-07-06T06:30:23.55 0.6 undecidable manual S 345 2.2977 155 -0.16 50
TV.SF11.HHZ. 2024-07-06T06:30:22.89 0.6 undecidable manual P 345 2.2977 155 -0.02 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HHN. ML:0.8 0.0000657 1.32 AML other m 2024-07-06T06:30:28.99
IV.ARCI.HHE. ML:0.9 0.0000759 0.16 AML other m 2024-07-06T06:30:29.12
IV.SACS.HHE. ML:0.5 0.0000282 1.06 AML other m 2024-07-06T06:30:29.34
IV.SACS.HHN. ML:0.5 0.0000316 1.04 AML other m 2024-07-06T06:30:30.74
IV.LATE.HHN. ML:1.2 0.0000882 0.2 AML other m 2024-07-06T06:30:32.57
IV.LATE.HHE. ML:1.1 0.00006745 0.14 AML other m 2024-07-06T06:30:33.44
TV.SF11.HHE. ML:0.0 0.0010577620999999999 0.14 AML other m 2024-07-06T06:30:23.62
TV.SF11.HHN. ML:0.0 0.00068491585 0.2 AML other m 2024-07-06T06:30:25.06
IV.ARCI.HNE. ML:0.9 0.00007676012 0.28 AML other m 2024-07-06T06:30:28.19
IV.ARCI.HNN. ML:0.7 0.000049806210000000005 0.18 AML other m 2024-07-06T06:30:28.00
IV.SACS.HNE. ML:0.9 0.00006845931 0.39 AML other m 2024-07-06T06:30:29.24
IV.SACS.HNN. ML:1.1 0.00010523847 2.57 AML other m 2024-07-06T06:30:28.73
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