Earthquake with magnitude of ML 1.1 on date 06-06-2021 and time 23:35:04 (Italy) in region 2 km E Piancastagnaio (SI)

A magnitude ML 1.1 earthquake occured in region: 2 km E Piancastagnaio (SI), on

  • 06-06-2021 21:35:04 (UTC)
  • 06-06-2021 23:35:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.856, 11.715 at 6 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
Piancastagnaio SI 2 4230 4230
Abbadia San Salvatore SI 4 6444 10674
Radicofani SI 6 1097 11771
Castell'Azzara GR 9 1476 13247
Santa Fiora GR 11 2622 15869
San Casciano dei Bagni SI 13 1632 17501
Proceno VT 14 557 18058
Arcidosso GR 14 4285 22343
Castel del Piano GR 15 4690 27033
Seggiano GR 15 961 27994
Acquapendente VT 17 5506 33500
Roccalbegna GR 18 1044 34544
Castiglione d'Orcia SI 19 2346 36890
Sorano GR 19 3428 40318
Cetona SI 19 2755 43073
Sarteano SI 20 4717 47790
Onano VT 20 995 48785
Semproniano GR 20 1059 49844

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km E of Grosseto (82087 inhabitants)
58 Km NW of Viterbo (67173 inhabitants)
60 Km SE of Siena (53903 inhabitants)
62 Km W of Perugia (166134 inhabitants)
69 Km S of Arezzo (99543 inhabitants)
81 Km W of Foligno (57155 inhabitants)
83 Km W of Terni (111501 inhabitants)
85 Km N of Civitavecchia (52991 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2021-06-06
21:35:04
42.8555 11.7148 6 2021-06-06
21:39:35
Sala Sismica INGV-Roma 90871941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-06 21:35:04 ± 0.15
Latitude 42.8555 ± 0.0063
Longitude 11.7148 ± 0.0074
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90871941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 714
Semi-minor axis of confidence ellipse (meter) 303
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 710
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 143
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.02968
Epicentral distance of station farthest from the epicenter (degree) 0.29678
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 90871941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-06 21:39:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARCI.HHZ. 2021-06-06T21:35:11.64 0.6 undecidable manual S 269 0.1754 108 -0.45 45
IV.MGAB.HHZ. 2021-06-06T21:35:11.20 0.6 positive manual P 79 0.2968 101 -0.49 44
TV.SF01.EHZ. 2021-06-06T21:35:10.06 0.6 undecidable manual S 249 0.1196 116 -0.02 50
IV.ARCI.HHZ. 2021-06-06T21:35:09.26 0.6 positive manual P 269 0.1754 108 0.17 48
IV.SACS.HHZ. 2021-06-06T21:35:08.59 1.0 undecidable manual P 93 0.143 112 0.19 24
TV.SF01.EHZ. 2021-06-06T21:35:08.13 0.6 undecidable manual P 249 0.1196 116 0.21 48
TV.SF14.HHZ. 2021-06-06T21:35:07.98 0.1 undecidable manual P 216 0.1241 115 -0.05 99
IV.MCIV.CHZ. 2021-06-06T21:35:07.26 0.1 positive manual P 200 0.0818 125 0.06 100
TV.SF03.EHZ. 2021-06-06T21:35:07.89 0.6 undecidable manual S 202 0.0567 135 -0.2 49
TV.SF11.HHZ. 2021-06-06T21:35:07.38 0.6 undecidable manual S 296 0.0297 153 -0.08 50
TV.SF04.EHZ. 2021-06-06T21:35:07.67 0.6 undecidable manual S 244 0.045 142 -0.1 50
TV.SF03.EHZ. 2021-06-06T21:35:06.87 0.1 undecidable manual P 202 0.0567 135 0.09 100
TV.SF11.HHZ. 2021-06-06T21:35:06.61 0.1 undecidable manual P 296 0.0297 153 0.2 98
TV.SF04.EHZ. 2021-06-06T21:35:06.76 0.6 undecidable manual P 244 0.045 142 0.17 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF04.EHE. ML:0 0.001252022 0.1024 AML other m 2021-06-06T21:35:07.77
TV.SF04.EHN. ML:0 0.0019035355 0.1408 AML other m 2021-06-06T21:35:07.70
IV.MCIV.CHE. ML:1.2 0.00024451975 0.2176 AML other m 2021-06-06T21:35:10.25
IV.MCIV.CHN. ML:1.2 0.00024087355 0.1536 AML other m 2021-06-06T21:35:08.94
TV.SF01.EHE. ML:1.6 0.00045517005 0.2048 AML other m 2021-06-06T21:35:10.18
TV.SF01.EHN. ML:1.5 0.0003565224 0.2944 AML other m 2021-06-06T21:35:11.24
IV.SACS.HHE. ML:0.8 6.6253835E-5 0.256 AML other m 2021-06-06T21:35:12.67
IV.SACS.HHN. ML:0.6 4.670665E-5 0.1664 AML other m 2021-06-06T21:35:11.69
IV.SACS.HNE. ML:1.1 0.000134683 0.6528 AML other m 2021-06-06T21:35:15.67
IV.SACS.HNN. ML:1 0.000100101605 0.5632 AML other m 2021-06-06T21:35:16.75
IV.ARCI.HNE. ML:1.1 0.000109701525 0.1664 AML other m 2021-06-06T21:35:13.53
IV.ARCI.HNN. ML:1.1 9.3162895E-5 0.2304 AML other m 2021-06-06T21:35:11.91
IV.ARCI.HHE. ML:1.2 0.000114213775 0.1792 AML other m 2021-06-06T21:35:13.53
IV.ARCI.HHN. ML:1.1 9.921036E-5 0.2688 AML other m 2021-06-06T21:35:13.79
IV.MGAB.HHE. ML:0.8 2.3644445E-5 0.1408 AML other m 2021-06-06T21:35:17.06
IV.MGAB.HHN. ML:0.9 3.2963265E-5 0.1536 AML other m 2021-06-06T21:35:17.58
IV.MGAB.HNE. ML:1.4 0.000103221125 0.704 AML other m 2021-06-06T21:35:14.96
IV.MGAB.HNN. ML:1.5 0.0001450003 0.8832 AML other m 2021-06-06T21:35:26.19
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