Earthquake with magnitude of ML 1.2 on date 17-02-2020 and time 00:19:06 (Italy) in region 4 km E Piancastagnaio (SI)

A magnitude ML 1.2 earthquake occured in region: 4 km E Piancastagnaio (SI), on

  • 16-02-2020 23:19:06 (UTC)
  • 17-02-2020 00:19:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.85, 11.75 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 4 4230 4230
Radicofani SI 5 1097 5327
Abbadia San Salvatore SI 6 6444 11771
Castell'Azzara GR 10 1476 13247
San Casciano dei Bagni SI 11 1632 14879
Proceno VT 13 557 15436
Santa Fiora GR 13 2622 18058
Acquapendente VT 16 5506 23564
Arcidosso GR 17 4285 27849
Seggiano GR 17 961 28810
Castel del Piano GR 18 4690 33500
Cetona SI 18 2755 36255
Sarteano SI 18 4717 40972
Onano VT 19 995 41967
Allerona TR 19 1794 43761
Sorano GR 19 3428 47189
Castiglione d'Orcia SI 20 2346 49535

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km E of Grosseto (82087 inhabitants)
57 Km NW of Viterbo (67173 inhabitants)
60 Km W of Perugia (166134 inhabitants)
62 Km SE of Siena (53903 inhabitants)
69 Km S of Arezzo (99543 inhabitants)
79 Km W of Foligno (57155 inhabitants)
81 Km W of Terni (111501 inhabitants)
85 Km N of Civitavecchia (52991 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
Bulletin
Rev1000
ML 1.2 2020-02-16
23:19:06
42.85 11.75 10 2020-07-18
21:08:41
Bollettino Sismico Italiano INGV 80499421
Reviewed
Rev100
ML 1.2 2020-02-16
23:19:07
42.85 11.74 8 2020-02-16
23:27:13
Sala Sismica INGV-Roma 76579911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-16 23:19:06 ± 0.16
Latitude 42.85 ± 0.01
Longitude 11.75 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80499421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 824
Semi-minor axis of confidence ellipse (meter) 672
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 186
Circular confidence region, given by single value of horizontal uncertainty (meter) 820
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.27429
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 80499421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-06-25 16:22:17

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76579911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-16 23:27:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARCI.HHZ. 2020-02-16T23:19:14.90 0.3 undecidable manual S 270 0.1979 114 -0.16 72
TV.SF01.EHZ. 2020-02-16T23:19:13.17 0.1 undecidable manual S 253 0.1403 122 0.09 98
IV.SACS.HHZ. 2020-02-16T23:19:13.17 0.3 undecidable manual S 92 0.1196 126 0.74 61
TV.SF14.HHE. 2020-02-16T23:19:12.93 0.1 undecidable manual S 224 0.1376 123 -0.07 99
IV.MGAB.HHZ. 2020-02-16T23:19:12.16 0.3 undecidable manual P 78 0.2743 50 -0.8 58
IV.LATE.HHZ. 2020-02-16T23:19:12.56 0.3 undecidable manual P 170 0.2437 50 0.13 72
IV.MCIV.CHZ. 2020-02-16T23:19:11.22 0.3 undecidable manual S 214 0.0908 134 -0.36 71
TV.SF13.HHE. 2020-02-16T23:19:11.75 0.1 undecidable manual S 249 0.0989 132 -0.06 100
IV.ARCI.HHZ. 2020-02-16T23:19:11.89 0.1 undecidable manual P 270 0.1979 114 0.37 92
TV.SF03.EHN. 2020-02-16T23:19:10.78 0.1 undecidable manual S 221 0.0674 143 -0.2 98
TV.SF14.HHE. 2020-02-16T23:19:10.43 0.1 undecidable manual P 224 0.1376 123 0.1 98
TV.SF11.HHE. 2020-02-16T23:19:10.28 0.3 undecidable manual S 287 0.0513 150 -0.35 71
TV.SF01.EHZ. 2020-02-16T23:19:10.73 0.1 undecidable manual P 253 0.1403 122 0.35 93
TV.SF04.EHZ. 2020-02-16T23:19:10.73 0.1 undecidable manual S 254 0.0657 144 -0.2 98
TV.SF04.EHZ. 2020-02-16T23:19:09.22 0.1 undecidable manual P 254 0.0657 144 0.08 100
TV.SF13.HHE. 2020-02-16T23:19:09.88 0.1 undecidable manual P 249 0.0989 132 0.23 96
TV.SF03.EHN. 2020-02-16T23:19:09.25 0.1 undecidable manual P 221 0.0674 143 0.08 100
IV.MCIV.CHZ. 2020-02-16T23:19:09.60 0.1 positive manual P 214 0.0908 134 0.09 99
TV.SF11.HHE. 2020-02-16T23:19:09.02 0.3 undecidable manual P 287 0.0513 150 0.06 76
IV.SACS.HHZ. 2020-02-16T23:19:09.65 0.1 undecidable manual P 92 0.1196 126 -0.36 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF04.EHN. ML:1.5 0.0004915 0.3 AML other m 2020-02-16T23:19:11.17
TV.SF04.EHE. ML:1.5 0.0004495 0.22 AML other m 2020-02-16T23:19:11.33
IV.MCIV.CHE. ML:1.3 0.000274 0.14 AML other m 2020-02-16T23:19:11.90
IV.MCIV.CHN. ML:1.5 0.0003965 0.86 AML other m 2020-02-16T23:19:12.92
IV.SACS.HHE. ML:1.2 0.0001645 0.26 AML other m 2020-02-16T23:19:13.58
IV.SACS.HHN. ML:1 0.0001036 1.28 AML other m 2020-02-16T23:19:13.70
IV.MGAB.HHE. ML:0.9 3.435E-5 0.84 AML other m 2020-02-16T23:19:18.37
IV.MGAB.HHN. ML:0.9 4.23E-5 1.18 AML other m 2020-02-16T23:19:20.38
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download