Earthquake with magnitude of ML 1.4 on date 29-06-2020 and time 20:15:00 (Italy) in region 4 km NE Montalcino (SI)

A magnitude ML 1.4 earthquake occured in region: 4 km NE Montalcino (SI), on

  • 29-06-2020 18:15:00 (UTC)
  • 29-06-2020 20:15:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1, 11.52 at 1 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
Montalcino SI 4 5093 5093
Buonconvento SI 6 3173 8266
San Quirico d'Orcia SI 8 2662 10928
San Giovanni d'Asso SI 9 853 11781
Castiglione d'Orcia SI 13 2346 14127
Murlo SI 13 2389 16516
Pienza SI 14 2107 18623
Asciano SI 16 7118 25741
Trequanda SI 16 1254 26995
Monteroni d'Arbia SI 17 9088 36083
Seggiano GR 19 961 37044

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SE of Siena (53903 inhabitants)
50 Km NE of Grosseto (82087 inhabitants)
51 Km SW of Arezzo (99543 inhabitants)
71 Km W of Perugia (166134 inhabitants)
78 Km S of Firenze (382808 inhabitants)
79 Km SE of Scandicci (50609 inhabitants)
89 Km NW of Viterbo (67173 inhabitants)
94 Km SE of Prato (191150 inhabitants)
98 Km W of Foligno (57155 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.4 2020-06-29
18:15:00
43.1 11.52 1 2020-06-29
18:25:30
Sala Sismica INGV-Roma 80625361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-29 18:15:00 ± 0.15
Latitude 43.10 ± 0.01
Longitude 11.52 ± 0.01
Depth (km) 1 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80625361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 973
Semi-minor axis of confidence ellipse (meter) 775
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 970
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.25631
Epicentral distance of station farthest from the epicenter (degree) 0.60344
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 80625361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-29 18:25:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATMC.EHN. 2020-06-29T18:15:22.81 0.3 undecidable manual S 54 0.6034 50 0.1 70
IV.CSNT.HHZ. 2020-06-29T18:15:15.59 0.3 undecidable manual S 336 0.411 91 -0.39 69
IV.RIBO.EHZ.01 2020-06-29T18:15:14.67 0.3 undecidable manual S 247 0.3741 91 0.11 73
IV.ATMC.EHN. 2020-06-29T18:15:13.04 0.6 undecidable manual P 54 0.6034 50 -0.14 46
IV.ATVA.EHE. 2020-06-29T18:15:12.30 1.0 undecidable manual P 72 0.5891 50 -0.62 21
IV.FROS.CHZ. 2020-06-29T18:15:11.00 0.3 undecidable manual S 293 0.286 92 -0.18 74
TV.SF04.EHZ. 2020-06-29T18:15:10.41 0.1 undecidable manual S 158 0.2806 92 -0.57 89
TV.SF13.HHE. 2020-06-29T18:15:10.58 0.1 undecidable manual S 165 0.2878 92 -0.67 86
TV.SF01.EHZ. 2020-06-29T18:15:10.53 0.1 undecidable manual S 173 0.2869 92 -0.66 86
TV.SF11.HHE. 2020-06-29T18:15:09.72 0.3 undecidable manual S 152 0.2563 92 -0.32 72
TV.SF14.HHE. 2020-06-29T18:15:08.06 0.1 undecidable manual P 168 0.3489 92 0.16 97
IV.RIBO.EHZ.01 2020-06-29T18:15:08.48 0.1 undecidable manual P 247 0.3741 91 0.01 100
IV.CSNT.HHZ. 2020-06-29T18:15:08.83 0.1 undecidable manual P 336 0.411 91 -0.46 90
IV.MCIV.CHZ. 2020-06-29T18:15:07.85 0.1 undecidable manual P 160 0.3381 92 0.17 97
TV.SF03.EHN. 2020-06-29T18:15:07.58 0.1 undecidable manual P 157 0.3184 92 0.34 94
TV.SF13.HHE. 2020-06-29T18:15:07.05 0.1 undecidable manual P 165 0.2878 92 0.49 92
TV.SF11.HHE. 2020-06-29T18:15:06.45 0.1 undecidable manual P 152 0.2563 92 0.59 89
TV.SF01.EHZ. 2020-06-29T18:15:06.83 0.1 undecidable manual P 173 0.2869 92 0.31 96
TV.SF04.EHZ. 2020-06-29T18:15:06.94 0.1 positive manual P 158 0.2806 92 0.54 91
IV.FROS.CHZ. 2020-06-29T18:15:06.95 0.3 undecidable manual P 293 0.286 92 0.43 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF04.EHN. ML:1.5 0.000164 0.16 AML other m 2020-06-29T18:15:10.96
TV.SF04.EHE. ML:1.6 0.000211 0.64 AML other m 2020-06-29T18:15:12.59
TV.SF01.EHN. ML:1.4 0.0001275 1.22 AML other m 2020-06-29T18:15:12.11
TV.SF01.EHE. ML:1.4 0.00011765 0.42 AML other m 2020-06-29T18:15:12.69
IV.CSNT.HHN. ML:1.2 4.555E-5 0.36 AML other m 2020-06-29T18:15:15.73
IV.CSNT.HHE. ML:1.3 6.585E-5 0.34 AML other m 2020-06-29T18:15:15.71
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