Earthquake with magnitude of ML 1.9 on date 08-10-2019 and time 09:07:30 (Italy) in region 3 km SE Buonconvento (SI)

A magnitude ML 1.9 earthquake occured in region: 3 km SE Buonconvento (SI), on

  • 08-10-2019 07:07:30 (UTC)
  • 08-10-2019 09:07:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.12, 11.51 at 3 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
Buonconvento SI 3 3173 3173
Montalcino SI 7 5093 8266
San Giovanni d'Asso SI 8 853 9119
San Quirico d'Orcia SI 10 2662 11781
Murlo SI 11 2389 14170
Asciano SI 14 7118 21288
Pienza SI 14 2107 23395
Monteroni d'Arbia SI 15 9088 32483
Trequanda SI 15 1254 33737
Castiglione d'Orcia SI 15 2346 36083

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SE of Siena (53903 inhabitants)
49 Km SW of Arezzo (99543 inhabitants)
51 Km NE of Grosseto (82087 inhabitants)
71 Km W of Perugia (166134 inhabitants)
76 Km S of Firenze (382808 inhabitants)
76 Km SE of Scandicci (50609 inhabitants)
91 Km SE of Prato (191150 inhabitants)
92 Km NW of Viterbo (67173 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
Rev 100 ML 1.9 2019-10-08
07:07:30
43.12 11.51 3 2019-10-08
07:27:24
Sala Sismica INGV-Roma 73131451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-08 07:07:30 ± 0.1
Latitude 43.12 ± 0.01
Longitude 11.51 ± 0.01
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73131451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 512
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 590
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.85166
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 20
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 73131451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-08 07:27:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.ORP.HGZ. 2019-10-08T07:09:04.92 3.0 undecidable manual Sg 11.57 0
IX.CSG3.HNZ.01 2019-10-08T07:08:52.84 3.0 undecidable manual Sn -8.84 0
IT.VNF1.HGZ. 2019-10-08T07:08:43.99 3.0 undecidable manual Sg 10.98 0
IV.CAGR.HHZ. 2019-10-08T07:08:41.88 3.0 undecidable manual Pn 0.17 0
IV.CPIS.HHZ. 2019-10-08T07:08:40.09 3.0 undecidable manual Sn -2.88 0
IV.EUCT.HNZ. 2019-10-08T07:08:32.97 3.0 undecidable manual Sn -4.49 0
IV.POFI.HNZ. 2019-10-08T07:08:28.35 3.0 undecidable manual Sn 2.7 0
IV.BRSN.EHZ. 2019-10-08T07:08:16.72 3.0 undecidable manual Sg 2.74 0
IT.ORP.HGZ. 2019-10-08T07:08:15.11 3.0 undecidable manual Pg 4.05 0
IV.RCAV.EHZ. 2019-10-08T07:08:12.19 3.0 undecidable manual Sn -2 0
IV.LPEL.HHZ. 2019-10-08T07:07:53.59 3.0 positive manual Pn -4.21 0
IV.PIEI.HHZ. 2019-10-08T07:07:47.68 0.3 positive manual P 60 0.8517 50 0.24 65
IV.RCAV.EHZ. 2019-10-08T07:07:46.52 3.0 undecidable manual Pn -2.54 0
IV.BRSN.HNZ. 2019-10-08T07:07:45.24 3.0 positive manual Pn -3.7 0
IV.PARC.HHZ. 2019-10-08T07:07:45.66 0.1 positive manual P 45 0.7473 50 0.01 94
IV.CSNT.HHZ. 2019-10-08T07:07:45.20 1.0 undecidable manual S 336 0.3903 94 -0.31 24
IV.ATPI.EHZ. 2019-10-08T07:07:45.21 0.6 negative manual P 62 0.7276 50 -0.09 46
IV.MAON.HHZ. 2019-10-08T07:07:45.51 0.1 undecidable manual P 202 0.7437 50 -0.08 92
IV.ASQU.HHZ. 2019-10-08T07:07:44.91 0.6 undecidable manual P 16 0.7078 50 -0.06 47
IV.ATMI.HHZ. 2019-10-08T07:07:43.42 0.6 positive manual P 68 0.5909 50 0.45 44
IV.BARO.EHZ. 2019-10-08T07:07:42.44 3.0 undecidable manual Pn 0.89 0
IV.RIBO.EHZ. 2019-10-08T07:07:42.60 3.0 undecidable manual S 0.3804 -2.52 0
TV.SF01.EHZ. 2019-10-08T07:07:42.46 1.0 undecidable manual S 173 0.3076 95 0.14 25
TV.SF13.HHZ. 2019-10-08T07:07:42.56 1.0 undecidable manual S 165 0.3085 95 0.19 25
IV.CASP.HHZ. 2019-10-08T07:07:42.69 0.1 positive manual P 236 0.5756 50 -0.03 97
TV.SF04.EHZ. 2019-10-08T07:07:41.10 0.6 undecidable manual S 159 0.3013 95 -0.99 38
IV.FROS.CHZ. 2019-10-08T07:07:40.80 0.3 undecidable manual S 290 0.2761 96 -0.31 72
IV.MGAB.HHZ. 2019-10-08T07:07:40.62 0.6 undecidable manual P 115 0.4829 50 -0.51 44
IV.TRIF.CHZ. 2019-10-08T07:07:40.42 0.6 undecidable manual P 270 0.4461 94 0.07 49
IV.SACS.HHZ. 2019-10-08T07:07:39.52 0.6 undecidable manual P 133 0.3948 94 0.29 47
IV.CSNT.HHZ. 2019-10-08T07:07:38.78 0.1 negative manual P 336 0.3903 94 -0.35 94
TV.SF03.EHE. 2019-10-08T07:07:38.24 0.6 undecidable manual P 158 0.339 95 0.26 48
TV.SF14.HHZ. 2019-10-08T07:07:38.15 0.1 undecidable manual P 168 0.3696 94 -0.52 91
IV.MCIV.CHZ. 2019-10-08T07:07:38.49 0.6 negative manual P 161 0.3588 94 0.06 50
TV.SF04.EHZ. 2019-10-08T07:07:37.49 0.1 positive manual P 159 0.3013 95 0.33 96
IV.FROS.CHZ. 2019-10-08T07:07:37.22 0.1 positive manual P 290 0.2761 96 0.62 88
TV.SF01.EHZ. 2019-10-08T07:07:37.26 0.3 positive manual P 173 0.3076 95 -0.03 76
TV.SF13.HHZ. 2019-10-08T07:07:37.44 0.1 undecidable manual P 165 0.3085 95 0.12 100
IV.ARCI.HHZ. 2019-10-08T07:07:36.71 0.1 positive manual P 186 0.2671 96 0.32 97
TV.SF11.HHZ. 2019-10-08T07:07:36.24 0.6 undecidable manual P 154 0.277 96 -0.37 48
IV.RIBO.EHZ. 2019-10-08T07:07:35.45 3.0 undecidable manual P 0.3804 -3.46 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHN. ML:2.3 0.001131 0.16 AML other m 2019-10-08T07:07:41.11
IV.FROS.CHE. ML:2.2 0.000845 1 AML other m 2019-10-08T07:07:42.17
IV.ARCI.HHN. ML:2.2 0.000896 1 AML other m 2019-10-08T07:07:42.69
TV.SF04.EHE. ML:2.3 0.000927 0.24 AML other m 2019-10-08T07:07:43.05
IV.ARCI.HHE. ML:1.9 0.000419 0.92 AML other m 2019-10-08T07:07:43.07
TV.SF04.EHN. ML:2.3 0.0009145 0.24 AML other m 2019-10-08T07:07:43.18
TV.SF01.EHE. ML:2.1 0.000523 0.24 AML other m 2019-10-08T07:07:43.42
TV.SF01.EHN. ML:2.3 0.00081 0.28 AML other m 2019-10-08T07:07:43.68
IV.CSNT.HHE. ML:1.8 0.0002215 0.18 AML other m 2019-10-08T07:07:46.10
IV.CSNT.HHN. ML:2.1 0.000431 0.46 AML other m 2019-10-08T07:07:46.12
IV.TRIF.CHE. ML:2.2 0.00039 1.76 AML other m 2019-10-08T07:07:46.03
IV.BARO.EHN. ML:4.6 0.04025 0.42 AML other m 2019-10-08T07:07:47.29
IV.SACS.HHE. ML:1.4 7.57E-5 0.54 AML other m 2019-10-08T07:07:47.58
IV.SACS.HHN. ML:1.4 7.585E-5 0.82 AML other m 2019-10-08T07:07:49.51
IV.TRIF.CHN. ML:2.2 0.000401 1.58 AML other m 2019-10-08T07:07:49.19
IV.PIEI.HHE. ML:1.8 7.27E-5 0.72 AML other m 2019-10-08T07:07:49.29
IV.CASP.HHE. ML:1.8 0.0001078 0.36 AML other m 2019-10-08T07:07:51.78
IV.MGAB.HHN. ML:1.7 0.0001315 0.68 AML other m 2019-10-08T07:07:51.30
IV.MGAB.HNN. ML:1.7 0.0001135 0.7 AML other m 2019-10-08T07:07:51.29
IV.MGAB.HNE. ML:1.6 9.1E-5 0.86 AML other m 2019-10-08T07:07:52.91
IV.CASP.HHN. ML:1.8 0.0001115 0.58 AML other m 2019-10-08T07:07:54.19
IV.MGAB.HHE. ML:1.6 9.21E-5 0.28 AML other m 2019-10-08T07:07:55.15
IV.ATMI.HHE. ML:2.4 0.000467 0.6 AML other m 2019-10-08T07:07:55.71
IV.ASQU.HHE. ML:1.7 7.7E-5 0.24 AML other m 2019-10-08T07:07:55.92
IV.ATMI.HHN. ML:2.3 0.0003515 0.32 AML other m 2019-10-08T07:07:57.37
IV.PARC.HHE. ML:1.9 0.00010005 0.58 AML other m 2019-10-08T07:08:00.23
IV.PARC.HHN. ML:2 0.0001365 0.64 AML other m 2019-10-08T07:08:00.58
IV.ASQU.HHN. ML:1.9 0.00012695 1.44 AML other m 2019-10-08T07:08:01.96
IV.ATPI.EHN. ML:1.8 9.0E-5 0.72 AML other m 2019-10-08T07:08:02.41
IV.ATPI.EHE. ML:1.8 9.53E-5 0.42 AML other m 2019-10-08T07:08:02.44
IV.PIEI.HHN. ML:1.7 4.94E-5 1.06 AML other m 2019-10-08T07:08:07.10
IV.BARO.HNN. ML:2.9 0.0007965 0.14 AML other m 2019-10-08T07:08:22.96
IV.BARO.HNE. ML:3.2 0.001365 1.16 AML other m 2019-10-08T07:08:23.94
IV.BARO.EHE. ML:4.6 0.03825 1.58 AML other m 2019-10-08T07:08:24.07
IV.EUCT.HNE. ML:3.8 0.000759 0.3 AML other m 2019-10-08T07:08:38.49
IV.EUCT.HNN. ML:3.7 0.000693 0.06 AML other m 2019-10-08T07:08:38.50
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