Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 10-11-2020 and time 07:50:17 (UTC) in region 1 km E Siena (SI)

A magnitude ML 1.5 earthquake occured in region: 1 km E Siena (SI), on

  • 10-11-2020 07:50:17 (UTC)
  • 10-11-2020 08:50:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3200, 11.3420 at 7 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.

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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
Siena SI 1 53903 53903
Sovicille SI 10 10116 64019
Monteroni d'Arbia SI 12 9088 73107
Monteriggioni SI 13 9810 82917
Castelnuovo Berardenga SI 13 9097 92014
Murlo SI 17 2389 94403
Castellina in Chianti SI 17 2859 97262
Gaiole in Chianti SI 18 2758 100020
Radda in Chianti SI 19 1613 101633

Municipalities with at least 50000 inhabitants

An earthquake occurred to
1 Km E of Siena (53903 inhabitants)
47 Km W of Arezzo (99543 inhabitants)
51 Km S of Scandicci (50609 inhabitants)
51 Km S of Firenze (382808 inhabitants)
65 Km N of Grosseto (82087 inhabitants)
65 Km SE of Prato (191150 inhabitants)
76 Km SE of Pistoia (90315 inhabitants)
87 Km E of Livorno (159219 inhabitants)
88 Km SE of Pisa (89158 inhabitants)
88 Km W of Perugia (166134 inhabitants)
89 Km SE of Lucca (89046 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 1.5 2020-11-10
07:50:17		 43.3203 11.3423 7 2021-02-26
14:56:13		 Bollettino Sismico Italiano INGV 85996671
Reviewed
Rev100 		ML 1.5 2020-11-10
07:50:17		 43.3148 11.3372 9 2020-11-10
08:23:15		 Sala Sismica INGV-Roma 84599031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-10 07:50:17 ± 0.1
Latitude 43.3203 ± 0.0036
Longitude 11.3423 ± 0.0099
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85996671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 797
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 285
Circular confidence region, given by single value of horizontal uncertainty (meter) 800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.72755
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 85996671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-23 16:22:11

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 84599031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-10 08:23:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2020-11-10T07:51:53.70 3.0 undecidable manual Sg 11.15 0
IV.CPTP.HHZ. 2020-11-10T07:51:50.70 3.0 undecidable manual P -0.85 0
X3.T1573.HHZ. 2020-11-10T07:51:39.14 3.0 undecidable manual P -2.71 0
IT.MCLF.HNZ. 2020-11-10T07:51:12.39 3.0 undecidable manual P 7.15 0
IV.LRP.EHZ. 2020-11-10T07:50:58.57 3.0 negative manual P 1.39 0
CH.BERNI.HHZ. 2020-11-10T07:50:51.81 3.0 positive manual P -9.99 0
IV.ZONE.HHZ. 2020-11-10T07:50:46.75 3.0 negative manual P -9.99 0
IV.NDIM.HNZ. 2020-11-10T07:50:43.56 3.0 undecidable manual Sn -0.97 0
IV.PARC.HHN. 2020-11-10T07:50:41.80 1.0 undecidable manual S 63 80.7636 50 -0.55 20
IV.MPPT.EHZ. 2020-11-10T07:50:40.20 0.6 undecidable manual S 344 73.5708 50 -0.2 44
IV.SFI.HNE. 2020-11-10T07:50:40.90 0.6 undecidable manual S 32 76.4679 50 -0.29 43
IV.CASP.HHZ. 2020-11-10T07:50:39.30 0.3 undecidable manual S 214 70.374 50 -0.25 65
IV.ASQU.HHN. 2020-11-10T07:50:37.40 1.0 undecidable manual S 34 63.8916 50 -0.43 21
IV.CRE.HHZ. 2020-11-10T07:50:36.70 0.3 undecidable manual S 56 59.1963 50 0.12 69
TV.SF01.EHN. 2020-11-10T07:50:35.19 0.6 undecidable manual S 162 59.1963 50 -1.39 28
IV.ARCI.HHE. 2020-11-10T07:50:34.80 0.3 undecidable manual S 168 53.1024 50 -0.14 69
IV.PARC.HHN. 2020-11-10T07:50:32.29 1.0 undecidable manual P 63 80.7636 50 0.46 20
IV.SBPO.HNZ. 2020-11-10T07:50:31.55 3.0 undecidable manual P -9.99 0
IV.SFI.HNE. 2020-11-10T07:50:31.60 0.6 undecidable manual P 32 76.4679 50 0.44 41
IV.MPPT.EHZ. 2020-11-10T07:50:30.82 0.3 undecidable manual P 344 73.5708 50 0.11 67
IV.ASQU.HHN. 2020-11-10T07:50:30.03 1.0 undecidable manual P 34 63.8916 50 0.81 19
IV.CASP.HHZ. 2020-11-10T07:50:30.59 0.3 undecidable manual P 214 70.374 50 0.38 64
TV.SF14.HHZ. 2020-11-10T07:50:29.56 0.1 undecidable manual P 161 66.4779 50 -0.06 91
IV.RINC.HHZ. 2020-11-10T07:50:29.95 0.1 undecidable manual P 19 66.2781 50 0.36 86
TV.SF13.HHN. 2020-11-10T07:50:28.67 0.1 undecidable manual P 158 59.9955 50 0.04 93
IV.CRE.HHZ. 2020-11-10T07:50:28.54 1.0 undecidable manual P 56 59.1963 50 0.04 23
TV.SF04.EHZ. 2020-11-10T07:50:28.61 0.1 undecidable manual P 154 59.5959 50 0.05 93
TV.SF01.EHN. 2020-11-10T07:50:28.50 1.0 undecidable manual P 162 59.1963 50 0 23
IV.CRMI.HHZ. 2020-11-10T07:50:28.96 0.6 undecidable manual P 331 60.2952 50 0.3 44
IV.ARCI.HHE. 2020-11-10T07:50:27.59 0.3 undecidable manual P 168 53.1024 50 0.04 71
IV.CAFI.HHE. 2020-11-10T07:50:27.28 0.6 undecidable manual P 89 50.3163 50 0.14 46
IV.FROS.CHZ. 2020-11-10T07:50:24.60 0.1 undecidable manual S 231 19.3695 110 -0.04 100
IV.CSNT.HHZ. 2020-11-10T07:50:23.58 0.1 undecidable manual S 346 17.4714 112 -0.43 92
IV.CSNT.HHZ. 2020-11-10T07:50:21.07 0.1 undecidable manual P 346 17.4714 112 -0.17 98
IV.FROS.CHZ. 2020-11-10T07:50:21.89 0.1 undecidable manual P 231 19.3695 110 0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHN. ML:1.3 0.00019440845000000002 0.1408 AML other m 2020-11-10T07:50:23.85
IV.CSNT.HHE. ML:1.5 0.00027566740000000003 1.8656 AML other m 2020-11-10T07:50:23.95
IV.FROS.CHE. ML:2.0 0.0008680425 0.2176 AML other m 2020-11-10T07:50:24.82
IV.FROS.CHN. ML:1.8 0.0004924576 0.2752 AML other m 2020-11-10T07:50:25.93
TV.SF04.EHN. ML:1.7 0.000100283695 0.1408 AML other m 2020-11-10T07:50:36.53
TV.SF04.EHE. ML:1.6 0.000079024495 1.84 AML other m 2020-11-10T07:50:38.96
IV.CRE.HHE. ML:1.5 0.000067834925 0.3776 AML other m 2020-11-10T07:50:39.23
IV.CRE.HHN. ML:1.4 0.000055437575000000004 0.4416 AML other m 2020-11-10T07:50:39.47
IV.CASP.HHN. ML:1.3 0.000033108489999999996 0.3008 AML other m 2020-11-10T07:50:41.56
IV.CASP.HHE. ML:1.2 0.00002311024 0.3776 AML other m 2020-11-10T07:50:41.94
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