Earthquake with magnitude of ML 1.6 on date 11-11-2021 and time 20:47:06 (Italy) in region 6 km N Radda in Chianti (SI)

A magnitude ML 1.6 earthquake occured in region: 6 km N Radda in Chianti (SI), on

  • 11-11-2021 19:47:06 (UTC)
  • 11-11-2021 20:47:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.543, 11.378 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
Radda in Chianti SI 6 1613 1613
Greve in Chianti FI 7 13862 15475
Cavriglia AR 9 9614 25089
Gaiole in Chianti SI 9 2758 27847
Castellina in Chianti SI 11 2859 30706
San Giovanni Valdarno AR 13 17018 47724
Figline e Incisa Valdarno FI 15 23505 71229
Montevarchi AR 16 24378 95607
Barberino Val d'Elsa FI 17 4386 99993
Tavarnelle Val di Pesa FI 17 7800 107793
Castelfranco Piandiscò AR 17 9632 117425
Terranuova Bracciolini AR 17 12346 129771
Impruneta FI 19 14615 144386

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Siena (53903 inhabitants)
27 Km SE of Firenze (382808 inhabitants)
29 Km SE of Scandicci (50609 inhabitants)
42 Km W of Arezzo (99543 inhabitants)
44 Km SE of Prato (191150 inhabitants)
57 Km SE of Pistoia (90315 inhabitants)
78 Km E of Lucca (89046 inhabitants)
81 Km E of Pisa (89158 inhabitants)
86 Km E of Livorno (159219 inhabitants)
90 Km N of Grosseto (82087 inhabitants)
92 Km SW of Faenza (58541 inhabitants)
93 Km SW of Forlì (117913 inhabitants)
94 Km SW of Imola (69797 inhabitants)
95 Km NW of Perugia (166134 inhabitants)
96 Km SW of Cesena (96758 inhabitants)
98 Km E of Viareggio (62467 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 1.6 2021-11-11
19:47:06
43.5427 11.3778 7 2021-11-11
19:55:22
Sala Sismica INGV-Roma 97401251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-11 19:47:06 ± 0.08
Latitude 43.5427 ± 0.0036
Longitude 11.3778 ± 0.0087
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97401251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 626
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.51171
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 97401251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-11 19:55:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OT.OT17.EHZ. 2021-11-11T19:48:40.02 3.0 undecidable manual Sg 18.040001 0
IV.VULT.HHZ. 2021-11-11T19:48:08.62 3.0 positive manual Pg 15.79 0
IX.SCL3.EHZ.02 2021-11-11T19:48:03.37 3.0 positive manual Pg 8.42 0
IX.CMP3.EHZ.02 2021-11-11T19:47:57.61 3.0 positive manual Pn 4.74 0
FR.SAOF.HHZ.00 2021-11-11T19:47:51.79 3.0 undecidable manual Pg 7.97 0
IV.BARO.EHZ. 2021-11-11T19:47:40.36 3.0 undecidable manual Sn -2.89 0
GU.GENL.EHZ. 2021-11-11T19:47:38.74 3.0 positive manual Pg 8.39 0
IV.SACR.HNZ. 2021-11-11T19:47:37.24 3.0 undecidable manual Pn -5.01 0
IV.GIUL.HHZ. 2021-11-11T19:47:28.35 3.0 undecidable manual Pn -4.94 0
IV.FREG.EHZ. 2021-11-11T19:47:25.93 3.0 undecidable manual Pn -1.17 0
IV.SEI.HHZ. 2021-11-11T19:47:25.45 0.3 undecidable manual S 358 0.5117 50 0.36 65
IV.CAFI.HHZ. 2021-11-11T19:47:23.78 0.1 undecidable manual S 116 0.4775 50 -0.3 89
IV.CASP.HHZ. 2021-11-11T19:47:23.27 3.0 undecidable manual Pg 4.37 0
IV.CRE.HHZ. 2021-11-11T19:47:22.57 0.1 undecidable manual S 79 0.4227 50 0.12 93
IV.MNTV.EHZ. 2021-11-11T19:47:21.49 3.0 undecidable manual Pg 1.7 0
IV.BOSL.HHZ. 2021-11-11T19:47:21.12 0.1 undecidable manual S 360 0.3885 50 -0.32 90
IV.ASQU.HHZ. 2021-11-11T19:47:21.57 0.1 undecidable manual S 49 0.3912 50 0.04 95
IV.RUFI.EHZ. 2021-11-11T19:47:18.46 0.1 undecidable manual S 18 0.3103 101 -0.17 94
IV.SEI.HHZ. 2021-11-11T19:47:17.47 0.3 undecidable manual P 358 0.5117 50 0.25 67
IV.PP3.EHZ. 2021-11-11T19:47:17.75 3.0 undecidable manual Pg 2.16 0
IV.CAFI.HHZ. 2021-11-11T19:47:16.69 0.1 undecidable manual P 116 0.4775 50 0.05 94
IV.CRE.HHZ. 2021-11-11T19:47:16.10 0.3 undecidable manual P 79 0.4227 50 0.4 66
IV.MOCL.EHZ. 2021-11-11T19:47:16.56 3.0 undecidable manual Sn -2.71 0
IV.ASQU.HHZ. 2021-11-11T19:47:15.11 0.1 undecidable manual P 49 0.3912 50 -0.05 95
IV.FROS.CHZ. 2021-11-11T19:47:14.23 3.0 negative manual Pg 1.44 0
IV.BOSL.HHZ. 2021-11-11T19:47:14.96 0.1 undecidable manual P 360 0.3885 50 -0.15 93
IV.RUFI.EHZ. 2021-11-11T19:47:13.62 0.1 undecidable manual P 18 0.3103 101 0.13 95
IV.CSNT.HHZ. 2021-11-11T19:47:10.81 0.3 undecidable manual S 223 0.0944 122 0.07 75
IV.OSSC.HHZ. 2021-11-11T19:47:09.01 3.0 undecidable manual P -0.47 0
IV.CSNT.HHZ. 2021-11-11T19:47:08.84 0.1 positive manual P 223 0.0944 122 -0.09 100
IV.FIR.HHZ. 2021-11-11T19:47:05.76 3.0 undecidable manual Pn -2.33 0
IV.PE3.EHZ. 2021-11-11T19:47:02.43 3.0 undecidable manual Pn -2.58 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHN. ML:1.8 0.0008885 0.8 AML other m 2021-11-11T19:47:11.61
IV.OSSC.HHN. ML:2 0.001365 0.76 AML other m 2021-11-11T19:47:11.88
IV.OSSC.HHE. ML:1.8 0.00095 1.64 AML other m 2021-11-11T19:47:11.09
IV.CSNT.HHE. ML:1.8 0.000879 1.86 AML other m 2021-11-11T19:47:11.93
IV.RUFI.EHE. ML:1.3 8.925E-5 0.66 AML other m 2021-11-11T19:47:19.47
IV.FROS.CHE. ML:1.8 0.0001965 0.18 AML other m 2021-11-11T19:47:19.94
IV.RUFI.EHN. ML:1.2 6.1915E-5 1.58 AML other m 2021-11-11T19:47:20.80
IV.FROS.CHN. ML:1.7 0.0001575 0.14 AML other m 2021-11-11T19:47:20.51
IV.BOSL.HHE. ML:1.5 9.625E-5 1.6 AML other m 2021-11-11T19:47:21.85
IV.ASQU.HHE. ML:1.4 9.15E-5 1.64 AML other m 2021-11-11T19:47:22.95
IV.BOSL.HHN. ML:1.2 4.91E-5 0.68 AML other m 2021-11-11T19:47:22.53
IV.ASQU.HHN. ML:1.3 5.795E-5 0.9 AML other m 2021-11-11T19:47:23.81
IV.MOCL.EHE. ML:1.8 0.000157 0.24 AML other m 2021-11-11T19:47:24.51
IV.CRE.HHN. ML:1.5 9.005E-5 0.8 AML other m 2021-11-11T19:47:24.87
IV.CRE.HHE. ML:1.4 8.2E-5 1.3 AML other m 2021-11-11T19:47:24.00
IV.MOCL.EHN. ML:1.9 0.0001875 0.24 AML other m 2021-11-11T19:47:26.14
IV.SEI.HHE. ML:1.8 0.0001255 1.3 AML other m 2021-11-11T19:47:26.88
IV.SEI.HHN. ML:2 0.000207 0.26 AML other m 2021-11-11T19:47:27.29
GU.GENL.EHE. ML:3 0.000278 0.1 AML other m 2021-11-11T19:47:44.67
GU.GENL.EHN. ML:3.2 0.000393 0.08 AML other m 2021-11-11T19:47:45.07
IV.SACR.HNN. ML:3.4 0.000201 0.96 AML other m 2021-11-11T19:47:48.53
IX.SCL3.HNE.01 ML:4.2 0.0006105 0.04 AML other m 2021-11-11T19:48:10.76
IX.SCL3.EHE.02 ML:3.8 0.000261 0.08 AML other m 2021-11-11T19:48:10.75
IX.SCL3.EHN.02 ML:3.8 0.0002295 0.04 AML other m 2021-11-11T19:48:17.97
IX.SCL3.HNN.01 ML:4.3 0.000705 1.96 AML other m 2021-11-11T19:48:18.01
IV.SACR.HNE. ML:4.3 0.001569 0.42 AML other m 2021-11-11T19:48:30.35
IX.CMP3.EHE.02 ML:3.8 0.000248 0.1 AML other m 2021-11-11T19:48:38.36
IX.CMP3.EHN.02 ML:3.7 0.0002175 0.44 AML other m 2021-11-11T19:48:38.28
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