Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 06-01-2022 and time 15:19:33 (Italy) in region 2 km NW Impruneta (FI)

A magnitude ML 1.1 earthquake occured in region: 2 km NW Impruneta (FI), on

  • 06-01-2022 14:19:33 (UTC)
  • 06-01-2022 15:19:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6960, 11.2330 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Impruneta FI 2 14615 14615
San Casciano in Val di Pesa FI 6 17062 31677
Scandicci FI 8 50609 82286
Firenze FI 8 382808 465094
Bagno a Ripoli FI 9 25611 490705
Lastra a Signa FI 13 20156 510861
Fiesole FI 13 13969 524830
Montespertoli FI 14 13537 538367
Greve in Chianti FI 14 13862 552229
Signa FI 15 19179 571408
Sesto Fiorentino FI 16 48958 620366
Tavarnelle Val di Pesa FI 16 7800 628166
Campi Bisenzio FI 16 46166 674332
Montelupo Fiorentino FI 17 14098 688430
Barberino Val d'Elsa FI 18 4386 692816
Figline e Incisa Valdarno FI 18 23505 716321
Rignano sull'Arno FI 18 8651 724972
Pontassieve FI 19 20603 745575
Poggio a Caiano PO 20 10007 755582
Calenzano FI 20 17489 773071

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km SE of Scandicci (50609 inhabitants)
8 Km S of Firenze (382808 inhabitants)
23 Km SE of Prato (191150 inhabitants)
37 Km SE of Pistoia (90315 inhabitants)
43 Km N of Siena (53903 inhabitants)
58 Km W of Arezzo (99543 inhabitants)
61 Km E of Lucca (89046 inhabitants)
67 Km E of Pisa (89158 inhabitants)
76 Km E of Livorno (159219 inhabitants)
81 Km E of Viareggio (62467 inhabitants)
83 Km SW of Imola (69797 inhabitants)
84 Km SW of Faenza (58541 inhabitants)
87 Km SW of Forlì (117913 inhabitants)
89 Km S of Bologna (386663 inhabitants)
95 Km SW of Cesena (96758 inhabitants)
95 Km E of Massa (69479 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
Reviewed
Rev100 		ML 1.1 2022-01-06
14:19:33		 43.6963 11.2328 10 2022-01-06
14:27:07		 Sala Sismica INGV-Roma 99411971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-06 14:19:33 ± 0.11
Latitude 43.6963 ± 0.0054
Longitude 11.2328 ± 0.0087
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99411971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 710
Semi-minor axis of confidence ellipse (meter) 380
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51351
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 99411971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-06 14:27:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.SSB3.HHZ.02 2022-01-06T14:21:30.50 3.0 undecidable manual Sg 15.51 0
IV.ESCV.HHZ. 2022-01-06T14:21:22.70 3.0 negative manual Pg 17.620001 0
IV.MILZ.HHZ. 2022-01-06T14:21:14.39 3.0 negative manual Pg 13.83 0
GU.PZZ.HHZ. 2022-01-06T14:21:11.73 3.0 undecidable manual Sg 18.620001 0
IV.RNI2.HHZ. 2022-01-06T14:20:51.97 3.0 undecidable manual Sn 1.88 0
IV.CMPR.HHZ. 2022-01-06T14:20:46.64 3.0 undecidable manual Pg 8.98 0
IV.LAV9.HNZ. 2022-01-06T14:20:33.54 3.0 undecidable manual Sn -0.78 0
GU.TRAV.HHZ. 2022-01-06T14:20:32.88 3.0 undecidable manual Pg 15.46 0
IV.MAGA.HHZ. 2022-01-06T14:20:27.77 3.0 undecidable manual Sn -2.19 0
IV.RM33.HNZ. 2022-01-06T14:20:26.30 3.0 undecidable manual Sn 2.04 0
IV.EUCT.HNZ. 2022-01-06T14:20:05.13 3.0 undecidable manual Pn 0.8 0
IV.ASSB.HHZ. 2022-01-06T14:19:52.30 3.0 undecidable manual Pn 0.07 0
IV.BRSN.EHZ. 2022-01-06T14:19:47.41 3.0 positive manual P 0.46 0
IV.VISG.HHN. 2022-01-06T14:19:44.46 1.0 undecidable manual P 16 56.9985 50 1.01 34
IV.MOCL.EHZ. 2022-01-06T14:19:44.70 0.6 undecidable manual S 353 34.4433 50 -0.35 91
IV.CSNT.HHZ. 2022-01-06T14:19:42.10 0.6 undecidable manual S 169 25.1526 111 -0.29 93
IV.RUFI.EHZ. 2022-01-06T14:19:42.90 0.6 undecidable manual S 55 27.1506 109 -0.15 96
IV.CRMI.HHZ. 2022-01-06T14:19:41.65 0.6 undecidable manual S 299 23.0547 112 -0.07 98
IV.MOCL.EHZ. 2022-01-06T14:19:40.04 1.0 negative manual P 353 34.4433 50 0.06 48
IV.OSSC.HHZ. 2022-01-06T14:19:40.50 0.6 undecidable manual S 177 19.1697 116 0.01 100
IV.CRMI.HHZ. 2022-01-06T14:19:38.23 1.0 negative manual P 299 23.0547 112 0.17 48
IV.CSNT.HHZ. 2022-01-06T14:19:38.45 0.6 negative manual P 169 25.1526 111 0 99
IV.RUFI.EHZ. 2022-01-06T14:19:38.96 0.6 positive manual P 55 27.1506 109 0.14 96
IV.OSSC.HHZ. 2022-01-06T14:19:37.56 0.6 positive manual P 177 19.1697 116 0.22 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.2 0.000112528685 0.1792 AML other m 2022-01-06T14:19:40.74
IV.OSSC.HHN. ML:1.0 0.00007139443 0.1792 AML other m 2022-01-06T14:19:42.35
IV.CSNT.HHE. ML:1.0 0.00006217145 0.3968 AML other m 2022-01-06T14:19:44.36
IV.CSNT.HHN. ML:1.0 0.000054039075 0.16 AML other m 2022-01-06T14:19:43.30
IV.RUFI.EHE. ML:1.2 0.00008573078499999999 2.6432 AML other m 2022-01-06T14:19:48.12
IV.RUFI.EHN. ML:0.9 0.000042120325 0.2176 AML other m 2022-01-06T14:19:43.10
IV.MOCL.EHE. ML:1.2 0.00006945086 0.224 AML other m 2022-01-06T14:19:46.01
IV.MOCL.EHN. ML:1.3 0.000078362935 0.32 AML other m 2022-01-06T14:19:45.72
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