Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 10-05-2022 and time 12:55:56 (Italy) in region 2 km S Impruneta (FI)

A magnitude ML 1.2 earthquake occured in region: 2 km S Impruneta (FI), on

  • 10-05-2022 10:55:56 (UTC)
  • 10-05-2022 12:55:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6710, 11.2560 at 8 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.

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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
Impruneta FI 2 14615 14615
San Casciano in Val di Pesa FI 6 17062 31677
Bagno a Ripoli FI 10 25611 57288
Greve in Chianti FI 11 13862 71150
Firenze FI 11 382808 453958
Scandicci FI 12 50609 504567
Tavarnelle Val di Pesa FI 14 7800 512367
Montespertoli FI 15 13537 525904
Fiesole FI 16 13969 539873
Figline e Incisa Valdarno FI 16 23505 563378
Barberino Val d'Elsa FI 16 4386 567764
Lastra a Signa FI 16 20156 587920
Rignano sull'Arno FI 17 8651 596571
Signa FI 18 19179 615750
Sesto Fiorentino FI 19 48958 664708
Pontassieve FI 19 20603 685311
Campi Bisenzio FI 19 46166 731477

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Firenze (382808 inhabitants)
12 Km SE of Scandicci (50609 inhabitants)
27 Km SE of Prato (191150 inhabitants)
40 Km N of Siena (53903 inhabitants)
40 Km SE of Pistoia (90315 inhabitants)
55 Km W of Arezzo (99543 inhabitants)
64 Km E of Lucca (89046 inhabitants)
69 Km E of Pisa (89158 inhabitants)
77 Km E of Livorno (159219 inhabitants)
84 Km E of Viareggio (62467 inhabitants)
84 Km SW of Imola (69797 inhabitants)
85 Km SW of Faenza (58541 inhabitants)
88 Km SW of Forlì (117913 inhabitants)
92 Km S of Bologna (386663 inhabitants)
95 Km SW of Cesena (96758 inhabitants)
98 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 1.2 2022-05-10
10:55:56		 43.6707 11.2562 8 2022-05-10
11:13:41		 Sala Sismica INGV-Roma 104441501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-10 10:55:56 ± 0.07
Latitude 43.6707 ± 0.0045
Longitude 11.2562 ± 0.0050
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 104441501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 445
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 173
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39031
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 104441501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-10 11:13:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GRI.EHZ. 2022-05-10T10:57:55.89 3.0 positive manual Pg 17.049999 0
IV.SGG.HHZ. 2022-05-10T10:57:45.46 3.0 undecidable manual Sg 4.18 0
IV.MESG.HHZ. 2022-05-10T10:57:42.07 3.0 undecidable manual Pg 9.76 0
IV.CET2.HHZ. 2022-05-10T10:57:40.31 3.0 negative manual Pg 12.22 0
IV.VVLD.HHZ. 2022-05-10T10:57:23.94 3.0 undecidable manual Sg 0.65 0
MN.TRI.HHZ. 2022-05-10T10:57:19.82 3.0 undecidable manual Sn 1.44 0
IV.BOSL.HHZ. 2022-05-10T10:57:06.80 0.6 undecidable manual S 18 30.3474 104 5.985 0
GU.PCP.HHZ. 2022-05-10T10:57:05.27 3.0 undecidable manual Sn 1.46 0
IV.TEOL.HHZ. 2022-05-10T10:56:49.93 3.0 undecidable manual Sn -1.58 0
IV.LRP.EHZ. 2022-05-10T10:56:45.04 3.0 undecidable manual Pn -4.89 0
NI.POLC.HHZ. 2022-05-10T10:56:44.34 3.0 positive manual Pg 3.05 0
IV.SSFR.HHZ. 2022-05-10T10:56:22.47 3.0 undecidable manual P -5.13 0
IV.CAFI.HHZ. 2022-05-10T10:56:16.29 3.0 undecidable manual P -4.08 0
IV.ZCCA.HHZ. 2022-05-10T10:56:12.13 3.0 undecidable manual P 0.51 0
IV.SEI.HHZ. 2022-05-10T10:56:11.19 0.3 undecidable manual S 11 43.3233 50 0.31 66
IV.MOCL.EHE. 2022-05-10T10:56:09.22 0.6 undecidable manual S 351 37.5291 50 -0.12 46
IV.CRMI.HHZ. 2022-05-10T10:56:05.67 0.6 undecidable manual S 302 26.1516 106 0.14 47
IV.RUFI.EHN. 2022-05-10T10:56:05.84 0.6 undecidable manual S 47 27.5502 105 -0.14 47
IV.SEI.HHZ. 2022-05-10T10:56:04.59 1.0 positive manual P 11 43.3233 50 -0.04 23
IV.MOCL.EHE. 2022-05-10T10:56:03.52 0.1 undecidable manual P 351 37.5291 50 -0.22 90
IV.BOSL.HHZ. 2022-05-10T10:56:02.39 0.1 undecidable manual P 18 30.3474 104 0.03 95
IV.MPPT.EHZ. 2022-05-10T10:56:02.98 1.0 undecidable manual P 337 34.4433 102 -0.17 23
IV.CRMI.HHZ. 2022-05-10T10:56:01.24 0.6 undecidable manual P 302 26.1516 106 -0.3 45
IV.RUFI.EHN. 2022-05-10T10:56:01.90 0.1 undecidable manual P 47 27.5502 105 0.1 94
ZH.T1647.HNN. 2022-05-10T10:56:00.02 0.6 undecidable manual S 148 8.3805 132 0.01 49
IV.FIR.HHZ. 2022-05-10T10:55:59.85 3.0 undecidable manual P 0
ZH.T1646.EHN. 2022-05-10T10:55:59.04 0.1 undecidable manual P 264 11.877 123 0.13 96
ZH.T1647.HNN. 2022-05-10T10:55:58.33 0.1 undecidable manual P 148 8.3805 132 -0.02 99
ZH.T1648.HNZ. 2022-05-10T10:55:58.80 0.3 undecidable manual S 105 2.1978 164 -0.02 75
ZH.T1648.HNZ. 2022-05-10T10:55:57.68 0.1 undecidable manual P 105 2.1978 164 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:1.1 0.00008080000000000001 1.6 AML other m 2022-05-10T10:56:05.94
IV.BOSL.HHE. ML:1.0 0.00005424999999999999 0.36 AML other m 2022-05-10T10:56:07.36
IV.BOSL.HHN. ML:0.9 0.00004225 0.36 AML other m 2022-05-10T10:56:07.37
IV.CRMI.HHN. ML:1.2 0.00009635000000000001 1.36 AML other m 2022-05-10T10:56:07.74
IV.SEI.HHE. ML:1.5 0.0001 0.2 AML other m 2022-05-10T10:56:11.89
IV.SEI.HHN. ML:1.8 0.000224 0.52 AML other m 2022-05-10T10:56:12.72
IV.BDI.HHN. ML:1.2 0.000031299999999999995 0.8 AML other m 2022-05-10T10:56:19.66
IV.CAFI.HHN. ML:0.9 0.000016904999999999998 0.38 AML other m 2022-05-10T10:56:20.73
IV.BDI.HHE. ML:1.2 0.0000322 0.84 AML other m 2022-05-10T10:56:21.18
IV.CAFI.HHE. ML:0.8 0.00001137 1.7 AML other m 2022-05-10T10:56:21.88
GU.PCP.HHN. ML:1.8 0.00001492 0.1 AML other m 2022-05-10T10:56:58.21
GU.PCP.HHE. ML:2.3 0.000038150000000000006 1.9 AML other m 2022-05-10T10:57:07.00
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