Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 11-05-2022 and time 07:02:35 (Italy) in region 3 km S Impruneta (FI)

A magnitude ML 1.3 earthquake occured in region: 3 km S Impruneta (FI), on

  • 11-05-2022 05:02:35 (UTC)
  • 11-05-2022 07:02:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6570, 11.2590 at 8 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
Impruneta FI 3 14615 14615
San Casciano in Val di Pesa FI 6 17062 31677
Greve in Chianti FI 9 13862 45539
Bagno a Ripoli FI 12 25611 71150
Firenze FI 13 382808 453958
Tavarnelle Val di Pesa FI 13 7800 461758
Scandicci FI 13 50609 512367
Barberino Val d'Elsa FI 15 4386 516753
Montespertoli FI 15 13537 530290
Figline e Incisa Valdarno FI 15 23505 553795
Fiesole FI 17 13969 567764
Rignano sull'Arno FI 17 8651 576415
Lastra a Signa FI 18 20156 596571
Signa FI 19 19179 615750
Pontassieve FI 20 20603 636353

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km S of Firenze (382808 inhabitants)
13 Km SE of Scandicci (50609 inhabitants)
28 Km SE of Prato (191150 inhabitants)
38 Km N of Siena (53903 inhabitants)
41 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)
86 Km SW of Imola (69797 inhabitants)
86 Km SW of Faenza (58541 inhabitants)
89 Km SW of Forlì (117913 inhabitants)
93 Km S of Bologna (386663 inhabitants)
95 Km SW of Cesena (96758 inhabitants)
99 Km E of Massa (69479 inhabitants)
100 Km N of Grosseto (82087 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 1.3 2022-05-11
05:02:35		 43.6573 11.2593 8 2023-01-31
19:03:29		 Bollettino Sismico Italiano INGV 108010271
Reviewed
Rev100 		ML 1.3 2022-05-11
05:02:35		 43.6662 11.265 3 2022-05-11
05:07:21		 Sala Sismica INGV-Roma 104470251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-11 05:02:35 ± 0.07
Latitude 43.6573 ± 0.0036
Longitude 11.2593 ± 0.0062
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 108010271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.62683
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 108010271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-08-02 10:49:38

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 104470251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-11 05:07:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BDI.HHZ. 2022-05-11T05:02:57.35 0.6 undecidable manual S 311 69.5748 50 0.54 40
GU.POPM.HHZ. 2022-05-11T05:02:53.67 0.6 undecidable manual S 317 58.8966 50 -0.28 43
IV.ASQU.HHZ. 2022-05-11T05:02:50.41 0.6 undecidable manual S 70 45.2214 50 0.1 46
IV.SEI.HHZ. 2022-05-11T05:02:50.27 0.6 undecidable manual S 10 44.7219 50 0.09 46
IV.BDI.HHZ. 2022-05-11T05:02:48.00 0.3 undecidable manual P 311 69.5748 50 0.38 62
IV.MOCL.EHZ. 2022-05-11T05:02:48.10 0.6 undecidable manual S 351 39.0276 50 -0.57 41
GU.POPM.HHZ. 2022-05-11T05:02:46.71 0.6 undecidable manual P 317 58.8966 50 0.74 37
IV.CRMI.HHZ. 2022-05-11T05:02:44.56 0.6 undecidable manual S 304 27.1506 106 -0.31 45
IV.RUFI.EHZ. 2022-05-11T05:02:44.90 0.6 undecidable manual S 45 28.3494 105 -0.36 45
IV.SEI.HHZ. 2022-05-11T05:02:43.71 0.3 undecidable manual P 10 44.7219 50 -0.08 69
IV.ASQU.HHZ. 2022-05-11T05:02:43.98 0.3 undecidable manual P 70 45.2214 50 0.12 68
IV.MOCL.EHZ. 2022-05-11T05:02:42.64 0.3 undecidable manual P 351 39.0276 50 -0.27 67
IV.CSNT.HHZ. 2022-05-11T05:02:42.32 0.6 undecidable manual S 173 20.5683 111 -0.38 45
IT.FIE.HGE. 2022-05-11T05:02:41.71 0.6 undecidable manual S 10 16.872 115 0.21 47
IV.CRMI.HHZ. 2022-05-11T05:02:40.24 0.1 undecidable manual P 304 27.1506 106 -0.48 87
IV.OSSC.HHZ. 2022-05-11T05:02:40.97 0.6 undecidable manual S 184 14.874 118 0.08 48
ZH.T1646.EHN. 2022-05-11T05:02:40.34 0.6 undecidable manual S 271 12.0768 123 0.29 47
IV.RUFI.EHZ. 2022-05-11T05:02:40.95 0.1 undecidable manual P 45 28.3494 105 0 96
IV.CSNT.HHZ. 2022-05-11T05:02:39.19 0.1 undecidable manual P 173 20.5683 111 -0.28 92
ZH.T1647.EHZ. 2022-05-11T05:02:39.00 0.6 undecidable manual S 143 6.993 138 0.3 47
IV.OSSC.HHZ. 2022-05-11T05:02:38.38 0.1 undecidable manual P 184 14.874 118 -0.04 98
ZH.T1646.EHN. 2022-05-11T05:02:38.05 0.1 undecidable manual P 271 12.0768 123 0.11 97
IT.FIE.HGE. 2022-05-11T05:02:38.99 0.1 undecidable manual P 10 16.872 115 0.21 94
ZH.T1647.EHZ. 2022-05-11T05:02:37.33 0.1 undecidable manual P 143 6.993 138 0.17 97
ZH.T1648.HNN. 2022-05-11T05:02:37.79 0.3 undecidable manual S 64 2.0979 165 -0.07 75
ZH.T1648.HNN. 2022-05-11T05:02:36.71 0.1 undecidable manual P 64 2.0979 165 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHN. ML:1.3 0.000191 0.84 AML other m 2022-05-11T05:02:41.51
IV.OSSC.HHE. ML:1.6 0.0003635 1.02 AML other m 2022-05-11T05:02:41.18
IV.CSNT.HHN. ML:1.3 0.000154 0.72 AML other m 2022-05-11T05:02:43.33
IV.CSNT.HHE. ML:1.5 0.0002195 0.78 AML other m 2022-05-11T05:02:44.89
IV.RUFI.EHN. ML:1.1 0.00005828 1.58 AML other m 2022-05-11T05:02:45.98
IV.CRMI.HHN. ML:1.1 0.0000727 1.3 AML other m 2022-05-11T05:02:45.06
IV.RUFI.EHE. ML:1.1 0.00006815 1.1 AML other m 2022-05-11T05:02:45.17
IV.CRMI.HHE. ML:1.0 0.000062 0.6 AML other m 2022-05-11T05:02:46.98
IV.MOCL.EHN. ML:1.4 0.0000998 0.28 AML other m 2022-05-11T05:02:48.56
IV.MOCL.EHE. ML:1.5 0.0001275 0.3 AML other m 2022-05-11T05:02:50.22
IV.ASQU.HHN. ML:1.2 0.0000471 1.2 AML other m 2022-05-11T05:02:50.17
IV.SEI.HHE. ML:1.5 0.00010375000000000001 0.86 AML other m 2022-05-11T05:02:50.87
IV.ASQU.HHE. ML:1.1 0.00003995 0.4 AML other m 2022-05-11T05:02:50.70
IV.SEI.HHN. ML:1.7 0.000154 0.5 AML other m 2022-05-11T05:02:51.69
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