Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 09-05-2022 and time 04:22:13 (UTC) in region 4 km SW Impruneta (FI)

A magnitude ML 2.0 earthquake occured in region: 4 km SW Impruneta (FI), on

  • 09-05-2022 04:22:13 (UTC)
  • 09-05-2022 06:22:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6590, 11.2340 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
Impruneta FI 4 14615 14615
San Casciano in Val di Pesa FI 4 17062 31677
Greve in Chianti FI 11 13862 45539
Scandicci FI 12 50609 96148
Tavarnelle Val di Pesa FI 12 7800 103948
Bagno a Ripoli FI 13 25611 129559
Firenze FI 13 382808 512367
Montespertoli FI 13 13537 525904
Barberino Val d'Elsa FI 14 4386 530290
Lastra a Signa FI 16 20156 550446
Fiesole FI 17 13969 564415
Figline e Incisa Valdarno FI 18 23505 587920
Signa FI 18 19179 607099
Montelupo Fiorentino FI 19 14098 621197
Rignano sull'Arno FI 19 8651 629848
Sesto Fiorentino FI 20 48958 678806
Campi Bisenzio FI 20 46166 724972
Certaldo FI 20 16121 741093

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SE of Scandicci (50609 inhabitants)
13 Km S of Firenze (382808 inhabitants)
27 Km SE of Prato (191150 inhabitants)
39 Km N of Siena (53903 inhabitants)
40 Km SE of Pistoia (90315 inhabitants)
57 Km W of Arezzo (99543 inhabitants)
62 Km E of Lucca (89046 inhabitants)
67 Km E of Pisa (89158 inhabitants)
75 Km E of Livorno (159219 inhabitants)
82 Km E of Viareggio (62467 inhabitants)
86 Km SW of Imola (69797 inhabitants)
87 Km SW of Faenza (58541 inhabitants)
90 Km SW of Forlì (117913 inhabitants)
93 Km S of Bologna (386663 inhabitants)
97 Km SW of Cesena (96758 inhabitants)
97 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 2.0 2022-05-09
04:22:13		 43.6592 11.2337 7 2023-01-31
19:03:50		 Bollettino Sismico Italiano INGV 110635301
Reviewed
Rev100 		ML 2.0 2022-05-09
04:22:13		 43.657 11.2367 10 2022-05-09
04:28:30		 Sala Sismica INGV-Roma 104377551
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-09 04:22:13 ± 0.07
Latitude 43.6592 ± 0.0036
Longitude 11.2337 ± 0.0062
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 110635301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 124
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.11601
Epicentral distance of station farthest from the epicenter (degree) 0.92810
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 104377551
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-09 04:28:30

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 110635301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-10-18 14:39:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CASP.HHZ. 2022-05-09T04:22:43.69 0.6 undecidable manual S 197 100.8213 50 -0.39 40
IV.PARC.HHZ. 2022-05-09T04:22:39.38 0.3 undecidable manual S 90 80.6637 50 0.68 57
IV.LMD.HHZ. 2022-05-09T04:22:33.16 0.3 undecidable manual S 39 59.8956 50 0 71
IV.VISG.HHZ. 2022-05-09T04:22:33.42 0.6 undecidable manual S 15 60.8946 50 -0.01 47
GU.EQUI.HHZ. 2022-05-09T04:22:32.28 0.3 undecidable manual P 303 103.0191 50 0.67 55
IV.CASP.HHZ. 2022-05-09T04:22:32.17 0.3 undecidable manual P 197 100.8213 50 0.9 50
IV.PII.HHZ. 2022-05-09T04:22:31.20 0.6 undecidable manual S 277 57.2982 50 -1.26 31
IV.FROS.CHZ. 2022-05-09T04:22:29.83 0.3 undecidable manual S 187 50.2164 50 -0.75 59
IV.ATMI.HHZ. 2022-05-09T04:22:29.87 0.6 undecidable manual P 113 90.7425 50 0.16 43
IV.PARC.HHZ. 2022-05-09T04:22:28.34 0.3 undecidable manual P 90 80.6637 50 0.18 66
IV.MOCL.EHZ. 2022-05-09T04:22:27.16 0.1 undecidable manual S 354 38.628 100 -0.2 95
IV.BDI.HHZ. 2022-05-09T04:22:27.06 0.3 undecidable manual P 311 67.8765 50 0.87 54
GU.CARD.HHZ. 2022-05-09T04:22:27.28 0.3 undecidable manual P 304 72.5718 50 0.36 65
IV.CAFI.HHZ. 2022-05-09T04:22:26.47 0.1 undecidable manual P 122 69.375 50 0.05 92
GU.MAIM.HHZ. 2022-05-09T04:22:25.89 0.3 undecidable manual P 296 65.7897 50 0.02 70
IV.MPPT.EHZ. 2022-05-09T04:22:25.88 0.3 undecidable manual S 341 35.0427 101 -0.26 71
GU.POPM.HHZ. 2022-05-09T04:22:25.07 0.6 undecidable manual P 318 57.2982 50 0.5 43
IV.VISG.HHZ. 2022-05-09T04:22:25.26 0.1 undecidable manual P 15 60.8946 50 0.14 92
IV.LMD.HHZ. 2022-05-09T04:22:24.85 0.1 negative manual P 39 59.8956 50 -0.11 93
IV.PII.HHZ. 2022-05-09T04:22:24.41 0.3 undecidable manual P 277 57.2982 50 -0.15 69
IV.RUFI.EHZ. 2022-05-09T04:22:24.00 0.1 undecidable manual S 48 29.748 103 -0.33 94
IV.CRE.HHZ. 2022-05-09T04:22:24.24 0.3 undecidable manual P 94 57.7977 50 -0.4 66
IV.BOSL.HHZ. 2022-05-09T04:22:24.82 0.1 undecidable manual S 20 32.1456 102 -0.36 93
IV.CRMI.HHZ. 2022-05-09T04:22:23.15 0.3 undecidable manual S 307 25.3524 105 0.27 72
IV.FROS.CHZ. 2022-05-09T04:22:23.27 0.1 undecidable manual P 187 50.2164 50 -0.2 93
IV.SEI.HHZ. 2022-05-09T04:22:22.53 0.1 positive manual P 13 44.9217 50 -0.13 95
IV.CSNT.HHZ. 2022-05-09T04:22:21.20 0.3 undecidable manual S 168 21.1677 108 -0.26 72
IV.MOCL.EHZ. 2022-05-09T04:22:21.10 0.1 negative manual P 354 38.628 100 -0.51 88
IV.BOSL.HHZ. 2022-05-09T04:22:20.31 0.1 negative manual P 20 32.1456 102 -0.04 99
IV.MPPT.EHZ. 2022-05-09T04:22:20.47 0.1 negative manual P 341 35.0427 101 -0.44 91
IT.FIE.HGZ. 2022-05-09T04:22:20.44 0.3 undecidable manual S 16 17.1717 112 0.28 72
IV.RUFI.EHZ. 2022-05-09T04:22:19.82 0.1 positive manual P 48 29.748 103 -0.05 99
IV.FIR.HNZ. 2022-05-09T04:22:19.19 0.3 undecidable manual S 8 12.876 118 0.37 72
IV.OSSC.HHZ. 2022-05-09T04:22:19.83 0.3 undecidable manual S 176 15.0738 114 0.34 72
IV.CSNT.HHZ. 2022-05-09T04:22:18.06 0.1 negative manual P 168 21.1677 108 -0.15 99
IV.CRMI.HHZ. 2022-05-09T04:22:18.94 0.1 negative manual P 307 25.3524 105 -0.08 99
IV.OSSC.HHZ. 2022-05-09T04:22:17.21 0.1 positive manual P 176 15.0738 114 0.14 100
IT.FIE.HGZ. 2022-05-09T04:22:17.90 0.1 undecidable manual P 16 17.1717 112 0.45 93
IV.FIR.HNZ. 2022-05-09T04:22:16.89 0.3 undecidable manual P 8 12.876 118 0.21 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:2.2 0.0016699999999999998 1 AML other m 2022-05-09T04:22:20.95
IV.OSSC.HHN. ML:2.1 0.0013050000000000002 0.32 AML other m 2022-05-09T04:22:20.53
IV.CRMI.HHN. ML:2.0 0.0005525 1.44 AML other m 2022-05-09T04:22:24.01
IV.CRMI.HNN. ML:1.9 0.000502 1.44 AML other m 2022-05-09T04:22:24.01
IV.CSNT.HHE. ML:2.1 0.000876 0.7 AML other m 2022-05-09T04:22:24.14
IV.CRMI.HHE. ML:1.6 0.000234 0.44 AML other m 2022-05-09T04:22:24.68
IV.CRMI.HNE. ML:1.8 0.00038 0.44 AML other m 2022-05-09T04:22:24.69
IV.CSNT.HHN. ML:2.0 0.0008095 0.56 AML other m 2022-05-09T04:22:25.35
IV.BOSL.HHE. ML:2.0 0.0005155000000000001 0.22 AML other m 2022-05-09T04:22:25.23
IV.BOSL.HHN. ML:1.9 0.00034050000000000004 0.42 AML other m 2022-05-09T04:22:25.24
IV.MPPT.EHE. ML:1.9 0.00034750000000000004 0.58 AML other m 2022-05-09T04:22:26.53
IV.MPPT.EHN. ML:1.7 0.00019350000000000001 0.54 AML other m 2022-05-09T04:22:26.53
IV.MOCL.EHE. ML:2.1 0.000544 1.14 AML other m 2022-05-09T04:22:27.15
IV.MOCL.EHN. ML:2.2 0.0005515 1.76 AML other m 2022-05-09T04:22:28.89
IV.FROS.CHE. ML:2.6 0.000977 1.8 AML other m 2022-05-09T04:22:30.99
IV.SEI.HHN. ML:2.5 0.0010184999999999999 0.3 AML other m 2022-05-09T04:22:30.42
IV.FROS.CHN. ML:2.3 0.0005859999999999999 0.46 AML other m 2022-05-09T04:22:30.52
GU.POPM.HHE. ML:1.8 0.00015200000000000004 0.2 AML other m 2022-05-09T04:22:33.41
IV.LMD.HHE. ML:2.3 0.00042449999999999996 0.6 AML other m 2022-05-09T04:22:33.15
IV.VISG.HHE. ML:1.9 0.0001725 1.62 AML other m 2022-05-09T04:22:33.88
IV.SEI.HHE. ML:2.2 0.000469 1.6 AML other m 2022-05-09T04:22:34.86
IV.VISG.HHN. ML:1.8 0.000124 1.6 AML other m 2022-05-09T04:22:34.08
IV.LMD.HHN. ML:2.2 0.00036199999999999996 0.68 AML other m 2022-05-09T04:22:34.12
GU.MAIM.HHE. ML:1.4 0.00004815 0.84 AML other m 2022-05-09T04:22:34.36
IV.CAFI.HHE. ML:1.7 0.00007935 0.62 AML other m 2022-05-09T04:22:35.49
GU.POPM.HHN. ML:2.0 0.00021750000000000003 0.22 AML other m 2022-05-09T04:22:35.72
IV.CRE.HHE. ML:1.9 0.000161 0.32 AML other m 2022-05-09T04:22:36.38
GU.MAIM.HHN. ML:1.6 0.00007575 0.78 AML other m 2022-05-09T04:22:36.55
IV.PII.HHN. ML:2.2 0.00035250000000000006 0.98 AML other m 2022-05-09T04:22:36.64
IV.CRE.HHN. ML:2.0 0.0002145 0.92 AML other m 2022-05-09T04:22:36.21
IV.PII.HHE. ML:2.2 0.000356 0.3 AML other m 2022-05-09T04:22:36.90
IV.BDI.HHE. ML:1.9 0.00013545 0.42 AML other m 2022-05-09T04:22:38.37
IV.CAFI.HHN. ML:1.6 0.0000676 1.22 AML other m 2022-05-09T04:22:38.01
IV.BDI.HHN. ML:1.8 0.00011199999999999998 1.54 AML other m 2022-05-09T04:22:38.88
GU.CARD.HHN. ML:1.9 0.0001185 0.68 AML other m 2022-05-09T04:22:39.34
GU.CARD.HHE. ML:2.1 0.0001855 0.26 AML other m 2022-05-09T04:22:39.35
IV.CASP.HHE. ML:1.6 0.00004055 0.76 AML other m 2022-05-09T04:22:44.00
IV.PARC.HHN. ML:1.9 0.00010200000000000001 1.06 AML other m 2022-05-09T04:22:44.86
IV.PARC.HHE. ML:1.7 0.00006805 0.46 AML other m 2022-05-09T04:22:45.60
IV.CASP.HHN. ML:1.4 0.00002675 1.22 AML other m 2022-05-09T04:22:45.14
GU.EQUI.HHE. ML:1.8 0.00006435 1.62 AML other m 2022-05-09T04:22:46.15
GU.EQUI.HHN. ML:1.9 0.0000711 1.16 AML other m 2022-05-09T04:22:47.21
IV.ATMI.HHN. ML:2.2 0.00016499999999999997 1.1 AML other m 2022-05-09T04:22:48.77
IV.ATMI.HHE. ML:2.1 0.00013450000000000002 0.54 AML other m 2022-05-09T04:22:50.13
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
Waveforms Seismic signals in miniseed + resp format Download