Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 03-05-2022 and time 22:20:19 (Italy) in region 4 km S Impruneta (FI)

A magnitude ML 1.6 earthquake occured in region: 4 km S Impruneta (FI), on

  • 03-05-2022 20:20:19 (UTC)
  • 03-05-2022 22:20:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6530, 11.2420 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 4 14615 14615
San Casciano in Val di Pesa FI 5 17062 31677
Greve in Chianti FI 10 13862 45539
Tavarnelle Val di Pesa FI 12 7800 53339
Bagno a Ripoli FI 13 25611 78950
Scandicci FI 13 50609 129559
Firenze FI 13 382808 512367
Montespertoli FI 13 13537 525904
Barberino Val d'Elsa FI 14 4386 530290
Figline e Incisa Valdarno FI 17 23505 553795
Lastra a Signa FI 17 20156 573951
Fiesole FI 18 13969 587920
Signa FI 19 19179 607099
Rignano sull'Arno FI 19 8651 615750
Montelupo Fiorentino FI 20 14098 629848
Certaldo FI 20 16121 645969

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Scandicci (50609 inhabitants)
13 Km S of Firenze (382808 inhabitants)
28 Km SE of Prato (191150 inhabitants)
38 Km N of Siena (53903 inhabitants)
41 Km SE of Pistoia (90315 inhabitants)
56 Km W of Arezzo (99543 inhabitants)
63 Km E of Lucca (89046 inhabitants)
68 Km E of Pisa (89158 inhabitants)
76 Km E of Livorno (159219 inhabitants)
83 Km E of Viareggio (62467 inhabitants)
87 Km SW of Imola (69797 inhabitants)
87 Km SW of Faenza (58541 inhabitants)
90 Km SW of Forlì (117913 inhabitants)
94 Km S of Bologna (386663 inhabitants)
97 Km SW of Cesena (96758 inhabitants)
98 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 1.6 2022-05-03
20:20:19		 43.6527 11.2423 8 2023-01-31
19:03:24		 Bollettino Sismico Italiano INGV 107668121
Reviewed
Rev100 		ML 1.6 2022-05-03
20:20:19		 43.6567 11.2477 7 2022-05-03
20:30:04		 Sala Sismica INGV-Roma 104142281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-03 20:20:19 ± 0.05
Latitude 43.6527 ± 0.0027
Longitude 11.2423 ± 0.0050
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 107668121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 299
Semi-minor axis of confidence ellipse (meter) 237
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.12231
Epicentral distance of station farthest from the epicenter (degree) 0.61604
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 107668121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-07-25 07:41:46

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 104142281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-03 20:30:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2022-05-03T20:20:40.61 0.6 undecidable manual S 121 68.376 50 -0.15 45
GU.MAIM.HHZ. 2022-05-03T20:20:39.78 0.6 undecidable manual S 296 66.6777 50 -0.52 42
GU.POPM.HHZ. 2022-05-03T20:20:38.45 0.6 undecidable manual S 318 58.2972 50 0.39 44
IV.CRE.HHZ. 2022-05-03T20:20:38.13 0.6 undecidable manual S 94 57.0984 50 0.41 43
IV.LMD.HHZ. 2022-05-03T20:20:38.64 0.3 undecidable manual S 38 59.9955 50 0.13 69
IV.FNVD.HHZ. 2022-05-03T20:20:38.24 0.6 undecidable manual S 351 57.8976 50 0.28 45
IV.PII.HHZ. 2022-05-03T20:20:37.65 0.6 undecidable manual S 278 58.0974 50 -0.34 44
IV.SEI.HHZ. 2022-05-03T20:20:34.59 0.6 undecidable manual S 12 45.5211 50 -0.05 48
IV.MOCL.EHZ. 2022-05-03T20:20:32.92 0.3 undecidable manual S 353 39.3273 50 -0.08 72
GU.MAIM.HHZ. 2022-05-03T20:20:31.68 0.3 undecidable manual P 296 66.6777 50 0.24 66
IV.CAFI.HHZ. 2022-05-03T20:20:31.94 0.6 undecidable manual P 121 68.376 50 0.23 44
IV.MPPT.EHZ. 2022-05-03T20:20:31.72 0.6 undecidable manual S 340 35.9418 50 -0.37 46
IV.PII.HHZ. 2022-05-03T20:20:30.22 0.3 undecidable manual P 278 58.0974 50 0.11 69
IV.FNVD.HHZ. 2022-05-03T20:20:30.35 0.3 undecidable manual P 351 57.8976 50 0.26 67
IV.BOSL.HHZ. 2022-05-03T20:20:30.64 0.3 undecidable manual S 19 32.6451 104 -0.35 69
GU.POPM.HHZ. 2022-05-03T20:20:30.40 0.6 undecidable manual P 318 58.2972 50 0.25 45
IV.LMD.HHZ. 2022-05-03T20:20:30.61 0.3 undecidable manual P 38 59.9955 50 0.2 68
IV.RUFI.EHZ. 2022-05-03T20:20:29.68 0.3 undecidable manual S 46 29.6481 105 -0.32 70
IV.CRE.HHZ. 2022-05-03T20:20:29.99 0.1 undecidable manual P 94 57.0984 50 0.04 94
IV.CRMI.HHZ. 2022-05-03T20:20:29.08 0.6 undecidable manual S 307 26.3514 107 0.18 48
IV.SEI.HHZ. 2022-05-03T20:20:28.40 0.3 undecidable manual P 12 45.5211 50 0.22 69
IV.MPPT.EHZ. 2022-05-03T20:20:26.39 0.1 undecidable manual P 340 35.9418 50 -0.31 92
IT.FIE.HGE. 2022-05-03T20:20:26.31 0.6 undecidable manual S 14 17.6712 114 0.26 48
IV.MOCL.EHZ. 2022-05-03T20:20:26.91 0.1 undecidable manual P 353 39.3273 50 -0.32 91
IV.CSNT.HHZ. 2022-05-03T20:20:26.68 0.3 undecidable manual S 169 20.2686 111 -0.23 72
IV.OSSC.HHZ. 2022-05-03T20:20:25.15 0.6 undecidable manual S 179 14.3745 119 0.12 50
IV.FIR.HHZ. 2022-05-03T20:20:25.01 0.6 undecidable manual S 4 13.5753 120 0.22 49
IV.RUFI.EHZ. 2022-05-03T20:20:25.32 0.1 undecidable manual P 46 29.6481 105 -0.18 96
IV.BOSL.HHZ. 2022-05-03T20:20:25.95 0.1 undecidable manual P 19 32.6451 104 -0.12 97
IV.CRMI.HHZ. 2022-05-03T20:20:24.86 0.1 undecidable manual P 307 26.3514 107 0 100
IV.CSNT.HHZ. 2022-05-03T20:20:23.55 0.1 undecidable manual P 169 20.2686 111 -0.16 98
IT.FIE.HGE. 2022-05-03T20:20:23.56 0.3 undecidable manual P 14 17.6712 114 0.34 71
IV.OSSC.HHZ. 2022-05-03T20:20:22.79 0.1 undecidable manual P 179 14.3745 119 0.16 99
IV.FIR.HHZ. 2022-05-03T20:20:22.66 0.3 undecidable manual P 4 13.5753 120 0.17 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHN. ML:1.7 0.0005795 0.42 AML other m 2022-05-03T20:20:25.01
IV.FIR.HHE. ML:2.1 0.001445 0.16 AML other m 2022-05-03T20:20:25.49
IV.FIR.HNE. ML:2.1 0.0014199999999999998 0.16 AML other m 2022-05-03T20:20:25.49
IV.FIR.HHN. ML:2.0 0.001265 0.5 AML other m 2022-05-03T20:20:25.61
IV.FIR.HNN. ML:2.0 0.00126 0.48 AML other m 2022-05-03T20:20:25.37
IV.OSSC.HHE. ML:1.9 0.0009005 0.66 AML other m 2022-05-03T20:20:25.42
IV.CSNT.HHN. ML:1.5 0.000262 0.7 AML other m 2022-05-03T20:20:27.98
IV.CSNT.HHE. ML:1.6 0.00032299999999999994 1.1 AML other m 2022-05-03T20:20:28.72
IV.CRMI.HHN. ML:1.4 0.000145 1.3 AML other m 2022-05-03T20:20:29.77
IV.RUFI.EHN. ML:1.3 0.0001045 0.24 AML other m 2022-05-03T20:20:30.25
IV.RUFI.EHE. ML:1.4 0.00014110000000000001 0.22 AML other m 2022-05-03T20:20:30.43
IV.CRMI.HHE. ML:1.1 0.00006835 0.52 AML other m 2022-05-03T20:20:30.53
IV.BOSL.HHE. ML:1.5 0.0001545 1.72 AML other m 2022-05-03T20:20:30.93
IV.BOSL.HHN. ML:1.4 0.00010035 0.36 AML other m 2022-05-03T20:20:31.31
IV.MPPT.EHE. ML:1.6 0.00013900000000000002 0.64 AML other m 2022-05-03T20:20:32.38
IV.MPPT.EHN. ML:1.4 0.00008999999999999999 0.44 AML other m 2022-05-03T20:20:32.36
IV.MOCL.EHE. ML:1.9 0.0002925 0.46 AML other m 2022-05-03T20:20:33.79
IV.MOCL.EHN. ML:1.8 0.00021800000000000004 0.84 AML other m 2022-05-03T20:20:34.23
IV.SEI.HHN. ML:2.1 0.000373 0.28 AML other m 2022-05-03T20:20:36.16
IV.PII.HHE. ML:1.7 0.0001215 0.28 AML other m 2022-05-03T20:20:37.83
IV.PII.HHN. ML:1.7 0.0001036 1.68 AML other m 2022-05-03T20:20:37.97
IV.CRE.HHE. ML:1.3 0.0000424 0.5 AML other m 2022-05-03T20:20:38.20
IV.LMD.HHE. ML:1.7 0.0001005 0.52 AML other m 2022-05-03T20:20:39.31
IV.SEI.HHE. ML:1.7 0.0001645 0.36 AML other m 2022-05-03T20:20:39.61
IV.LMD.HHN. ML:1.7 0.0000996 0.74 AML other m 2022-05-03T20:20:39.73
IV.FNVD.HHE. ML:1.5 0.0000658 0.42 AML other m 2022-05-03T20:20:39.54
IV.CRE.HHN. ML:1.4 0.00004905 0.32 AML other m 2022-05-03T20:20:40.03
GU.POPM.HHE. ML:1.3 0.0000433 0.52 AML other m 2022-05-03T20:20:40.88
IV.CAFI.HHN. ML:1.1 0.000021249999999999998 0.28 AML other m 2022-05-03T20:20:40.78
IV.CAFI.HHE. ML:1.2 0.0000296 0.64 AML other m 2022-05-03T20:20:40.88
GU.POPM.HHN. ML:1.4 0.0000547 1.14 AML other m 2022-05-03T20:20:41.70
GU.MAIM.HHE. ML:1.0 0.0000189 0.62 AML other m 2022-05-03T20:20:41.52
IV.FNVD.HHN. ML:1.6 0.0000926 1.42 AML other m 2022-05-03T20:20:41.07
GU.MAIM.HHN. ML:1.2 0.000022800000000000002 0.64 AML other m 2022-05-03T20:20:42.74
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