Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 03-05-2022 and time 15:41:26 (UTC) in region 4 km S Impruneta (FI)

A magnitude ML 1.8 earthquake occured in region: 4 km S Impruneta (FI), on

  • 03-05-2022 15:41:26 (UTC)
  • 03-05-2022 17:41:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6490, 11.2470 at 9 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 9 13862 45539
Tavarnelle Val di Pesa FI 11 7800 53339
Bagno a Ripoli FI 13 25611 78950
Barberino Val d'Elsa FI 13 4386 83336
Scandicci FI 13 50609 133945
Firenze FI 14 382808 516753
Montespertoli FI 14 13537 530290
Figline e Incisa Valdarno FI 17 23505 553795
Lastra a Signa FI 18 20156 573951
Fiesole FI 18 13969 587920
Rignano sull'Arno FI 19 8651 596571
Signa FI 19 19179 615750
Certaldo FI 20 16121 631871
Castellina in Chianti SI 20 2859 634730

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Scandicci (50609 inhabitants)
14 Km S of Firenze (382808 inhabitants)
29 Km SE of Prato (191150 inhabitants)
37 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)
68 Km E of Pisa (89158 inhabitants)
76 Km E of Livorno (159219 inhabitants)
84 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)
99 Km E of Massa (69479 inhabitants)
99 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 1.8 2022-05-03
15:41:26		 43.6487 11.2472 9 2023-01-31
19:03:16		 Bollettino Sismico Italiano INGV 106100511
Reviewed
Rev100 		ML 1.8 2022-05-03
15:41:26		 43.6498 11.2508 8 2022-05-03
15:52:01		 Sala Sismica INGV-Roma 104130821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-03 15:41:26 ± 0.05
Latitude 43.6487 ± 0.0027
Longitude 11.2472 ± 0.0050
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 106100511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 433
Semi-minor axis of confidence ellipse (meter) 133
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 92
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.12501
Epicentral distance of station farthest from the epicenter (degree) 0.81299
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 38
Type of magnitude ML
Reference to an origin 106100511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-06-16 09:06:41

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 50
Type of magnitude ML
Reference to an origin 104130821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-03 15:52:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FNVD.HHZ. 2022-05-03T15:41:45.06 0.6 undecidable manual S 350 58.3971 50 0.12 46
IV.PII.HHZ. 2022-05-03T15:41:44.54 0.6 undecidable manual S 278 58.497 50 -0.42 43
IV.CRE.HHZ. 2022-05-03T15:41:44.63 0.6 undecidable manual S 93 56.6988 50 0.17 45
IV.FROS.CHZ. 2022-05-03T15:41:42.13 0.6 undecidable manual S 189 49.2174 50 -0.36 44
IV.ARCI.HHZ. 2022-05-03T15:41:42.28 0.3 undecidable manual P 168 90.243 50 0.3 62
IV.SEI.HHZ. 2022-05-03T15:41:41.81 0.6 undecidable manual S 11 45.8208 50 0.22 46
IV.CAFI.HNZ. 2022-05-03T15:41:39.21 0.6 undecidable manual P 121 67.8765 50 0.68 39
IV.MOCL.EHZ. 2022-05-03T15:41:39.66 0.6 undecidable manual S 352 39.8268 50 -0.32 45
IV.VISG.HHZ. 2022-05-03T15:41:38.06 0.3 undecidable manual P 14 61.7937 50 0.47 63
IV.MPPT.EHZ. 2022-05-03T15:41:38.90 0.6 undecidable manual S 340 36.5412 50 -0.18 47
GU.MAIM.HHZ. 2022-05-03T15:41:38.90 0.6 undecidable manual P 296 67.2771 50 0.46 42
IV.BOSL.HHZ. 2022-05-03T15:41:37.71 0.3 undecidable manual S 18 32.9448 50 -0.42 67
IV.PII.HHZ. 2022-05-03T15:41:37.29 0.3 undecidable manual P 278 58.497 50 0.2 67
IV.MAGO.CHN. 2022-05-03T15:41:37.94 0.3 undecidable manual P 229 63.0924 50 0.14 68
IV.FNVD.HHZ. 2022-05-03T15:41:37.33 0.3 undecidable manual P 350 58.3971 50 0.25 67
GU.POPM.HHZ. 2022-05-03T15:41:37.26 0.6 undecidable manual P 318 58.8966 50 0.11 46
IV.LMD.HHZ. 2022-05-03T15:41:37.41 0.1 undecidable manual P 38 60.0954 50 0.07 92
IV.CRMI.HHZ. 2022-05-03T15:41:36.33 0.3 undecidable manual S 307 26.9508 108 0.17 72
IV.RUFI.EHZ. 2022-05-03T15:41:36.66 0.3 undecidable manual S 45 29.748 106 -0.41 68
IV.CRE.HHZ. 2022-05-03T15:41:36.93 0.3 undecidable manual P 93 56.6988 50 0.13 69
IV.SEI.HHZ. 2022-05-03T15:41:35.39 0.1 undecidable manual P 11 45.8208 50 0.25 91
IV.FROS.CHZ. 2022-05-03T15:41:35.61 0.3 undecidable manual P 189 49.2174 50 -0.05 71
IT.FIE.HGZ. 2022-05-03T15:41:33.40 0.6 undecidable manual S 12 17.9709 116 0.14 49
IV.MPPT.EHZ. 2022-05-03T15:41:33.33 0.1 negative manual P 340 36.5412 50 -0.37 90
IV.CSNT.HHZ. 2022-05-03T15:41:33.46 0.3 undecidable manual S 170 19.7691 114 -0.36 70
IV.MOCL.EHZ. 2022-05-03T15:41:33.85 0.3 undecidable manual P 352 39.8268 50 -0.36 67
IV.OSSC.HHZ. 2022-05-03T15:41:32.05 0.3 undecidable manual S 180 13.875 122 0.05 75
IV.FIR.HHZ. 2022-05-03T15:41:32.03 0.6 undecidable manual S 3 13.9749 122 0 51
IV.RUFI.EHZ. 2022-05-03T15:41:32.39 0.1 positive manual P 45 29.748 106 -0.14 96
IV.BOSL.HHZ. 2022-05-03T15:41:32.90 0.1 positive manual P 18 32.9448 50 -0.25 93
IV.CRMI.HHZ. 2022-05-03T15:41:31.77 0.1 undecidable manual P 307 26.9508 108 -0.23 94
IV.CSNT.HHZ. 2022-05-03T15:41:30.50 0.1 negative manual P 170 19.7691 114 -0.16 97
IT.FIE.HGZ. 2022-05-03T15:41:30.60 0.3 undecidable manual P 12 17.9709 116 0.27 71
IV.OSSC.HHZ. 2022-05-03T15:41:29.67 0.1 positive manual P 180 13.875 122 0.06 100
IV.FIR.HHZ. 2022-05-03T15:41:29.85 0.1 undecidable manual P 3 13.9749 122 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:2.4 0.0026712654999999997 0.2176 AML other m 2022-05-03T15:41:32.27
IV.FIR.HHN. ML:2.2 0.0015585898 0.32 AML other m 2022-05-03T15:41:32.38
IV.FIR.HNN. ML:2.2 0.0015709544 0.3328 AML other m 2022-05-03T15:41:32.38
IV.FIR.HHE. ML:2.1 0.0014657434999999998 0.192 AML other m 2022-05-03T15:41:32.63
IV.FIR.HNE. ML:2.2 0.0015082705 0.1792 AML other m 2022-05-03T15:41:32.63
IV.OSSC.HHN. ML:2.0 0.0010237926 0.1536 AML other m 2022-05-03T15:41:32.57
IV.CSNT.HHN. ML:1.8 0.00049067905 0.192 AML other m 2022-05-03T15:41:34.64
IV.CSNT.HHE. ML:1.9 0.0006950000000000001 0.22 AML other m 2022-05-03T15:41:36.19
IV.RUFI.EHE. ML:1.7 0.00023649999999999998 0.98 AML other m 2022-05-03T15:41:36.87
IV.CRMI.HNN. ML:1.9 0.00041507055 1.5648 AML other m 2022-05-03T15:41:36.00
IV.CRMI.HHN. ML:1.9 0.0004145 0.44 AML other m 2022-05-03T15:41:37.22
IV.RUFI.EHN. ML:1.6 0.0002155 0.18 AML other m 2022-05-03T15:41:37.16
IV.CRMI.HNE. ML:1.5 0.00018968045 0.2432 AML other m 2022-05-03T15:41:37.84
IV.CRMI.HHE. ML:1.3 0.0001212445 0.2432 AML other m 2022-05-03T15:41:37.72
IV.BOSL.HHE. ML:1.6 0.00017818557000000003 0.128 AML other m 2022-05-03T15:41:37.92
IV.BOSL.HHN. ML:1.4 0.00011229815 0.2304 AML other m 2022-05-03T15:41:38.31
IV.MPPT.EHN. ML:1.7 0.000195 0.64 AML other m 2022-05-03T15:41:39.43
IV.MPPT.EHE. ML:1.9 0.000312 0.62 AML other m 2022-05-03T15:41:39.44
IV.MOCL.EHN. ML:2.2 0.0005780000000000001 0.16 AML other m 2022-05-03T15:41:41.23
IV.MOCL.EHE. ML:2.1 0.00048707734999999994 0.1536 AML other m 2022-05-03T15:41:41.31
IV.SEI.HHN. ML:2.3 0.0005935000000000001 0.26 AML other m 2022-05-03T15:41:43.19
IV.CRE.HHE. ML:1.7 0.00012163055000000001 0.3328 AML other m 2022-05-03T15:41:45.26
IV.CRE.HHN. ML:1.6 0.0001014 1.08 AML other m 2022-05-03T15:41:45.10
IV.PII.HHE. ML:2.0 0.000194 1.7 AML other m 2022-05-03T15:41:46.95
IV.LMD.HHN. ML:2.0 0.00018361665 0.2048 AML other m 2022-05-03T15:41:46.49
IV.SEI.HHE. ML:1.9 0.00023349999999999998 0.34 AML other m 2022-05-03T15:41:46.64
IV.LMD.HHE. ML:1.9 0.00017505385 0.2304 AML other m 2022-05-03T15:41:46.47
IV.VISG.HHE. ML:1.7 0.00009545 0.48 AML other m 2022-05-03T15:41:46.58
IV.FNVD.HHE. ML:1.7 0.00011715039999999999 0.3456 AML other m 2022-05-03T15:41:46.79
IV.VISG.HHN. ML:1.6 0.00007195 0.42 AML other m 2022-05-03T15:41:46.80
IV.PII.HHN. ML:2.1 0.0002441334 0.2816 AML other m 2022-05-03T15:41:46.71
GU.POPM.HHE. ML:1.6 0.0000783 0.22 AML other m 2022-05-03T15:41:47.41
GU.POPM.HHN. ML:1.8 0.000124 0.24 AML other m 2022-05-03T15:41:48.05
GU.MAIM.HHN. ML:1.3 0.000036764815 0.2944 AML other m 2022-05-03T15:41:48.84
IV.FNVD.HHN. ML:1.9 0.0001597026 1.5392 AML other m 2022-05-03T15:41:48.12
GU.MAIM.HHE. ML:1.2 0.00002335 0.82 AML other m 2022-05-03T15:41:49.99
IV.ARCI.HHN. ML:1.5 0.000039349999999999994 0.88 AML other m 2022-05-03T15:41:55.61
IV.ARCI.HHE. ML:1.4 0.000029726145000000003 0.3712 AML other m 2022-05-03T15:41:57.41
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