Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 08-05-2022 and time 00:07:09 (Italy) in region 4 km S Impruneta (FI)

A magnitude ML 1.2 earthquake occured in region: 4 km S Impruneta (FI), on

  • 07-05-2022 22:07:09 (UTC)
  • 08-05-2022 00:07:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6480, 11.2430 at 10 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
Barberino Val d'Elsa FI 13 4386 57725
Bagno a Ripoli FI 13 25611 83336
Scandicci FI 13 50609 133945
Montespertoli FI 13 13537 147482
Firenze FI 14 382808 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)
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)
88 Km SW of Faenza (58541 inhabitants)
91 Km SW of Forlì (117913 inhabitants)
95 Km S of Bologna (386663 inhabitants)
97 Km SW of Cesena (96758 inhabitants)
98 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 1.2 2022-05-07
22:07:09		 43.6478 11.2427 10 2023-01-31
19:03:15		 Bollettino Sismico Italiano INGV 105706981
Reviewed
Rev100 		ML 1.2 2022-05-07
22:07:09		 43.651 11.2575 9 2022-05-07
22:16:35		 Sala Sismica INGV-Roma 104323351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-07 22:07:09 ± 0.05
Latitude 43.6478 ± 0.0027
Longitude 11.2427 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 105706981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 335
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
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 40
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62413
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 105706981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-06-07 14:44:19

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 104323351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-07 22:16:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ECTS.HHZ. 2022-05-07T22:08:52.52 3.0 positive manual Pg 14.53 0
IV.MCRV.HHZ. 2022-05-07T22:08:51.71 3.0 undecidable manual Sn 1.28 0
IV.ACATE.EHZ. 2022-05-07T22:08:49.62 3.0 undecidable manual Pn 2.91 0
IV.VITU.HHZ. 2022-05-07T22:08:48.56 3.0 undecidable manual Sg 12.03 0
IV.PIGN.HHZ. 2022-05-07T22:08:30.38 3.0 undecidable manual Sn -0.79 0
IV.MIDA.HHZ. 2022-05-07T22:08:25.87 3.0 undecidable manual Sn 2.36 0
IV.ERC.EHZ. 2022-05-07T22:08:24.91 3.0 undecidable manual Pn -3.77 0
IV.MSSA.HHZ. 2022-05-07T22:07:51.61 3.0 undecidable manual Sn -0.2 0
RD.PGF.BHZ. 2022-05-07T22:07:50.76 3.0 undecidable manual Pg 10.29 0
GU.RORO.HHZ. 2022-05-07T22:07:47.09 3.0 undecidable manual Pn 2.55 0
IV.ATFO.HHZ. 2022-05-07T22:07:34.00 3.0 undecidable manual S 1.43 0
IV.VOBA.EHZ. 2022-05-07T22:07:34.14 3.0 negative manual Pn -2.46 0
IV.CAFI.HNN. 2022-05-07T22:07:30.54 0.6 undecidable manual S 121 68.1762 50 0.38 42
IV.CRE.HHE. 2022-05-07T22:07:27.36 0.3 undecidable manual S 93 56.9985 50 0.17 68
IV.PII.HHZ. 2022-05-07T22:07:27.18 0.3 undecidable manual S 278 58.1973 50 -0.31 66
IV.SEI.HHZ. 2022-05-07T22:07:24.54 0.6 undecidable manual S 12 46.0206 50 0.28 45
IV.MOCL.EHZ. 2022-05-07T22:07:22.64 1.0 undecidable manual S 353 39.9267 50 0.02 24
IV.BDI.HHZ. 2022-05-07T22:07:21.67 0.1 undecidable manual P 312 69.2751 50 0.19 88
IV.CAFI.HNN. 2022-05-07T22:07:21.54 0.1 undecidable manual P 121 68.1762 50 0.23 88
IV.MPPT.EHN. 2022-05-07T22:07:21.41 0.6 undecidable manual S 340 36.4413 50 -0.29 46
IV.PII.HHZ. 2022-05-07T22:07:20.01 0.1 undecidable manual P 278 58.1973 50 0.23 89
IV.BOSL.HHZ. 2022-05-07T22:07:20.59 0.3 undecidable manual S 19 33.1446 50 -0.22 70
IV.CRMI.HHZ. 2022-05-07T22:07:19.23 0.3 undecidable manual S 308 26.751 110 0.13 72
IV.RUFI.EHZ. 2022-05-07T22:07:19.59 0.3 undecidable manual S 45 30.0477 50 -0.39 68
IV.CRE.HHE. 2022-05-07T22:07:19.53 0.3 undecidable manual P 93 56.9985 50 -0.07 69
IV.ATFO.HHZ. 2022-05-07T22:07:18.81 3.0 positive manual P -1.42 0
IV.MOCL.EHZ. 2022-05-07T22:07:17.12 0.1 undecidable manual P 353 39.9267 50 0.16 94
IV.SEI.HHZ. 2022-05-07T22:07:17.92 0.1 undecidable manual P 12 46.0206 50 0.02 95
IV.MPPT.EHN. 2022-05-07T22:07:16.28 0.1 undecidable manual P 340 36.4413 50 -0.15 94
IV.CSNT.HHZ. 2022-05-07T22:07:16.41 0.3 undecidable manual S 169 19.7691 116 -0.47 68
IT.FIE.HGZ. 2022-05-07T22:07:16.46 0.6 undecidable manual S 13 18.1707 118 0.08 49
IV.RUFI.EHZ. 2022-05-07T22:07:15.42 0.1 undecidable manual P 45 30.0477 50 -0.02 98
IV.BOSL.HHZ. 2022-05-07T22:07:15.83 0.1 undecidable manual P 19 33.1446 50 -0.09 96
IV.FIR.HNZ. 2022-05-07T22:07:15.07 0.6 undecidable manual S 4 14.0748 125 -0.1 50
IV.OSSC.HHZ. 2022-05-07T22:07:15.20 0.3 undecidable manual S 179 13.7751 125 0.11 74
IV.CRMI.HHZ. 2022-05-07T22:07:14.92 0.6 undecidable manual P 308 26.751 110 0 49
IT.FIE.HGZ. 2022-05-07T22:07:13.38 0.1 undecidable manual P 13 18.1707 118 0.03 100
IV.CSNT.HHZ. 2022-05-07T22:07:13.48 0.1 undecidable manual P 169 19.7691 116 -0.17 97
IV.OSSC.HHZ. 2022-05-07T22:07:12.71 0.1 positive manual P 179 13.7751 125 0.1 99
IV.FIR.HNZ. 2022-05-07T22:07:12.80 0.6 undecidable manual P 4 14.0748 125 0.14 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.6 0.0004515 1.02 AML other m 2022-05-07T22:07:15.39
IV.OSSC.HHN. ML:1.3 0.00020800000000000001 0.48 AML other m 2022-05-07T22:07:16.31
IV.CSNT.HHE. ML:1.4 0.00018099999999999998 1.58 AML other m 2022-05-07T22:07:19.94
IV.CRMI.HHN. ML:0.9 0.000044200000000000004 0.48 AML other m 2022-05-07T22:07:20.00
IV.CSNT.HHN. ML:1.2 0.000118 0.52 AML other m 2022-05-07T22:07:20.05
IV.BOSL.HHE. ML:1.0 0.0000425 0.16 AML other m 2022-05-07T22:07:20.91
IV.BOSL.HHN. ML:0.8 0.0000323 1.6 AML other m 2022-05-07T22:07:21.12
IV.CRMI.HHE. ML:0.7 0.0000227 0.56 AML other m 2022-05-07T22:07:22.24
IV.SEI.HHN. ML:1.6 0.000129 1.6 AML other m 2022-05-07T22:07:27.92
IV.SEI.HHE. ML:1.3 0.000060899999999999996 0.4 AML other m 2022-05-07T22:07:28.77
IV.PII.HHE. ML:1.3 0.0000443 0.3 AML other m 2022-05-07T22:07:31.58
IV.PII.HHN. ML:1.2 0.0000349 1.54 AML other m 2022-05-07T22:07:35.92
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