Earthquake with magnitude of ML 1.2 on date 18-05-2022 and time 19:36:40 (UTC) in region 4 km SE Impruneta (FI)

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

  • 18-05-2022 19:36:40 (UTC)
  • 18-05-2022 21:36:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6560, 11.2680 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

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 7 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
Figline e Incisa Valdarno FI 15 23505 535872
Barberino Val d'Elsa FI 15 4386 540258
Montespertoli FI 16 13537 553795
Rignano sull'Arno FI 17 8651 562446
Fiesole FI 17 13969 576415
Lastra a Signa FI 18 20156 596571
Pontassieve FI 19 20603 617174
Signa FI 20 19179 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)
29 Km SE of Prato (191150 inhabitants)
38 Km N of Siena (53903 inhabitants)
42 Km SE of Pistoia (90315 inhabitants)
54 Km W of Arezzo (99543 inhabitants)
65 Km E of Lucca (89046 inhabitants)
70 Km E of Pisa (89158 inhabitants)
78 Km E of Livorno (159219 inhabitants)
85 Km E of Viareggio (62467 inhabitants)
85 Km SW of Imola (69797 inhabitants)
86 Km SW of Faenza (58541 inhabitants)
88 Km SW of Forlì (117913 inhabitants)
94 Km S of Bologna (386663 inhabitants)
95 Km SW of Cesena (96758 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
Reviewed
Rev100
ML 1.2 2022-05-18
19:36:40
43.6565 11.268 8 2022-05-18
19:50:32
Sala Sismica INGV-Roma 104833151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-18 19:36:40 ± 0.07
Latitude 43.6565 ± 0.0027
Longitude 11.2680 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 104833151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 172
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 20
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35343
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 12
Type of magnitude ML
Reference to an origin 104833151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-18 19:50:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2022-05-18T19:37:05.54 3.0 undecidable manual S -0.1 0
ZH.SEI.HHZ. 2022-05-18T19:36:57.00 3.0 undecidable manual P 0
ZH.SEI.HHZ. 2022-05-18T19:36:57.99 3.0 undecidable manual S 0
IV.MOCL.EHN. 2022-05-18T19:36:53.86 0.3 undecidable manual S 350 39.2274 50 -0.12 69
IV.BOSL.HHE. 2022-05-18T19:36:51.62 0.3 undecidable manual S 16 31.6461 105 -0.14 70
IV.RUFI.EHZ. 2022-05-18T19:36:50.54 0.6 undecidable manual S 44 27.9498 106 0.02 48
IV.CRMI.HHZ. 2022-05-18T19:36:50.19 0.6 undecidable manual S 304 27.8499 107 -0.29 46
IV.MOCL.EHN. 2022-05-18T19:36:48.58 0.1 undecidable manual P 350 39.2274 50 0.33 89
IV.CSNT.HHZ. 2022-05-18T19:36:47.78 0.3 undecidable manual S 175 20.4684 112 -0.28 69
ZH.T1646.EHZ. 2022-05-18T19:36:46.20 0.3 undecidable manual S 271 12.7761 123 0.5 67
IV.BOSL.HHE. 2022-05-18T19:36:46.98 0.1 undecidable manual P 16 31.6461 105 0.02 96
IV.RUFI.EHZ. 2022-05-18T19:36:46.38 0.1 undecidable manual P 44 27.9498 106 0.13 94
IV.OSSC.HHZ. 2022-05-18T19:36:46.32 0.3 undecidable manual S 187 14.874 119 0.01 74
IV.CRMI.HHZ. 2022-05-18T19:36:45.99 0.1 undecidable manual P 304 27.8499 107 -0.23 92
ZH.T1647.HNE. 2022-05-18T19:36:44.28 0.3 undecidable manual S 147 6.4935 142 0.21 72
IV.CSNT.HHZ. 2022-05-18T19:36:44.56 0.1 undecidable manual P 175 20.4684 112 -0.26 93
ZH.T1648.EHZ. 2022-05-18T19:36:43.31 0.3 undecidable manual S 49 1.4985 169 -0.02 76
ZH.T1614.HNE. 2022-05-18T19:36:43.91 0.3 undecidable manual S 333 6.993 140 -0.27 71
ZH.T1646.EHZ. 2022-05-18T19:36:43.60 0.1 undecidable manual P 271 12.7761 123 0.14 97
IV.OSSC.HHZ. 2022-05-18T19:36:43.74 0.1 undecidable manual P 187 14.874 119 -0.08 97
ZH.T1648.EHZ. 2022-05-18T19:36:42.10 1.0 undecidable manual P 49 1.4985 169 0 25
ZH.T1614.HNE. 2022-05-18T19:36:42.60 0.1 undecidable manual P 333 6.993 140 0.01 100
ZH.T1647.HNE. 2022-05-18T19:36:42.73 0.1 undecidable manual P 147 6.4935 142 0.2 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.0 0.00011505000000000002 0.14 AML other m 2022-05-18T19:36:46.48
IV.OSSC.HHN. ML:0.8 0.000066643785 0.128 AML other m 2022-05-18T19:36:46.84
ZH.T1646.EHE. ML:1.2 0.00018619085000000002 0.1408 AML other m 2022-05-18T19:36:47.03
ZH.T1646.EHN. ML:1.1 0.00015473985 0.5504 AML other m 2022-05-18T19:36:46.27
ZH.T1648.EHE. ML:0.0 0.0016056184999999998 0.0896 AML other m 2022-05-18T19:36:43.40
ZH.T1648.EHN. ML:0.0 0.0011514163 0.0768 AML other m 2022-05-18T19:36:43.37
ZH.T1648.HNE. ML:0.0 0.0032491865000000004 0.5632 AML other m 2022-05-18T19:36:42.42
ZH.T1648.HNN. ML:0.0 0.0064367285 0.6528 AML other m 2022-05-18T19:36:45.34
ZH.T1646.HNE. ML:2.6 0.004139963500000001 0.5504 AML other m 2022-05-18T19:36:46.19
ZH.T1646.HNN. ML:2.5 0.00380463 1.0624 AML other m 2022-05-18T19:36:45.91
IV.CRMI.HNE. ML:1.3 0.000104704875 0.8576 AML other m 2022-05-18T19:36:52.27
IV.CRMI.HNN. ML:1.6 0.0002247755 0.96 AML other m 2022-05-18T19:36:57.20
IV.CRMI.HHE. ML:0.3 0.000008519766 0.256 AML other m 2022-05-18T19:36:50.64
IV.CRMI.HHN. ML:0.4 0.00001303303 0.2176 AML other m 2022-05-18T19:36:51.64
IV.SEI.HHE. ML:1.2 0.000051308025 0.5504 AML other m 2022-05-18T19:37:13.93
IV.SEI.HHN. ML:1.4 0.00007075229 0.3584 AML other m 2022-05-18T19:36:57.26
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download