Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 24-05-2022 and time 01:05:18 (Italy) in region 5 km SW San Casciano in Val di Pesa (FI)

A magnitude ML 1.6 earthquake occured in region: 5 km SW San Casciano in Val di Pesa (FI), on

  • 23-05-2022 23:05:18 (UTC)
  • 24-05-2022 01:05:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.6150, 11.1620 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
San Casciano in Val di Pesa FI 5 17062 17062
Tavarnelle Val di Pesa FI 6 7800 24862
Montespertoli FI 8 13537 38399
Barberino Val d'Elsa FI 8 4386 42785
Impruneta FI 11 14615 57400
Certaldo FI 12 16121 73521
Greve in Chianti FI 13 13862 87383
Castelfiorentino FI 15 17504 104887
Scandicci FI 16 50609 155496
Poggibonsi SI 16 29196 184692
Montelupo Fiorentino FI 17 14098 198790
Lastra a Signa FI 18 20156 218946
Gambassi Terme FI 19 4870 223816
Firenze FI 19 382808 606624
San Gimignano SI 19 7820 614444
Castellina in Chianti SI 19 2859 617303
Signa FI 19 19179 636482
Bagno a Ripoli FI 20 25611 662093

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km S of Scandicci (50609 inhabitants)
19 Km SW of Firenze (382808 inhabitants)
30 Km S of Prato (191150 inhabitants)
36 Km NW of Siena (53903 inhabitants)
41 Km SE of Pistoia (90315 inhabitants)
59 Km E of Lucca (89046 inhabitants)
60 Km W of Arezzo (99543 inhabitants)
62 Km E of Pisa (89158 inhabitants)
69 Km E of Livorno (159219 inhabitants)
78 Km E of Viareggio (62467 inhabitants)
93 Km SW of Imola (69797 inhabitants)
94 Km SE of Massa (69479 inhabitants)
94 Km SW of Faenza (58541 inhabitants)
95 Km N of Grosseto (82087 inhabitants)
98 Km SW of Forlì (117913 inhabitants)
99 Km S of Bologna (386663 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 2022-05-23
23:05:18		 43.6152 11.1625 9 2023-01-31
19:03:17		 Bollettino Sismico Italiano INGV 106298261
Reviewed
Rev100 		ML 1.7 2022-05-23
23:05:18		 43.6148 11.1565 9 2022-05-23
23:16:02		 Sala Sismica INGV-Roma 105075021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-23 23:05:18 ± 0.04
Latitude 43.6152 ± 0.0018
Longitude 11.1625 ± 0.0037
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 106298261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 268
Semi-minor axis of confidence ellipse (meter) 219
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
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) 0.02968
Epicentral distance of station farthest from the epicenter (degree) 0.67089
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 105075021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-23 23:16:02

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 35
Type of magnitude ML
Reference to an origin 106298261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-06-20 16:31:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2022-05-23T23:05:40.60 0.6 undecidable manual S 116 72.0723 50 0.08 44
IV.BDI.HHZ. 2022-05-23T23:05:39.40 0.6 undecidable manual S 318 67.2771 50 0.15 44
IV.CRE.HHZ. 2022-05-23T23:05:38.40 0.6 undecidable manual S 89 63.3921 50 0.19 44
GU.MAIM.HHZ. 2022-05-23T23:05:37.80 0.6 undecidable manual S 302 63.0924 50 -0.34 42
IV.MAGO.CHE. 2022-05-23T23:05:36.30 0.6 undecidable manual S 227 55.5999 50 0.17 44
IV.SEI.HHZ. 2022-05-23T23:05:35.30 0.6 undecidable manual S 18 51.2154 50 0.34 43
IV.ASQU.HHZ. 2022-05-23T23:05:35.80 0.6 undecidable manual S 68 54.1014 50 0.05 46
IV.PII.HHZ. 2022-05-23T23:05:34.70 0.6 undecidable manual S 283 52.503 50 -0.61 40
IV.FROS.CHE. 2022-05-23T23:05:33.10 0.6 undecidable manual S 181 45.0216 50 -0.19 45
IV.MOCL.EHZ. 2022-05-23T23:05:32.40 0.6 undecidable manual S 2 43.2234 50 -0.44 43
IV.MPPT.EHZ. 2022-05-23T23:05:31.70 0.3 undecidable manual S 351 38.4282 50 0.16 69
IV.CAFI.HHZ. 2022-05-23T23:05:31.34 0.6 undecidable manual P 116 72.0723 50 0.17 43
IV.RIBO.EHZ.01 2022-05-23T23:05:31.32 1.0 undecidable manual P 187 74.4699 50 -0.23 21
IV.BOSL.HHE. 2022-05-23T23:05:31.40 0.6 undecidable manual S 26 38.9277 50 -0.28 45
GU.MAIM.HHZ. 2022-05-23T23:05:30.20 1.0 undecidable manual P 302 63.0924 50 0.41 21
IV.RUFI.EHZ. 2022-05-23T23:05:30.90 0.3 undecidable manual S 48 37.2294 50 -0.33 67
IV.BDI.HHZ. 2022-05-23T23:05:30.61 1.0 undecidable manual P 318 67.2771 50 0.17 22
IV.CRE.HHZ. 2022-05-23T23:05:30.09 0.6 undecidable manual P 89 63.3921 50 0.26 43
IV.ASQU.HHZ. 2022-05-23T23:05:28.19 0.3 undecidable manual P 68 54.1014 50 -0.23 66
IV.PII.HHZ. 2022-05-23T23:05:28.28 0.1 undecidable manual P 283 52.503 50 0.12 90
IV.MAGO.CHE. 2022-05-23T23:05:28.74 0.3 undecidable manual P 227 55.5999 50 0.11 68
IV.SEI.HHZ. 2022-05-23T23:05:28.38 0.1 undecidable manual P 18 51.2154 50 0.43 85
IV.FROS.CHE. 2022-05-23T23:05:27.29 0.3 undecidable manual P 181 45.0216 50 0.29 66
IV.CRMI.HHZ. 2022-05-23T23:05:27.50 0.6 undecidable manual S 324 24.8529 110 -0.08 48
IV.MOCL.EHZ. 2022-05-23T23:05:27.12 0.6 undecidable manual P 2 43.2234 50 0.38 43
IV.BOSL.HHE. 2022-05-23T23:05:25.86 0.1 undecidable manual P 26 38.9277 50 -0.21 91
IV.CSNT.HHZ. 2022-05-23T23:05:25.50 0.6 undecidable manual S 147 18.7701 116 -0.15 48
IV.MPPT.EHZ. 2022-05-23T23:05:25.95 0.3 undecidable manual P 351 38.4282 50 -0.04 71
IV.RUFI.EHZ. 2022-05-23T23:05:25.61 0.1 undecidable manual P 48 37.2294 50 -0.19 91
IV.CRMI.HHZ. 2022-05-23T23:05:23.53 0.1 undecidable manual P 324 24.8529 110 -0.17 94
ZH.T1648.EHZ. 2022-05-23T23:05:23.50 0.6 undecidable manual S 60 11.0778 129 0.11 49
ZH.T1614.EHE. 2022-05-23T23:05:23.60 0.6 undecidable manual S 26 12.0768 127 -0.05 49
ZH.T1647.EHE. 2022-05-23T23:05:23.60 0.6 undecidable manual S 94 11.9769 127 -0.03 49
IV.OSSC.HHZ. 2022-05-23T23:05:23.70 0.3 undecidable manual S 147 12.1767 127 0.03 74
IV.CSNT.HHZ. 2022-05-23T23:05:22.34 0.1 undecidable manual P 147 18.7701 116 -0.24 94
ZH.T1646.EHZ. 2022-05-23T23:05:22.30 0.6 undecidable manual S 318 6.4935 144 0.01 50
ZH.T1647.EHE. 2022-05-23T23:05:21.38 0.1 undecidable manual P 94 11.9769 127 -0.04 99
ZH.T1618.HNE. 2022-05-23T23:05:21.60 0.3 undecidable manual S 209 3.2967 160 -0.16 73
IV.OSSC.HHZ. 2022-05-23T23:05:21.48 0.1 undecidable manual P 147 12.1767 127 0.03 99
ZH.T1648.EHZ. 2022-05-23T23:05:21.36 0.1 undecidable manual P 60 11.0778 129 0.08 98
ZH.T1614.EHE. 2022-05-23T23:05:21.45 0.1 undecidable manual P 26 12.0768 127 0.02 99
ZH.T1618.HNE. 2022-05-23T23:05:20.30 0.1 undecidable manual P 209 3.2967 160 -0.04 100
ZH.T1646.EHZ. 2022-05-23T23:05:20.95 0.1 undecidable manual P 318 6.4935 144 0.31 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
ZH.T1646.HNN. ML:2.6 0.0070716195 0.1792 AML other m 2022-05-23T23:05:23.58
ZH.T1646.EHN. ML:2.5 0.0049299999999999995 0.16 AML other m 2022-05-23T23:05:23.67
IV.OSSC.HHN. ML:1.9 0.0008661177 0.2816 AML other m 2022-05-23T23:05:23.89
ZH.T1646.HNE. ML:2.4 0.0044404430000000005 0.1408 AML other m 2022-05-23T23:05:23.93
ZH.T1646.EHE. ML:2.4 0.004185 0.64 AML other m 2022-05-23T23:05:23.55
ZH.T1648.EHN. ML:2.2 0.0020365021 0.2048 AML other m 2022-05-23T23:05:23.87
ZH.T1648.EHE. ML:2.0 0.0012000000000000001 0.26 AML other m 2022-05-23T23:05:24.20
IV.OSSC.HHE. ML:1.9 0.0008880910499999999 0.1408 AML other m 2022-05-23T23:05:25.42
IV.CSNT.HHN. ML:1.7 0.0004158003 1.6288 AML other m 2022-05-23T23:05:26.95
IV.CSNT.HHE. ML:1.7 0.00036502475 0.2944 AML other m 2022-05-23T23:05:27.67
IV.CRMI.HHE. ML:1.0 0.000053663985 0.5248 AML other m 2022-05-23T23:05:27.57
IV.CRMI.HHN. ML:1.1 0.00007729897500000001 1.7184 AML other m 2022-05-23T23:05:27.96
IV.RUFI.EHN. ML:1.5 0.00011690000000000001 0.28 AML other m 2022-05-23T23:05:31.39
IV.RUFI.EHE. ML:1.6 0.0001547952 0.1792 AML other m 2022-05-23T23:05:31.67
IV.MPPT.EHE. ML:1.8 0.0002318488 0.32 AML other m 2022-05-23T23:05:32.14
IV.CRMI.HNE. ML:1.3 0.0001194435 0.6144 AML other m 2022-05-23T23:05:32.52
IV.MPPT.EHN. ML:1.7 0.0001985 0.24 AML other m 2022-05-23T23:05:32.78
IV.PII.HHN. ML:1.6 0.0001118195 0.2048 AML other m 2022-05-23T23:05:35.28
IV.BDI.HNN. ML:1.9 0.0001287468 1.2832 AML other m 2022-05-23T23:05:36.01
IV.ASQU.HHN. ML:1.5 0.00007465 0.48 AML other m 2022-05-23T23:05:36.31
IV.ASQU.HHE. ML:1.6 0.00010109999999999999 0.4 AML other m 2022-05-23T23:05:36.47
IV.PII.HHE. ML:1.8 0.000149 0.28 AML other m 2022-05-23T23:05:37.25
IV.CRE.HHN. ML:1.4 0.00004695 0.34 AML other m 2022-05-23T23:05:39.63
IV.SEI.HHN. ML:2.0 0.0002465 0.3 AML other m 2022-05-23T23:05:39.54
IV.SEI.HHE. ML:1.7 0.0001351244 0.4096 AML other m 2022-05-23T23:05:40.68
IV.BDI.HNE. ML:1.8 0.0001201755 0.7936 AML other m 2022-05-23T23:05:40.52
IV.CRE.HHE. ML:1.2 0.000031887925 1.6416 AML other m 2022-05-23T23:05:41.91
IV.CAFI.HHE. ML:1.1 0.000020499999999999997 0.2 AML other m 2022-05-23T23:05:41.22
IV.BDI.HHN. ML:1.4 0.00004975144 0.4096 AML other m 2022-05-23T23:05:42.32
IV.BDI.HHE. ML:1.6 0.0000681968 0.5632 AML other m 2022-05-23T23:05:42.79
IV.CAFI.HNN. ML:1.4 0.00004340426 0.7296 AML other m 2022-05-23T23:05:43.82
IV.CAFI.HHN. ML:1.1 0.00001835 0.88 AML other m 2022-05-23T23:05:44.47
IV.CAFI.HNE. ML:1.3 0.0000345846 0.8192 AML other m 2022-05-23T23:05:45.47
GU.MAIM.HHE. ML:1.0 0.000020445175000000004 1.3984 AML other m 2022-05-23T23:05:46.74
GU.MAIM.HHN. ML:1.0 0.000020435599999999998 1.5008 AML other m 2022-05-23T23:05:48.96
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