Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 24-05-2021 and time 07:47:56 (Italy) in region 5 km W Greve in Chianti (FI)

A magnitude ML 2.0 earthquake occured in region: 5 km W Greve in Chianti (FI), on

  • 24-05-2021 05:47:56 (UTC)
  • 24-05-2021 07:47:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5890, 11.2530 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
Greve in Chianti FI 5 13862 13862
Tavarnelle Val di Pesa FI 7 7800 21662
Barberino Val d'Elsa FI 8 4386 26048
San Casciano in Val di Pesa FI 9 17062 43110
Impruneta FI 11 14615 57725
Castellina in Chianti SI 13 2859 60584
Radda in Chianti SI 15 1613 62197
Montespertoli FI 16 13537 75734
Poggibonsi SI 16 29196 104930
Certaldo FI 18 16121 121051
Figline e Incisa Valdarno FI 18 23505 144556
Bagno a Ripoli FI 19 25611 170167
Gaiole in Chianti SI 20 2758 172925
Scandicci FI 20 50609 223534

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Scandicci (50609 inhabitants)
20 Km S of Firenze (382808 inhabitants)
31 Km N of Siena (53903 inhabitants)
35 Km SE of Prato (191150 inhabitants)
47 Km SE of Pistoia (90315 inhabitants)
53 Km W of Arezzo (99543 inhabitants)
67 Km E of Lucca (89046 inhabitants)
70 Km E of Pisa (89158 inhabitants)
76 Km E of Livorno (159219 inhabitants)
86 Km E of Viareggio (62467 inhabitants)
93 Km SW of Faenza (58541 inhabitants)
93 Km SW of Imola (69797 inhabitants)
93 Km N of Grosseto (82087 inhabitants)
95 Km SW of Forlì (117913 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 2.0 2021-05-24
05:47:56		 43.589 11.2533 9 2021-12-29
11:12:10		 Bollettino Sismico Italiano INGV 92702231
Reviewed
Rev100 		ML 2.1 2021-05-24
05:47:56		 43.5892 11.258 8 2021-05-24
05:55:48		 Sala Sismica INGV-Roma 90441701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-24 05:47:56 ± 0.07
Latitude 43.5890 ± 0.0027
Longitude 11.2533 ± 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 92702231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 305
Semi-minor axis of confidence ellipse (meter) 233
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 91
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
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) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.11871
Epicentral distance of station farthest from the epicenter (degree) 1.10976
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 47
Type of magnitude ML
Reference to an origin 92702231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-07-13 08:28:23

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 90441701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-24 05:55:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.EQUI.HHZ. 2021-05-24T05:48:28.05 0.6 undecidable manual S 306 108.8133 50 -0.14 42
IV.VISG.HHZ. 2021-05-24T05:48:18.01 0.6 undecidable manual S 12 68.0763 50 0.69 39
IV.PLMA.HHZ. 2021-05-24T05:48:17.38 0.3 undecidable manual P 295 123.1878 50 0.53 55
IV.LMD.HHZ. 2021-05-24T05:48:16.85 0.6 undecidable manual S 34 65.2902 50 0.29 44
IV.CAFI.HHZ. 2021-05-24T05:48:15.86 0.3 undecidable manual S 116 64.2912 50 -0.43 64
IV.TRIF.CHZ. 2021-05-24T05:48:15.10 0.3 undecidable manual S 208 59.6958 50 0.01 70
IV.MAGO.CHE. 2021-05-24T05:48:15.05 0.3 undecidable manual S 234 59.3961 50 0.05 70
IV.SFI.EHZ. 2021-05-24T05:48:14.95 0.3 undecidable manual S 53 59.0964 50 0.04 70
IV.CRE.HHZ. 2021-05-24T05:48:14.09 0.6 undecidable manual S 86 56.1993 50 -0.05 47
GU.EQUI.HHZ. 2021-05-24T05:48:14.72 1.0 undecidable manual P 306 108.8133 50 0.08 21
IV.ATVO.HHZ. 2021-05-24T05:48:13.18 0.1 undecidable manual P 103 95.6376 50 0.57 77
IV.PIEI.HHZ. 2021-05-24T05:48:13.90 0.3 undecidable manual P 93 103.2189 50 0.12 63
IV.SEI.HHZ. 2021-05-24T05:48:13.34 0.3 undecidable manual S 9 52.3032 50 0.24 68
IV.ATPI.EHZ. 2021-05-24T05:48:12.71 0.3 undecidable manual P 99 93.6396 50 0.4 61
IV.ASQU.HHZ. 2021-05-24T05:48:11.96 0.3 undecidable manual S 62 48.8178 50 -0.2 69
IV.ATMI.HHZ. 2021-05-24T05:48:11.58 0.6 undecidable manual P 109 86.4468 50 0.38 41
IV.ARCI.HHZ. 2021-05-24T05:48:11.00 0.3 undecidable manual P 168 83.7495 50 0.23 64
IV.MPPT.EHZ. 2021-05-24T05:48:10.60 0.3 undecidable manual S 342 42.9237 50 0 73
IV.PARC.HHZ. 2021-05-24T05:48:10.51 0.6 undecidable manual P 85 79.365 50 0.4 42
IV.FROS.CHZ. 2021-05-24T05:48:10.47 0.3 undecidable manual S 191 42.8238 50 -0.1 71
IV.SSP9.EHZ. 2021-05-24T05:48:09.45 0.3 undecidable manual P 91 70.5738 50 0.7 57
IV.VISG.HHZ. 2021-05-24T05:48:08.55 0.1 undecidable manual P 12 68.0763 50 0.18 89
IV.RUFI.EHZ. 2021-05-24T05:48:07.65 0.3 undecidable manual S 37 34.4433 50 -0.68 62
IV.MAGO.CHE. 2021-05-24T05:48:07.28 0.3 undecidable manual P 234 59.3961 50 0.25 67
IV.CRMI.HHZ. 2021-05-24T05:48:07.44 0.6 undecidable manual S 316 31.746 105 -0.1 48
IV.CAFI.HHZ. 2021-05-24T05:48:07.90 0.1 undecidable manual P 116 64.2912 50 0.13 91
IV.LMD.HHZ. 2021-05-24T05:48:07.96 0.3 undecidable manual P 34 65.2902 50 0.04 69
IV.PII.HHZ. 2021-05-24T05:48:06.73 0.1 positive manual P 284 60.2952 50 -0.43 86
IV.SFI.EHZ. 2021-05-24T05:48:06.63 0.3 undecidable manual P 53 59.0964 50 -0.35 66
IV.CRE.HHZ. 2021-05-24T05:48:06.45 0.3 undecidable manual P 86 56.1993 50 -0.08 70
IV.TRIF.CHZ. 2021-05-24T05:48:06.84 0.1 undecidable manual P 208 59.6958 50 -0.24 89
IT.FIE.HGZ. 2021-05-24T05:48:05.21 0.6 undecidable manual S 8 24.4533 109 0.09 49
IV.SEI.HHZ. 2021-05-24T05:48:05.82 0.3 undecidable manual P 9 52.3032 50 -0.11 70
IV.MPPT.EHZ. 2021-05-24T05:48:04.26 0.1 negative manual P 342 42.9237 50 -0.23 92
IV.FROS.CHZ. 2021-05-24T05:48:04.50 0.1 undecidable manual P 191 42.8238 50 0.03 96
IV.ASQU.HHZ. 2021-05-24T05:48:04.98 0.1 undecidable manual P 62 48.8178 50 -0.41 88
IV.FIR.HHE. 2021-05-24T05:48:04.12 0.3 undecidable manual S 0 20.5683 113 0.25 72
IV.RUFI.EHZ. 2021-05-24T05:48:02.70 0.1 undecidable manual P 37 34.4433 50 -0.48 89
IV.CRMI.HHZ. 2021-05-24T05:48:02.86 0.1 undecidable manual P 316 31.746 105 0.14 96
IT.FIE.HGZ. 2021-05-24T05:48:01.17 0.1 undecidable manual P 8 24.4533 109 -0.15 97
IV.CSNT.HHZ. 2021-05-24T05:48:01.42 0.3 undecidable manual S 167 13.1757 123 -0.17 74
IV.FIR.HHE. 2021-05-24T05:48:00.51 0.3 undecidable manual P 0 20.5683 113 -0.09 74
IV.CSNT.HHZ. 2021-05-24T05:47:59.19 0.1 undecidable manual P 167 13.1757 123 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHN. ML:2.0 0.0004215 0.26 AML other m 2021-05-24T05:48:07.59
IV.CRMI.HNN. ML:2.0 0.000407 0.48 AML other m 2021-05-24T05:48:07.60
IV.RUFI.EHE. ML:2.4 0.0010390000000000002 0.18 AML other m 2021-05-24T05:48:08.08
IV.RUFI.EHN. ML:2.4 0.001131 0.28 AML other m 2021-05-24T05:48:08.29
IV.CRMI.HHE. ML:1.9 0.00034899999999999997 0.36 AML other m 2021-05-24T05:48:08.28
IV.CRMI.HNE. ML:2.0 0.000497 0.38 AML other m 2021-05-24T05:48:08.29
IV.FROS.CHE. ML:2.6 0.0013599999999999999 0.26 AML other m 2021-05-24T05:48:10.65
IV.FROS.CHN. ML:2.5 0.0011149999999999999 0.26 AML other m 2021-05-24T05:48:11.40
IV.MPPT.EHE. ML:2.0 0.00033222030000000004 0.3776 AML other m 2021-05-24T05:48:10.83
IV.MPPT.EHN. ML:1.9 0.0002777188 0.2208 AML other m 2021-05-24T05:48:11.46
IV.ASQU.HHE. ML:2.2 0.000447 0.4 AML other m 2021-05-24T05:48:12.25
IV.ASQU.HHN. ML:2.2 0.00042500000000000003 0.22 AML other m 2021-05-24T05:48:12.87
IV.SFI.EHE. ML:2.3 0.0004465 1.64 AML other m 2021-05-24T05:48:15.98
IV.SFI.HNE. ML:2.4 0.0004885 1.64 AML other m 2021-05-24T05:48:15.98
IV.SFI.HNN. ML:2.1 0.000272714 0.3776 AML other m 2021-05-24T05:48:15.26
IV.SFI.EHN. ML:2.1 0.00025450835 0.3584 AML other m 2021-05-24T05:48:15.26
IV.TRIF.CHN. ML:2.3 0.00038669745 0.208 AML other m 2021-05-24T05:48:16.39
IV.TRIF.CHE. ML:2.2 0.0003125 1.84 AML other m 2021-05-24T05:48:15.95
IV.CAFI.HHN. ML:1.6 0.00008605 1.8 AML other m 2021-05-24T05:48:16.93
IV.PII.HHE. ML:2.1 0.00024 0.38 AML other m 2021-05-24T05:48:17.36
IV.LMD.HHE. ML:2.2 0.00028307515 0.0992 AML other m 2021-05-24T05:48:17.29
IV.LMD.HHN. ML:2.2 0.00032973895 0.1792 AML other m 2021-05-24T05:48:17.62
IV.VISG.HHE. ML:1.9 0.00012720395000000002 0.4416 AML other m 2021-05-24T05:48:20.31
IV.PII.HHN. ML:2.1 0.00028507585 0.4992 AML other m 2021-05-24T05:48:17.15
IV.VISG.HHN. ML:1.9 0.00012319230000000002 0.1408 AML other m 2021-05-24T05:48:19.03
IV.CAFI.HHE. ML:1.7 0.00009235 0.46 AML other m 2021-05-24T05:48:20.02
IV.PARC.HHN. ML:1.8 0.00008335 0.3 AML other m 2021-05-24T05:48:23.40
IV.PARC.HHE. ML:1.7 0.00007105 0.66 AML other m 2021-05-24T05:48:24.88
IV.ARCI.HHN. ML:1.6 0.00005745 0.28 AML other m 2021-05-24T05:48:24.73
IV.ARCI.HHE. ML:1.8 0.00007415 0.18 AML other m 2021-05-24T05:48:24.74
IV.ATPI.EHE. ML:1.8 0.0000705 0.44 AML other m 2021-05-24T05:48:27.26
IV.ATVO.HHE. ML:1.8 0.00007680337500000001 0.5408 AML other m 2021-05-24T05:48:27.62
IV.ATVO.HHN. ML:1.7 0.000053214795000000004 0.3392 AML other m 2021-05-24T05:48:28.20
IV.ATMI.HHN. ML:2.3 0.0002525174 0.48 AML other m 2021-05-24T05:48:28.01
IV.ATMI.HHE. ML:2.2 0.00017595099999999998 0.3584 AML other m 2021-05-24T05:48:29.93
IV.ATPI.EHN. ML:1.7 0.0000607 1.18 AML other m 2021-05-24T05:48:32.78
IV.CAFI.HNN. ML:1.9 0.00015880135 0.8288 AML other m 2021-05-24T05:48:20.73
IV.CAFI.HNE. ML:2.0 0.00019482475 1.088 AML other m 2021-05-24T05:48:17.64
IV.SSP9.EHN. ML:1.9 0.00013852002 0.5216 AML other m 2021-05-24T05:48:23.29
IV.SSP9.EHE. ML:1.7 0.00007816406000000001 0.32 AML other m 2021-05-24T05:48:21.48
IV.ARCI.HNN. ML:2.0 0.0001191576 0.3008 AML other m 2021-05-24T05:48:23.45
IV.ARCI.HNE. ML:1.8 0.00007797267499999999 0.1696 AML other m 2021-05-24T05:48:24.74
IV.ATPI.HNN. ML:2.1 0.00013307071500000001 0.8608 AML other m 2021-05-24T05:48:28.78
IV.PIEI.HHN. ML:1.5 0.00002876393 0.72 AML other m 2021-05-24T05:48:33.47
IV.PIEI.HHE. ML:1.6 0.000040401375 0.2624 AML other m 2021-05-24T05:48:32.09
GU.EQUI.HHE. ML:1.6 0.000036890809999999997 0.3392 AML other m 2021-05-24T05:48:32.48
GU.EQUI.HHN. ML:1.5 0.00002965143 0.5792 AML other m 2021-05-24T05:48:34.32
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
Waveforms Seismic signals in miniseed + resp format Download